Introducing OpenZeppelin Contracts v5.1

OpenZeppelin Contracts 3.4

OpenZeppelin Contracts 3.4 includes an ERC777 security fix for potential reentrancy issues in...

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Introducing OpenZeppelin Defender

Ship faster with lower risk. Automate your Ethereum operations to deliver high-quality products...

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The State of Smart Contract Upgrades

The State of Smart Contract Upgrades - 2020 edition A survey of the different Ethereum smart...

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OpenZeppelin Upgrades Plugins for Buidler and Truffle

We are releasing two new packages to deploy and manage upgradeable contracts from Buidler and...

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OpenZeppelin Upgrades App for Gnosis Safe

We are rolling out a Gnosis Safe App for managing proxy-based smart contract upgrades! This allows...

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Deep dive into the Minimal Proxy contract

In this deep dive into low-level EVM code, you will learn how to code a Minimal Proxy (EIP 1167)...

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Reentrancy After Istanbul

How to protect your contracts against reentrancy after Ethereum’s Istanbul hard fork.

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Build your app with the Gas Station Network

The Gas Station Network, or GSN for short, is a decentralized solution for solving user onboarding...

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GSN: The Ultimate Ethereum Onboarding Solution

Gas Station Network is an open-source service that allows developers to create unique decentralized...

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Sign it like you mean it: creating and verifying Ethereum signatures

Recently, Zeppelin announced that it had joined the Gas Station Network Alliance, a new group...

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Solidity Hot Reloading Using ZepKit

This post explains how to use ZepKit to enable hot reloading to save time when developing smart...

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Getting started with ZepKit

The ZeppelinOS ZepKit is designed to be a one-stop shop for getting started with developing secure,...

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