openzeppelin-contracts VS ethereumbook

// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.20; import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v5.0.0/contracts/token/ERC20/ERC20.sol"; interface Sfs {     function register(address _recipient) external returns (uint256 tokenId); } contract ModeToken is ERC20 {     address feeReceiver = msg.sender;     constructor() ERC20("ModeTokenSFSTest", "SFST2") { //Example amount to mint our ERC20         _mint(msg.sender, 1000 10 * 18);   // This is the SFS contract address on testnet Sfs sfsContract = Sfs(0xBBd707815a7F7eb6897C7686274AFabd7B579Ff6); //Registers this contract and assigns the NFT //to the deployer of this contract sfsContract.register(msg.sender);     } }

Lets look the events of Open Zeppelin’s ERC20 token contract:

ERC-777 is difficult to implement properly, due to its susceptibility to different forms of attack(opens in a new tab). It is recommended to use ERC-20 instead. This page remains as a historical archive.

Check out rust-bitcoin, or go read the free online version of Mastering Ethereum.

Mastering Ethereum

I got my information by reading books like Grokking Bitcoin, Mastering Ethereum. Another good source would be reading white papers.

Not as fun as crypto zombies but this is a good place to start: Mastering Ethereum https://github.com/ethereumbook/ethereumbook

The book itself can be read in digital format on github: https://github.com/ethereumbook/ethereumbook

I'll add that although a bit outdated, you can read Mastering Ethereum for free online https://github.com/ethereumbook/ethereumbook

There is Mastering Ethereum and Mastering Bitcoin by Andreas M. Antonopoulos for free on GitHub. You can also buy the paper version if you prefer.

Solidity documentation Mastering Ethereum