Orand Code Integration

Randomness Feeding Process

Your application can request the verifiable randomness directly from Orand. Then you can publish the randomness yourself by calling the method publish() (genesis() for the genesis epoch) on smart contract OrandProviderV2. Higher tier of service establishes the ability to submit the randomness from Orand service but the Orochi Network will cover the cost for each randomness.

┌───────────┐         ┌─────┐      ┌──────────────┐
│Application│         │Orand│      │Smart Contract│
└─────┬─────┘         └──┬──┘      └──────┬───────┘
      │                  │                │
      │Request Randomness│                │
      │─────────────────>│                │
      │                  │                │
      │                  │Get latest epoch│
      │                  │───────────────>│
      │                  │                │
      │                  │  Latest epoch  │
      │                  │<───────────────│
      │                  │                │
      │   ECVRF Proof    │                │
      │<─────────────────│                │
      │                  │                │
      │            ECVRF Proof            │
      │──────────────────────────────────>│
┌─────┴─────┐         ┌──┴──┐      ┌──────┴───────┐
│Application│         │Orand│      │Smart Contract│
└───────────┘         └─────┘      └──────────────┘

Request Randomness From Orand

import { Orand } from "@orochi-network/sdk";

(async () => {
  // Create an instance of Orand
  let orandInstance = await Orand.fromRPC(
    {
      user: "YOUR_REGISTERED_USERNAME",
      secretKey: "YOUR_REGISTERED_SECRET",
      url: "ORAND_SERVICE_URL",
      consumerAddress: "YOUR_CONSUMER_ADDRESS",
    },
    "NETWORK_RPC_URL"
  );

  const newEpoch = await orandInstance.newPrivateEpoch();
  console.log(newEpoch);
})();

• ORAND_SERVICE_URL: We will provide you the service URL
• YOUR_REGISTERED_USERNAME: The username that you registered with Orand service, e.g: "Navi"
• YOUR_REGISTERED_SECRET: The random secret key used to authenticate yourself, for instance, 6b1ab607287f5379db8b70bb7515feaa
• YOUR_CONSUMER_ADDRESS: The consumer smart contract address for instance, "0x66681298BBbdf30a0B3Ec98cAbf41AA7669dc201"
• NETWORK_RPC_URL: JSON RPC endpoint of network, All configurations will be load base on ChainId

Note: ChainId is a predefined value, you can check the chain list here.

Submit The Randomness To Your Smart Contract

const wallet = Wallet.fromPhrase(
  "YOUR_WALLET_PASSPHRASE"
  orandInstance.rpcProvider
);

const newEpoch = await orandInstance.newPrivateEpoch();
console.log(newEpoch);
console.log(await orandInstance.publish(newEpoch, wallet));

Don't mind to contact us on Telegram if you need support https://t.me/OrochiNetwork.