About YFI
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Yearn Finance is a suite of products in Decentralized Finance (DeFi) that provides lending aggregation, yield generation, and insurance on the Ethereum blockchain. The protocol is maintained by various independent developers and is governed by YFI holders.
It started out as a passion project by Andre Cronje to automate the process of switching capital between lending platforms in search of the best yield offered, as the lending yield is a floating rate rather than fixed rate. Funds are shifted between dYdX, AAVE, and Compound automatically as interest rates change between these protocols.
The service offered includes major USD tokens such as DAI, USDT, USDC, and TUSD. For example, if a user deposits DAI into yearn.finance, the user will receive yDAI token in return, which is a yield-bearing DAI token.
Later on, it collaborated with Curve Finance to release a yield-bearing USD tokens pool that includes four y-tokens: yDAI, yUSDT, yUSDC and yTUSD, it is named as yUSD.
Yearn Finance debuted the vault feature after its token launch, igniting a frenzy on automated yield farming and is considered the initiator of the category of yield farming aggregator. Basically, the vault will help users to claim yield farming rewards and sell it for the underlying assets.
Vaults benefit users by socializing gas costs, automating the yield generation and rebalancing process, and automatically shifting capital as opportunities arise. End users also do not need to have proficient knowledge of the underlying protocols involved or DeFi, thus the Vaults represent a passive-investing strategy. It is akin to a crypto hedge fund where the aim is to increase the amount of assets that users deposited.
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Laser Scorebeta Last Audit: 18 June 2023
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TransparentUpgradeableProxy.upgradeToAndCall(address,bytes).newImplementation (#429) lacks a zero-check on :
- (success) = newImplementation.delegatecall(data) (#432)
UpgradeableProxy.constructor(address,bytes)._logic (#255) lacks a zero-check on :
- (success) = _logic.delegatecall(_data) (#260)
Check that the address is not zero.
Additional information: link
Modifier TransparentUpgradeableProxy.ifAdmin() (#366-372) does not always execute _; or revert
All the paths in a modifier must execute _ or revert.
Additional information: link
TransparentUpgradeableProxy.constructor(address,address,bytes)._admin (#346) shadows:
- TransparentUpgradeableProxy._admin() (#439-445) (function)
BEP20UpgradeableProxy.constructor(address,address,bytes).admin (#475) shadows:
- TransparentUpgradeableProxy.admin() (#383-385) (function)
Rename the local variables that shadow another component.
Additional information: link
TransparentUpgradeableProxy._setAdmin(address) (#450-457) uses assembly
- INLINE ASM (#454-456)
Proxy._delegate(address) (#23-43) uses assembly
- INLINE ASM (#25-42)
Address._functionCallWithValue(address,bytes,uint256,string) (#207-228) uses assembly
- INLINE ASM (#220-223)
UpgradeableProxy._setImplementation(address) (#301-310) uses assembly
- INLINE ASM (#307-309)
Address.isContract(address) (#114-123) uses assembly
- INLINE ASM (#121)
TransparentUpgradeableProxy._admin() (#439-445) uses assembly
- INLINE ASM (#442-444)
UpgradeableProxy._implementation() (#280-286) uses assembly
- INLINE ASM (#283-285)
Do not use evm assembly.
Additional information: link
Different versions of Solidity are used:
- Version used: ['^0.6.0', '^0.6.2']
- ^0.6.0 (#5)
- ^0.6.2 (#91)
- ^0.6.0 (#235)
- ^0.6.0 (#317)
- ^0.6.0 (#470)
Use one Solidity version.
Additional information: link
Address.sendValue(address,uint256) (#141-147) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#192-194) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#202-205) is never used and should be removed
Address._functionCallWithValue(address,bytes,uint256,string) (#207-228) is never used and should be removed
Address.functionCall(address,bytes,string) (#177-179) is never used and should be removed
Address.functionCall(address,bytes) (#167-169) is never used and should be removed
Remove unused functions.
Additional information: link
solc-0.6.4 is not recommended for deployment
Pragma version^0.6.2 (#91) allows old versions
Pragma version^0.6.0 (#235) allows old versions
Pragma version^0.6.0 (#5) allows old versions
Pragma version^0.6.0 (#317) allows old versions
Pragma version^0.6.0 (#470) allows old versions
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.
Additional information: link
Low level call in TransparentUpgradeableProxy.upgradeToAndCall(address,bytes) (#429-434):
- (success) = newImplementation.delegatecall(data) (#432)
Low level call in Address.sendValue(address,uint256) (#141-147):
- (success) = recipient.call{value: amount}() (#145)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#207-228):
- (success,returndata) = target.call{value: weiValue}(data) (#211)
Low level call in UpgradeableProxy.constructor(address,bytes) (#255-263):
- (success) = _logic.delegatecall(_data) (#260)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Unable to find Telegram link on the website
Token is not listed at Mobula.Finance
Additional information: link
Unable to find Twitter link on the website
Unable to find audit link on the website
Price for YFI
LASER DESK beta
Twitter account link seems to be invalid
Unable to find Youtube account