Domain Ownership Verifier on Ethereum Sepolia

Over the past few days, I completed my first Web3 project: a decentralized domain ownership verification tool built on the Ethereum Sepolia testnet. The project allows users to verify that they own a domain name by connecting their Ethereum wallet and uploading a signed proof to their website.

The project is now live at: https://web3-verifier.netlify.app/

🚀 Project Goals

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

contract DomainVerifier {
    mapping(address => string[]) public domains;

    function verifyDomain(string calldata domain) external {
        require(bytes(domain).length > 0, "Domain cannot be empty");
        for (uint i = 0; i < domains[msg.sender].length; i++) {
            require(keccak256(bytes(domains[msg.sender][i])) != keccak256(bytes(domain)), "Domain already exists");
        }
        domains[msg.sender].push(domain);
    }

    function getDomains(address owner) external view returns (string[] memory) {
        return domains[owner];
    }

    function removeDomain(string calldata domain) external {
        string[] storage list = domains[msg.sender];
        uint indexToRemove = list.length;

        for (uint i = 0; i < list.length; i++) {
            if (keccak256(bytes(list[i])) == keccak256(bytes(domain))) {
                indexToRemove = i;
                break;
            }
        }

        require(indexToRemove < list.length, "Domain not found");
        list[indexToRemove] = list[list.length - 1];
        list.pop();
    }
}

💻 Frontend Stack