# Deployed Contracts Registry Below is a list of relevant smart contracts and Github repositories for using and interacting with the Yearn product suite. ## Token Contracts ### YFI The Yearn ecosystem is controlled by YFI token holders who submit and vote on proposals that govern the ecosystem. | Token | Address | | ---------------------------------------------------------------------------- | ------------------------------------------ | | [YFI](https://etherscan.io/token/0x0bc529c00c6401aef6d220be8c6ea1667f6ad93e) | 0x0bc529c00c6401aef6d220be8c6ea1667f6ad93e | ### v2 Yield Tokens The v2 yield tokens can be used in one lender at a time. Currently being used on Curve’s Y Pool, Yearn’s yBTC pool and sUSD pool. | Token | Address | Github | | ---------------------------------------------------------------------------------- | ------------------------------------------ | ---------------------------------------------------------------------------------------- | | [yDAIv2](https://etherscan.io/address/0x16de59092dAE5CcF4A1E6439D611fd0653f0Bd01) | 0x16de59092dAE5CcF4A1E6439D611fd0653f0Bd01 | [YDAIv2.sol](https://github.com/iearn-finance/itoken/blob/master/contracts/YDAIv2.sol) | | [yUSDCv2](https://etherscan.io/address/0xd6aD7a6750A7593E092a9B218d66C0A814a3436e) | 0xd6aD7a6750A7593E092a9B218d66C0A814a3436e | [YUSDCv2.sol](https://github.com/iearn-finance/itoken/blob/master/contracts/YUSDCv2.sol) | | [yUSDTv2](https://etherscan.io/address/0x83f798e925BcD4017Eb265844FDDAbb448f1707D) | 0x83f798e925BcD4017Eb265844FDDAbb448f1707D | [YUSDTv2.sol](https://github.com/iearn-finance/itoken/blob/master/contracts/YUSDTv2.sol) | | [ysUSDv2](https://etherscan.io/address/0xF61718057901F84C4eEC4339EF8f0D86D2B45600) | 0xF61718057901F84C4eEC4339EF8f0D86D2B45600 | [YSUSDv2.sol](https://github.com/iearn-finance/itoken/blob/master/contracts/YSUSDv2.sol) | | [yTUSDv2](https://etherscan.io/address/0x73a052500105205d34daf004eab301916da8190f) | 0x73a052500105205d34daf004eab301916da8190f | [YTUSDv2.sol](https://github.com/iearn-finance/itoken/blob/master/contracts/YTUSDv2.sol) | | [yWBTCv2](https://etherscan.io/address/0x04Aa51bbcB46541455cCF1B8bef2ebc5d3787EC9) | 0x04Aa51bbcB46541455cCF1B8bef2ebc5d3787EC9 | [YWBTCv2.sol](https://github.com/iearn-finance/itoken/blob/master/contracts/YWBTCv2.sol) | ### v3 Yield Tokens The v3 yield tokens allow the underlying assets to be spread across multiple lenders. Currently being used on Curve’s BUSD pool. | Token | Address | Github | | ---------------------------------------------------------------------------------- | ------------------------------------------ | ---------------------------------------------------------------------------------------- | | [yDAIv3](https://etherscan.io/address/0xC2cB1040220768554cf699b0d863A3cd4324ce32) | 0xC2cB1040220768554cf699b0d863A3cd4324ce32 | [YDAIv3.sol](https://github.com/iearn-finance/itoken/blob/master/contracts/YDAIv3.sol) | | [yUSDCv3](https://etherscan.io/address/0x26EA744E5B887E5205727f55dFBE8685e3b21951) | 0x26EA744E5B887E5205727f55dFBE8685e3b21951 | [YUSDCv3.sol](https://github.com/iearn-finance/itoken/blob/master/contracts/YUSDCv3.sol) | | [yUSDTv3](https://etherscan.io/address/0xE6354ed5bC4b393a5Aad09f21c46E101e692d447) | 0xE6354ed5bC4b393a5Aad09f21c46E101e692d447 | [YUSDCv3.sol](https://github.com/iearn-finance/itoken/blob/master/contracts/YUSDCv3.sol) | | [yBUSDv3](https://etherscan.io/address/0x04bC0Ab673d88aE9dbC9DA2380cB6B79C4BCa9aE) | 0x04bC0Ab673d88aE9dbC9DA2380cB6B79C4BCa9aE | [YBUSDv3.sol](https://github.com/iearn-finance/itoken/blob/master/contracts/YBUSDv3.sol) | ## Vault Contracts Vaults follow unique strategies that are designed to maximize yield of the deposited asset and minimize risk. The vaults are maintained by a `Controller` which oversees the strategy execution. Strategies' generated profits are used to buy respective vault underlying asset. The `Controller` contract can be found [here](https://etherscan.io/address/0x9e65ad11b299ca0abefc2799ddb6314ef2d91080#code) and the source code can be found [here](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/controllers/Controller.sol). ### Vaults | Vault | Address | GitHub | | ------------------------------------------------------------------------------------------------- | ------------------------------------------ | ------------------------------------------------------------------------------------------------------ | | [WETH](https://etherscan.io/address/0xe1237aa7f535b0cc33fd973d66cbf830354d16c7) | 0xe1237aa7f535b0cc33fd973d66cbf830354d16c7 | [yWETH.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yWETH.sol) | | [YFI](https://etherscan.io/address/0xba2e7fed597fd0e3e70f5130bcdbbfe06bb94fe1) | 0xba2e7fed597fd0e3e70f5130bcdbbfe06bb94fe1 | [yVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol) | | [curve.fi/3pool LP](https://etherscan.io/address/0x9cA85572E6A3EbF24dEDd195623F188735A5179f#code) | 0x9cA85572E6A3EbF24dEDd195623F188735A5179f | [yVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol) | | [curve.fi/y LP](https://etherscan.io/address/0x5dbcf33d8c2e976c6b560249878e6f1491bca25c) | 0x5dbcf33d8c2e976c6b560249878e6f1491bca25c | [yVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol) | | [curve.fi/busd LP](https://etherscan.io/address/0x2994529c0652d127b7842094103715ec5299bbed) | 0x2994529c0652d127b7842094103715ec5299bbed | [yVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol) | | [curve.fi/sbtc LP](https://etherscan.io/address/0x7ff566e1d69deff32a7b244ae7276b9f90e9d0f6) | 0x7ff566e1d69deff32a7b244ae7276b9f90e9d0f6 | [yVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol) | | [DAI](https://etherscan.io/address/0xacd43e627e64355f1861cec6d3a6688b31a6f952) | 0xacd43e627e64355f1861cec6d3a6688b31a6f952 | [yVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol) | | [TUSD](https://etherscan.io/address/0x37d19d1c4e1fa9dc47bd1ea12f742a0887eda74a) | 0x37d19d1c4e1fa9dc47bd1ea12f742a0887eda74a | [yVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol) | | [USDC](https://etherscan.io/address/0x597ad1e0c13bfe8025993d9e79c69e1c0233522e) | 0x597ad1e0c13bfe8025993d9e79c69e1c0233522e | [yVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol) | | [USDT](https://etherscan.io/address/0x2f08119c6f07c006695e079aafc638b8789faf18) | 0x2f08119c6f07c006695e079aafc638b8789faf18 | [yVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol) | | [GUSD](https://etherscan.io/address/0xec0d8d3ed5477106c6d4ea27d90a60e594693c90) | 0xec0d8d3ed5477106c6d4ea27d90a60e594693c90 | [yVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol) | ### Strategies | Strategy | Address | GitHub | Vault | | ------------------------------------------------------------------------------------------------------ | ------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | [StrategyCurve3CrvVoterProxy](https://etherscan.io/address/0xC59601F0CC49baa266891b7fc63d2D5FE097A79D) | 0xC59601F0CC49baa266891b7fc63d2D5FE097A79D | [StrategyCurve3CrvVoterProxy.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/strategies/StrategyCurve3CrvVoterProxy.sol) | [curve.fi/3pool LP](https://github.com/iearn-finance/docs/tree/5f148a7f8cc45771355a6f1319460f75b8304567/developers/0xe1237aa7f535b0cc33fd973d66cbf830354d16c7/README.md) | | [StrategyMKRVaultDAIDelegate](https://etherscan.io/address/0x932fc4fd0eee66f22f1e23fba74d7058391c0b15) | 0x932fc4fd0eee66f22f1e23fba74d7058391c0b15 | [StrategyMKRVaultDAIDelegate.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/strategies/StrategyMKRVaultDAIDelegate.sol) | [WETH](https://github.com/iearn-finance/docs/tree/5f148a7f8cc45771355a6f1319460f75b8304567/developers/0xe1237aa7f535b0cc33fd973d66cbf830354d16c7/README.md) | | [StrategyYFIGovernance](https://etherscan.io/address/0x395f93350d5102b6139abfc84a7d6ee70488797c) | 0x395f93350d5102b6139abfc84a7d6ee70488797c | [StrategyYFIGovernance.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/strategies/StrategyYFIGovernance.sol) | [YFI](https://github.com/iearn-finance/docs/tree/5f148a7f8cc45771355a6f1319460f75b8304567/developers/0xba2e7fed597fd0e3e70f5130bcdbbfe06bb94fe1/README.md) | | [StrategyCurveYCRVVoter](https://etherscan.io/address/0xc999fb87aca383a63d804a575396f65a55aa5ac8) | 0xc999fb87aca383a63d804a575396f65a55aa5ac8 | [StrategyCurveYCRVVoter.sol](https://github.com/iearn-finance/yearn-protocol/blob/master/contracts/strategies/StrategyCurveYCRVVoter.sol) | [curve.fi/y LP](https://github.com/iearn-finance/docs/tree/5f148a7f8cc45771355a6f1319460f75b8304567/developers/0x5dbcf33d8c2e976c6b560249878e6f1491bca25c/README.md) | | [StrategyCurveYBUSD](https://etherscan.io/address/0xb15ee8e74dac2d77f9d1080b32b0f3562954aee9) | 0xb15ee8e74dac2d77f9d1080b32b0f3562954aee9 | [StrategyCurveYBUSD.sol](https://github.com/iearn-finance/yearn-protocol/blob/master/contracts/strategies/StrategyCurveYBUSD.sol) | [curve.fi/busd LP](https://github.com/iearn-finance/docs/tree/5f148a7f8cc45771355a6f1319460f75b8304567/developers/0x2994529c0652d127b7842094103715ec5299bbed/README.md) | | [StrategyCurveSBTC](https://etherscan.io/address/0x4feeaeced575239b46d70b50e13532ecb62e4ea8) | 0x4feeaeced575239b46d70b50e13532ecb62e4ea8 | [StrategyCurveSBTC.sol](https://github.com/iearn-finance/yearn-protocol/blob/master/contracts/strategies/StrategyCurveSBTC.sol) | [curve.fi/sbtc LP](https://github.com/iearn-finance/docs/tree/5f148a7f8cc45771355a6f1319460f75b8304567/developers/0x7ff566e1d69deff32a7b244ae7276b9f90e9d0f6/README.md) | | [StrategyDAICurve](https://etherscan.io/address/0xaa880345a3147a1fc6889080401c791813ed08dc) | 0xaa880345a3147a1fc6889080401c791813ed08dc | [StrategyDAICurve.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/strategies/StrategyDAICurve.sol) | [DAI](https://github.com/iearn-finance/docs/tree/5f148a7f8cc45771355a6f1319460f75b8304567/developers/0xacd43e627e64355f1861cec6d3a6688b31a6f952/README.md) | | [StrategyTUSDCurve](https://etherscan.io/address/0x1d91e3f77271ed069618b4ba06d19821bc2ed8b0) | 0x1d91e3f77271ed069618b4ba06d19821bc2ed8b0 | [StrategyTUSDCurve.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/strategies/StrategyTUSDCurve.sol) | [TUSD](https://github.com/iearn-finance/docs/tree/5f148a7f8cc45771355a6f1319460f75b8304567/developers/0x37d19d1c4e1fa9dc47bd1ea12f742a0887eda74a/README.md) | | [StrategyDForceUSDC](https://etherscan.io/address/0xa30d1d98c502378ad61fe71bcdc3a808cf60b897) | 0xa30d1d98c502378ad61fe71bcdc3a808cf60b897 | [StrategyDForceUSDC.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/strategies/StrategyDForceUSDC.sol) | [USDC](https://github.com/iearn-finance/docs/tree/5f148a7f8cc45771355a6f1319460f75b8304567/developers/0x597ad1e0c13bfe8025993d9e79c69e1c0233522e/README.md) | | [StrategyDForceUSDT](https://etherscan.io/address/0x787c771035bde631391ced5c083db424a4a64bd8) | 0x787c771035bde631391ced5c083db424a4a64bd8 | [StrategyDForceUSDT.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/strategies/StrategyDForceUSDT.sol) | [USDT](https://github.com/iearn-finance/docs/tree/5f148a7f8cc45771355a6f1319460f75b8304567/developers/0x2f08119c6f07c006695e079aafc638b8789faf18/README.md) | ## Delegated Vault Contracts Volatile assets can also participate in yield farming strategies as part of the Delegated Vaults. Currently, there is only one Delegated Vault: aLINK. The `Controller` deposits LINK into AAVE and borrows stable coins (USDC). The initial health factor of these loans is always above 4, and if the health factor drops below 4 at any time the `Controller` repays a portion of the debt in order to maintain a health factor above 4. The stable coins borrowed (e.g., USDC, DAI, USDT, etc.) depend on the strategy selected by the `Controller`. After obtaining stable coins the `Controller` will deposit them into one of the yVaults identified above. The aLINK vault uses the `StrategyControllerV2` [contract](https://etherscan.io/address/0x2be5d998c95de70d9a38b3d78e49751f10f9e88b#code). The source code for `StrategyControllerV2` is [here](https://github.com/iearn-finance/vaults/blob/master/contracts/controllers/StrategyControllerV2.sol). | Strategy | Strategy | GitHub | | -------------------------------------------------------------------------------------------- | ------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------- | | [StrategyVaultUSDC](https://etherscan.io/address/0x25faca21dd2ad7edb3a027d543e617496820d8d6) | 0x25faca21dd2ad7edb3a027d543e617496820d8d6 | [StrategyVaultUSDC.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/strategies/StrategyVaultUSDC.sol) | | Vault | Address | GitHub | | -------------------------------------------------------------------------------- | ------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------ | | [aLINK](https://etherscan.io/address/0x29e240cfd7946ba20895a7a02edb25c210f9f324) | 0x29e240cfd7946ba20895a7a02edb25c210f9f324 | [yDelegatedVault.sol](https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yDelegatedVault.sol) | ## Governance Contracts YFI holders govern the Yearn ecosystem and are eligible to receive a portion of protocol profits. Therefore, YFI represents a right to govern the platform and a claim on earnings. Profits are obtained from each of Yearn's products. In order to claim profits, YFI holders stake their tokens into the Governance contract. | Contract | Status | Address | | -------------------------------------------------------------------------------------------------------------- | ------ | ------------------------------------------ | | [Governance Staking (v2)](https://etherscan.io/address/0xba37b002abafdd8e89a1995da52740bbc013d992#code) | Live | 0xba37b002abafdd8e89a1995da52740bbc013d992 | | [YearnGovernance (Balancer v1)](https://etherscan.io/address/0x3a22df48d84957f907e67f4313e3d43179040d6e#code) | Old | 0x3a22df48d84957f907e67f4313e3d43179040d6e | | [YearnRewards (Yearn v1)](https://etherscan.io/address/0x0001fb050fe7312791bf6475b96569d83f695c9f#code) | Old | 0x0001fb050fe7312791bf6475b96569d83f695c9f | | [YearnRewards (Balancer v1)](https://etherscan.io/address/0x033e52f513f9b98e129381c6708f9faa2dee5db5#code) | Old | 0x033e52f513f9b98e129381c6708f9faa2dee5db5 | | [YearnRewards (Gov. Staking v1)](https://etherscan.io/address/0xb01419e74d8a2abb1bbad82925b19c36c191a701#code) | Old | 0xb01419e74d8a2abb1bbad82925b19c36c191a701 | ## Status and Info Contracts | Utility | Summary | | ------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [YRegistry](https://etherscan.io/address/0x3ee41c098f9666ed2ea246f4d2558010e59d63a0#code) | The Vault Registry is the single source of truth for active Yearn vaults. The registry allows users to query for active Yearn vaults and vault metadata (details [here](https://hackmd.io/JDWZ6BAuSmm-VRQRp-bZXw#Vault-Registry-)). | | [UniswapROI](https://etherscan.io/address/0xd04ca0ae1cd8085438fdd8c22a76246f315c2687#code) | On-chain uniswap pool ROI calculator | | [APROracle](https://etherscan.io/address/0x97ff4a1b787ade6b94cca95b61f79417c673331d#code) | Allows on-chain rate comparison between Compound, Fulcrum, Aave, and dYdX. | | [UniswapAPR](https://etherscan.io/address/0x4c70D89A4681b2151F56Dc2c3FD751aBb9CE3D95#code) | An on-chain uniswap pool APR calculator. It calculates all values in ETH adjusted for the last year. | | [IEarnAPR](https://etherscan.io/address/0x9cad8ab10daa9af1a9d2b878541f41b697268eec#code) | Contract for on-chain APR decision trees between Compound, Fulcrum, Aave, and dYdX. | | [IEarnManager](https://etherscan.io/address/0x318135fbd0b40d48fcef431ccdf6c7926450edfb#code) | On-chain stateless execution. Recommendations based on IearnAPR. | | [APRWithPoolOracle](https://etherscan.io/address/0xAE8F37F0e8AD690486bFA2495113d7E94B7a7Ba6#code) | APR used for stateless `recommend()` function. Can be used to change the recommended provider. | | [IEarnAPRWithPool](https://etherscan.io/address/0xcD5F61c392B61F440991DEf98FF6Af07FC6900D4#code) | APR used for stateless `recommend()` function. Can be used to change the recommended provider. | ## Utility Contracts | Utility | Address | | --------------------------------------------------------------------------------------------- | ------------------------------------------ | | [Curve's yPool](https://etherscan.io/address/0xdF5e0e81Dff6FAF3A7e52BA697820c5e32D806A8#code) | 0xdF5e0e81Dff6FAF3A7e52BA697820c5e32D806A8 | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://andrecronje.gitbook.io/yearn-finance/developers/deployed-contracts-registry.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.