Overview

To deploy Percent, we need to:

1. Deploy PCT token contract
2. Deploy oracle proxy contract
3. Deploy Unitroller (Comptroller's storage)
4. Deploy Comptroller (Comptroller's implementation)
5. Config Unitroller and Comptroller
6. Deploy pTokens

Deploy PCT token contract

• Source code: https://github.com/percent-finance/compound-protocol/blob/master/contracts/Governance/Comp.sol
• Flatten source code: https://etherscan.io/address/0xbc16da9df0A22f01A16BC0620a27e7D6d6488550#code
• Compiler Version: v0.5.16+commit.9c3226ce
• Optimization Enabled: Yes with 200 runs
• Constructor
  • account: The initial account to grant all the tokens.

Deploy oracle proxy contract

• Source code: https://github.com/percent-finance/compound-protocol/blob/master/contracts/ChainlinkPriceOracleProxy.sol
• Flatten source code: https://etherscan.io/address/0x21A6297114853aEF193c83FC0271dEf69EA1b93d#code
• Compiler Version: v0.5.16+commit.9c3226ce
• Optimization Enabled: Yes with 200 runs
• Constructor
  • ethUsdChainlinkAggregatorAddress_: The Chainlink aggregator address for ETH/USD (It can be found on https://docs.chain.link/docs/reference-contracts. For mainnet it is 0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419).

Deploy Unitroller (Comptroller's storage)

• Source code: https://github.com/percent-finance/compound-protocol/blob/master/contracts/Unitroller.sol
• Flatten source code: https://etherscan.io/address/0xf47dD16553A934064509C40DC5466BBfB999528B#code
• Compiler Version: v0.5.16+commit.9c3226ce
• Optimization Enabled: Yes with 200 runs
• Constructor: Empty

Deploy Comptroller (Comptroller's implementation)

• Source code: https://github.com/percent-finance/compound-protocol/blob/master/contracts/Comptroller.sol
• Flatten source code: https://etherscan.io/address/0x395cb0c7bf2808a11200a9018c98b2839f45c6f9#code

Note: The PCT token address is hard coded in the source code (at the bottom). If you have a new PCT token address (for example when you've just deployed a new PCT token contract on testnet), you must modify the code before deploying.

• Compiler Version: v0.5.16+commit.9c3226ce
• Optimization Enabled: Yes with 200 runs
• Constructor: Empty

Config Unitroller and Comptroller

1. Unitroller: Call _setPendingImplementation(<Comptroller's address>)
2. Comptroller: Call _become(<Unitroller's address>)

Note: The following functions are proxy functions (defined in comptroller's implementation), you can call them even they are not in Unitroller's source code.

3. Unitroller: Call _setPriceOracle(<ChainlinkPriceOracleProxy's address>)
4. Unitroller: Call _setCloseFactor(500000000000000000) (set close factor to 50%)
5. Unitroller: Call _setMaxAssets(20) (set max assets to 20)
6. Unitroller: Call _setLiquidationIncentive(1080000000000000000) (set liquidation incentive to 108%)

Deploy pTokens

• The detailed steps can be found in https://github.com/percent-finance/percent-dev/wiki/New-token-deployment-info-(relevant-to-admin-only)
• Source code
  • JumpRateModelV2
    • Source code: https://github.com/percent-finance/compound-protocol/blob/master/contracts/JumpRateModelV2.sol
    • Flatten source code: https://etherscan.io/address/0x3F7C656C0C3F547Cb18D7a15318e98Ae44Ed8cbc#code
  • CErc20Delegate
    • Source code: https://github.com/percent-finance/compound-protocol/blob/master/contracts/CErc20Delegate.sol
    • Flatten source code: https://etherscan.io/address/0xfb770c8822761790A5f41867654911c2A6261300#code
  • CErc20Delegator
    • Source code: https://github.com/percent-finance/compound-protocol/blob/master/contracts/CErc20Delegator.sol
    • Flatten source code: https://etherscan.io/address/0x2404987433ff32e32c5b0F8Fb77A74a5BcA44aCb#code