The token is ERC721 by OpenZeppelin I'm trying to add USDC payments to my Smart Contract, but I'm having problems. This is my function to accept token.. but tra
I want to connect custom RPC with WalletConnectProvider. But I keep getting an error of Uncaught Error: PollingBlockTracker - encountered and error. Here below
I want to send a token from one wallet to another using web3.js and spl-token. To send it I have to create an object named Token, one of the parameters of the c
I would like to accept donations from visitors, I only want an specific token with pre set amount and only people with metamask. if (typeof window.ethereum !==
Every time when I try to install Truffle on my PC Windows 10 it's showing npm error install latest verion of vs code and many more things how do I tackle it ?
I'm trying to consume a function from a smart contract using ethers.js. The function retrieve the info of a user logged before (with the help of other function)
I'm using Ethers.js to allow users to connect their Metamask wallets to my app. Here's the code that I have: import { ethers } from "ethers" async function con
I'm trying to encrypt some data using MetaMask's public key for encryption (https://docs.metamask.io/guide/rpc-api.html#unrestricted-methods). However, on page
how can I get the token details like name, symbol, and decimals details using Nodejs and web3js
I have a problem using Web3Modal, the connect panel doesn't show the metamask provider. Here is the code: const providerOptions = { injected: {
I'm trying to swap tokens with web3py using the swapExactETHForTokensSupportingFeeOnTransferTokens function, with some tokens it works perfectly, in others I ge
I'm trying to invoke the following solidity function from ethersjs (it takes another contract as argument): function getReservesData(IPoolAddressesProvider prov
I am getting this error: Error: Returned values aren't valid, did it run Out of Gas? You might also see this error if you are not using the correct ABI for the
I am currently using a public RPC URL to interact with smart contracts on a Ethereum-forked blockchain. I would like to understand if there are any limitations
When I type a wallet address and press the Save button I want to show a Metamask sign in popup to that wallet. for now, It's just randomly connects with the sel
i have issue on web3.eth.defaultAccount = web3.eth.getAccounts(); below is the code. it said Uncaught (in promise) TypeError: Cannot read properties of undefine
I would like to send a transaction to the binance smart chain (BSC)that will buy an NFT for a crypto integrated game. I've looked at their contract to figure ou
Good day everyone, I am working on a lottery smart contract. I am currently done with the remix VM tests and proceeded with the unit tests with JavaScript. The
I built a test solidity pure function to display a greeting message. It only returns a string "Hello User". Here is the contract code: //SPDX-License-Identifie
I want to automate my staking on The Sandbox. For that I need in the first step to interact with the mSand-Matic Pool Contract. It is this one: https://polygons