ZigBalthazar

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

contract UserContractFactory {

    mapping(address => address) public userContracts;
    address public storageContractAddr;
    address public owner;

    bytes constant GET_NUMBER_SIG = abi.encodeWithSelector(bytes4(keccak256("getNumber()")));

ZigBalthazar

import { ethers, verifyTypedData, JsonRpcProvider, Wallet, TypedDataField } from "ethers";

interface IProviderAndSigner {
  provider: JsonRpcProvider;
  signer: Wallet;
}

interface IDomain {
  name: string,
  version: string,

ZigBalthazar

pragma solidity ^0.7.6;
pragma abicoder v2;

import "openzeppelin-solidity/contracts/cryptography/ECDSA.sol";

contract Authentication {
    using ECDSA for bytes32;

    string public constant name = "EIP712Authentication";
    string public constant version = "1.0.0";

ZigBalthazar

type UTXO = {
    id: string;
    amount: number;
  };
  
  type Wallet = {
    address: string;
    utxos: UTXO[];
  };