Reddid Technical Architecture Specification - reddcoin-project/reddcoin GitHub Wiki

ReddID Technical Architecture Specification

Version: 1.0 Date: April 2025
Status: Draft

Table of Contents

  1. System Overview
  2. System Architecture
  3. Core Components
  4. Database Schema
  5. Blockchain Integration
  6. P2P Protocol Extensions
  7. API Interfaces
  8. Security Model
  9. External Dependencies
  10. Performance Considerations
  11. Deployment Requirements
  12. Implementation Guidelines

1. System Overview

1.1 Purpose

The ReddID system provides a comprehensive identity management solution for the Reddcoin blockchain, enabling namespaces, user identifiers, and identity profiles through a hierarchical, market-driven approach to allocation.

1.2 System Scope

The ReddID system encompasses three integrated tiers:

  1. Namespaces - Top-level domains (.redd, .crypto, etc.) allocated through auctions
  2. User IDs - Identifiers within namespaces (alice.redd, bob.crypto, etc.) allocated through namespace-specific auctions
  3. ReddID Profiles - Cross-namespace identities with social and reputation features

1.3 Key Features

  • Market-based allocation through auctions with anti-sniping protections
  • Hierarchical governance with namespace owners defining rules for user IDs
  • Cross-namespace identity resolution with social graph and reputation
  • Deflationary economic model with multi-stakeholder revenue distribution
  • Efficient P2P synchronization of identity data
  • Anti-squatting mechanisms through economic disincentives

1.4 High-Level Architecture

The ReddID system extends the Reddcoin Core codebase with new components, database schemas, blockchain operations, P2P messages, and RPC commands, all coordinated through a central ReddIDManager.

graph TD
    subgraph ReddID["ReddID System Architecture"]
        ReddIDManager["ReddIDManager\n(Central Coordination Component)"]
        
        NamespaceManager["Namespace Manager"]
        AuctionManager["Auction Manager"]
        ProfileManager["Profile Manager"]
        ReddIDP2PManager["ReddIDP2P Manager"]
        
        ReddIDDB["ReddIDDB\n(Database Layer)"]
        
        ReddIDManager --> NamespaceManager
        ReddIDManager --> AuctionManager
        ReddIDManager --> ProfileManager
        ReddIDManager --> ReddIDP2PManager
        
        NamespaceManager --> ReddIDDB
        AuctionManager --> ReddIDDB
        ProfileManager --> ReddIDDB
        ReddIDP2PManager --> ReddIDDB
    end
    
    BlockchainIntegration["Blockchain Integration"]
    RPCInterface["RPC Interface"]
    P2PNetwork["P2P Network"]
    
    ReddIDDB --> BlockchainIntegration
    ReddIDDB --> RPCInterface
    ReddIDDB --> P2PNetwork
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2. System Architecture

2.1 Architectural Principles

  1. Modularity - Clear separation of concerns between components
  2. Hierarchical Structure - Top-down design with well-defined dependencies
  3. Market-Driven Allocation - Auction mechanisms for efficient resource allocation
  4. Blockchain Integration - Use of Reddcoin blockchain for immutable state verification
  5. P2P Synchronization - Efficient distribution of identity data across the network
  6. Extensibility - Design for future feature additions and improvements

2.2 System Components Overview

Component Primary Responsibility
ReddIDManager Central orchestration of all identity components
NamespaceManager Namespace registration, configuration, and governance
AuctionManager Auction creation, bidding, and settlement
ProfileManager Identity profiles, social connections, and reputation
ReddIDDB Persistent storage and retrieval of all identity data
ReddIDP2PManager P2P protocol extensions for identity data synchronization

2.3 Primary Data Flow

    graph TD
        ClientRequest["Client Request"]
        RPCInterface["RPC Interface"]
        ReddIDManager["ReddIDManager"]
        ComponentRouting["Component Routing"]
        
        BlockchainTransaction["Blockchain Transaction"]
        ReddIDDBOperations["ReddIDDB Operations"]
        P2PMessages["P2P Messages"]
        
        ComponentProcessing["Component-Specific Processing"]
        NetworkPropagation["Network Propagation"]
        ClientResponse["Client Response"]
        
        ClientRequest --> RPCInterface
        RPCInterface --> ReddIDManager
        ReddIDManager --> ComponentRouting
        
        ComponentRouting --> BlockchainTransaction
        ComponentRouting --> ReddIDDBOperations
        ComponentRouting --> P2PMessages
        
        BlockchainTransaction --> NetworkPropagation
        ReddIDDBOperations --> ComponentProcessing
        P2PMessages --> ComponentProcessing
        
        ReddIDManager --> ComponentProcessing
        ComponentProcessing --> ClientResponse
        ComponentProcessing --> NetworkPropagation
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3. Core Components

3.1 ReddIDManager

3.1.1 Purpose

The ReddIDManager serves as the central coordination component for the entire ReddID system, orchestrating interactions between all subcomponents and providing the primary interface for external systems.

3.1.2 Responsibilities

  • Initialize and coordinate all ReddID components
  • Route operations to appropriate sub-managers
  • Maintain system-wide configuration
  • Provide validation interface for blockchain integration
  • Coordinate transaction creation for on-chain operations
  • Expose RPC interfaces for wallet and application integration

3.1.3 Key Methods

class ReddIDManager {
public:
    // Initialization and shutdown
    bool Initialize();
    void Shutdown();
    
    // Component access
    NamespaceManager* GetNamespaceManager();
    AuctionManager* GetAuctionManager();
    ProfileManager* GetProfileManager();
    ReddIDDB* GetReddIDDB();
    ReddIDP2PManager* GetP2PManager();
    
    // High-level operations
    // Namespace operations
    bool CreateNamespaceAuction(const std::string& namespaceId, const CKeyID& creator,
                              CAmount reservePrice, int durationDays, 
                              AuctionType type, uint256& auctionId);
    bool FinalizeNamespaceAuction(const uint256& auctionId);
    bool CancelNamespaceAuction(const uint256& auctionId, const CKeyID& creator);
    
    // User ID operations
    bool CreateUserIDAuction(const std::string& name, const std::string& namespaceId,
                           const CKeyID& creator, CAmount reservePrice,
                           int durationDays, AuctionType type, uint256& auctionId);
    bool FinalizeUserIDAuction(const uint256& auctionId);
    bool CancelUserIDAuction(const uint256& auctionId, const CKeyID& creator);
    
    // ReddID operations
    bool RegisterReddID(const std::string& reddId, const CKeyID& owner,
                      const ReddIDProfile& profile);
    bool UpdateProfile(const std::string& reddId, const ReddIDProfile& profile,
                     const CKeyID& owner);
    bool CreateConnection(const ReddIDConnection& connection, const CKeyID& owner);
    bool UpdateConnection(const ReddIDConnection& connection, const CKeyID& owner);
    bool RemoveConnection(const std::string& fromReddId, const std::string& toReddId,
                        const CKeyID& owner);
    
    // Transaction fee calculation
    CAmount CalculateRenewalFee(const std::string& name, const std::string& namespaceId);
    CAmount CalculateRenewalFee(const std::string& namespaceId);
    
    // Blockchain verification
    bool ProcessIdTx(const CTransaction& tx, int height);
    
private:
    // Component instances
    std::unique_ptr<NamespaceManager> m_namespaceManager;
    std::unique_ptr<AuctionManager> m_auctionManager;
    std::unique_ptr<ProfileManager> m_profileManager;
    std::unique_ptr<ReddIDDB> m_reddidDB;
    std::unique_ptr<ReddIDP2PManager> m_p2pManager;
    
    // Helper methods
    bool CreateOpReturnTransaction(const std::vector<unsigned char>& data, 
                                 CWallet* pwallet, CMutableTransaction& mtx);
};

3.1.4 Configuration Parameters

Parameter Type Description Default
enableReddID bool Whether the ReddID system is enabled true
maxNamespaceLength int Maximum length of namespace identifiers 15
maxUserIdLength int Maximum length of user ID identifiers 64
maxReddIdLength int Maximum length of ReddID identifiers 32
minAuctionDuration int Minimum allowed auction duration (days) 3
maxAuctionDuration int Maximum allowed auction duration (days) 30
developerFundAddress string Address for developer fund revenue ""
nodeRewardAddress string Address for node operator rewards ""

3.2 NamespaceManager

3.2.1 Purpose

The NamespaceManager handles the registration, configuration, and governance of namespaces, which serve as top-level domains within the ReddID system.

3.2.2 Responsibilities

  • Create and manage namespace auctions
  • Validate namespace identifiers and configurations
  • Enforce namespace governance rules
  • Process namespace transfers and renewals
  • Maintain namespace pricing tiers
  • Calculate namespace fees based on configuration

3.2.3 Key Methods

class NamespaceManager {
public:
    // Initialization
    NamespaceManager(ReddIDManager* reddIDManager);
    bool Initialize();
    
    // Namespace validation
    bool ValidateNamespaceID(const std::string& namespaceId);
    bool IsNamespaceAvailable(const std::string& namespaceId);
    
    // Namespace auctions
    bool CreateNamespaceAuction(const std::string& namespaceId, const CKeyID& creator,
                              CAmount reservePrice, int durationDays,
                              AuctionType type, uint256& auctionId);
    bool BidOnNamespaceAuction(const uint256& auctionId, const CKeyID& bidder,
                             CAmount bidAmount, uint256& bidId);
    bool FinalizeNamespaceAuction(const uint256& auctionId);
    bool CancelNamespaceAuction(const uint256& auctionId, const CKeyID& creator);
    
    // Namespace management
    bool UpdateNamespace(const NamespaceInfo& namespaceInfo);
    bool RenewNamespace(const std::string& namespaceId, const CKeyID& owner, 
                       int renewalPeriod = 0);
    bool TransferNamespace(const std::string& namespaceId, const CKeyID& owner,
                         const CKeyID& newOwner);
    
    // Namespace pricing
    CAmount CalculateMinPrice(const std::string& namespaceId);
    CAmount CalculateRenewalFee(const std::string& namespaceId);
    
    // Pricing tiers
    bool AddPricingTier(const std::string& namespaceId, int minLength, CAmount minPrice);
    bool RemovePricingTier(const std::string& namespaceId, int minLength);
    std::vector<PricingTier> GetPricingTiers(const std::string& namespaceId);
    
    // Namespace information
    bool GetNamespaceInfo(const std::string& namespaceId, NamespaceInfo& info);
    std::vector<NamespaceInfo> GetNamespaces();
    std::vector<AuctionInfo> GetActiveAuctions();
    bool GetAuctionInfo(const uint256& auctionId, AuctionInfo& auction);
    
private:
    ReddIDManager* m_reddIDManager;
    
    // Default namespace configuration
    bool GetDefaultNamespaceConfig(NamespaceInfo& config);
};

3.2.4 Namespace Rules

  • Namespace identifiers must be 1-15 characters
  • Valid characters include lowercase letters (a-z), numbers (0-9), and hyphen (-)
  • Identifiers cannot start or end with a hyphen
  • Identifiers cannot contain consecutive hyphens

3.2.5 Default Namespace Configuration

Parameter Default Value
allow_numbers true
allow_hyphens true
allow_underscores true
min_length 3
max_length 32
renewal_period 365 days
grace_period 30 days
namespace_revenue_pct 10%
burn_pct 70%
node_pct 15%
dev_pct 5%
min_auction_duration 3 days
max_auction_duration 7 days
min_bid_increment 5.0%

3.3 AuctionManager

3.3.1 Purpose

The AuctionManager handles the creation, bidding, and settlement of auctions for both namespaces and user IDs, implementing the market-driven allocation system.

3.3.2 Responsibilities

  • Create and validate auction parameters
  • Process bids and enforce auction rules
  • Implement anti-sniping protections
  • Calculate auction settlements and distribute proceeds
  • Enforce deposit requirements
  • Manage auction state transitions
  • Track auction and bid history

3.3.3 Key Methods

class AuctionManager {
public:
    // Initialization
    AuctionManager(ReddIDManager* reddIDManager);
    bool Initialize();
    
    // Auction creation
    bool CreateAuction(const std::string& name, const std::string& namespaceId,
                     const CKeyID& creator, CAmount reservePrice,
                     int durationDays, AuctionType type, uint256& auctionId);
    
    // Bidding
    bool PlaceBid(const uint256& auctionId, const CKeyID& bidder,
                CAmount bidAmount, uint256& bidId);
    
    // Auction finalization
    bool FinalizeAuction(const uint256& auctionId);
    bool CancelAuction(const uint256& auctionId, const CKeyID& creator);
    
    // Refunds
    bool ProcessRefund(const uint256& bidId);
    bool ProcessAllRefunds(const uint256& auctionId);
    
    // Anti-sniping
    bool ExtendAuction(const uint256& auctionId, int extensionMinutes);
    
    // Information retrieval
    bool GetAuctionInfo(const uint256& auctionId, AuctionInfo& auction);
    bool GetBidInfo(const uint256& bidId, BidInfo& bid);
    std::vector<AuctionInfo> GetActiveAuctions();
    std::vector<AuctionInfo> GetAuctionsByNamespace(const std::string& namespaceId);
    std::vector<BidInfo> GetAuctionBids(const uint256& auctionId);
    
    // Auction validation
    bool IsValidMinimumBid(const uint256& auctionId, CAmount bidAmount);
    CAmount CalculateMinimumBid(const uint256& auctionId);
    CAmount CalculateDepositAmount(CAmount bidAmount, const AuctionInfo& auction);
    
private:
    ReddIDManager* m_reddIDManager;
    
    // Helper methods
    bool DistributeAuctionProceeds(const AuctionInfo& auction);
    bool ProcessExtensionConditions(const uint256& auctionId, const BidInfo& bid);
};

3.3.4 Auction States

enum AuctionState {
    AUCTION_PENDING = 0,   // Auction created but not yet active
    AUCTION_ACTIVE = 1,    // Auction open for bidding
    AUCTION_ENDED = 2,     // Auction time elapsed, awaiting finalization
    AUCTION_FINALIZED = 3, // Auction settled to winner
    AUCTION_CANCELED = 4   // Auction canceled by creator (only if no bids)
};

3.3.5 Auction Types

enum AuctionType {
    AUCTION_STANDARD = 0,  // Standard auction for most identifiers
    AUCTION_PREMIUM = 1,   // Premium auction for high-value identifiers
    AUCTION_VERIFIED = 2,  // Auction requiring identity verification
    AUCTION_RENEWAL = 3    // Auction for expired identifiers
};

3.3.6 Anti-Sniping Rules

  1. If a bid is placed within the final 10% of the auction duration, the auction is extended
  2. Extension time is 12 hours for namespace auctions and 6 hours for user ID auctions
  3. Maximum of 3 extensions per auction to prevent indefinite auctions
  4. Extension information is relayed with high priority through the P2P network

3.4 ProfileManager

3.4.1 Purpose

The ProfileManager handles ReddID profiles, social connections, reputation, and cross-namespace identity resolution.

3.4.2 Responsibilities

  • Manage ReddID registration and profiles
  • Process profile updates and verification
  • Handle social connections between ReddIDs
  • Calculate and update reputation scores
  • Provide namespace resolution for ReddIDs
  • Maintain cross-namespace identity linking

3.4.3 Key Methods

class ProfileManager {
public:
    // Initialization
    ProfileManager(ReddIDManager* reddIDManager);
    bool Initialize();
    
    // ReddID management
    bool RegisterReddID(const std::string& reddId, const CKeyID& owner,
                      const ReddIDProfile& profile);
    bool UpdateProfile(const std::string& reddId, const ReddIDProfile& profile,
                     const CKeyID& owner);
    bool RenewReddID(const std::string& reddId, const CKeyID& owner);
    bool DeactivateReddID(const std::string& reddId, const CKeyID& owner);
    
    // Profile retrieval
    bool GetProfile(const std::string& reddId, ReddIDProfile& profile);
    bool GetProfilesByOwner(const CKeyID& owner, std::vector<std::string>& reddIds);
    
    // Social connections
    bool CreateConnection(const ReddIDConnection& connection);
    bool UpdateConnection(const ReddIDConnection& connection);
    bool RemoveConnection(const std::string& fromReddId, const std::string& toReddId,
                        const CKeyID& owner);
    std::vector<ReddIDConnection> GetConnections(const std::string& reddId);
    std::vector<ReddIDConnection> GetIncomingConnections(const std::string& reddId);
    
    // Reputation
    bool GetReputation(const std::string& reddId, ReddIDReputation& reputation);
    bool UpdateReputation(const ReddIDReputation& reputation);
    bool CalculateReputation(const std::string& reddId, ReddIDReputation& reputation);
    
    // Cross-namespace resolution
    bool LinkUserID(const std::string& reddId, const std::string& name,
                  const std::string& namespaceId, bool isPrimary);
    bool UnlinkUserID(const std::string& reddId, const std::string& namespaceId);
    bool ResolveReddID(const std::string& name, const std::string& namespaceId,
                     std::string& reddId);
    bool GetLinkedUserIDs(const std::string& reddId,
                        std::vector<ReddIDNamespaceResolution>& resolutions);
    
    // Database access
    ReddIDDB* GetDB() { return m_reddIDManager->GetReddIDDB(); }
    
private:
    ReddIDManager* m_reddIDManager;
    
    // Helper methods
    bool ValidateReddIDFormat(const std::string& reddId);
    bool ValidateProfile(const ReddIDProfile& profile);
    bool ValidateConnection(const ReddIDConnection& connection);
};

3.4.4 Social Connection Types

enum SocialConnectionType {
    CONNECTION_FOLLOW = 0,   // One-way connection (like Twitter)
    CONNECTION_FRIEND = 1,   // Two-way, mutual connection
    CONNECTION_ENDORSE = 2,  // Reputation-affecting positive connection
    CONNECTION_BLOCK = 3     // Negative connection for filtering
};

3.4.5 Privacy Levels

enum PrivacyLevel {
    PRIVACY_PUBLIC = 0,      // Visible to anyone
    PRIVACY_FRIENDS = 1,     // Visible to connections only
    PRIVACY_PRIVATE = 2      // Visible to owner only
};

3.4.6 Verification Levels

enum VerificationLevel {
    VERIFICATION_NONE = 0,       // No verification
    VERIFICATION_SELF = 1,       // Self-attested information
    VERIFICATION_COMMUNITY = 2,  // Peer-verified
    VERIFICATION_OFFICIAL = 3    // Officially verified entity
};

3.4.7 Reputation Calculation

The reputation system calculates scores based on several factors:

  1. Longevity - Account age and stability (20%)
  2. Transaction - Payment history, volume, and consistency (25%)
  3. Engagement - Network activity and connections (20%)
  4. Verification - Identity verification level (15%)
  5. Auction - Bidding behavior and payment reliability (20%)

The actual calculation applies weighting and normalization to produce a score from 0-100.

3.5 ReddIDDB

3.5.1 Purpose

The ReddIDDB component provides persistent storage for all identity and auction data, serving as the database layer for the ReddID system.

3.5.2 Responsibilities

  • Implement database schema for all ReddID data
  • Provide CRUD operations for all data types
  • Manage database transactions and consistency
  • Implement efficient query patterns
  • Handle data versioning and migration
  • Provide backup and recovery functionality

3.5.3 Key Methods

class ReddIDDB {
public:
    // Initialization
    ReddIDDB(const fs::path& dataDir);
    bool Initialize();
    void Shutdown();
    
    // Database transactions
    bool BeginTransaction();
    bool CommitTransaction();
    bool AbortTransaction();
    
    // Namespace operations
    bool WriteNamespace(const NamespaceInfo& namespaceInfo);
    bool ReadNamespace(const std::string& namespaceId, NamespaceInfo& namespaceInfo);
    bool EraseNamespace(const std::string& namespaceId);
    bool ListNamespaces(std::vector<std::string>& namespaceIds);
    
    // Pricing tier operations
    bool WritePricingTier(const std::string& namespaceId, const PricingTier& tier);
    bool ReadPricingTier(const std::string& namespaceId, int minLength, PricingTier& tier);
    bool ErasePricingTier(const std::string& namespaceId, int minLength);
    bool ListPricingTiers(const std::string& namespaceId, std::vector<PricingTier>& tiers);
    
    // User ID operations
    bool WriteUserID(const UserIDInfo& userID);
    bool ReadUserID(const std::string& name, const std::string& namespaceId, 
                  UserIDInfo& userID);
    bool EraseUserID(const std::string& name, const std::string& namespaceId);
    bool ExistsUserID(const std::string& name, const std::string& namespaceId);
    bool ListUserIDs(const std::string& namespaceId, std::vector<std::string>& names);
    bool ListUserIDsByOwner(const CKeyID& owner, std::vector<UserIDInfo>& userIDs);
    
    // Auction operations
    bool WriteAuction(const AuctionInfo& auction);
    bool ReadAuction(const uint256& auctionId, AuctionInfo& auction);
    bool EraseAuction(const uint256& auctionId);
    bool ListAuctions(std::vector<uint256>& auctionIds);
    bool ListAuctionsByNamespace(const std::string& namespaceId, 
                               std::vector<uint256>& auctionIds);
    bool ListAuctionsByState(AuctionState state, std::vector<uint256>& auctionIds);
    
    // Bid operations
    bool WriteBid(const BidInfo& bid);
    bool ReadBid(const uint256& bidId, BidInfo& bid);
    bool EraseBid(const uint256& bidId);
    bool ListBidsByAuction(const uint256& auctionId, std::vector<uint256>& bidIds);
    bool ListBidsByBidder(const CKeyID& bidder, std::vector<uint256>& bidIds);
    
    // ReddID profile operations
    bool WriteProfile(const ReddIDProfile& profile);
    bool ReadProfile(const std::string& reddId, ReddIDProfile& profile);
    bool EraseProfile(const std::string& reddId);
    bool ListProfiles(std::vector<std::string>& reddIds);
    bool ListProfilesByOwner(const CKeyID& owner, std::vector<std::string>& reddIds);
    
    // Reputation operations
    bool WriteReputation(const ReddIDReputation& reputation);
    bool ReadReputation(const std::string& reddId, ReddIDReputation& reputation);
    bool WriteReputationHistory(const ReddIDReputation& reputation);
    bool GetReputationHistory(const std::string& reddId, 
                            std::vector<ReddIDReputation>& history,
                            int64_t startTime = 0, int count = 10);
    
    // Connection operations
    bool WriteConnection(const ReddIDConnection& connection);
    bool ReadConnection(const std::string& fromReddId, const std::string& toReddId,
                       ReddIDConnection& connection);
    bool EraseConnection(const std::string& fromReddId, const std::string& toReddId);
    bool ListConnectionsByFrom(const std::string& fromReddId,
                             std::vector<ReddIDConnection>& connections);
    bool ListConnectionsByTo(const std::string& toReddId,
                           std::vector<ReddIDConnection>& connections);
    
    // Namespace resolution
    bool WriteResolution(const ReddIDNamespaceResolution& resolution);
    bool ReadResolution(const std::string& reddId, const std::string& namespaceId,
                      ReddIDNamespaceResolution& resolution);
    bool EraseResolution(const std::string& reddId, const std::string& namespaceId);
    bool ListResolutionsByReddID(const std::string& reddId,
                              std::vector<ReddIDNamespaceResolution>& resolutions);
    bool ResolveUserID(const std::string& name, const std::string& namespaceId,
                     std::string& reddId);
    
private:
    fs::path m_dataDir;
    std::unique_ptr<CDBWrapper> m_db;
    
    // Database prefixes for different data types
    static const char DB_NAMESPACE = 'n';
    static const char DB_PRICING_TIER = 'p';
    static const char DB_USER_ID = 'u';
    static const char DB_AUCTION = 'a';
    static const char DB_BID = 'b';
    static const char DB_PROFILE = 'i';
    static const char DB_REPUTATION = 'r';
    static const char DB_REPUTATION_HISTORY = 'h';
    static const char DB_CONNECTION = 'c';
    static const char DB_RESOLUTION = 's';
};

3.5.4 Database Organization

The database is organized using LevelDB with custom prefixes for different data types. This supports efficient lookups and range scans while maintaining data integrity.

3.5.5 Transaction Management

The ReddIDDB implements atomic transactions to ensure data consistency across related operations:

  1. Begin transaction with BeginTransaction()
  2. Perform multiple write operations
  3. Commit changes with CommitTransaction() or roll back with AbortTransaction()

3.6 ReddIDP2PManager

3.6.1 Purpose

The ReddIDP2PManager extends the Reddcoin P2P network protocol to support efficient propagation of identity data, auction information, and reputation updates.

3.6.2 Responsibilities

  • Define and handle new P2P message types
  • Propagate auction announcements and bids
  • Distribute profile updates and social connections
  • Synchronize namespace configurations
  • Relay reputation updates
  • Implement subscription and filtering mechanisms
  • Handle message validation and rate limiting

3.6.3 Key Methods

class ReddIDP2PManager {
public:
    // Initialization
    ReddIDP2PManager(ReddIDManager* reddIDManager);
    bool Initialize();
    void Shutdown();
    
    // Message processing
    bool ProcessReddIDMessage(CNode* pfrom, const std::string& strCommand,
                           CDataStream& vRecv, int64_t nTimeReceived, 
                           const CChainParams& chainparams);
    
    // Message sending
    bool SendNamespaceAuctionAnnounce(const AuctionInfo& auction);
    bool SendNamespaceAuctionBid(const BidInfo& bid);
    bool SendNamespaceAuctionFinalize(const uint256& auctionId);
    bool SendNamespaceConfigRequest(const std::string& namespaceId, CNode* pnode = nullptr);
    bool SendNamespaceConfigResponse(const std::string& namespaceId, CNode* pnode = nullptr);
    
    bool SendUserIDAuctionAnnounce(const AuctionInfo& auction);
    bool SendUserIDAuctionBid(const BidInfo& bid);
    bool SendUserIDAuctionFinalize(const uint256& auctionId);
    
    bool SendReddIDRegisterAnnounce(const std::string& reddId);
    bool SendReddIDProfileUpdate(const std::string& reddId);
    bool SendReddIDConnection(const ReddIDConnection& connection);
    bool SendReddIDProfileRequest(const std::string& reddId, CNode* pnode = nullptr);
    bool SendReddIDProfileResponse(const std::string& reddId, CNode* pnode = nullptr);
    bool SendReddIDReputationUpdate(const std::string& reddId);
    
    // Subscription management
    bool AddNamespaceSubscription(const std::string& namespaceId, CNode* pnode);
    bool RemoveNamespaceSubscription(const std::string& namespaceId, CNode* pnode);
    bool AddReddIDSubscription(const std::string& reddId, CNode* pnode);
    bool RemoveReddIDSubscription(const std::string& reddId, CNode* pnode);
    
    // Rate limiting
    bool CheckMessageRate(CNode* pfrom, const std::string& strCommand);
    
private:
    ReddIDManager* m_reddIDManager;
    
    // Maps to track subscriptions
    std::map<std::string, std::set<NodeId>> m_namespaceSubscriptions;
    std::map<std::string, std::set<NodeId>> m_reddIDSubscriptions;
    
    // Rate limiting data
    std::map<NodeId, std::map<std::string, std::pair<int64_t, int>>> m_messageRateLimits;
    
    // Message handlers
    bool HandleNamespaceAuctionAnnounce(CNode* pfrom, CDataStream& vRecv);
    bool HandleNamespaceAuctionBid(CNode* pfrom, CDataStream& vRecv);
    bool HandleNamespaceAuctionFinalize(CNode* pfrom, CDataStream& vRecv);
    bool HandleNamespaceConfigRequest(CNode* pfrom, CDataStream& vRecv);
    bool HandleNamespaceConfigResponse(CNode* pfrom, CDataStream& vRecv);
    
    bool HandleUserIDAuctionAnnounce(CNode* pfrom, CDataStream& vRecv);
    bool HandleUserIDAuctionBid(CNode* pfrom, CDataStream& vRecv);
    bool HandleUserIDAuctionFinalize(CNode* pfrom, CDataStream& vRecv);
    
    bool HandleReddIDRegisterAnnounce(CNode* pfrom, CDataStream& vRecv);
    bool HandleReddIDProfileUpdate(CNode* pfrom, CDataStream& vRecv);
    bool HandleReddIDConnection(CNode* pfrom, CDataStream& vRecv);
    bool HandleReddIDProfileRequest(CNode* pfrom, CDataStream& vRecv);
    bool HandleReddIDProfileResponse(CNode* pfrom, CDataStream& vRecv);
    bool HandleReddIDReputationUpdate(CNode* pfrom, CDataStream& vRecv);
};

3.6.4 Message Prioritization

Messages are prioritized for relay based on time sensitivity:

Priority Message Types Description
High Auction bids, auction finalization Time-sensitive information affecting resource allocation
Medium Profile updates, connection changes Identity information with moderate time sensitivity
Low Configuration requests, reputation updates Background information with lower time sensitivity

3.6.5 Rate Limiting

To prevent spam and DoS attacks, rate limiting is implemented on a per-node, per-message type basis:

Message Type Rate Limit
Auction announcements 10 per minute
Bids 20 per minute
Profile updates 5 per minute
Connection operations 15 per minute
Configuration requests 20 per minute

4. Database Schema

4.1 Table Definitions

The following tables define the core data storage for the ReddID system:

4.1.1 Namespace Tables

namespaces
Column Type Description Constraints
id VARCHAR(15) Namespace identifier PRIMARY KEY
owner BLOB Owner's address in binary format NOT NULL
allow_numbers BOOLEAN Whether numbers are allowed NOT NULL
allow_hyphens BOOLEAN Whether hyphens are allowed NOT NULL
allow_underscores BOOLEAN Whether underscores are allowed NOT NULL
min_length INT Minimum name length NOT NULL
max_length INT Maximum name length NOT NULL
renewal_period INT Days until renewal required NOT NULL
grace_period INT Days in grace period NOT NULL
namespace_revenue_pct INT % of auctions going to namespace owner NOT NULL
burn_pct INT % of auctions being burned NOT NULL
node_pct INT % of auctions going to node operators NOT NULL
dev_pct INT % of auctions going to development fund NOT NULL
min_auction_duration INT Minimum auction duration in days NOT NULL
max_auction_duration INT Maximum auction duration in days NOT NULL
min_bid_increment REAL Minimum bid increment percentage NOT NULL
config_hash BLOB(32) Hash of this configuration NOT NULL
last_updated INT64 When configuration was last updated NOT NULL
expiration INT64 When namespace ownership expires NOT NULL
namespace_pricing_tiers
Column Type Description Constraints
namespace_id VARCHAR(15) Namespace identifier PRIMARY KEY, FOREIGN KEY
min_length INT Minimum length for this tier PRIMARY KEY
min_price INT64 Minimum price for names in this tier NOT NULL

4.1.2 User ID Tables

user_ids
Column Type Description Constraints
name VARCHAR(64) Name portion of the ID PRIMARY KEY
namespace_id VARCHAR(15) Namespace portion of the ID PRIMARY KEY, FOREIGN KEY
owner BLOB Owner's address in binary format NOT NULL
registration_time INT64 When the ID was registered NOT NULL
expiration_time INT64 When the ID expires NOT NULL
last_transaction INT64 Timestamp of last transaction NOT NULL
transaction_count INT Number of transactions NOT NULL
metadata_hash BLOB(32) Hash of additional metadata NULL

4.1.3 Auction Tables

auctions
Column Type Description Constraints
auction_id BLOB(32) Unique identifier for the auction PRIMARY KEY
name VARCHAR(64) Name portion of the ID being auctioned NULL
namespace_id VARCHAR(15) Namespace portion of the ID NOT NULL
creator_address BLOB Creator's address in binary format NOT NULL
start_time INT64 Start time (unix timestamp) NOT NULL
end_time INT64 End time (unix timestamp) NOT NULL
reserve_price INT64 Minimum acceptable bid NOT NULL
current_bid INT64 Highest current bid amount NOT NULL
current_bidder BLOB Address of highest bidder NULL
deposit_amount INT64 Required deposit amount NOT NULL
state INT Current auction state NOT NULL
type INT Auction type NOT NULL
metadata_hash BLOB(32) Hash of additional metadata NULL
block_height INT Block height when auction was created NOT NULL
txid BLOB(32) Transaction ID of creation transaction NOT NULL
bids
Column Type Description Constraints
bid_id BLOB(32) Unique identifier for the bid PRIMARY KEY
auction_id BLOB(32) Reference to the auction FOREIGN KEY, NOT NULL
bidder_address BLOB Bidder's address in binary format NOT NULL
bidder_reddid VARCHAR(32) Bidder's ReddID (if any) NULL
bid_amount INT64 Bid amount NOT NULL
deposit_amount INT64 Deposit amount paid NOT NULL
bid_time INT64 Time when bid was placed NOT NULL
txid BLOB(32) Transaction ID of the bid transaction NOT NULL
is_winner BOOLEAN Whether this bid won the auction NOT NULL
refunded BOOLEAN Whether the deposit was refunded NOT NULL

4.1.4 ReddID Profile Tables

reddid_profiles
Column Type Description Constraints
reddid VARCHAR(32) The ReddID PRIMARY KEY
owner BLOB Owner's address in binary format NOT NULL
display_name VARCHAR(64) User-selected display name NOT NULL
avatar_hash BLOB(32) IPFS hash of avatar image NULL
bio VARCHAR(256) Short biography or description NULL
email_hash BLOB(32) Hash of verified email NULL
social_data TEXT JSON of linked social profiles NULL
messaging_pubkey BLOB Public key for encrypted messaging NULL
verification_status INT Verification level (0-3) NOT NULL
creation_time INT64 When the ReddID was created NOT NULL
last_updated INT64 When profile was last updated NOT NULL
expiration_time INT64 When the ReddID expires NOT NULL
active BOOLEAN Whether the ReddID is currently active NOT NULL
flags INT Bitfield of profile flags/settings NOT NULL
reddid_connections
Column Type Description Constraints
from_reddid VARCHAR(32) Source ReddID PRIMARY KEY, FOREIGN KEY
to_reddid VARCHAR(32) Target ReddID PRIMARY KEY, FOREIGN KEY
connection_type INT Type (0=follow, 1=friend, 2=endorse, 3=block) NOT NULL
creation_time INT64 When connection was established NOT NULL
last_interaction INT64 When last interaction occurred NOT NULL
visibility INT Privacy setting (0=public, 1=friends, 2=private) NOT NULL
metadata TEXT Additional connection metadata NULL
txid BLOB(32) Transaction ID of the connection operation NOT NULL
reddid_reputation
Column Type Description Constraints
reddid VARCHAR(32) The ReddID PRIMARY KEY, FOREIGN KEY
overall_score REAL Aggregate reputation score (0-100) NOT NULL
longevity_score REAL Score component for account age NOT NULL
transaction_score REAL Score component for transaction history NOT NULL
engagement_score REAL Score component for community engagement NOT NULL
verification_score REAL Score component for verification depth NOT NULL
auction_score REAL Score component for auction behavior NOT NULL
last_calculated INT64 When the score was last calculated NOT NULL
calculation_proof BLOB Proof of calculation correctness NULL
calculator_signatures TEXT JSON of node signatures validating the calculation NULL
reddid_namespace_resolution
Column Type Description Constraints
reddid VARCHAR(32) The ReddID PRIMARY KEY, FOREIGN KEY
namespace_id VARCHAR(15) Namespace identifier PRIMARY KEY, FOREIGN KEY
user_id VARCHAR(64) User ID within that namespace NOT NULL
is_primary BOOLEAN Whether this is the primary namespace for the ReddID NOT NULL
auto_update BOOLEAN Whether profile changes propagate to this namespace NOT NULL
last_synced INT64 When last synchronized NOT NULL

4.2 Indexes

To optimize common query patterns, the following indexes are implemented:

Table Index Columns Purpose
namespaces idx_namespaces_owner owner Quickly find namespaces by owner
namespaces idx_namespaces_expiration expiration Find expiring namespaces efficiently
user_ids idx_user_ids_owner owner Quickly find user IDs by owner
user_ids idx_user_ids_namespace namespace_id Find all user IDs in a namespace
user_ids idx_user_ids_expiration expiration_time Find expiring user IDs efficiently
auctions idx_auctions_namespace namespace_id Find auctions by namespace
auctions idx_auctions_state state Find auctions by state (e.g., active)
auctions idx_auctions_end_time end_time Find auctions by end time
bids idx_bids_auction auction_id Find all bids for an auction
bids idx_bids_bidder bidder_address Find all bids by a bidder
reddid_profiles idx_profiles_owner owner Find profiles by owner
reddid_profiles idx_profiles_expiration expiration_time Find expiring profiles
reddid_connections idx_connections_from from_reddid Find outgoing connections
reddid_connections idx_connections_to to_reddid Find incoming connections
reddid_reputation idx_reputation_score overall_score Find ReddIDs by reputation score
reddid_namespace_resolution idx_resolution_namespace_user namespace_id, user_id Resolve from namespace.user to ReddID

4.3 Relationships

The following diagram illustrates the key relationships between database tables:

    erDiagram
        namespaces {
            VARCHAR(15) id PK
            BLOB owner
            BOOLEAN allow_numbers
            BOOLEAN allow_hyphens
            BOOLEAN allow_underscores
            INT min_length
            INT max_length
            INT renewal_period
            INT grace_period
            INT namespace_revenue_pct
            INT burn_pct
            INT node_pct
            INT dev_pct
            INT min_auction_duration
            INT max_auction_duration
            REAL min_bid_increment
            BLOB(32) config_hash
            INT64 last_updated
            INT64 expiration
        }
        
        namespace_pricing_tiers {
            VARCHAR(15) namespace_id PK,FK
            INT min_length PK
            INT64 min_price
        }
        
        user_ids {
            VARCHAR(64) name PK
            VARCHAR(15) namespace_id PK,FK
            BLOB owner
            INT64 registration_time
            INT64 expiration_time
            INT64 last_transaction
            INT transaction_count
            BLOB(32) metadata_hash
        }
        
        auctions {
            BLOB(32) auction_id PK
            VARCHAR(64) name
            VARCHAR(15) namespace_id
            BLOB creator_address
            INT64 start_time
            INT64 end_time
            INT64 reserve_price
            INT64 current_bid
            BLOB current_bidder
            INT64 deposit_amount
            INT state
            INT type
            BLOB(32) metadata_hash
            INT block_height
            BLOB(32) txid
        }
        
        bids {
            BLOB(32) bid_id PK
            BLOB(32) auction_id FK
            BLOB bidder_address
            VARCHAR(32) bidder_reddid
            INT64 bid_amount
            INT64 deposit_amount
            INT64 bid_time
            BLOB(32) txid
            BOOLEAN is_winner
            BOOLEAN refunded
        }
        
        reddid_profiles {
            VARCHAR(32) reddid PK
            BLOB owner
            VARCHAR(64) display_name
            BLOB(32) avatar_hash
            VARCHAR(256) bio
            BLOB(32) email_hash
            TEXT social_data
            BLOB messaging_pubkey
            INT verification_status
            INT64 creation_time
            INT64 last_updated
            INT64 expiration_time
            BOOLEAN active
            INT flags
        }
        
        reddid_connections {
            VARCHAR(32) from_reddid PK,FK
            VARCHAR(32) to_reddid PK,FK
            INT connection_type
            INT64 creation_time
            INT64 last_interaction
            INT visibility
            TEXT metadata
            BLOB(32) txid
        }
        
        reddid_reputation {
            VARCHAR(32) reddid PK,FK
            REAL overall_score
            REAL longevity_score
            REAL transaction_score
            REAL engagement_score
            REAL verification_score
            REAL auction_score
            INT64 last_calculated
            BLOB calculation_proof
            TEXT calculator_signatures
        }
        
        reddid_namespace_resolution {
            VARCHAR(32) reddid PK,FK
            VARCHAR(15) namespace_id PK,FK
            VARCHAR(64) user_id
            BOOLEAN is_primary
            BOOLEAN auto_update
            INT64 last_synced
        }
        
        namespaces ||--o{ namespace_pricing_tiers : has
        namespaces ||--o{ user_ids : contains
        namespaces ||--o{ auctions : hosts
        
        user_ids ||--o{ reddid_namespace_resolution : resolves_to
        
        auctions ||--o{ bids : receives
        
        reddid_profiles ||--o{ reddid_connections : establishes
        reddid_profiles ||--o{ reddid_reputation : has
        reddid_profiles ||--o{ reddid_namespace_resolution : resolves_to
        
        bids }o--o{ reddid_profiles : placed_by
        
        reddid_connections }o--o{ reddid_profiles : connects_to
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4.4 Data Flow Examples

4.4.1 User ID Registration Flow

  1. A namespace exists in namespaces table
  2. User creates auction in auctions table for a new user ID
  3. Other users place bids in bids table
  4. Upon auction conclusion, winner is recorded in auctions table
  5. New record created in user_ids table with winning bidder as owner
  6. Optionally, a reddid_namespace_resolution record links the User ID to a ReddID
sequenceDiagram
    participant User as User
    participant Other Users as Other Users
    participant Namespaces as namespaces table
    participant Auctions as auctions table
    participant Bids as bids table
    participant UserIDs as user_ids table
    participant Resolution as reddid_namespace_resolution table
    
    Note over Namespaces: 1. Namespace exists
    
    User->>+Auctions: 2. Create auction for new user ID
    Auctions-->>-User: Auction created
    
    loop 3. Bidding period
        Other Users->>+Bids: Place bids
        Bids-->>-Other Users: Bid recorded
    end
    
    Note over Auctions: 4. Auction concludes
    Auctions->>Auctions: Record winner
    
    Auctions->>+UserIDs: 5. Create user ID record
    UserIDs-->>-Auctions: User ID created with winning bidder as owner
    
    opt 6. Optional ReddID linking
        User->>+Resolution: Link User ID to ReddID
        Resolution-->>-User: Resolution record created
    end
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4.4.2 ReddID Profile Creation Flow

  1. User registers a ReddID in the reddid_profiles table
  2. System calculates initial reputation in reddid_reputation table
  3. User establishes connections in reddid_connections table
  4. User links existing User IDs via reddid_namespace_resolution bleta
sequenceDiagram
    participant User as User
    participant Profiles as reddid_profiles table
    participant Reputation as reddid_reputation table
    participant Connections as reddid_connections table
    participant Resolution as reddid_namespace_resolution table
    
    User->>+Profiles: 1. Register ReddID
    Profiles-->>-User: Profile created
    
    Profiles->>+Reputation: 2. Calculate initial reputation
    Reputation-->>-Profiles: Reputation record created
    
    User->>+Connections: 3. Establish connections
    Connections-->>-User: Connection records created
    
    User->>+Resolution: 4. Link existing User IDs
    Resolution-->>-User: Resolution records created
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5. Blockchain Integration

5.1 Transaction Types

The ReddID system integrates with the Reddcoin blockchain using OP_RETURN operations to record key identity operations. The following transaction types are defined:

5.1.1 Namespace Transactions

Operation Description Estimated Size
OP_NAMESPACE_AUCTION_CREATE Create a namespace auction ~75 bytes
OP_NAMESPACE_AUCTION_BID Place bid on namespace auction ~42 bytes
OP_NAMESPACE_AUCTION_FINALIZE Finalize namespace auction ~42 bytes
OP_NAMESPACE_CONFIG_UPDATE Update namespace configuration ~70 bytes
OP_NAMESPACE_TRANSFER Transfer namespace ownership ~55 bytes
OP_NAMESPACE_RENEW Renew namespace registration ~40 bytes

5.1.2 User ID Transactions

Operation Description Estimated Size
OP_USERID_AUCTION_CREATE Create user ID auction ~60 bytes
OP_USERID_AUCTION_BID Place bid on user ID auction ~42 bytes
OP_USERID_AUCTION_FINALIZE Finalize user ID auction ~42 bytes
OP_USERID_TRANSFER Transfer user ID ownership ~55 bytes
OP_USERID_RENEW Renew user ID registration ~40 bytes

5.1.3 ReddID Transactions

Operation Description Estimated Size
OP_REDDID_REGISTER Register a new ReddID ~75 bytes
OP_REDDID_UPDATE Update ReddID profile ~50 bytes
OP_REDDID_CONNECTION Create/modify social connection ~65 bytes
OP_REDDID_RESOLVE Link ReddID to namespace user ID ~60 bytes
OP_REDDID_RENEW Renew ReddID registration ~40 bytes

5.2 OP_RETURN Data Structures

Each transaction type uses a specialized OP_RETURN format to encode the relevant data compactly:

5.2.1 Namespace Auction Creation

0     2  3          7    8         16   17   25    26     34       35    39
|-----|--|----------|----|---------|----|-----|-----|------|---------|----|
magic op  auctionId type nameHash  ns   start  end  reserve depositPct

Where:

  • magic (2 bytes): Network identifier (0xD4D8 for mainnet)
  • op (1 byte): Operation code (0x7B for namespace auction creation)
  • auctionId (4 bytes): First 4 bytes of auction identifier
  • type (1 byte): Auction type (0=standard, 1=premium)
  • nameHash (8 bytes): First 8 bytes of namespace name hash
  • ns (up to 15 bytes): Namespace identifier string
  • start (8 bytes): Start time as Unix timestamp
  • end (8 bytes): End time as Unix timestamp
  • reserve (8 bytes): Reserve price in satoshis
  • depositPct (1 byte): Deposit percentage (typically 20)

5.2.2 Namespace Auction Bid

0     2  3          7    8       16    17    25
|-----|--|----------|----|---------|----|-----|
magic op  auctionId hash bidAmount time

Where:

  • magic (2 bytes): Network identifier
  • op (1 byte): Operation code (0x7D for namespace auction bid)
  • auctionId (4 bytes): First 4 bytes of auction identifier
  • hash (8 bytes): Hash of bid data for verification
  • bidAmount (8 bytes): Bid amount in satoshis
  • time (8 bytes): Bid time as Unix timestamp

5.2.3 User ID Auction Creation

0     2  3                             39  
|----|--|-----------------------------|  
magic op   name.namespace_id (37 bytes)

Where:

  • magic (2 bytes): Network identifier
  • op (1 byte): Operation code (0x25 for user ID auction creation)
  • name.namespace_id (up to 37 bytes): Combined name and namespace ID

5.2.4 ReddID Registration

0     2  3                             35  36    44    45    109
|----|--|-----------------------------|-----|-----|------------|
magic op   reddid_id (32 bytes)       time  fee   profile_hash

Where:

  • magic (2 bytes): Network identifier
  • op (1 byte): Operation code (0x24 for ReddID registration)
  • reddid_id (up to 32 bytes): ReddID string
  • time (8 bytes): Registration time as Unix timestamp
  • fee (8 bytes): Registration fee in satoshis
  • profile_hash (up to 64 bytes): Hash of full profile data

5.3 Operation Codes

The system defines the following operation codes for different transaction types:

Hex Value Symbol Description Operation
0x7B { Create namespace auction OP_NAMESPACE_AUCTION_CREATE
0x7D } Bid on namespace auction OP_NAMESPACE_AUCTION_BID
0x5B [ Finalize namespace auction OP_NAMESPACE_AUCTION_FINALIZE
0x5D ] Cancel namespace auction OP_NAMESPACE_AUCTION_CANCEL
0x3C < Update namespace configuration OP_NAMESPACE_CONFIG_UPDATE
0x3E > Transfer namespace ownership OP_NAMESPACE_TRANSFER
0x5E ^ Renew namespace registration OP_NAMESPACE_RENEW
0x25 % Create user ID auction OP_USERID_AUCTION_CREATE
0x7C | Bid on user ID auction OP_USERID_AUCTION_BID
0x22 " Finalize user ID auction OP_USERID_AUCTION_FINALIZE
0x27 ' Cancel user ID auction OP_USERID_AUCTION_CANCEL
0x3A : Transfer user ID ownership OP_USERID_TRANSFER
0x3B ; Renew user ID registration OP_USERID_RENEW
0x24 $ Register a new ReddID OP_REDDID_REGISTER
0x23 # Update ReddID profile OP_REDDID_UPDATE
0x2B + Create/modify social connection OP_REDDID_CONNECTION
0x40 @ Link ReddID to namespace user ID OP_REDDID_RESOLVE
0x2A * Renew ReddID registration OP_REDDID_RENEW

5.4 Transaction Creation

The system creates blockchain transactions using the following process:

  1. Prepare the appropriate OP_RETURN data format for the desired operation
  2. Create a transaction with at least one input from the user's wallet
  3. Add normal outputs for payment or change as required
  4. Add an OP_RETURN output containing the formatted data
  5. Sign the transaction with the appropriate private key(s)
  6. Broadcast the transaction to the network

Example transaction creation pseudocode:

bool CreateReddIDTransaction(const std::vector<unsigned char>& data, CAmount feeRate, CMutableTransaction& mtx) {
    // Select inputs from wallet to cover the fee
    std::vector<COutput> vAvailableCoins;
    wallet->AvailableCoins(vAvailableCoins);
    
    // Calculate fee based on transaction size
    size_t dataSize = data.size();
    size_t txSize = 148 + dataSize + 34; // Input + OP_RETURN + change output
    CAmount fee = feeRate * txSize / 1000;
    
    // Find suitable inputs
    CAmount totalIn = 0;
    std::vector<COutput> selectedCoins;
    for (const auto& coin : vAvailableCoins) {
        if (coin.nDepth >= MINIMUM_CONFIRMATIONS) {
            selectedCoins.push_back(coin);
            totalIn += coin.tx->vout[coin.i].nValue;
            if (totalIn >= fee) {
                break;
            }
        }
    }
    
    if (totalIn < fee) {
        return false; // Insufficient funds
    }
    
    // Add inputs
    for (const auto& coin : selectedCoins) {
        mtx.vin.push_back(CTxIn(coin.tx->GetHash(), coin.i));
    }
    
    // Add OP_RETURN output
    CScript scriptData;
    scriptData << OP_RETURN << data;
    mtx.vout.push_back(CTxOut(0, scriptData));
    
    // Add change output if necessary
    if (totalIn > fee) {
        CScript scriptChange = wallet->GetChangeScript();
        mtx.vout.push_back(CTxOut(totalIn - fee, scriptChange));
    }
    
    return true;
}

5.5 Consensus Rules

The ReddID system extends the Reddcoin consensus rules with the following validations:

  1. Format Validation: Ensure all OP_RETURN data conforms to the defined formats
  2. Duplicate Prevention: Prevent duplicate namespace and user ID registrations
  3. Auction Validation: Enforce auction rules (minimum bids, timing, etc.)
  4. Authorization Validation: Verify operations are performed by authorized parties
  5. Economic Rule Enforcement: Enforce revenue distribution as per configuration

5.5.1 On-Chain vs. Off-Chain Validation

Some validation is performed on-chain (enforced by all nodes), while other validation is performed off-chain (by the ReddID system):

Validation Type Description
Basic format On-chain OP_RETURN format, operation codes
Namespace/ID availability On-chain Prevent duplicates
Authorization On-chain Key ownership verification
Auction state Off-chain Current auction state tracking
Bid validity Off-chain Minimum increment rules
Configuration validity Off-chain Namespace configuration rules
Reputation calculation Off-chain Complex reputation formulas

5.6 Transaction Processing

All ReddID transactions are processed through the chain in the following manner:

  1. Transaction is included in a block
  2. During block processing, ProcessIdTx() is called for each transaction
  3. OP_RETURN data is extracted and validated
  4. Valid operations update the ReddID database
  5. P2P messages are sent to propagate changes

The specific processing function depends on the operation code:

bool ReddIDManager::ProcessIdTx(const CTransaction& tx, int height) {
    // Extract OP_RETURN data if present
    std::vector<unsigned char> data;
    if (!GetOpReturnData(tx, data) || data.size() < 3) {
        return false; // Not a ReddID transaction or invalid format
    }
    
    // Check magic bytes
    if (data[0] != pnetParams->ReddIDMagic[0] || data[1] != pnetParams->ReddIDMagic[1]) {
        return false; // Invalid network magic
    }
    
    // Process based on operation code
    unsigned char opCode = data[2];
    switch (opCode) {
        case OP_NAMESPACE_AUCTION_CREATE:
            return ProcessNamespaceAuctionCreate(tx, data, height);
        case OP_NAMESPACE_AUCTION_BID:
            return ProcessNamespaceAuctionBid(tx, data, height);
        case OP_NAMESPACE_AUCTION_FINALIZE:
            return ProcessNamespaceAuctionFinalize(tx, data, height);
        // Additional cases for other operations...
        default:
            return false; // Unknown operation code
    }
}

6. P2P Protocol Extensions

6.1 New Message Types

The ReddID system extends the Reddcoin P2P protocol with new message types to facilitate identity data exchange:

6.1.1 Namespace Messages

Message Type Command String Description
MSG_NAMESPACE_AUCTION_ANNOUNCE nsauc Announce a new namespace auction
MSG_NAMESPACE_AUCTION_BID nsbid Announce a bid on a namespace auction
MSG_NAMESPACE_AUCTION_FINALIZE nsfin Announce namespace auction finalization
MSG_NAMESPACE_AUCTION_CANCEL nscnl Announce namespace auction cancellation
MSG_NAMESPACE_CONFIG_REQUEST nsreq Request namespace configuration
MSG_NAMESPACE_CONFIG_RESPONSE nsres Provide namespace configuration

6.1.2 User ID Messages

Message Type Command String Description
MSG_USERID_AUCTION_ANNOUNCE uidauc Announce a new user ID auction
MSG_USERID_AUCTION_BID uidbid Announce a bid on a user ID auction
MSG_USERID_AUCTION_FINALIZE uidfin Announce user ID auction finalization
MSG_USERID_AUCTION_CANCEL uidcnl Announce user ID auction cancellation

6.1.3 ReddID Messages

Message Type Command String Description
MSG_REDDID_REGISTER_ANNOUNCE ridreg Announce a new ReddID registration
MSG_REDDID_PROFILE_UPDATE ridupd Announce profile update
MSG_REDDID_CONNECTION ridcon Announce social connection change
MSG_REDDID_PROFILE_REQUEST ridreq Request profile data
MSG_REDDID_PROFILE_RESPONSE ridres Provide profile data
MSG_REDDID_REPUTATION_UPDATE ridrep Update reputation score
MSG_REDDID_RENEW_ANNOUNCE ridrn Announce a ReddID renewal

6.2 Message Format

All ReddID P2P messages follow a standard format:

┌───────────┬───────────┬────────────┬─────────────┐
│ Command   │ Length    │ Checksum   │ Payload     │
│ (12 bytes)│ (4 bytes) │ (4 bytes)  │ (variable)  │
└───────────┴───────────┴────────────┴─────────────┘

The payload format varies depending on the message type. For example, a namespace auction announcement:

┌───────────┬──────────────┬──────────┬───────────┬───────────┬─────────────┐
│ Auction ID│ Namespace ID │ Creator  │ Start Time│ End Time  │ Reserve     │
│ (32 bytes)│ (variable)   │ (20 bytes)│ (8 bytes) │ (8 bytes) │ (8 bytes)   │
└───────────┴──────────────┴──────────┴───────────┴───────────┴─────────────┘

6.3 Message Processing

P2P messages are processed through the following sequence:

  1. Message received by the node
  2. Basic validation (format, length, checksum)
  3. Rate limiting applied to prevent DoS attacks
  4. Message-specific validation based on type
  5. Database updated with message information
  6. Message relayed to other nodes based on relevance
  7. Node-specific handler called for UI updates
sequenceDiagram
    participant Sender as Sending Node
    participant Node as Receiving Node
    participant Validator as Message Validator
    participant RateLimiter as Rate Limiter
    participant Database as Database
    participant OtherNodes as Other Nodes
    participant UI as UI Handler
    
    Sender->>+Node: 1. Message received
    
    Node->>+Validator: 2. Basic validation
    Note over Validator: Format, length, checksum
    Validator-->>-Node: Validation result
    
    Node->>+RateLimiter: 3. Apply rate limiting
    Note over RateLimiter: Prevent DoS attacks
    RateLimiter-->>-Node: Rate check result
    
    Node->>Node: 4. Message-specific validation
    Note over Node: Based on message type
    
    Node->>+Database: 5. Update database
    Database-->>-Node: Update confirmation
    
    Node->>+OtherNodes: 6. Relay to relevant nodes
    OtherNodes-->>-Node: Relay acknowledgment
    
    Node->>+UI: 7. Call UI handler
    Note over UI: Update user interface
    UI-->>-Node: UI update confirmation
    
    Node-->>-Sender: Processing complete
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The entry point for message processing is the ProcessReddIDMessage method:

bool ReddIDP2PManager::ProcessReddIDMessage(CNode* pfrom, const std::string& strCommand,
                                        CDataStream& vRecv, int64_t nTimeReceived,
                                        const CChainParams& chainparams) {
    LogPrint(BCLog::REDDID, "ProcessReddIDMessage: %s, %u bytes\n", strCommand, vRecv.size());
    
    // Check rate limits
    if (!CheckMessageRate(pfrom, strCommand)) {
        LogPrint(BCLog::REDDID, "Rate limit exceeded for %s messages\n", strCommand);
        return false;
    }
    
    // Process message based on command
    if (strCommand == "nsauc")
        return HandleNamespaceAuctionAnnounce(pfrom, vRecv);
    else if (strCommand == "nsbid")
        return HandleNamespaceAuctionBid(pfrom, vRecv);
    else if (strCommand == "nsfin")
        return HandleNamespaceAuctionFinalize(pfrom, vRecv);
    else if (strCommand == "nscnl")
        return HandleNamespaceAuctionCancel(pfrom, vRecv);
    else if (strCommand == "nsreq")
        return HandleNamespaceConfigRequest(pfrom, vRecv);
    else if (strCommand == "nsres")
        return HandleNamespaceConfigResponse(pfrom, vRecv);
    // Additional handlers for other message types...
    
    return false; // Unknown command
}

6.4 Data Synchronization

The P2P network handles synchronization of identity data that is too large to fit in OP_RETURN transactions:

6.4.1 Configuration Synchronization

Namespace configurations are synchronized through a request-response pattern:

  1. Node encounters a namespace reference without local configuration
  2. Node sends MSG_NAMESPACE_CONFIG_REQUEST to peers
  3. Peers with the configuration respond with MSG_NAMESPACE_CONFIG_RESPONSE
  4. Node validates the configuration against the on-chain hash
  5. Configuration is stored in the local database
sequenceDiagram
    participant Node as Requesting Node
    participant Peers as Network Peers
    participant Blockchain as Blockchain
    participant DB as Local Database
    
    Note over Node: 1. Encounters namespace without local configuration
    
    Node->>+Peers: 2. Send MSG_NAMESPACE_CONFIG_REQUEST
    
    loop For peers with configuration
        Peers-->>-Node: 3. Respond with MSG_NAMESPACE_CONFIG_RESPONSE
    end
    
    Node->>+Blockchain: 4. Validate configuration
    Note over Node,Blockchain: Check against on-chain hash
    Blockchain-->>-Node: Validation result
    
    alt Configuration valid
        Node->>+DB: 5. Store configuration
        DB-->>-Node: Storage confirmation
    else Configuration invalid
        Node->>Node: Discard invalid configuration
        Note over Node: May blacklist peer if malicious
    end
Loading 
bool ReddIDP2PManager::HandleNamespaceConfigRequest(CNode* pfrom, CDataStream& vRecv) {
    std::string namespaceId;
    vRecv >> namespaceId;
    
    LogPrint(BCLog::REDDID, "Received namespace config request for %s\n", namespaceId);
    
    NamespaceInfo namespaceInfo;
    if (m_reddIDManager->GetNamespaceManager()->GetNamespaceInfo(namespaceId, namespaceInfo)) {
        // Send configuration response
        SendNamespaceConfigResponse(namespaceId, pfrom);
        return true;
    }
    
    return false; // We don't have this configuration
}

6.4.2 Profile Synchronization

ReddID profiles are synchronized using a similar pattern:

  1. Node encounters a ReddID reference without local profile data
  2. Node sends MSG_REDDID_PROFILE_REQUEST to peers
  3. Peers with the profile respond with MSG_REDDID_PROFILE_RESPONSE
  4. Node validates the profile against the on-chain hash
  5. Profile is stored in the local database
sequenceDiagram
    participant Node as Requesting Node
    participant Peers as Network Peers
    participant Blockchain as Blockchain
    participant DB as Local Database
    
    Note over Node: 1. Encounters ReddID without local profile data
    
    Node->>+Peers: 2. Send MSG_REDDID_PROFILE_REQUEST
    
    loop For peers with profile
        Peers-->>-Node: 3. Respond with MSG_REDDID_PROFILE_RESPONSE
    end
    
    Node->>+Blockchain: 4. Validate profile
    Note over Node,Blockchain: Check against on-chain hash
    Blockchain-->>-Node: Validation result
    
    alt Profile valid
        Node->>+DB: 5. Store profile
        DB-->>-Node: Storage confirmation
    else Profile invalid
        Node->>Node: Discard invalid profile
        Note over Node: May blacklist peer if malicious
    end
Loading

6.4.3 Reputation Data Propagation

Reputation updates are propagated through the network:

  1. Node calculates a new reputation score for a ReddID
  2. Node broadcasts MSG_REDDID_REPUTATION_UPDATE with the new score
  3. Receiving nodes validate the calculation
  4. If valid, nodes update their local database
  5. Nodes may add their signature to the calculation proof
sequenceDiagram
    participant CalcNode as Calculating Node
    participant Network as Network Nodes
    participant Validator as Validation Process
    participant DB as Local Database
    
    CalcNode->>CalcNode: 1. Calculate new reputation score
    Note over CalcNode: For a specific ReddID
    
    CalcNode->>+Network: 2. Broadcast MSG_REDDID_REPUTATION_UPDATE
    Note over CalcNode,Network: Include new score and calculation proof
    
    loop For each receiving node
        Network->>+Validator: 3. Validate calculation
        Validator-->>-Network: Validation result
        
        alt Calculation is valid
            Network->>+DB: 4. Update local database
            DB-->>-Network: Update confirmation
            
            Network->>Network: 5. Add signature to calculation proof
            Note over Network: Optional step
        else Calculation is invalid
            Network->>Network: Discard invalid update
            Note over Network: May blacklist node if malicious
        end
    end
    
    Network-->>-CalcNode: Propagation acknowledgment
Loading

6.5 Subscription Mechanism

To optimize network traffic, nodes can subscribe to specific types of updates:

6.5.1 Namespace Subscriptions

Nodes can subscribe to updates for specific namespaces:

bool ReddIDP2PManager::AddNamespaceSubscription(const std::string& namespaceId, CNode* pnode) {
    if (pnode) {
        m_namespaceSubscriptions[namespaceId].insert(pnode->GetId());
        LogPrint(BCLog::REDDID, "Added namespace subscription for %s from node %d\n", 
                namespaceId, pnode->GetId());
        return true;
    }
    return false;
}

When sending namespace-related messages, the system prioritizes nodes with relevant subscriptions:

bool ReddIDP2PManager::SendUserIDAuctionAnnounce(const AuctionInfo& auction) {
    // Create message payload
    CDataStream msg(SER_NETWORK, PROTOCOL_VERSION);
    msg << auction.auctionId << auction.name << auction.namespaceId
        << auction.creator << auction.startTime << auction.endTime
        << auction.reservePrice << auction.type;
    
    // Send to subscribed nodes first
    bool sent = false;
    auto it = m_namespaceSubscriptions.find(auction.namespaceId);
    if (it != m_namespaceSubscriptions.end()) {
        for (NodeId nodeId : it->second) {
            CNode* pnode = g_connman->FindNode(nodeId);
            if (pnode) {
                g_connman->PushMessage(pnode, CNetMsgMaker(PROTOCOL_VERSION)
                                    .Make(NetMsgType::REDDID, "uidauc", msg));
                sent = true;
            }
        }
    }
    
    // Then broadcast to a subset of other nodes
    g_connman->ForEachNode([&](CNode* pnode) {
        // Only send to a subset of nodes to avoid flooding
        if (pnode->nVersion >= MIN_REDDID_PROTO_VERSION && GetRand(4) == 0) {
            g_connman->PushMessage(pnode, CNetMsgMaker(PROTOCOL_VERSION)
                                .Make(NetMsgType::REDDID, "uidauc", msg));
            sent = true;
        }
    });
    
    return sent;
}

6.5.2 ReddID Subscriptions

Similarly, nodes can subscribe to updates for specific ReddIDs:

bool ReddIDP2PManager::AddReddIDSubscription(const std::string& reddId, CNode* pnode) {
    if (pnode) {
        m_reddIDSubscriptions[reddId].insert(pnode->GetId());
        LogPrint(BCLog::REDDID, "Added ReddID subscription for %s from node %d\n", 
                reddId, pnode->GetId());
        return true;
    }
    return false;
}

6.6 Bandwidth Optimization

To minimize network overhead, the protocol implements several bandwidth optimizations:

  1. Compact Formats: Using binary serialization rather than JSON
  2. Differential Updates: Sending only changed profile fields
  3. Subscription Filtering: Selective message propagation
  4. Progressive Resolution: Requesting additional data only when needed
  5. Caching: Local storage of frequently accessed data

7. API Interfaces

The ReddID system provides comprehensive API access through RPC commands, allowing integration with wallets and third-party applications.

7.1 RPC Command Categories

7.1.1 Namespace Commands

Command Description
getnamespacelist List all registered namespaces
getnamespaceinfo Get detailed information about a namespace
getnamespaceauctionlist List all namespace auctions
getnamespaceauctioninfo Get detailed information about a namespace auction
createnamespacesauction Create a namespace auction
bidonnamespacesauction Place a bid on a namespace auction
finalizenamespacesauction Finalize a namespace auction
cancelnamespacesauction Cancel a namespace auction
configurenamespaces Update namespace configuration
renewnamespace Renew a namespace
transfernamespace Transfer namespace ownership

7.1.2 User ID Commands

Command Description
getuseridlist List user IDs in a namespace
getuseridinfo Get detailed information about a user ID
getuserauctionlist List all user ID auctions
getuserauctioninfo Get detailed information about a user ID auction
createuseridauction Create a user ID auction
bidonuseridauction Place a bid on a user ID auction
finalizeuseridauction Finalize a user ID auction
canceluseridauction Cancel a user ID auction
renewuserid Renew a user ID
transferuserid Transfer user ID ownership

7.1.3 ReddID Profile Commands

Command Description
registerreddid Register a new ReddID
getreddidprofile Get profile information for a ReddID
updatereddidprofile Update a ReddID profile
renewreddid Renew a ReddID registration
deactivatereddid Deactivate a ReddID

7.1.4 Social Connection Commands

Command Description
getuserconnections Get social connections for a ReddID
createuserconnection Create a new social connection
updateuserconnection Update an existing social connection
removeuserconnection Remove a social connection

7.1.5 Reputation Commands

Command Description
getuserreputation Get reputation for a ReddID
calculateuserreputation Calculate or recalculate reputation
getuserreputationhistory Get reputation history for a ReddID

7.2 RPC Command Implementation

Each RPC command is implemented as a standalone function that interacts with the ReddIDManager and its components:

static UniValue getnamespacelist(const JSONRPCRequest& request)
{
    RPCTypeCheck(request.params, {});

    NodeContext& node = EnsureAnyNodeContext(request.context);
    if (!node.reddid) {
        throw JSONRPCError(RPC_INTERNAL_ERROR, "ReddID manager not initialized");
    }

    ReddIDManager* reddIDManager = node.reddid.get();
    NamespaceManager* namespaceManager = reddIDManager->GetNamespaceManager();

    if (!namespaceManager) {
        throw JSONRPCError(RPC_INTERNAL_ERROR, "Namespace manager not initialized");
    }

    std::vector<NamespaceInfo> namespaces = namespaceManager->GetNamespaces();

    UniValue result(UniValue::VARR);

    for (const auto& ns : namespaces) {
        UniValue obj(UniValue::VOBJ);
        obj.pushKV("id", ns.id);
        obj.pushKV("owner", EncodeDestination(PKHash(ns.owner)));
        obj.pushKV("allow_numbers", ns.allowNumbers);
        obj.pushKV("allow_hyphens", ns.allowHyphens);
        obj.pushKV("allow_underscores", ns.allowUnderscores);
        obj.pushKV("min_length", ns.minLength);
        obj.pushKV("max_length", ns.maxLength);
        obj.pushKV("renewal_period", ns.renewalPeriod);
        obj.pushKV("grace_period", ns.gracePeriod);
        obj.pushKV("namespace_revenue_pct", ns.namespaceRevenuePct);
        obj.pushKV("burn_pct", ns.burnPct);
        obj.pushKV("node_pct", ns.nodePct);
        obj.pushKV("dev_pct", ns.devPct);
        obj.pushKV("min_auction_duration", ns.minAuctionDuration);
        obj.pushKV("max_auction_duration", ns.maxAuctionDuration);
        obj.pushKV("min_bid_increment", ns.minBidIncrement);
        obj.pushKV("last_updated", (int64_t)ns.lastUpdated);
        obj.pushKV("expiration", (int64_t)ns.expiration);

        result.push_back(obj);
    }

    return result;
}

7.3 RPC Command Examples

7.3.1 Creating a Namespace Auction

> reddcoin-cli createnamespacesauction "crypto" 50000 14 0
{
  "auction_id": "abcd1234efgh5678ijkl9012mnop3456",
  "namespace_id": "crypto",
  "start_time": 1617271200,
  "end_time": 1618480800,
  "reserve_price": 50000.00000000,
  "auction_type": 0,
  "creator_address": "rBtXp51yUQS7WqBXuFSyoZp9gXtJcnMcbN"
}

7.3.2 Bidding on a User ID Auction

> reddcoin-cli bidonuseridauction "abcd1234efgh5678ijkl9012mnop3456" 75000
{
  "bid_id": "90ab12cd34ef56gh78ij90kl12mn34op",
  "auction_id": "abcd1234efgh5678ijkl9012mnop3456",
  "bid_amount": 75000.00000000,
  "deposit_amount": 7500.00000000,
  "bid_time": 1617352800,
  "bidder_address": "rUv2CAYkbuKybe8D7EkHelrSgRKNsZ22vs"
}

7.3.3 Getting User Connections

> reddcoin-cli getuserconnections "alice" null "both"
{
  "reddid": "alice",
  "outgoing_connections": [
    {
      "to_reddid": "bob",
      "connection_type": 1,
      "type_name": "friend",
      "creation_time": 1617271200,
      "last_interaction": 1617352800,
      "visibility": 0,
      "metadata": "Friend from school"
    },
    {
      "to_reddid": "carol",
      "connection_type": 0,
      "type_name": "follow",
      "creation_time": 1617271500,
      "last_interaction": 1617271500,
      "visibility": 0,
      "metadata": ""
    }
  ],
  "incoming_connections": [
    {
      "from_reddid": "dave",
      "connection_type": 1,
      "type_name": "friend",
      "creation_time": 1617281200,
      "last_interaction": 1617281200,
      "visibility": 0
    }
  ]
}

7.4 WebSocket API

In addition to the RPC interface, the system provides a WebSocket API for real-time updates:

7.4.1 WebSocket Subscriptions

Subscription Description
namespace:<id> Updates for a specific namespace
auction:<id> Updates for a specific auction
reddid:<id> Updates for a specific ReddID profile
auctions:active All active auction updates
auctions:ending Auctions approaching their end time

7.4.2 WebSocket Notification Types

Type Description
auction_created New auction created
bid_placed New bid placed on an auction
auction_finalized Auction has been finalized
profile_updated ReddID profile has been updated
connection_added New social connection created
reputation_updated Reputation score updated

7.5 REST API

The system also provides a REST API for integration with web applications:

7.5.1 REST Endpoints

Endpoint Method Description
/api/namespaces GET List all namespaces
/api/namespaces/{id} GET Get namespace details
/api/auctions/namespaces GET List namespace auctions
/api/auctions/userids GET List user ID auctions
/api/reddid/{id} GET Get ReddID profile
/api/reddid/{id}/connections GET Get ReddID connections
/api/reddid/{id}/reputation GET Get ReddID reputation

8. Security Model

8.1 Key Management

The ReddID system relies on cryptographic key pairs for authentication and authorization:

8.1.1 Resource Ownership

Each resource (namespace, user ID, ReddID) is owned by a public-private key pair:

struct ResourceOwnership {
    CKeyID ownerKeyID;  // Public key hash identifying the owner
    int64_t acquiredTimestamp;  // When ownership was established
    uint256 acquisitionTxid;  // Transaction ID that established ownership
};

All management operations require signing with the corresponding private key:

bool AuthorizeOperation(const CKeyID& ownerKeyID, const std::string& operation, 
                      const std::string& resource, const CKey& key, 
                      std::vector<unsigned char>& signature) {
    std::string message = operation + ":" + resource + ":" + std::to_string(GetTime());
    uint256 messageHash = Hash(message.begin(), message.end());
    
    if (!key.Sign(messageHash, signature)) {
        return false;
    }
    
    CPubKey pubKey = key.GetPubKey();
    CKeyID keyID = pubKey.GetID();
    
    return keyID == ownerKeyID;
}

8.1.2 Key Rotation

The system supports key rotation to allow owners to update their keys:

bool ReddIDManager::RotateResourceKey(const std::string& resource, ResourceType type,
                                  const CKeyID& currentOwner, const CKeyID& newOwner,
                                  const CKey& currentKey) {
    // Authenticate current owner
    std::vector<unsigned char> signature;
    std::string operation = "rotate";
    if (!AuthorizeOperation(currentOwner, operation, resource, currentKey, signature)) {
        return false;
    }
    
    // Update ownership records based on resource type
    switch (type) {
        case RESOURCE_NAMESPACE:
            return m_namespaceManager->UpdateOwner(resource, currentOwner, newOwner);
        case RESOURCE_USERID:
            // Parse resource string to get name and namespace
            std::string name, namespaceId;
            if (!ParseUserIDString(resource, name, namespaceId)) {
                return false;
            }
            return m_namespaceManager->UpdateUserIDOwner(name, namespaceId, 
                                                     currentOwner, newOwner);
        case RESOURCE_REDDID:
            return m_profileManager->UpdateProfileOwner(resource, currentOwner, newOwner);
        default:
            return false;
    }
}

8.2 Authentication

The system uses a multilayered authentication system:

8.2.1 Transaction Authentication

For on-chain operations, authentication is performed through transaction signatures:

  1. The transaction must be signed by the key corresponding to the input addresses
  2. For resource management, the input address must match the resource owner
  3. For auctions, the bidder's address is recorded for future authentication

8.2.2 RPC Authentication

RPC commands use the Reddcoin Core authentication mechanisms:

  1. Username/password authentication for the RPC interface
  2. Authorization verification for wallet operations
  3. Resource ownership verification for management operations

8.2.3 P2P Authentication

P2P messages are authenticated through:

  1. Transaction references for initial operations
  2. Cryptographic signatures for subsequent operations
  3. Challenge-response protocols for sensitive operations

8.3 Access Control

The system implements hierarchical access control:

8.3.1 Resource Hierarchy

  1. System-level privileges: Reserved for Reddcoin Core developers
  2. Namespace owner privileges: Control over namespace configuration
  3. User ID owner privileges: Control over specific user IDs
  4. ReddID owner privileges: Control over ReddID profiles and connections

8.3.2 Permission Structure

Resource Permissions
├── Namespace
│   ├── Configure (owner only)
│   ├── Transfer (owner only)
│   ├── Renew (owner only)
│   └── View (public)
├── User ID
│   ├── Transfer (owner only)
│   ├── Renew (owner only)
│   ├── Link to ReddID (owner only)
│   └── View (public)
└── ReddID
    ├── Update Profile (owner only)
    ├── Manage Connections (owner only)
    ├── View Profile (public or restricted)
    └── View Connections (public or restricted)

8.4 Data Protection

The system implements several data protection mechanisms:

8.4.1 Private Information Protection

Sensitive information can be protected through:

  1. Data hashing (e.g., email hash rather than plaintext)
  2. Encryption for private messages
  3. Visibility controls for social connections
  4. Permissions for profile information access

8.4.2 Encryption

For private messages and sensitive data, the system uses:

  1. Public key cryptography for end-to-end encryption
  2. AES-256 for symmetric encryption
  3. Secure key exchange protocols
bool ReddIDManager::SendEncryptedMessage(const std::string& fromReddId, 
                                     const std::string& toReddId,
                                     const std::string& message,
                                     const CKey& senderKey) {
    // Authenticate sender
    ReddIDProfile sender, recipient;
    if (!m_profileManager->GetProfile(fromReddId, sender) ||
        !m_profileManager->GetProfile(toReddId, recipient)) {
        return false;
    }
    
    if (sender.owner != senderKey.GetPubKey().GetID()) {
        return false; // Not the owner of the sender ReddID
    }
    
    if (recipient.messagingPubkey.empty()) {
        return false; // Recipient does not have a messaging public key
    }
    
    // Encrypt message
    CPubKey recipientKey(recipient.messagingPubkey);
    if (!recipientKey.IsValid()) {
        return false;
    }
    
    // Generate one-time ephemeral key
    CKey ephemeralKey;
    ephemeralKey.MakeNewKey(true);
    
    // ECDH key exchange
    std::vector<unsigned char> sharedSecret;
    if (!ephemeralKey.ECDH(recipientKey, sharedSecret)) {
        return false;
    }
    
    // Derive AES key using HKDF
    std::vector<unsigned char> aesKey = HKDF(sharedSecret);
    
    // Encrypt message with AES
    std::vector<unsigned char> ciphertext;
    AES256Encrypt(aesKey, message, ciphertext);
    
    // Create message package
    MessagePackage pkg;
    pkg.fromReddId = fromReddId;
    pkg.toReddId = toReddId;
    pkg.ephemeralPubKey = ephemeralKey.GetPubKey();
    pkg.ciphertext = ciphertext;
    pkg.timestamp = GetTime();
    
    // Sign package
    uint256 packageHash = pkg.GetHash();
    if (!senderKey.Sign(packageHash, pkg.signature)) {
        return false;
    }
    
    // Store and relay message
    return m_profileManager->StoreMessage(pkg);
}

8.5 Audit and Compliance

The system includes comprehensive audit capabilities:

8.5.1 Audit Logging

All significant operations are logged with:

  1. Operation type and parameters
  2. Timestamp and block height
  3. Authorizing key identifier
  4. Resource identifiers
  5. Transaction references

8.5.2 Verification Processes

The system includes verification mechanisms for legal entities:

  1. Self-Attested Verification: Basic verification with no external proof
  2. Email Verification: Confirmation through email challenges
  3. Community Verification: Peer-based verification mechanisms
  4. Official Verification: Verification for legally registered entities

8.5.3 Dispute Resolution

The system includes mechanisms for resolving disputes:

  1. Trademark Claims: Process for trademark holders to claim identifiers
  2. Identity Disputes: Resolution process for impersonation claims
  3. Operator Intervention: Process for resolving critical issues

8.6 Secure Development Practices

The system is developed following secure coding practices:

  1. Input Validation: All user inputs are validated and sanitized
  2. Error Handling: Comprehensive error handling to prevent information leakage
  3. Memory Safety: Buffer overflow protections and memory management
  4. Cryptographic Standards: Use of well-established cryptographic libraries
  5. Peer Review: Code review and security auditing processes

9. External Dependencies

The ReddID system depends on several external components:

9.1 Reddcoin Core Dependencies

9.1.1 Internal Dependencies

Component Usage
Wallet System Key management, transaction creation
P2P Network Message propagation, peer discovery
Block Validation Transaction validation, OP_RETURN processing
RPC Framework Command interface, authentication
Database Backend Storage foundations

9.1.2 External Libraries

Library Version Purpose
LevelDB 1.22+ Database storage
OpenSSL 1.1.1+ Cryptographic operations
Boost 1.70.0+ Various utilities
libevent 2.1.8+ Networking

9.2 Additional Dependencies

9.2.1 Core Dependencies

Dependency Purpose
IPFS (optional) Decentralized storage for profile images and larger data
SQLite Embedded database for efficient querying
JSON for Modern C++ JSON parsing and generation
Google Protocol Buffers Efficient binary serialization

9.2.2 UI Dependencies

Dependency Purpose
Qt Framework Cross-platform UI toolkit
Bootstrap Web UI styling framework
React UI components for web interface
D3.js Data visualization for auctions and reputation

9.3 Dependency Management

The system uses careful dependency management to minimize security risks:

  1. Version Pinning: Specific versions of dependencies are specified
  2. Dependency Auditing: Regular security audits of dependencies
  3. Minimal Dependencies: Only essential dependencies are included
  4. Vendoring: Critical dependencies are vendored to prevent supply chain attacks
// Example of dependency version checks
bool CheckDependencies() {
    // Check LevelDB version
    int major, minor, patch;
    leveldb::GetLevelDBVersion(&major, &minor, &patch);
    if (major < 1 || (major == 1 && minor < 22)) {
        LogPrintf("ERROR: LevelDB version too old: %d.%d.%d, required: 1.22.0+\n", 
                 major, minor, patch);
        return false;
    }
    
    // Check OpenSSL version
    if (SSLeay() < 0x1010100f) {
        LogPrintf("ERROR: OpenSSL version too old: %s, required: 1.1.1+\n", 
                 SSLeay_version(SSLEAY_VERSION));
        return false;
    }
    
    // Check Boost version
    if (BOOST_VERSION < 107000) {
        LogPrintf("ERROR: Boost version too old: %d, required: 1.70.0+\n", 
                 BOOST_VERSION);
        return false;
    }
    
    return true;
}

10. Performance Considerations

10.1 Database Optimization

The ReddID system implements several database optimizations:

10.1.1 Indexing Strategy

Carefully designed indexes to optimize common query patterns:

  1. Primary Key Indexes: For direct lookups by identifier
  2. Secondary Indexes: For lookups by owner, timestamp, reputation, etc.
  3. Composite Indexes: For complex queries involving multiple conditions
  4. Covering Indexes: For queries that can be satisfied entirely from the index
// Example of index creation in database initialization
bool ReddIDDB::CreateIndexes() {
    // Create indexes for namespaces
    m_db->WriteKey("index:namespaces:owner", std::string());
    m_db->WriteKey("index:namespaces:expiration", std::string());
    
    // Create indexes for user IDs
    m_db->WriteKey("index:userids:owner", std::string());
    m_db->WriteKey("index:userids:namespace", std::string());
    m_db->WriteKey("index:userids:expiration", std::string());
    
    // Create indexes for auctions
    m_db->WriteKey("index:auctions:namespace", std::string());
    m_db->WriteKey("index:auctions:state", std::string());
    m_db->WriteKey("index:auctions:end_time", std::string());
    
    // Create indexes for bids
    m_db->WriteKey("index:bids:auction", std::string());
    m_db->WriteKey("index:bids:bidder", std::string());
    
    // Create indexes for ReddID profiles
    m_db->WriteKey("index:profiles:owner", std::string());
    m_db->WriteKey("index:profiles:expiration", std::string());
    
    // Create indexes for connections
    m_db->WriteKey("index:connections:from", std::string());
    m_db->WriteKey("index:connections:to", std::string());
    
    // Create indexes for reputation
    m_db->WriteKey("index:reputation:score", std::string());
    
    // Create indexes for namespace resolution
    m_db->WriteKey("index:resolution:namespace_user", std::string());
    
    return true;
}

10.1.2 Batch Processing

Database operations are batched where possible to minimize I/O overhead:

bool ReddIDDB::UpdateAuctionAndBids(const AuctionInfo& auction, 
                                  const std::vector<BidInfo>& bids) {
    // Start a database transaction
    BeginTransaction();
    
    bool success = true;
    
    // Update the auction
    if (!WriteAuction(auction)) {
        success = false;
    }
    
    // Update all bids in a batch
    for (const auto& bid : bids) {
        if (!WriteBid(bid)) {
            success = false;
            break;
        }
    }
    
    // Commit or abort the transaction
    if (success) {
        return CommitTransaction();
    } else {
        AbortTransaction();
        return false;
    }
}

10.1.3 Query Optimization

Careful attention to query patterns to minimize database load:

  1. Result Limiting: Pagination for large result sets
  2. Projection: Retrieving only needed fields
  3. Query Rewriting: Restructuring queries for optimal index usage
  4. Materialized Views: Precomputed results for complex queries

10.2 Caching Strategies

The system implements multi-level caching to improve performance:

10.2.1 Memory Cache

Frequently accessed data is cached in memory:

class NamespaceCache {
public:
    NamespaceCache(size_t maxSize = 1000) : m_maxSize(maxSize) {}
    
    bool Get(const std::string& namespaceId, NamespaceInfo& info) {
        auto it = m_cache.find(namespaceId);
        if (it != m_cache.end()) {
            // Check if cached entry is still valid
            if (GetTime() - it->second.cacheTime < NAMESPACE_CACHE_TTL) {
                info = it->second.info;
                return true;
            } else {
                // Expired entry
                m_cache.erase(it);
                return false;
            }
        }
        return false;
    }
    
    void Put(const std::string& namespaceId, const NamespaceInfo& info) {
        // Evict if cache is full
        if (m_cache.size() >= m_maxSize) {
            // Simple LRU: remove oldest entry
            auto oldest = std::min_element(m_cache.begin(), m_cache.end(),
                [](const auto& a, const auto& b) {
                    return a.second.cacheTime < b.second.cacheTime;
                });
            if (oldest != m_cache.end()) {
                m_cache.erase(oldest);
            }
        }
        
        CachedNamespace cached;
        cached.info = info;
        cached.cacheTime = GetTime();
        m_cache[namespaceId] = cached;
    }
    
    void Invalidate(const std::string& namespaceId) {
        m_cache.erase(namespaceId);
    }
    
    void Clear() {
        m_cache.clear();
    }
    
private:
    struct CachedNamespace {
        NamespaceInfo info;
        int64_t cacheTime;
    };
    
    std::map<std::string, CachedNamespace> m_cache;
    size_t m_maxSize;
    static const int64_t NAMESPACE_CACHE_TTL = 3600; // 1 hour
};

10.2.2 Reputation Cache

Special caching for reputation calculations, which are computationally expensive:

class ReputationCache {
public:
    ReputationCache(size_t maxSize = 500) : m_maxSize(maxSize) {}
    
    bool Get(const std::string& reddId, ReddIDReputation& reputation) {
        auto it = m_cache.find(reddId);
        if (it != m_cache.end()) {
            // Reputation cache has a shorter TTL since it changes more frequently
            if (GetTime() - it->second.cacheTime < REPUTATION_CACHE_TTL) {
                reputation = it->second.reputation;
                return true;
            } else {
                m_cache.erase(it);
                return false;
            }
        }
        return false;
    }
    
    void Put(const std::string& reddId, const ReddIDReputation& reputation) {
        // Eviction policy based on LRU and reputation score
        if (m_cache.size() >= m_maxSize) {
            // Prefer to keep high-reputation entries in cache
            auto evict = std::min_element(m_cache.begin(), m_cache.end(),
                [](const auto& a, const auto& b) {
                    // Score function combining age and reputation
                    double a_score = a.second.reputation.overallScore * 
                                   (GetTime() - a.second.cacheTime);
                    double b_score = b.second.reputation.overallScore * 
                                   (GetTime() - b.second.cacheTime);
                    return a_score < b_score;
                });
            if (evict != m_cache.end()) {
                m_cache.erase(evict);
            }
        }
        
        CachedReputation cached;
        cached.reputation = reputation;
        cached.cacheTime = GetTime();
        m_cache[reddId] = cached;
    }
    
    void Invalidate(const std::string& reddId) {
        m_cache.erase(reddId);
    }
    
private:
    struct CachedReputation {
        ReddIDReputation reputation;
        int64_t cacheTime;
    };
    
    std::map<std::string, CachedReputation> m_cache;
    size_t m_maxSize;
    static const int64_t REPUTATION_CACHE_TTL = 900; // 15 minutes
};

10.2.3 P2P Data Caching

Caching of data distributed through the P2P network:

  1. Namespace Configurations: Cached locally to avoid repeated requests
  2. Profile Data: Frequently accessed profiles cached with TTL-based expiration
  3. Connection Graphs: Caching of social connection data for efficient traversal
  4. Auction Data: Caching of active auctions for real-time bidding

10.3 Network Optimization

The system implements several network optimizations:

10.3.1 Message Prioritization

Messages are prioritized based on time sensitivity:

enum MessagePriority {
    PRIORITY_LOW = 0,    // Background synchronization, non-urgent updates
    PRIORITY_MEDIUM = 1, // Normal updates, profile changes
    PRIORITY_HIGH = 2    // Time-sensitive data like auction bids or finalization
};

// When sending messages, priority affects relay behavior
bool ReddIDP2PManager::RelayMessage(CNode* pfrom, const std::string& command, 
                                 CDataStream& vMsg, MessagePriority priority) {
    int relayChance;
    switch (priority) {
        case PRIORITY_LOW:
            relayChance = 25; // 25% chance to relay to each peer
            break;
        case PRIORITY_MEDIUM:
            relayChance = 50; // 50% chance to relay to each peer
            break;
        case PRIORITY_HIGH:
            relayChance = 100; // Always relay to all peers
            break;
        default:
            relayChance = 25;
    }
    
    // Find nodes to relay to
    std::vector<CNode*> vNodesCopy;
    g_connman->ForEachNode([&vNodesCopy, pfrom, relayChance](CNode* pnode) {
        if (pnode->nVersion >= MIN_REDDID_PROTO_VERSION && pnode != pfrom &&
            (relayChance == 100 || GetRand(100) < relayChance)) {
            vNodesCopy.push_back(pnode);
        }
    });
    
    // Relay the message
    for (auto* pnode : vNodesCopy) {
        g_connman->PushMessage(pnode, CNetMsgMaker(PROTOCOL_VERSION).Make(command, vMsg));
    }
    
    return !vNodesCopy.empty();
}

10.3.2 Connection Management

Efficient connection management to optimize network resources:

  1. Connection Prioritization: Prioritize connections to nodes with relevant subscriptions
  2. Connection Limitation: Limit the number of connections to prevent resource exhaustion
  3. Bandwidth Management: Control message flow to prevent network congestion

10.3.3 Data Compression

Compression used for larger data transfers:

bool ReddIDP2PManager::SendProfileData(const std::string& reddId, CNode* pnode) {
    ReddIDProfile profile;
    if (!m_reddIDManager->GetProfileManager()->GetProfile(reddId, profile)) {
        return false;
    }
    
    // Serialize the profile
    CDataStream data(SER_NETWORK, PROTOCOL_VERSION);
    data << profile;
    
    // Check if compression is beneficial
    if (data.size() > COMPRESSION_THRESHOLD) {
        // Compress data
        std::vector<unsigned char> compressed;
        if (CompressData(data, compressed) && compressed.size() < data.size()) {
            // Send compressed data
            g_connman->PushMessage(pnode, CNetMsgMaker(PROTOCOL_VERSION)
                                .Make(NetMsgType::REDDID, "ridres_z", compressed));
            return true;
        }
    }
    
    // Send uncompressed data
    g_connman->PushMessage(pnode, CNetMsgMaker(PROTOCOL_VERSION)
                        .Make(NetMsgType::REDDID, "ridres", data));
    return true;
}

bool CompressData(const CDataStream& input, std::vector<unsigned char>& output) {
    output.clear();
    
    z_stream strm;
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    
    // Initialize deflate
    if (deflateInit(&strm, Z_DEFAULT_COMPRESSION) != Z_OK) {
        return false;
    }
    
    // Set input
    strm.avail_in = input.size();
    strm.next_in = (Bytef*)input.data();
    
    // Prepare output buffer
    output.resize(deflateBound(&strm, input.size()));
    strm.avail_out = output.size();
    strm.next_out = output.data();
    
    // Compress
    int ret = deflate(&strm, Z_FINISH);
    deflateEnd(&strm);
    
    if (ret != Z_STREAM_END) {
        output.clear();
        return false;
    }
    
    // Resize output to actual compressed size
    output.resize(output.size() - strm.avail_out);
    return true;
}

10.4 Computational Optimizations

The system implements several computational optimizations:

10.4.1 Reputation Calculation

Reputation calculations are optimized to minimize computational overhead:

  1. Incremental Updates: Reputation is updated incrementally rather than recalculated
  2. Scheduled Recalculation: Full recalculation performed at scheduled intervals
  3. Tiered Calculation: Different components calculated at different frequencies
  4. Parallelization: Reputation calculations parallelized where possible
bool ProfileManager::UpdateReputation(const std::string& reddId, 
                                    ReputationUpdateType updateType,
                                    double updateValue) {
    ReddIDReputation reputation;
    if (!GetReputation(reddId, reputation)) {
        // Create default reputation if not exists
        reputation.reddId = reddId;
        reputation.overallScore = 50.0;
        reputation.longevityScore = 0.0;
        reputation.transactionScore = 0.0;
        reputation.engagementScore = 0.0;
        reputation.verificationScore = 0.0;
        reputation.auctionScore = 50.0;
        reputation.lastCalculated = GetTime();
    }
    
    // Update specific component based on update type
    switch (updateType) {
        case UPDATE_TRANSACTION:
            reputation.transactionScore = 
                (reputation.transactionScore * 0.9) + (updateValue * 0.1);
            break;
        case UPDATE_ENGAGEMENT:
            reputation.engagementScore = 
                (reputation.engagementScore * 0.8) + (updateValue * 0.2);
            break;
        case UPDATE_VERIFICATION:
            reputation.verificationScore = updateValue;
            break;
        case UPDATE_AUCTION:
            reputation.auctionScore = 
                (reputation.auctionScore * 0.7) + (updateValue * 0.3);
            break;
        default:
            return false;
    }
    
    // Recalculate overall score
    const double weights[5] = {0.2, 0.25, 0.2, 0.15, 0.2}; // Component weights
    reputation.overallScore = 
        (reputation.longevityScore * weights[0]) +
        (reputation.transactionScore * weights[1]) +
        (reputation.engagementScore * weights[2]) +
        (reputation.verificationScore * weights[3]) +
        (reputation.auctionScore * weights[4]);
    
    // Clamp to valid range
    reputation.overallScore = std::max(0.0, std::min(100.0, reputation.overallScore));
    
    // Update timestamp
    reputation.lastCalculated = GetTime();
    
    // Save updated reputation
    return m_reddIDManager->GetReddIDDB()->WriteReputation(reputation);
}

10.4.2 Auction Processing

Auction processing is optimized to handle high transaction volumes:

  1. Batch Processing: Bids processed in batches
  2. Priority Queuing: Higher-value auctions processed with priority
  3. Staged Settlement: Auctions settled in stages to distribute load
  4. Timelock Management: Efficient handling of time-dependent operations

10.4.3 Social Graph Traversal

Social graph operations are optimized for efficient traversal:

  1. Graph Caching: Frequently traversed paths cached
  2. Partial Loading: Load only needed portions of the social graph
  3. Materialized Paths: Precomputed paths for common traversals
  4. Connection Indexing: Specialized indexes for social graph queries

10.5 Scalability Considerations

The system addresses several scalability considerations:

10.5.1 Sharding Strategy

For larger deployments, data can be sharded based on:

  1. Namespace Sharding: Data partitioned by namespace
  2. User ID Sharding: User IDs sharded based on hash
  3. ReddID Sharding: ReddID profiles sharded based on identifier
  4. Time-Based Sharding: Historical data moved to separate storage

10.5.2 Load Distribution

Computational load is distributed based on:

  1. Node Specialization: Nodes can specialize in different functions
  2. Workload Partitioning: Divide work based on resource availability
  3. Task Prioritization: Critical tasks prioritized over background tasks
  4. Adaptive Scaling: Resource allocation adjusted based on workload

11. Deployment Requirements

11.1 Hardware Requirements

The ReddID system has the following hardware requirements:

11.1.1 Minimum Requirements

Component Minimum Requirement
CPU 2 cores, 2.0 GHz
RAM 4 GB
Storage 50 GB SSD
Network 5 Mbps broadband connection

11.1.2 Recommended Requirements

Component Recommended Requirement
CPU 4+ cores, 3.0+ GHz
RAM 8+ GB
Storage 250+ GB SSD
Network 20+ Mbps broadband connection

11.1.3 Scaling Factors

Hardware requirements scale based on:

  1. Transaction Volume: Higher transaction volumes require more CPU and RAM
  2. Network Size: Larger networks require more bandwidth and connections
  3. Data Volume: More namespaces and user IDs require more storage
  4. Query Load: Higher query volumes require more CPU and RAM

11.2 Software Requirements

The ReddID system has the following software requirements:

11.2.1 Operating System

OS Version
Linux Ubuntu 20.04+, Debian 10+, CentOS 8+
Windows Windows 10, Windows Server 2019+
macOS 10.14 (Mojave)+

11.2.2 Required Software

Software Version Purpose
Reddcoin Core 4.0.0+ Base platform
GCC/Clang 9.0+/10.0+ Compilation
OpenSSL 1.1.1+ Cryptography
Boost 1.70.0+ Utilities
CMake 3.16+ Build system
Git 2.25+ Source control

11.2.3 Optional Software

Software Version Purpose
IPFS 0.8.0+ Decentralized storage
Qt 5.12+ GUI development
Docker 19.03+ Containerization
Kubernetes 1.18+ Orchestration

11.3 Network Requirements

The ReddID system has the following network requirements:

11.3.1 Connectivity

Requirement Details
Inbound Connections Port 45444 open for incoming P2P connections
Outbound Connections Outbound Internet access on port 45444
RPC Access Port 45443 for local or secured remote access
WebSocket Port 45445 for WebSocket API (optional)
REST API Port 45446 for REST API (optional)

11.3.2 Bandwidth

Usage Pattern Inbound Outbound
Light Node 1-2 GB/day 500 MB-1 GB/day
Full Node 2-3 GB/day 2-3 GB/day
Service Node 5-10 GB/day 5-10 GB/day

11.3.3 Network Configuration

Recommended network configuration includes:

  1. Firewall Rules: Allow required ports while blocking unnecessary traffic
  2. DDoS Protection: Implement rate limiting and flood protection
  3. Connection Limits: Configure appropriate connection limits based on resources
  4. Traffic Prioritization: Prioritize critical traffic over less important messages

11.4 Installation Process

The installation process consists of the following steps:

11.4.1 Basic Installation

# Clone the repository
git clone https://github.com/reddcoin-project/reddcoin-core.git

# Move to the directory
cd reddcoin-core

# Checkout the appropriate branch
git checkout reddid-integration

# Build the software
./autogen.sh
./configure --with-gui=qt5 --enable-reddid
make -j4

# Install (optional)
sudo make install

11.4.2 Configuration

Basic configuration through reddcoin.conf:

# ReddID Configuration
reddid=1
reddidindex=1
reddidcache=100
reddidrpc=1
reddidsubscriptions=1

# Network Configuration
listen=1
server=1
rpcuser=username
rpcpassword=password

# P2P Configuration
maxconnections=125
maxuploadtarget=5000

11.4.3 Initialization

# Initialize the ReddID system (first run)
reddcoind -daemon -reddid -reddidindex -reindex

# Check status
reddcoin-cli reddid-status

11.5 Maintenance Requirements

Ongoing maintenance requirements include:

11.5.1 Backup Requirements

Regular backups of:

  1. Wallet Data: Private keys and transaction data
  2. ReddID Database: Identity and auction data
  3. Configuration: System configuration files
  4. Logs: System logs for audit and troubleshooting
# Backup script example
#!/bin/bash
DATE=$(date +%Y%m%d)
BACKUP_DIR="/backups/reddid/$DATE"

# Create backup directory
mkdir -p $BACKUP_DIR

# Stop the daemon
reddcoin-cli stop

# Wait for shutdown
sleep 10

# Backup wallet
cp -r ~/.reddcoin/wallet.dat $BACKUP_DIR/

# Backup ReddID database
cp -r ~/.reddcoin/reddid/ $BACKUP_DIR/

# Backup configuration
cp ~/.reddcoin/reddcoin.conf $BACKUP_DIR/

# Backup logs
cp ~/.reddcoin/debug.log $BACKUP_DIR/

# Restart the daemon
reddcoind -daemon

11.5.2 Monitoring Requirements

Regular monitoring of:

  1. System Resources: CPU, RAM, disk space
  2. Network Activity: Connection count, bandwidth usage
  3. Transaction Volume: Auction activity, bid volume
  4. Error Rates: Failed operations, connection failures
  5. Response Times: RPC latency, P2P message propagation

11.5.3 Update Process

Software updates follow this process:

  1. Update Announcement: Notification of upcoming updates
  2. Release Testing: Testing on testnet before mainnet deployment
  3. Staged Rollout: Gradual rollout to minimize disruption
  4. Verification: Validate system integrity after update
  5. Rollback Plan: Procedure for reverting updates if necessary

12. Implementation Guidelines

12.1 Coding Standards

The ReddID system follows these coding standards:

12.1.1 Style Guidelines

  1. Naming Conventions:

    • Classes: PascalCase
    • Functions: CamelCase
    • Variables: camelCase
    • Constants: UPPER_CASE
    • Member variables: m_camelCase

  2. Formatting:

    • Indentation: 4 spaces (no tabs)
    • Line width: Maximum 100 characters
    • Braces: Opening brace on same line, closing brace on new line
    • Comments: Above code or at end of line, not exceeding line width

  3. Documentation:

    • All public functions and classes documented
    • Parameter descriptions for all public functions
    • Implementation notes for complex algorithms
    • Example usage for key functionality

12.1.2 Error Handling

Consistent error handling approach:

bool NamespaceManager::UpdateNamespace(const NamespaceInfo& namespaceInfo) {
    // Validate parameters
    if (namespaceInfo.id.empty()) {
        LogPrintf("ERROR: NamespaceManager::UpdateNamespace: Empty namespace ID\n");
        return false;
    }
    
    // Check authorization
    NamespaceInfo existing;
    if (!GetNamespaceInfo(namespaceInfo.id, existing)) {
        LogPrintf("ERROR: NamespaceManager::UpdateNamespace: Namespace not found: %s\n", 
                 namespaceInfo.id);
        return false;
    }
    
    if (existing.owner != namespaceInfo.owner) {
        LogPrintf("ERROR: NamespaceManager::UpdateNamespace: Not authorized to update namespace: %s\n", 
                 namespaceInfo.id);
        return false;
    }
    
    // Validate configuration
    if (!ValidateNamespaceConfiguration(namespaceInfo)) {
        LogPrintf("ERROR: NamespaceManager::UpdateNamespace: Invalid configuration for namespace: %s\n", 
                 namespaceInfo.id);
        return false;
    }
    
    // Perform update
    try {
        if (!m_reddIDManager->GetReddIDDB()->WriteNamespace(namespaceInfo)) {
            LogPrintf("ERROR: NamespaceManager::UpdateNamespace: Database write failed for namespace: %s\n", 
                     namespaceInfo.id);
            return false;
        }
    } catch (const std::exception& e) {
        LogPrintf("ERROR: NamespaceManager::UpdateNamespace: Exception: %s\n", e.what());
        return false;
    }
    
    LogPrint(BCLog::REDDID, "Updated namespace: %s\n", namespaceInfo.id);
    return true;
}

12.1.3 Testing Approach

Comprehensive testing strategy:

  1. Unit Tests: For individual components and functions
  2. Integration Tests: For component interactions
  3. System Tests: For end-to-end functionality
  4. Stress Tests: For performance under load
  5. Security Tests: For vulnerability assessment

Example test case:

BOOST_AUTO_TEST_CASE(namespace_validation_test)
{
    // Initialize test environment
    SetupTestEnvironment();
    
    // Create namespace manager with mock dependencies
    MockReddIDManager mockManager;
    NamespaceManager namespaceManager(&mockManager);
    
    // Test valid namespace ID
    BOOST_CHECK(namespaceManager.ValidateNamespaceID("valid"));
    BOOST_CHECK(namespaceManager.ValidateNamespaceID("valid123"));
    BOOST_CHECK(namespaceManager.ValidateNamespaceID("v-a-l-i-d"));
    
    // Test invalid namespace ID
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID(""));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("INVALID"));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("invalid!"));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("-invalid"));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("invalid-"));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("inva--lid"));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("toolongnamespaceidentifier"));
    
    // Test valid namespace configuration
    NamespaceInfo validConfig;
    validConfig.id = "valid";
    validConfig.allowNumbers = true;
    validConfig.allowHyphens = true;
    validConfig.allowUnderscores = false;
    validConfig.minLength = 3;
    validConfig.maxLength = 32;
    validConfig.renewalPeriod = 365;
    validConfig.gracePeriod = 30;
    validConfig.namespaceRevenuePct = 10;
    validConfig.burnPct = 70;
    validConfig.nodePct = 15;
    validConfig.devPct = 5;
    validConfig.minAuctionDuration = 3;
        validConfig.maxAuctionDuration = 7;
    validConfig.minBidIncrement = 5.0;
    
    BOOST_CHECK(namespaceManager.ValidateNamespaceConfiguration(validConfig));
    
    // Test invalid namespace configuration
    NamespaceInfo invalidConfig = validConfig;
    invalidConfig.minLength = 0;  // Invalid: too small
    BOOST_CHECK(!namespaceManager.ValidateNamespaceConfiguration(invalidConfig));
    
    invalidConfig = validConfig;
    invalidConfig.maxLength = 128;  // Invalid: too large
    BOOST_CHECK(!namespaceManager.ValidateNamespaceConfiguration(invalidConfig));
    
    invalidConfig = validConfig;
    invalidConfig.maxLength = 2;  // Invalid: max < min
    BOOST_CHECK(!namespaceManager.ValidateNamespaceConfiguration(invalidConfig));
    
    invalidConfig = validConfig;
    invalidConfig.namespaceRevenuePct = 20;  // Invalid: exceeds limit
    BOOST_CHECK(!namespaceManager.ValidateNamespaceConfiguration(invalidConfig));
    
    invalidConfig = validConfig;
    // Invalid: percentages don't sum to 100
    invalidConfig.namespaceRevenuePct = 10;
    invalidConfig.burnPct = 80;
    invalidConfig.nodePct = 15;
    invalidConfig.devPct = 5;
    BOOST_CHECK(!namespaceManager.ValidateNamespaceConfiguration(invalidConfig));
}

12.2 Component Implementation Guidelines

Guidelines for implementing specific components:

12.2.1 ReddIDManager Implementation

// ReddIDManager.cpp

#include "reddid/reddidmanager.h"
#include "reddid/namespacemanager.h"
#include "reddid/auctionmanager.h"
#include "reddid/profilemanager.h"
#include "reddid/reddiddb.h"
#include "reddid/reddidp2pmanager.h"
#include "validation.h"
#include "script/script.h"
#include "util/system.h"
#include "logging.h"

ReddIDManager::ReddIDManager(const fs::path& dataDir)
    : m_dataDir(dataDir), m_initialized(false)
{
}

bool ReddIDManager::Initialize()
{
    // Prevent multiple initialization
    if (m_initialized) {
        return true;
    }
    
    LogPrint(BCLog::REDDID, "Initializing ReddID manager\n");
    
    try {
        // Initialize database
        m_reddidDB = std::make_unique<ReddIDDB>(m_dataDir);
        if (!m_reddidDB->Initialize()) {
            LogPrintf("ERROR: Failed to initialize ReddID database\n");
            return false;
        }
        
        // Initialize component managers
        m_namespaceManager = std::make_unique<NamespaceManager>(this);
        if (!m_namespaceManager->Initialize()) {
            LogPrintf("ERROR: Failed to initialize namespace manager\n");
            return false;
        }
        
        m_auctionManager = std::make_unique<AuctionManager>(this);
        if (!m_auctionManager->Initialize()) {
            LogPrintf("ERROR: Failed to initialize auction manager\n");
            return false;
        }
        
        m_profileManager = std::make_unique<ProfileManager>(this);
        if (!m_profileManager->Initialize()) {
            LogPrintf("ERROR: Failed to initialize profile manager\n");
            return false;
        }
        
        m_p2pManager = std::make_unique<ReddIDP2PManager>(this);
        if (!m_p2pManager->Initialize()) {
            LogPrintf("ERROR: Failed to initialize P2P manager\n");
            return false;
        }
        
        // Mark as initialized
        m_initialized = true;
        LogPrint(BCLog::REDDID, "ReddID manager initialized successfully\n");
        return true;
    }
    catch (const std::exception& e) {
        LogPrintf("ERROR: Exception during ReddID manager initialization: %s\n", e.what());
        return false;
    }
}

void ReddIDManager::Shutdown()
{
    if (!m_initialized) {
        return;
    }
    
    LogPrint(BCLog::REDDID, "Shutting down ReddID manager\n");
    
    // Shutdown in reverse order of initialization
    if (m_p2pManager) {
        m_p2pManager->Shutdown();
    }
    
    if (m_profileManager) {
        // No specific shutdown needed
    }
    
    if (m_auctionManager) {
        // No specific shutdown needed
    }
    
    if (m_namespaceManager) {
        // No specific shutdown needed
    }
    
    if (m_reddidDB) {
        m_reddidDB->Shutdown();
    }
    
    m_initialized = false;
    LogPrint(BCLog::REDDID, "ReddID manager shutdown complete\n");
}

// Implementation of CreateNamespaceAuction
bool ReddIDManager::CreateNamespaceAuction(const std::string& namespaceId, 
                                        const CKeyID& creator,
                                        CAmount reservePrice, int durationDays,
                                        AuctionType type, uint256& auctionId)
{
    if (!m_initialized || !m_namespaceManager) {
        LogPrintf("ERROR: ReddID manager not initialized\n");
        return false;
    }
    
    return m_namespaceManager->CreateNamespaceAuction(namespaceId, creator, 
                                                   reservePrice, durationDays, 
                                                   type, auctionId);
}

// ... Additional method implementations ...

bool ReddIDManager::ProcessIdTx(const CTransaction& tx, int height)
{
    if (!m_initialized) {
        return false;
    }
    
    // Extract OP_RETURN data if present
    std::vector<unsigned char> data;
    if (!GetOpReturnData(tx, data) || data.size() < 3) {
        return false; // Not a ReddID transaction or invalid format
    }
    
    // Check magic bytes
    if (data[0] != 0xD4 || data[1] != 0xD8) {
        return false; // Invalid network magic
    }
    
    // Process based on operation code
    unsigned char opCode = data[2];
    switch (opCode) {
        case 0x7B: // OP_NAMESPACE_AUCTION_CREATE
            return ProcessNamespaceAuctionCreate(tx, data, height);
        case 0x7D: // OP_NAMESPACE_AUCTION_BID
            return ProcessNamespaceAuctionBid(tx, data, height);
        case 0x5B: // OP_NAMESPACE_AUCTION_FINALIZE
            return ProcessNamespaceAuctionFinalize(tx, data, height);
        // Additional cases for other operations...
        default:
            return false; // Unknown operation code
    }
}

// Helper method to extract OP_RETURN data
bool ReddIDManager::GetOpReturnData(const CTransaction& tx, std::vector<unsigned char>& data)
{
    for (const auto& txout : tx.vout) {
        if (txout.scriptPubKey.IsUnspendable()) {
            CScript::const_iterator pc = txout.scriptPubKey.begin();
            opcodetype opcode;
            if (txout.scriptPubKey.GetOp(pc, opcode) && opcode == OP_RETURN) {
                std::vector<unsigned char> vch;
                if (txout.scriptPubKey.GetOp(pc, opcode, vch)) {
                    data = vch;
                    return true;
                }
            }
        }
    }
    
    return false;
}

12.2.2 NamespaceManager Implementation

// NamespaceManager.cpp

#include "reddid/namespacemanager.h"
#include "reddid/reddidmanager.h"
#include "reddid/reddiddb.h"
#include "validation.h"
#include "util/system.h"
#include "logging.h"
#include <regex>

NamespaceManager::NamespaceManager(ReddIDManager* reddIDManager)
    : m_reddIDManager(reddIDManager)
{
}

bool NamespaceManager::Initialize()
{
    LogPrint(BCLog::REDDID, "Initializing namespace manager\n");
    return true;
}

bool NamespaceManager::ValidateNamespaceID(const std::string& namespaceId)
{
    // Check length (1-15 characters)
    if (namespaceId.empty() || namespaceId.length() > 15) {
        return false;
    }
    
    // Check for valid characters (lowercase letters, numbers, hyphens)
    std::regex pattern("^[a-z0-9][a-z0-9-]*[a-z0-9]$|^[a-z0-9]$");
    if (!std::regex_match(namespaceId, pattern)) {
        return false;
    }
    
    // Check for consecutive hyphens
    if (namespaceId.find("--") != std::string::npos) {
        return false;
    }
    
    return true;
}

bool NamespaceManager::IsNamespaceAvailable(const std::string& namespaceId)
{
    if (!ValidateNamespaceID(namespaceId)) {
        return false;
    }
    
    // Check if namespace exists
    ReddIDDB* db = m_reddIDManager->GetReddIDDB();
    if (!db) {
        return false;
    }
    
    NamespaceInfo info;
    if (db->ReadNamespace(namespaceId, info)) {
        // Namespace exists, check if it's expired
        if (info.expiration > GetTime()) {
            return false; // Not expired, not available
        }
        
        // Check if it's in grace period
        if (info.expiration + (info.gracePeriod * 86400) > GetTime()) {
            return false; // In grace period, not available
        }
        
        // Expired and past grace period, available
        return true;
    }
    
    // Namespace doesn't exist, available
    return true;
}

bool NamespaceManager::CreateNamespaceAuction(const std::string& namespaceId, 
                                           const CKeyID& creator,
                                           CAmount reservePrice, int durationDays,
                                           AuctionType type, uint256& auctionId)
{
    // Validate parameters
    if (!ValidateNamespaceID(namespaceId)) {
        LogPrintf("ERROR: Invalid namespace ID format: %s\n", namespaceId);
        return false;
    }
    
    if (!IsNamespaceAvailable(namespaceId)) {
        LogPrintf("ERROR: Namespace not available: %s\n", namespaceId);
        return false;
    }
    
    if (durationDays < 14 || durationDays > 30) {
        LogPrintf("ERROR: Invalid auction duration: %d days (must be 14-30)\n", durationDays);
        return false;
    }
    
    CAmount minPrice = CalculateMinPrice(namespaceId);
    if (reservePrice < minPrice) {
        LogPrintf("ERROR: Reserve price too low: %s (minimum: %s)\n", 
                 FormatMoney(reservePrice), FormatMoney(minPrice));
        return false;
    }
    
    // Get auction manager
    AuctionManager* auctionManager = m_reddIDManager->GetAuctionManager();
    if (!auctionManager) {
        LogPrintf("ERROR: Auction manager not available\n");
        return false;
    }
    
    // Create auction
    AuctionInfo auction;
    auction.namespaceId = namespaceId;
    auction.name = ""; // Empty for namespace auctions
    auction.creator = creator;
    auction.startTime = GetTime();
    auction.endTime = auction.startTime + (durationDays * 86400);
    auction.reservePrice = reservePrice;
    auction.currentBid = 0;
    auction.currentBidder = CKeyID();
    auction.depositAmount = reservePrice * 0.2; // 20% deposit
    auction.state = AUCTION_PENDING;
    auction.type = type;
    auction.blockHeight = chainActive.Height();
    
    // Generate auction ID
    CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
    ss << auction.namespaceId << auction.creator << auction.startTime << auction.endTime << auction.reservePrice;
    auction.auctionId = Hash(ss.begin(), ss.end());
    auctionId = auction.auctionId;
    
    // Save auction
    ReddIDDB* db = m_reddIDManager->GetReddIDDB();
    if (!db) {
        LogPrintf("ERROR: Database not available\n");
        return false;
    }
    
    if (!db->WriteAuction(auction)) {
        LogPrintf("ERROR: Failed to write auction to database\n");
        return false;
    }
    
    // Announce auction via P2P
    ReddIDP2PManager* p2pManager = m_reddIDManager->GetP2PManager();
    if (p2pManager) {
        p2pManager->SendNamespaceAuctionAnnounce(auction);
    }
    
    LogPrint(BCLog::REDDID, "Created namespace auction: %s, ID: %s\n", namespaceId, auctionId.ToString());
    return true;
}

// ... Additional method implementations ...

CAmount NamespaceManager::CalculateMinPrice(const std::string& namespaceId)
{
    // Base minimum prices by length
    if (namespaceId.length() == 1) {
        return 100000 * COIN; // Single character
    } else if (namespaceId.length() == 2) {
        return 50000 * COIN; // Two characters
    } else if (namespaceId.length() == 3) {
        return 25000 * COIN; // Three characters
    } else {
        return 10000 * COIN; // Four+ characters
    }
}

bool NamespaceManager::GetDefaultNamespaceConfig(NamespaceInfo& config)
{
    config.allowNumbers = true;
    config.allowHyphens = true;
    config.allowUnderscores = true;
    config.minLength = 3;
    config.maxLength = 32;
    config.renewalPeriod = 365;
    config.gracePeriod = 30;
    config.namespaceRevenuePct = 10;
    config.burnPct = 70;
    config.nodePct = 15;
    config.devPct = 5;
    config.minAuctionDuration = 3;
    config.maxAuctionDuration = 7;
    config.minBidIncrement = 5.0;
    
    return true;
}

std::vector<NamespaceInfo> NamespaceManager::GetNamespaces()
{
    std::vector<NamespaceInfo> result;
    ReddIDDB* db = m_reddIDManager->GetReddIDDB();
    if (!db) {
        return result;
    }
    
    std::vector<std::string> namespaceIds;
    if (!db->ListNamespaces(namespaceIds)) {
        return result;
    }
    
    for (const auto& id : namespaceIds) {
        NamespaceInfo info;
        if (db->ReadNamespace(id, info)) {
            result.push_back(info);
        }
    }
    
    return result;
}

12.2.3 Data Structure Definitions

// reddidtypes.h

#ifndef REDDID_TYPES_H
#define REDDID_TYPES_H

#include <string>
#include <vector>
#include <uint256.h>
#include <key.h>
#include <serialize.h>

/**
 * Auction types
 */
enum AuctionType {
    AUCTION_STANDARD = 0,  // Standard auction for most identifiers
    AUCTION_PREMIUM = 1,   // Premium auction for high-value identifiers
    AUCTION_VERIFIED = 2,  // Auction requiring identity verification
    AUCTION_RENEWAL = 3    // Auction for expired identifiers
};

/**
 * Auction states
 */
enum AuctionState {
    AUCTION_PENDING = 0,   // Auction created but not yet active
    AUCTION_ACTIVE = 1,    // Auction open for bidding
    AUCTION_ENDED = 2,     // Auction time elapsed, awaiting finalization
    AUCTION_FINALIZED = 3, // Auction settled to winner
    AUCTION_CANCELED = 4   // Auction canceled by creator (only if no bids)
};

/**
 * Social connection types
 */
enum SocialConnectionType {
    CONNECTION_FOLLOW = 0,   // One-way connection (like Twitter)
    CONNECTION_FRIEND = 1,   // Two-way, mutual connection
    CONNECTION_ENDORSE = 2,  // Reputation-affecting positive connection
    CONNECTION_BLOCK = 3     // Negative connection for filtering
};

/**
 * Privacy levels
 */
enum PrivacyLevel {
    PRIVACY_PUBLIC = 0,      // Visible to anyone
    PRIVACY_FRIENDS = 1,     // Visible to connections only
    PRIVACY_PRIVATE = 2      // Visible to owner only
};

/**
 * Verification levels
 */
enum VerificationLevel {
    VERIFICATION_NONE = 0,       // No verification
    VERIFICATION_SELF = 1,       // Self-attested information
    VERIFICATION_COMMUNITY = 2,  // Peer-verified
    VERIFICATION_OFFICIAL = 3    // Officially verified entity
};

/**
 * Resource types
 */
enum ResourceType {
    RESOURCE_NAMESPACE = 0,
    RESOURCE_USERID = 1,
    RESOURCE_REDDID = 2
};

/**
 * Reputation update types
 */
enum ReputationUpdateType {
    UPDATE_TRANSACTION = 0,
    UPDATE_ENGAGEMENT = 1,
    UPDATE_VERIFICATION = 2,
    UPDATE_AUCTION = 3
};

/**
 * Pricing tier for namespace
 */
struct PricingTier {
    int minLength;
    CAmount minPrice;
    
    ADD_SERIALIZE_METHODS;
    
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(minLength);
        READWRITE(minPrice);
    }
};

/**
 * Namespace information
 */
struct NamespaceInfo {
    std::string id;
    CKeyID owner;
    bool allowNumbers;
    bool allowHyphens;
    bool allowUnderscores;
    int minLength;
    int maxLength;
    int renewalPeriod;
    int gracePeriod;
    int namespaceRevenuePct;
    int burnPct;
    int nodePct;
    int devPct;
    int minAuctionDuration;
    int maxAuctionDuration;
    double minBidIncrement;
    std::vector<unsigned char> configHash;
    int64_t lastUpdated;
    int64_t expiration;
    
    ADD_SERIALIZE_METHODS;
    
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(id);
        READWRITE(owner);
        READWRITE(allowNumbers);
        READWRITE(allowHyphens);
        READWRITE(allowUnderscores);
        READWRITE(minLength);
        READWRITE(maxLength);
        READWRITE(renewalPeriod);
        READWRITE(gracePeriod);
        READWRITE(namespaceRevenuePct);
        READWRITE(burnPct);
        READWRITE(nodePct);
        READWRITE(devPct);
        READWRITE(minAuctionDuration);
        READWRITE(maxAuctionDuration);
        READWRITE(minBidIncrement);
        READWRITE(configHash);
        READWRITE(lastUpdated);
        READWRITE(expiration);
    }
};

/**
 * User ID information
 */
struct UserIDInfo {
    std::string name;
    std::string namespaceId;
    CKeyID owner;
    int64_t registrationTime;
    int64_t expirationTime;
    int64_t lastTransaction;
    int transactionCount;
    std::vector<unsigned char> metadataHash;
    
    ADD_SERIALIZE_METHODS;
    
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(name);
        READWRITE(namespaceId);
        READWRITE(owner);
        READWRITE(registrationTime);
        READWRITE(expirationTime);
        READWRITE(lastTransaction);
        READWRITE(transactionCount);
        READWRITE(metadataHash);
    }
};

/**
 * Auction information
 */
struct AuctionInfo {
    uint256 auctionId;
    std::string name;
    std::string namespaceId;
    CKeyID creator;
    int64_t startTime;
    int64_t endTime;
    CAmount reservePrice;
    CAmount currentBid;
    CKeyID currentBidder;
    CAmount depositAmount;
    AuctionState state;
    AuctionType type;
    std::vector<unsigned char> metadataHash;
    int blockHeight;
    uint256 txid;
    
    ADD_SERIALIZE_METHODS;
    
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(auctionId);
        READWRITE(name);
        READWRITE(namespaceId);
        READWRITE(creator);
        READWRITE(startTime);
        READWRITE(endTime);
        READWRITE(reservePrice);
        READWRITE(currentBid);
        READWRITE(currentBidder);
        READWRITE(depositAmount);
        READWRITE(state);
        READWRITE(type);
        READWRITE(metadataHash);
        READWRITE(blockHeight);
        READWRITE(txid);
    }
};

/**
 * Bid information
 */
struct BidInfo {
    uint256 bidId;
    uint256 auctionId;
    CKeyID bidder;
    std::string bidderReddId;
    CAmount bidAmount;
    CAmount depositAmount;
    int64_t bidTime;
    uint256 txid;
    bool isWinner;
    bool refunded;
    
    ADD_SERIALIZE_METHODS;
    
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(bidId);
        READWRITE(auctionId);
        READWRITE(bidder);
        READWRITE(bidderReddId);
        READWRITE(bidAmount);
        READWRITE(depositAmount);
        READWRITE(bidTime);
        READWRITE(txid);
        READWRITE(isWinner);
        READWRITE(refunded);
    }
};

/**
 * ReddID profile
 */
struct ReddIDProfile {
    std::string reddId;
    CKeyID owner;
    std::string displayName;
    std::vector<unsigned char> avatarHash;
    std::string bio;
    std::vector<unsigned char> emailHash;
    std::string socialData;
    std::vector<unsigned char> messagingPubkey;
    VerificationLevel verificationStatus;
    int64_t creationTime;
    int64_t lastUpdated;
    int64_t expirationTime;
    bool active;
    int flags;
    
    ADD_SERIALIZE_METHODS;
    
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(reddId);
        READWRITE(owner);
        READWRITE(displayName);
        READWRITE(avatarHash);
        READWRITE(bio);
        READWRITE(emailHash);
        READWRITE(socialData);
        READWRITE(messagingPubkey);
        READWRITE(verificationStatus);
        READWRITE(creationTime);
        READWRITE(lastUpdated);
        READWRITE(expirationTime);
        READWRITE(active);
        READWRITE(flags);
    }
};

/**
 * ReddID reputation
 */
struct ReddIDReputation {
    std::string reddId;
    double overallScore;
    double longevityScore;
    double transactionScore;
    double engagementScore;
    double verificationScore;
    double auctionScore;
    int64_t lastCalculated;
    std::vector<unsigned char> calculationProof;
    std::string calculatorSignatures;
    
    ADD_SERIALIZE_METHODS;
    
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(reddId);
        READWRITE(overallScore);
        READWRITE(longevityScore);
        READWRITE(transactionScore);
        READWRITE(engagementScore);
        READWRITE(verificationScore);
        READWRITE(auctionScore);
        READWRITE(lastCalculated);
        READWRITE(calculationProof);
        READWRITE(calculatorSignatures);
    }
};

/**
 * ReddID connection
 */
struct ReddIDConnection {
    std::string fromReddId;
    std::string toReddId;
    SocialConnectionType connectionType;
    int64_t creationTime;
    int64_t lastInteraction;
    int visibility;
    std::string metadata;
    
    ADD_SERIALIZE_METHODS;
    
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(fromReddId);
        READWRITE(toReddId);
        READWRITE(connectionType);
        READWRITE(creationTime);
        READWRITE(lastInteraction);
        READWRITE(visibility);
        READWRITE(metadata);
    }
};

/**
 * ReddID namespace resolution
 */
struct ReddIDNamespaceResolution {
    std::string reddId;
    std::string namespaceId;
    std::string userId;
    bool isPrimary;
    bool autoUpdate;
    int64_t lastSynced;
    
    ADD_SERIALIZE_METHODS;
    
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(reddId);
        READWRITE(namespaceId);
        READWRITE(userId);
        READWRITE(isPrimary);
        READWRITE(autoUpdate);
        READWRITE(lastSynced);
    }
};

#endif // REDDID_TYPES_H

12.3 Key Flow Diagrams

12.3.1 Namespace Registration Flow

    sequenceDiagram
        participant Client
        participant ReddIDManager
        participant NamespaceMgr as NamespaceMgr
        participant AuctionMgr as AuctionMgr
        
        Client->>+ReddIDManager: CreateNamespaceAuction
        
        ReddIDManager->>+NamespaceMgr: CreateNamespaceAuction
        
        NamespaceMgr->>NamespaceMgr: Validate Parameters
        
        NamespaceMgr->>+AuctionMgr: Create Auction
        
        AuctionMgr->>AuctionMgr: Generate Auction
        AuctionMgr->>AuctionMgr: Store Auction
        
        AuctionMgr-->>-NamespaceMgr: Auction Created
        
        NamespaceMgr->>NamespaceMgr: Create TX
        
        NamespaceMgr-->>-ReddIDManager: Creation Complete
        
        ReddIDManager-->>-Client: Return Auction ID
Loading

12.3.2 Auction Bidding Flow

    sequenceDiagram
        participant Client
        participant ReddIDManager
        participant AuctionMgr as AuctionMgr
        participant ReddIDP2PMgr as ReddIDP2PMgr
        
        Client->>+ReddIDManager: Bid on Auction
        
        ReddIDManager->>+AuctionMgr: Place Bid
        
        AuctionMgr->>AuctionMgr: Validate Auction
        AuctionMgr->>AuctionMgr: Check Minimum Bid
        AuctionMgr->>AuctionMgr: Create Bid
        AuctionMgr->>AuctionMgr: Store Bid
        AuctionMgr->>AuctionMgr: Update Auction
        AuctionMgr->>AuctionMgr: Create TX
        
        AuctionMgr->>+ReddIDP2PMgr: Announce Bid
        
        ReddIDP2PMgr->>ReddIDP2PMgr: Relay Bid to Network
        ReddIDP2PMgr-->>-AuctionMgr: Bid Relayed
        
        AuctionMgr-->>-ReddIDManager: Bid Placed
        
        ReddIDManager-->>-Client: Return Bid ID
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12.3.3 ReddID Profile Creation Flow

    sequenceDiagram
        participant Client
        participant ReddIDManager
        participant ProfileMgr as ProfileMgr
        participant ReddIDP2PMgr as ReddIDP2PMgr
        
        Client->>+ReddIDManager: Register ReddID
        
        ReddIDManager->>+ProfileMgr: Register ReddID
        
        ProfileMgr->>ProfileMgr: Validate ReddID Format
        ProfileMgr->>ProfileMgr: Check Availability
        ProfileMgr->>ProfileMgr: Verify Ownership
        ProfileMgr->>ProfileMgr: Create Profile
        ProfileMgr->>ProfileMgr: Store Profile
        ProfileMgr->>ProfileMgr: Create Reputation
        ProfileMgr->>ProfileMgr: Create TX
        
        ProfileMgr->>+ReddIDP2PMgr: Announce Profile
        
        ReddIDP2PMgr->>ReddIDP2PMgr: Relay Profile to Network
        ReddIDP2PMgr-->>-ProfileMgr: Profile Relayed
        
        ProfileMgr-->>-ReddIDManager: Registration Complete
        
        ReddIDManager-->>-Client: Return Profile Info
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12.4 Error Handling Guidelines

To ensure consistent error handling across the codebase, the following guidelines should be followed:

12.4.1 Error Propagation

  1. Methods returning boolean values should return false to indicate failure
  2. Failure reasons should be logged using LogPrintf or LogPrint
  3. Complex operations should include detailed error messages
  4. Functions should validate all inputs before performing operations
bool NamespaceManager::UpdateNamespace(const NamespaceInfo& namespaceInfo) {
    // Validate parameters
    if (namespaceInfo.id.empty()) {
        LogPrintf("ERROR: NamespaceManager::UpdateNamespace: Empty namespace ID\n");
        return false;
    }
    
    // Check authorization
    NamespaceInfo existing;
    if (!GetNamespaceInfo(namespaceInfo.id, existing)) {
        LogPrintf("ERROR: NamespaceManager::UpdateNamespace: Namespace not found: %s\n", 
                 namespaceInfo.id);
        return false;
    }
    
    if (existing.owner != namespaceInfo.owner) {
        LogPrintf("ERROR: NamespaceManager::UpdateNamespace: Not authorized to update namespace: %s\n", 
                 namespaceInfo.id);
        return false;
    }
    
    // ... additional validation and operations ...
    
    return true;
}

12.4.2 Exception Handling

  1. Use try-catch blocks for database operations and external calls
  2. Convert exceptions to simple return values at public API boundaries
  3. Log detailed exception information for debugging
  4. Handle specific exception types appropriately
bool ReddIDDB::WriteNamespace(const NamespaceInfo& namespaceInfo) {
    try {
        // Prepare database key
        std::string key = std::string(1, DB_NAMESPACE) + namespaceInfo.id;
        
        // Write to database
        return m_db->Write(key, namespaceInfo);
    }
    catch (const std::exception& e) {
        LogPrintf("ERROR: Exception in ReddIDDB::WriteNamespace: %s\n", e.what());
        return false;
    }
}

12.4.3 RPC Error Reporting

For RPC commands, use the standardized error reporting mechanism:

static UniValue createnamespacesauction(const JSONRPCRequest& request)
{
    RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VNUM, UniValue::VNUM});
    
    std::string namespaceId = request.params[0].get_str();
    CAmount reservePrice = AmountFromValue(request.params[1]);
    int durationDays = request.params[2].get_int();
    
    NodeContext& node = EnsureAnyNodeContext(request.context);
    if (!node.reddid) {
        throw JSONRPCError(RPC_INTERNAL_ERROR, "ReddID manager not initialized");
    }
    
    // Validate parameters
    if (!node.reddid->GetNamespaceManager()->ValidateNamespaceID(namespaceId)) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid namespace ID format");
    }
    
    if (!node.reddid->GetNamespaceManager()->IsNamespaceAvailable(namespaceId)) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, "Namespace not available");
    }
    
    if (durationDays < 14 || durationDays > 30) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, 
                          strprintf("Invalid auction duration: %d days (must be 14-30)", durationDays));
    }
    
    CAmount minPrice = node.reddid->GetNamespaceManager()->CalculateMinPrice(namespaceId);
    if (reservePrice < minPrice) {
        throw JSONRPCError(RPC_INVALID_PARAMETER,
                          strprintf("Reserve price too low: %s (minimum: %s)",
                                   FormatMoney(reservePrice), FormatMoney(minPrice)));
    }
    
    // ... additional validation and processing ...
    
    return result;
}

12.5 Documentation Guidelines

12.5.1 Code Documentation

  1. All public methods should include documentation comments
  2. Document parameters, return values, and exceptions
  3. Include examples for complex methods
  4. Explain non-obvious behavior and edge cases
/**
 * Create a namespace auction.
 * 
 * This method creates a new auction for a namespace identifier. The auction
 * will run for the specified number of days, with the given reserve price.
 * 
 * @param namespaceId The namespace identifier to auction
 * @param creator The key ID of the auction creator
 * @param reservePrice The minimum acceptable bid (in satoshis)
 * @param durationDays The auction duration (14-30 days)
 * @param type The auction type (AUCTION_STANDARD or AUCTION_PREMIUM)
 * @param auctionId[out] The resulting auction ID
 * 
 * @return true if the auction was created successfully, false otherwise
 * 
 * @throws None, but logs errors for all failure cases
 * 
 * @note The creator must provide a deposit of 20% of the reserve price.
 * @note Premium auctions have longer durations and higher deposits.
 * 
 * Example:
 *   uint256 auctionId;
 *   if (CreateNamespaceAuction("redd", creatorKeyId, 50000 * COIN, 14, 
 *                            AUCTION_STANDARD, auctionId)) {
 *       // Auction created successfully
 *   }
 */
bool NamespaceManager::CreateNamespaceAuction(const std::string& namespaceId, 
                                           const CKeyID& creator,
                                           CAmount reservePrice, int durationDays,
                                           AuctionType type, uint256& auctionId);

12.5.2 High-Level Documentation

  1. Create separate documentation for user-facing functionality
  2. Document system architecture and interactions
  3. Create sequence diagrams for complex processes
  4. Document configuration options and their effects

12.6 Testing Guidelines

12.6.1 Unit Testing

  1. Create tests for individual components
  2. Use mock objects for dependencies
  3. Test both success and failure paths
  4. Include edge cases and boundary conditions
BOOST_AUTO_TEST_CASE(namespace_validation_test)
{
    // Set up mock ReddIDManager
    auto mockManager = std::make_shared<MockReddIDManager>();
    NamespaceManager namespaceManager(mockManager.get());
    
    // Test valid namespace IDs
    BOOST_CHECK(namespaceManager.ValidateNamespaceID("valid"));
    BOOST_CHECK(namespaceManager.ValidateNamespaceID("valid123"));
    BOOST_CHECK(namespaceManager.ValidateNamespaceID("v-a-l-i-d"));
    
    // Test invalid namespace IDs
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID(""));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("INVALID"));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("invalid!"));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("-invalid"));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("invalid-"));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("inva--lid"));
    BOOST_CHECK(!namespaceManager.ValidateNamespaceID("toolongnamespaceidentifier"));
}

12.6.2 Integration Testing

  1. Test interactions between components
  2. Create test fixtures for common setups
  3. Test complete workflows
  4. Verify data persistence across operations
BOOST_FIXTURE_TEST_CASE(namespace_auction_workflow_test, ReddIDTestingSetup)
{
    // Create namespace auction
    uint256 auctionId;
    BOOST_CHECK(m_reddIDManager->CreateNamespaceAuction("test", m_keyIds[0], 
                                                   10000 * COIN, 14, 
                                                   AUCTION_STANDARD, auctionId));
    
    // Get auction info
    AuctionInfo auction;
    BOOST_CHECK(m_reddIDManager->GetAuctionManager()->GetAuctionInfo(auctionId, auction));
    BOOST_CHECK_EQUAL(auction.namespaceId, "test");
    BOOST_CHECK_EQUAL(auction.state, AUCTION_PENDING);
    
    // Place bid
    uint256 bidId;
    BOOST_CHECK(m_reddIDManager->GetAuctionManager()->PlaceBid(auctionId, m_keyIds[1], 
                                                         12000 * COIN, bidId));
    
    // Get updated auction
    BOOST_CHECK(m_reddIDManager->GetAuctionManager()->GetAuctionInfo(auctionId, auction));
    BOOST_CHECK_EQUAL(auction.currentBid, 12000 * COIN);
    BOOST_CHECK_EQUAL(auction.currentBidder, m_keyIds[1]);
    
    // Advance time to auction end
    SetMockTime(auction.endTime + 1);
    
    // Finalize auction
    BOOST_CHECK(m_reddIDManager->FinalizeNamespaceAuction(auctionId));
    
    // Verify namespace creation
    NamespaceInfo namespaceInfo;
    BOOST_CHECK(m_reddIDManager->GetNamespaceManager()->GetNamespaceInfo("test", namespaceInfo));
    BOOST_CHECK_EQUAL(namespaceInfo.owner, m_keyIds[1]);
}

12.6.3 Performance Testing

  1. Test system performance under various loads
  2. Measure transaction throughput and latency
  3. Profile resource usage
  4. Identify bottlenecks and optimization opportunities
BOOST_AUTO_TEST_CASE(auction_performance_test)
{
    // Setup test environment
    SetupTestEnvironment();
    
    // Measure time to create 100 auctions
    auto start = std::chrono::high_resolution_clock::now();
    
    for (int i = 0; i < 100; i++) {
        std::string namespaceId = "test" + std::to_string(i);
        uint256 auctionId;
        BOOST_CHECK(m_reddIDManager->CreateNamespaceAuction(namespaceId, m_keyIds[0], 
                                                       10000 * COIN, 14, 
                                                       AUCTION_STANDARD, auctionId));
    }
    
    auto end = std::chrono::high_resolution_clock::now();
    auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count();
    
    BOOST_TEST_MESSAGE("Time to create 100 auctions: " << duration << "ms");
    BOOST_CHECK(duration < 5000); // Should take less than 5 seconds
    
    // Test database query performance
    start = std::chrono::high_resolution_clock::now();
    
    std::vector<AuctionInfo> auctions = m_reddIDManager->GetAuctionManager()->GetActiveAuctions();
    
    end = std::chrono::high_resolution_clock::now();
    duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count();
    
    BOOST_TEST_MESSAGE("Time to query 100 auctions: " << duration << "ms");
    BOOST_CHECK(duration < 500); // Should take less than 500ms
}

Conclusion

This technical architecture specification provides a comprehensive framework for implementing the ReddID system for Reddcoin. The specification details the core components, their interactions, database schema, blockchain integration, P2P protocol extensions, API interfaces, security model, external dependencies, performance considerations, and deployment requirements.

The system is designed with a focus on modularity, scalability, and extensibility, allowing for future enhancements while maintaining compatibility with the existing Reddcoin ecosystem. By implementing this specification, developers can create a robust identity management solution that provides namespaces, user IDs, and identity profiles with a market-driven allocation mechanism, cross-namespace resolution, and social features.

The document provides clear guidelines for implementation, including coding standards, error handling, documentation, and testing approaches. By following these guidelines, developers can ensure a consistent, maintainable, and high-quality codebase that meets the requirements of the ReddID system.

This specification serves as the primary reference for the development of the ReddID system, providing all necessary details for implementation while allowing for future refinement as development progresses.

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