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DIA

DIA is a cross-chain, trustless oracle network delivering verifiable price feeds for Astar. DIA sources raw trade data directly from primary markets and computes it onchain, ensuring complete transparency and data integrity.

Key features​

  • Complete verifiability from source to destination smart contract.
  • Direct data sourcing from 100+ primary markets eliminating intermediary risk.
  • Support for 20,000+ assets across all major asset classes.
  • Custom oracle configuration with tailored sources and methodologies.

Data products​

  • Token Price Feeds: Real-time market prices for assets across CEXs and DEXs.
  • Fundamental Feeds: Fair value pricing and backing data (NAV, Proof of Reserve, and more).
  • Real-World Asset (RWA) Feeds: Traditional financial data including Equities, FX rates, commodities, and ETFs.
  • Randomness: Verifiable random number generation for gaming, lotteries, and more.

Querying DIA price feeds​

Call the getValue(string memory key) function on the oracle contract with the Query Symbol (e.g., "BTC/USD"). The function returns the asset price with 8 decimal precision and the timestamp of the last update. We'll use this address on Astar: 0xd79357ebb0cd724e391f2b49a8De0E31688fEc75

pragma solidity ^0.8.13;
interface IDIAOracleV2 {
    function getValue(string memory) external view returns (uint128,
             uint128);
}
contract DIAOracleSample {
    /**
    * @notice The DIA oracle to read from.
    * Oracle Address: 0xd79357ebb0cd724e391f2b49a8De0E31688fEc75
    * Network: Astar Network
    */
    address constant diaOracle = 0xd79357ebb0cd724e391f2b49a8De0E31688fEc75;
    function getPrice(string memory key)
    external
    view
    returns (
        uint128 latestPrice,
        uint128 timestampOfLatestPrice
    ) {
        (latestPrice, timestampOfLatestPrice) =
                 IDIAOracleV2(diaOracle).getValue(key);
    }
}

View the complete integration guide for Astar here.

Request a custom oracle​

For dapps requiring specific configurations, DIA deploys production-grade custom oracles tailored to your requirements with configurable data sources, pricing methodologies, update triggers, and coverage for any of 20,000+ supported assets.

→ Request a custom oracle

Resources​