A library for secure smart contract development. Build on a solid foundation of community-vetted code. Implementations of standards like ERC20 and ERC721.

OpenZeppelin Contracts helps you minimize risk by using battle-tested libraries of smart contracts for Ethereum and other EVM blockchains. It includes the most ...

OpenZeppelin Contracts features a stable API, which means your contracts won't break unexpectedly when upgrading to a newer minor version. Usage. Extending Contracts · ERC20 · ERC721 · Utilities

Build and operate with OpenZeppelin's open-source tools and Defender Cloud Services across 30+ networks. Secure your code with our smart contracts audit. OpenZeppelin Contracts · Contracts · Contracts Wizard · OpenZeppelin Defender

OpenZeppelin Contracts is a library for secure smart contract development. - openzeppelin-contracts/contracts/token/ERC20/ERC20.sol at master ...

An interactive smart contract generator based on OpenZeppelin Contracts.

Use the interactive generator below to bootstrap your contract and learn about the components offered in OpenZeppelin Contracts.

In these guides we will show how to develop, test and deploy smart contracts using Hardhat, and we cover its most common use with ethers.js.

Learn more about known vulnerabilities in the @openzeppelin/contracts package. Secure Smart Contract library for Solidity.

Using Contracts, we can easily create our own ERC20 token contract, which will be used to track Gold (GLD), an internal currency in a hypothetical game. Here's ... Creating ERC20 Supply · Tokens · ERC721 · ERC 20