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 ...

The UMA Data Verification Mechanism (DVM) is the ultimate source of truth in the oracle and...

Security Audits Solidity Governance oracle

This first security assessment for zkSync 2.0 was prepared by OpenZeppelin, as part of an ongoing...

Security Audits Solidity Rollup

Origin Dollar (OUSD) is an ERC-20 compliant stablecoin backed by USDT, USDC, and DAI. Users can...

Security Audits Solidity Stablecoin

Given the relatively small scope of this audit with respect to the size of the entire project, we...

Security Audits Dex Solidity

The OpenZeppelin security services team audited the crypto-payments project of the Freeverse team....

Security Audits Solidity Payments

The UMA team asked us to review and audit their Across Token and Token Distributor repository. The...

Security Audits Solidity Token

The UMA team asked us to review and audit their Optimistic Governor contract. This aims to allow...

Security Audits Solidity Governance oracle

As Compound's security partner we completed a comprehensive protocol audit. We looked at the code...

Security Audits Solidity Lending

The OpenZeppelin team audited a governance system for OriginProtocol. The contracts allow users to...

Security Audits Solidity Governance

The Freeverse team asked us to review and audit their NFT marketplace. We looked at the code and...

Security Audits Solidity Payments

The Celo team asked us to review and audit Release 7 smart contracts. We looked at the code and now...

Security Audits Solidity Token

The Celo team asked us to review and audit Release 7 smart contracts. We looked at the code and now...

Security Audits Solidity Token