Starting to Enforce a new Rule.

A change to Difficulty.

The tendency toward reduced participation in Mining or Validation. Implies Pooling or Centralization.

The first Communication of a Block to another Person.

A fraction of Blocks in a Chain Segment. Public estimates of specific Miner Hash Power are based on this.

Use of Hash Power to enable Double Spending.

The set of principles that secure a Coin from the State. The term and principles are defined by Satoshi in “Bitcoin: A Peer-to-Peer Electronic Cash System”.

A Valid set of Transactions with Timestamp and Proof.

The set of Weak Blocks. Orphan Pool is a misnomer for this.

To Trade time with Units for property of greater Utility to the Lender.

A Valid sequence of Blocks.

A potential Block with undetermined Proof.

The limit to Supply over all time.

The product of Price and Supply.

Subjective Confirmation.

The tendency toward few Merchants. Merchants directly control Validation. May also refer to Pooling

The Branch with the most cumulative Proof.

A Person who holds a claim on property under the control of a Custodian. Also a lien-holder, shareholder, lender, or depositor.

An asymmetrical Protocol.

Use of aggression to compel Activation.

A Consensus regarding a mutually-acceptable medium for Trade. BTC is a Coin.

A Transaction that Transfers a Reward.

Conveyance of data between Machines.

Inclusion of a Transaction in a Block.

An agreement among People. Also the set of people who participate in an agreement.

The set of constraints that define a Coin.

A Script that expresses Transfer conditions. Public Key Script is an anachronism for this.

Use of aggression to control Hash Power.

The ability to Taint using statistical Chain analysis.

A Person who controls the property of another by agreement.

The tendency opposing Centralization.

A Mine that shares Reward with another to reduce Variance.

The tendency toward few Owners. Owners directly control Spending.

Using Communication to exploit Protocol or Implementation flaws that degrade performance. DoS is an acronym for this.

One more than the count of Blocks after a Confirmation.

A Person creating an Implementation.

The level of Proof required for Validity.

Market aggression that skews the cost of Mining.

The Endorsement of the same Output Contract by distinct Spends.

An insufficient number of Units for Transfer via an Output. BTC Consensus Rules prohibit transfer of less than one unit.

A fraction of all property offered in Exchange.

The set of all Merchants.

A Script that satisfies a Contract. Signature Script is an anachronism for this.

The act of discarding Invalid data.

The Trade of Units for other property.

An implicit Transfer to a Miner.

A divergence in Consensus Rules.

The first Block of all Branches of a Coin.

A Tool that performs Hashing.

A Person operating a Grind.

A reduction in the Subsidy rate (by half).

A Fork that implies a Split. Expansion of the set of potentially-Valid Blocks.

An atomic computation to Prove Candidate Validity.

A fraction of the Hash Rate of all Mines.

The rate of Hashing.

The count of preceding Blocks in a Branch.

To Own for future use.

A Miner who builds on the Blocks of others.

The means to associate Communication with a Person.

A specific Tool set.

The increase in Supply resulting from Subsidy. A monetary inflation, not to be confused with Price Inflation.

An Output Point and an Endorsement.

The rate of increase in Utility from Lending.

The delay inherent in Communication.

Trade using a sequence of Unconfirmed Transactions that can be Settled by either party.

To Trade time without Units for property of greater Utility. Invest is an alias for this.

An expression of earliest Transaction Validity.

Failure of Investment to earn Interest.

An instruction follower.

A subset of Miners with sufficient Hash Power to execute a sustained Attack. 51% is a common approximation of sufficient power.

The Trade in certain property.

The Depth at which a Coinbase Output becomes Transferable.

An average of preceding Block Timestamps.

A Person accepting Units in Trade. User is a common alias for this.

A Tool that performs Work.

A Person operating a Mine.

A Tool that performs Validation.

An atomic declaration of intent.

A Tool change that reduces the cost of Mining.

An Announcement adding a Block to the Chain.

An explicit Transfer and a Contract.

A Person controlling certain Units. Holder is a common alias for this.

An inability of certain Nodes to Communicate.

The tendency toward persistent Partitions.

A symmetrical Protocol.

The average time between Organizations.

A decision maker.

A reference to an Output or Input.

Pertaining to the actions of States.

The tendency toward few Miners, including consolidation by Relays.

The relative level of control of a Person over the Chain or Coin.

The Output to which an Input refers.

An average or instantaneous Exchange rate.

The increase in Price over time.

A return on Investment above the Market rate of Interest.

Valid evidence.

Probabilistic Proof of an amount of usable computing memory (PoM).

Cryptographic Proof of an amount of Ownership (PoS).

Probabilistic Proof of an amount of Work performed (PoW).

A set of Communication conventions.

A Tool that disseminates new Blocks.

A Person operating a Relay.

An Announcement promoting a Weak Branch to the Chain. Reorg is an abbreviation for this.

The sum of Subsidy and Fees for a Block.

A subset of Consensus Rules.

A set of Operations that authorizes Transfer.

A contiguous subset of a Branch.

A Miner who is not always Honest.

Confirmation of Layered Transactions.

A Miner indication via Block data of intent to Enforce a new Rule.

A Fork that implies a Split unless Enforced by Majority Hash Power. Contraction of the set of potentially-Valid Blocks.

To Own in expectation of Price increase. Also to Borrow in expectation of price decrease.

The initial publication of a Transaction.

A Coin bifurcation.

The lack of Height increase over time.

A set of People that uses aggression in place of Trade. Typically operates with impunity within geographic limits.

A Branch with more cumulative Proof than another.

The issuance of new Units to a Miner.

The set of all issued Units.

Determination of Ownership.

A declaration of the time of Block production.

A set of Machine instructions.

A voluntary swap of property between two People.

A Valid record of Transfer.

The set of UnconfirmedTransactions. Memory Pool is a misnomer for this.

The change of control over certain Units.

A Transaction that does not exist in a Block.

A minimum Transferable amount of property represented by a Coin. The satoshi is the Bitcoin unit.

The usefulness of certain property to a Person.

The process of determining Validity.

Conformance to Consensus Rules.

The preference of a Person for certain property over other.

The varying frequency of achieving a Reward.

Differences in the resource cost of Mining.

Deviation in Price over time.

A Tool that creates Transactions.

A Branch with less cumulative Proof than another. Orphan is a misnomer for this.

The purposeful delay of Announcement.

The process of Block production.