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export const signMessage = async (
  chainId: string,
  address: string,
): Promise<StdSignature | undefined> => {
  const anyWindow: any = window;

  if (!anyWindow.getOfflineSigner) {
    throw new Error('Keplr extension is not available');
  }
  const signed = await window.keplr?.signArbitrary(

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How can you execute the same smart contract get function for thousands of users?

We can use multicall.

Makerdao Multicall

https://github.com/mds1/multicall

Indexed Finance Multicall

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Registry

interface IERC6551Registry {
    /// @dev The registry SHALL emit the AccountCreated event upon successful account creation
    event AccountCreated(
        address account,
        address implementation,
        uint256 chainId,
        address tokenContract,

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// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

import {ERC165Checker} from "openzeppelin-contracts/utils/introspection/ERC165Checker.sol";
import {MerkleBase} from "../utils/MerkleBase.sol";
import {MerkleProof} from "openzeppelin-contracts/utils/cryptography/MerkleProof.sol";
import {MinPriorityQueue, Bid} from "../lib/MinPriorityQueue.sol";
import {Minter} from "../modules/Minter.sol";

import {ICryptoPunk} from "../punks/interfaces/ICryptoPunk.sol";

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Digital root is the recursive sum of all the digits in a number.

Given n, take the sum of the digits of n. If that value has more than one digit, continue reducing in this way until a single-digit number is produced. The input will be a non-negative integer.

Examples

    16  -->  1 + 6 = 7
   942  -->  9 + 4 + 2 = 15  -->  1 + 5 = 6

132189 --> 1 + 3 + 2 + 1 + 8 + 9 = 24 --> 2 + 4 = 6

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const book = {
   title:"My Favorite JS Functions",
   author:{
     firstName:"John",
     lastName:"Doe"
   }
}

// (1)

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// get web3
let web3 = await initAccount()

// get contract instance
let main = new web3.eth.Contract(
  JSON_ABI,
  CONTRACT_ADDRESS,
)

// usdc contract instance

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const reverse = (data) => {
  if ( !data || !data.length) {
    return false
  }

  const length = data.length
  const reversed = data.split("").reverse().join("");

  for ( let index = 0; index < length / 2; index ++ )
  {

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TicTacToe

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import React, { useState } from "react";
import { useDebounce } from "use-debounce";

export default function Input() {
  const [text, setText] = useState("Hello");
  const [value] = useDebounce(text, 1000);

  return (
    <div>
      <input