Oracles
Get Started With Oracles
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Create your custom Oracles
Choose a type
Select Delivery Blockchain
Network
| Market | Source | Type | Category | Blockchain | Contract |
|---|---|---|---|---|---|
No data for table
| |||||
Feeds built to serve a specific use case which are not suitable for broader market
Filtering and Addons
Latency can be changed depending on block time from a certain blockchain and it can be accelerated or slowed down.
Outlier slippage
10 %
RT Latency
5 sec
Outlier detection
It involves all the markets (eg. BTC/BNB, ETH/EUR...) from all the sources (decentralized and centralized exchanges).
Market example
BTC/BNB
Max difference in the price
10 %
Oracle code example
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import { createOrGetRandomnessRequest, RandomnessFullfilled, RandomnessRequested, verifyRandomnessOffchain } from './lib/orao-vrf-solana-js/index.esm'; // path to copied library, includes VRF contract address
import { Keypair, PublicKey, Transaction, clusterApiUrl, Connection } from '@solana/web3.js';
// Create a connection to to Solana's devnet network
const cluster = "devnet";
const connection = new Connection(clusterApiUrl(cluster));
// Generate a new keypair
const payer = Keypair.generate();
// request an airdrop of 1 SOL for your new keypair -- ** not applicable for mainnet
const airdroptx = await connection.requestAirdrop(payer.publicKey, 1 * LAMPORTS_PER_SOL);
await connection.confirmTransaction(airdroptx, "finalized");
const walletPublicKey = payer.publicKey;
const seed = new PublicKey('<public key>'); // public key can be generated using Keypair.generate().publicKey
const request = await createOrGetRandomnessRequest(walletPublicKey, cluster, seed.toBuffer());
if (request instanceof Transaction) {
//Request randomness
request.recentBlockhash = (await connection.getRecentBlockhash()).blockhash;
request.feePayer = publicKey;
const tx = await connection.sendTransaction(request, [payer]);
alert('randomness requested');
} else if (request instanceof RandomnessRequested) {
//randomness has been requested but not fulfilled yet
alert('Request pending...');
} else if (request instanceof RandomnessFullfilled) {
//radnomness has been fulfilled
alert('Randomness fulfulled');
// (Optional) Verify this randomness offchain.
await verifyRandomnessOffchain(cluster, seed, request.randomness);
alert("Randomness verified");
}