Oracle - Price Feed Contracts

XRPL Testnet

Core Oracle Contracts

• Chainlink Oracle: 0xD0B01274baEcEF57AB4411128536688168DBf1F6
• Resilient Oracle: 0xA5aa780AD24D0Cf15Bdea40BC7bb0057C79941b6
• Bound Validator: 0xb81f18E74ca6320BC21fD1c6f305b40936226f4C

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Oracle Descriptions

Chainlink Oracle

Primary oracle adapter for Chainlink price feeds. Provides reliable, decentralized price data for major tokens including:

• WBTC
• WETH
• USDC
• USDT
• DAI
• FRAX
• CRV
• crvUSD
• weETH
• eETH
• And other supported assets

Chainlink feeds use tamper-proof, off-chain computed prices from a decentralized network of node operators.

Resilient Oracle

Secondary oracle aggregator that provides price resilience by:

• Combining multiple price sources (Chainlink, RedStone, etc.)
• Falling back to alternative sources if primary fails
• Validating prices within acceptable bounds
• Protecting against flashloan attacks and oracle manipulation

Ensures protocol stability by always having a reliable price source available.

Bound Validator

Smart contract that validates oracle prices by:

• Checking price movement bounds (upper and lower limits)
• Preventing extreme price swings that indicate oracle failures
• Enforcing reasonable price deviation ratios between price updates
• Protecting liquidation and risk management systems from exploitation

Maintains price validation rules for each asset pair to ensure data integrity.

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Supported Assets (XRPL Testnet)

Core Assets

• WBTC - Wrapped Bitcoin
• WETH - Wrapped Ether
• USDC - USD Coin
• USDT - Tether USD
• DAI - Dai Stablecoin
• FRAX - Frax Stablecoin
• crvUSD - Curve USD Stablecoin
• CRV - Curve DAO Token

Liquid Staked Assets

• weETH - Wrapped eETH (ether.fi ETH)
• eETH - ether.fi ETH
• wstETH - Wrapped Staked ETH (Lido)

Reward Tokens

• RFT - RheoFi Protocol Token

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Price Feed Configuration

Each oracle maintains configurable price feed sources:

Asset	Primary Source	Fallback Source	Update Frequency
WBTC	Chainlink	Resilient	Real-time
WETH	Chainlink	Resilient	Real-time
USDC	Chainlink	Resilient	Real-time
USDT	Chainlink	Resilient	Real-time
DAI	Chainlink	Resilient	Real-time
FRAX	Chainlink	Resilient	Real-time
crvUSD	Chainlink	Resilient	Real-time
CRV	Chainlink	Resilient	Real-time
weETH	Chainlink	Resilient	Real-time
eETH	Chainlink	Resilient	Real-time
wstETH	Chainlink	Resilient	Real-time
RFT	Chainlink	Resilient	Real-time

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Architecture

┌─────────────────────────────────────────────┐
│         Protocol (Comptroller/RTokens)       │
└────────────────┬────────────────────────────┘
                 │
        ┌────────▼────────┐
        │ Resilient Oracle │
        └────────┬────────┘
                 │
     ┌───────────┼───────────┐
     │           │           │
┌────▼───┐  ┌────▼─────┐  ┌──▼──────┐
│Chainlink│  │ Fallback │  │ Bound   │
│ Oracle  │  │  Oracles │  │Validator│
└────────┘  └──────────┘  └─────────┘

Price Resolution Flow

1. Request: Protocol queries price for an asset
2. Primary Check: Chainlink Oracle provides price
3. Validation: Bound Validator checks price bounds
4. Resilience: If primary fails, Resilient Oracle falls back to alternative sources
5. Response: Validated price returned to protocol

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Price Feed Updates

• Real-time Feeds: Prices update immediately when new data becomes available
• Update Threshold: Prices refresh when they deviate beyond configured percentage
• Heartbeat: Prices update at minimum every 24 hours regardless of deviation
• Validation: All prices subject to bound validation before use

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Notes

• All addresses are deployed on XRPL Testnet
• Oracle contracts use proxy pattern for upgradability
• Price feeds are decentralized and tamper-resistant
• Multiple fallback sources ensure high availability
• Bound validators protect against extreme price manipulation
• All prices denominated in USD with 18 decimal places