. , Getsubid () Functions are already implemented and available in the JavaScript Code.

Ethereum: Creating & Setting Subids Using VRF Coordinators

Coordinators in a hardhat environment.

Overview of Hardhat Environment

Hardhat is a popular Ethereum development framework that allows us to build and deploy smart contracts on the Ethereum Network. The Ethereum Blockchain, making it ideal for rapid prototyping and development.

Creating & Setting Subids Using VRF Coordinators

To create subids using vrf coordinators in hardhat, we need to:

• Import Necessary Dependencies

• Set up our Network Configuration

• Create aVrfcoordinatorInstance

4.

• Get the Subid Using theGetsubidMethod

Hardhat Deployment Script (Deploy.js)

JavaScript

Const {Network, Ethers} = Require ("@NomicLab/Hardhat");

// Set up our Network Configuration

Const Networks = {

Hardhat: {

Chainid: 1337,

// Add Other Network Configurations As Needed

},

};

// Import the VRF Coordinator Library

Const vrfcoordinatorv2_5mock = Require ("./ VRFCOordinatorV2_5Mock");

Async Function Main () {

Const {getchainid} = Await ethers.getconTrCActory ("Your-Contract-Name");

Const Contractinstince = Await Getchainid ();

// Create a Subscription Instance with VRF Coordinator

Const SubscriptionInstance = Await vrfcoordinatorv2_5mock.createsubscription ({{

chainid: contractinstance.chainid,

Provider: Network.provider,

});

// Set the Subid Using the Createsubscription () Function

await subscriptioninstance.setsubid ("Your-Sub-id");

console.log (await vrfcoordinatorv2_5mock.getsubid ());

// Get the Subid Using the Getsubid Method

Const subid = Await vrfcoordinatorv2_5mock.getsubid ();

console.log (subid);

}

slender ();

`

In We then create a vrfcoordinator instance with VRF coordinator version 2.5 mock.

Next, we create a subscription instance using the Createsubscription () Function and Pass it as an argument to the setsubid Method. This sets the subid for the specified contract.

We

Note:



Replace " Your-Conctract-Name " With the Actual Name of Your Ethereum Contract, and replace `" "" "" "" " This script assumes that you have a vrf coordinator version 2.5 mock implementation available.

Gnosis Gnosis