Doubling Down on Open Source Tools and Phasing Out Defender

OpenZeppelin is doubling down on open source development tools by sunsetting Defender and releasing production-ready open source Relayers and Monitor. Discover new features, and our expanded open ...

This new release includes a modular system of contracts for on-chain governance, based on...

Products

Next Generation Smart Contract Governance: We are pleased to announce OpenZeppelin Governor, a...

Announcements Products

Learn about strategies to consider when designing access controls in your system

Security Insights

The more DeFi layers we integrate and compose, the more careful we need to be. As the stack grows,...

Security Insights

Creating dense Subgraphs is one of the most important aspects of indexing on-chain information. In...

Products

PoolTogether is a lossless lottery built with smart contracts using Defender to automate the award...

Products

We are thrilled to announce that OpenZeppelin Contracts will be integrating The Graph’s subgraphs,...

Announcements Security Insights

Our latest speaker series, Secure Development is aimed to help improve security practices for the...

Security Insights Products

The Fei Protocol team asked us to review and audit updates to their protocol smart contracts. This...

Security Audits Solidity Governance

Chainlink’s Keeper Network is a secure way to outsource contract operations to a decentralized...

Products

This release introduces our latest work on governance contracts, gas cost reductions, new helper...

Products

Upgradeable contracts allow us to alter a smart contract to fix a bug, add additional features, or...

Products