Edu Chain

dApps built on EduChain can leverage DIA oracles to access up-to-date asset price information.

DIA is a cross-chain oracle provider that sources granular market data from diverse exchanges, including CEXs and DEXs. Its data sourcing is thorough, enabling unparalleled transparency and customizability for resilient price feeds for 20,000+ assets. Its versatile data processing and delivery ensures adaptability and reliability for any decentralized application.

Oracle details

Chain	Address
Mainnet	0x56BddAc934157c213c37864e3443E5196b47a1d1
Testnet	0x6626f442ebc679f7e35bc62e36e3c1e8820c81c9

Oracle configuration

Pricing Methodology	MAIR
Deviation (%) & Refresh Frequency	0.5% and 120 seconds
Heartbeat	24h

Asset feeds

Asset Ticker	getValue(key)	Asset Markets
EDU	EDU/USD	EDU markets
ETH	ETH/USD	ETH markets
WBTC	WBTC/USD	WBTC markets
USDC	USDC/USD	USDC markets
USDT	USDT/USD	USDT markets
DAI	DAI/USD	DAI markets
ARB	ARB/USD	ARB markets
wstETH	wstETH/USD	wstETH markets
GRAIL	GRAIL/USD	GRAIL markets

How to access data

To consume price data, you’ll need to invoke the getValue method on the oracle contract which you can access through the DIA Oracle library or the interface.

Below is an example of a contract consuming data from the oracle on EduChain testnet using the IDIAOracleV2 interface. If you pass WBTC/USD as the key, it will return the most recent price of BTC in USD with 8 decimal places (e.g. 8258705325665 is $82,587.05325665) along with the Unix timestamp of the last price update.

pragma solidity ^0.8.13;

interface IDIAOracleV2 {
    function getValue(string memory) external view returns (uint128, uint128);
}

contract DIAOracleV2Consumer {

    address immutable ORACLE = 0x6626f442ebc679f7e35bc62e36e3c1e8820c81c9;

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

See the full example here.

Support

For developer assistance, connect with the DIA team directly on Discord or Telegram.

Developers seeking other specialized, production-grade oracle with tailored price feeds and configurations can initiate the request by contacting the DIA BD Team via Telegram.