Frax Finance ¤
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  • Frax Ecosystem Overview
  • FXS & veFXS
    • Frax Shares (FXS)
    • veFXS
    • Gauges
    • FXS Distribution
    • FXS Smart Contract & Addresses
  • GOVERNANCE
    • Frax Governance Overview
    • How It Works
    • Advanced Concepts
    • Fraxtal Snapshot Voting
  • FRAX V1 - ORIGINAL
    • Original Design
    • Staking Contracts
    • FRAX ABI & Token Addresses
    • Frax V1 Pool ABI & Addresses
    • Core Frax Multisigs
  • FRAX V2 - Algorithmic Market Operations (AMO)
    • AMO Overview
    • AMO Minter
    • Collateral Investor
    • Curve
    • Uniswap v3
    • FRAX Lending
    • Decentralization Ratio (DR)
  • FRAX V3 - 100% CR AND MORE
    • Overview
    • Fraxtal
    • AMOs
    • RWAs
    • sFRAX
    • FXBs
    • sFRAX Token Addresses
    • sFRAX & FXB Multisigs
  • Bridging
    • Fraxferry
    • LayerZero x Stargate
    • Fraxtal Bridge
  • Frax Price Index
    • Overview (CPI Peg & Mechanics)
    • Frax Price Index Share (FPIS)
    • FPIS Distribution
    • CPI Tracker Oracle
    • FPI Controller Pool
    • veFPIS
    • FPIS Conversion / FPIS Locker
    • FPI and FPIS Token Addresses
    • FPI Multisigs
  • Fraxswap
    • Overview
    • Technical Specifications
    • Fraxswap Contract Addresses
  • Fraxlend
    • Fraxlend Overview
    • Key Concepts
    • Lending
    • Borrowing
    • Advanced Concepts
      • Position Health & Liquidations
      • Interest Rates
      • Vault Account
    • ABI & Code
    • Fraxlend Multisigs
  • Frax Ether
    • Overview
    • frxETH and sfrxETH
    • Technical Specifications
    • Redemption
    • frxETH V2
    • frxETH V2 Technical Details
    • frxETH Code & V2 Addresses
    • frxETH and sfrxETH Token Addresses
    • frxETH Multisigs
  • BAMM
    • Overview
  • Frax Oracle
    • Frax Oracle Overview
    • How It Works
    • Advanced Concepts
    • Fraxtal Merkle Proof Oracles
  • Guides & FAQ
    • FAQ
    • Staking
    • Uniswap Migration / Uniswap V3
    • Fraxswap / FPI
  • Miscellany
    • All Contract Addresses
    • Bug Bounty
    • Miscellaneous & Bot Addresses
    • API
  • Other
    • Audits
    • Media Kit / Logos
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On this page
  • Getting a Fresh Price
  • Smart Contract Design
  • Timelock Configuration
  • Attacks and Mitigations
  • Contract Addresses
  • L1
  • L2 (Arbitrum)

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  1. Frax Oracle

Advanced Concepts

PreviousHow It WorksNextFraxtal Merkle Proof Oracles

Last updated 8 months ago

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Getting a Fresh Price

Since the Frax protocol only updates Frax Oracle prices once per day, the price may be up to 23 hours and 59 minutes old. If you need a fresher price, you can call addRoundData() on the Dual Oracle to write a fresh price, and then call latestRoundData() / getRoundData() / getPrice() on the Frax Oracle to retrieve the fresh price.

Smart Contract Design

Timelock Configuration

Controls all configurations for all Frax Oracles on L1: 0x8412ebf45bAC1B340BbE8F318b928C466c4E39CA

Controls all configurations for all Frax Oracles on Arbitrum: 0xB426B13372B7c967C4a2371B5e95FC7dc37545Db

Attacks and Mitigations

Oracle manipulation attacks are handled economically. There is too much protocol owned liquidity for manipulating the Curve / Uniswap pools to be profitable. Bounding prices ensures that frxEth/sfrxEth will never be overvalued and will never be undervalued by more than 30%. frxEth is fully backed with ETH in validators, so the only risk that exists with it is time duration risk.

Contract Addresses

L1

Dual Oracles / Price Sources

FrxEthEthDualOracle: 0x350a9841956D8B0212EAdF5E14a449CA85FAE1C0

SfrxEthEthDualOracle: 0x584902BCe4282003E420Cf5b7ae5063D6C1c182a

Frax Oracles

SfrxEthFraxOracle: 0x3d3D868522b5a4035ADcb67BF0846D61597A6a6F

Crosschain

ArbitrumBlockHashRelay: 0x784906554d44d33c2764c86e8848a2bd71c2e3a7

L2 (Arbitrum)

ArbitrumBlockHashProvider: 0x240ff0894c584d39f992de5fdb603e03fc7e8a98

StateRootOracle: 0x11afa1d35f246fdc00d789e4a06f682b206f88c9

Price Source

MerkleProofPriceSource: 0xb032b46f835fa9e3d95d1e3f46fd307429505f9a

Dual Oracles / Price Sources

FrxEthEthDualOracle: TBD

SfrxEthEthDualOracle: TBD

Frax Oracles

SfrxEthFraxOracle: TBD

L1 -> L2