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DIA

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

Querying the price of ARB through DIA​

Call the getValue(string memory key) function on the oracle contract with the Query Symbol (e.g., "ARB/USD"). The function returns the asset price with 8 decimal precision and the timestamp of the last update. We'll use this oracle contract on the Arbitrum Sepolia testnet: 0x927ccBd9107bD63F8279Af83b96E7DAF924b9a7E.

Solidity Example:

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: "0x927ccBd9107bD63F8279Af83b96E7DAF924b9a7E"
    * Network: Arbitrum Sepolia
    */
    address constant diaOracle = "0x927ccBd9107bD63F8279Af83b96E7DAF924b9a7E";

    function getPrice(string memory key)
    external
    view
    returns (
        uint128 latestPrice,
        uint128 timestampOfLatestPrice
    ) {
        (latestPrice, timestampOfLatestPrice) =
                 IDIAOracleV2(diaOracle).getValue(key);
    }
}

More examples​

Please refer to DIA’s documentation for more examples on querying data feeds and learn about DIA's verifiable oracle stack.

Additional resources: