Create oracle adapters for each Funding instance

[dapp-whisperer]

Funding Assets

• wBTC
• renBTC
• Badger ibBTC LP Vault
• ETH
• FRAX
• USDC
• CVX
• Badger

[shuklaayush]

Chainlink feeds

WBTC-BTC: 0xfdFD9C85aD200c506Cf9e21F1FD8dd01932FBB23

BTC-ETH: 0xdeb288F737066589598e9214E782fa5A8eD689e8
BTC-USD: 0xF4030086522a5bEEa4988F8cA5B36dbC97BeE88c

ETH-USD: 0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419

FRAX-ETH: 0x14d04Fff8D21bd62987a5cE9ce543d2F1edF5D3E
FRAX-USD: 0xB9E1E3A9feFf48998E45Fa90847ed4D467E8BcfD

USDC-ETH: 0x986b5E1e1755e3C2440e960477f25201B0a8bbD4
USDC-USD: 0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6

CVX-ETH: 0xC9CbF687f43176B302F03f5e58470b77D07c61c6
CVX-USD: 0xd962fC30A72A84cE50161031391756Bf2876Af5D

BADGER-ETH: 0x58921Ac140522867bf50b9E009599Da0CA4A2379
BADGER-USD: 0x66a47b7206130e6FF64854EF0E1EDfa237E65339

[dapp-whisperer]

After this is complete, will spawn new issues to integrate through the rest of the project:

• testing
• param dump script
• monitoring website
• oracle price bot watcher

[shuklaayush]

CTDL-WBTC

• CTDL-WBTC Curve v2 pool's price_oracle()
  https://github.com/Citadel-DAO/citadel-contracts/blob/8dfa7bc46652d4770f4fb14a8a08ebca01cd5e2b/src/oracles/CtdlWbtcCurveV2Provider.sol

CTDL-renBTC

• CTDL-WBTC + WBTC-BTC feed to get a CTDL-BTC feed and use that as CTDL-renBTC
  https://github.com/Citadel-DAO/citadel-contracts/blob/d8c3dceb0e665f9f9e95ad962537c6156192e69d/src/oracles/CtdlBtcChainlinkProvider.sol

CTDL-ETH

• CTDL-WBTC Curve v2 pool's price_oracle() + from chainlink:
  • ETH-BTC + WBTC-BTC
    https://github.com/Citadel-DAO/citadel-contracts/blob/d8c3dceb0e665f9f9e95ad962537c6156192e69d/src/oracles/CtdlEthChainlinkProvider.sol
  • ETH-USD + USD-BTC + WBTC-BTC
    https://github.com/Citadel-DAO/citadel-contracts/blob/8dfa7bc46652d4770f4fb14a8a08ebca01cd5e2b/src/oracles/CtdlAssetChainlinkProvider.sol

CTDL-X [USDC/FRAX/CVX/BADGER]

• CTDL-WBTC Curve v2 pool's price_oracle() + from chainlink:
  • X-ETH + ETH-BTC + WBTC-BTC
  • X-USD + USD-BTC + WBTC-BTC
    https://github.com/Citadel-DAO/citadel-contracts/blob/8dfa7bc46652d4770f4fb14a8a08ebca01cd5e2b/src/oracles/CtdlAssetChainlinkProvider.sol

ibBTC LP vault

• CTDL-WBTC Curve v2 pool's price_oracle() + WBTC-BTC from chainlink + BTC-LP from Curve's get_virtual_price() + LP-Vault from vault's getPricePerShare()
  https://github.com/Citadel-DAO/citadel-contracts/blob/8dfa7bc46652d4770f4fb14a8a08ebca01cd5e2b/src/oracles/CtdlWibbtcLpVaultProvider.sol

[sajanrajdev]

Adapters logic review:

CTDL-WBTC - LGTM

• Fetches price from Curve's pool's price_oracle() directly

CTDL-renBTC - LGTM

• Fetches wBTC/BTC price from Chainlink feed
• Fetches wBTC/CTDL price from Curve's pool price_oracle()
• (wBTC/CTDL)/(wBTC/BTC) = BTC/CTDL

CTDL-ETH - LGTM
From https://github.com/Citadel-DAO/citadel-contracts/blob/d8c3dceb0e665f9f9e95ad962537c6156192e69d/src/oracles/CtdlEthChainlinkProvider.sol by:

• Fetches wBTC/BTC price from Chainlink feed
• Fetches BTC/ETH price from Chainlink feed
• wBTC/BTC * BTC/ETH = wBTC/ETH
• Fetches wBTC/CTDL price from Curve's pool price_oracle()
• (wBTC/CTDL)/(wBTC/ETH) = ETH/CTDL

From https://github.com/Citadel-DAO/citadel-contracts/blob/8dfa7bc46652d4770f4fb14a8a08ebca01cd5e2b/src/oracles/CtdlAssetChainlinkProvider.sol by:
(With Asset = ETH, Base = USD)

• Fetches wBTC/BTC price from Chainlink feed
• Fetches BTC/USD price from Chainlink feed
• Fetches ETH/USD price from Chainlink feed
• wBTC/ETH = wBTC/BTC * ((BTC/USDC)/(ETH/USD))
• Fetches wBTC/CTDL price from Curve's pool price_oracle()
• (wBTC/CTDL)/(wBTC/ETH) = ETH/CTDL

CTDL-X [USDC/FRAX/CVX/BADGER] - LGTM
(With Asset = X, Base = USD)

• Fetches wBTC/BTC price from Chainlink feed
• Fetches BTC/USD price from Chainlink feed
• Fetches X/USD price from Chainlink feed
• wBTC/X = wBTC/BTC * ((BTC/USD)/(X/USD))
• Fetches wBTC/CTDL price from Curve's pool price_oracle()
• (wBTC/CTDL)/(wBTC/X) = X/CTDL

(With Asset = X, Base = ETH)

• Fetches wBTC/BTC price from Chainlink feed
• Fetches BTC/ETH price from Chainlink feed
• Fetches X/ETH price from Chainlink feed
• wBTC/X = wBTC/BTC * ((BTC/ETH)/(X/ETH))
• Fetches wBTC/CTDL price from Curve's pool price_oracle()
• (wBTC/CTDL)/(wBTC/X) = X/CTDL

ibBTC LP vault - LGTM

• Fetches wBTC/BTC price from Chainlink feed
• ibBTCCrv/BTC = ibBTCCrv.ppfs() * ibBTCCrv_Curve_pool.get_virtual_price()
• Fetches wBTC/CTDL price from Curve's pool price_oracle()
• ibBTCCrv/CTDL
• ibBTCCrv/BTC * (wBTC/CTDL)/(wBTC/BTC) = ibBTCCrv/CTDL

Chainlink Data Feeds required:
wBTC/BTC: https://data.chain.link/ethereum/mainnet/crypto-other/wbtc-btc
BTC/ETH: https://data.chain.link/ethereum/mainnet/crypto-eth/btc-eth
BTC/USD: https://data.chain.link/ethereum/mainnet/crypto-usd/btc-usd
ETH/USD: https://data.chain.link/ethereum/mainnet/crypto-usd/eth-usd
USDC/USD: https://data.chain.link/ethereum/mainnet/stablecoins/usdc-usd
FRAX/USD: https://data.chain.link/ethereum/mainnet/stablecoins/frax-usd
CVX/USD: https://data.chain.link/ethereum/mainnet/crypto-usd/cvx-usd
BADGER/USD: Non
USDC/ETH: https://data.chain.link/ethereum/mainnet/stablecoins/usdc-eth
FRAX/ETH: https://data.chain.link/ethereum/mainnet/crypto-eth/frax-eth
CVX/ETH: https://data.chain.link/ethereum/mainnet/crypto-eth/cvx-eth
BADGER/ETH: Non

Notes:

• All Chainlink price feeds are fetches through a wrapper that integrates several safety checks (staleness, 0 price..) - LGTM
• There doesn't seem to be any active Chainlink feeds for BADGER - Could alternatively fetch on-chain from its different LPs

Adapters LGTM