Introducing OpenZeppelin Contracts v5.1

Smart Contract Security Guidelines #4: Strategies for Safer Governance systems

This guide focuses on showcasing battle-tested practices and recommended patterns to implement...

Products

Ribbon Finance Audit

The Ribbon Finance team asked us to review and audit their Theta Vault and Delta Vault smart...

Security Audits

Smart Contract Security Guidelines #3: The Dangers of Price Oracles

This guide focuses on showcasing the architecture, roles and subtleties of most popular price...

Products

Protect Your Users With Smart Contract Timelocks

Learn how to use OpenZeppelin’s Defender to set up and deploy timelocks.

Products

Celo Contracts Audit Release 5

In another round of auditing, the cLabs team asked OpenZeppelin to review and audit recent changes...

Security Audits

Beta Finance Audit

The Beta Finance team asked us to review and audit some of their protocol smart contracts. We...

Security Audits

OpenZeppelin Contracts 4.3

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

Products

Introducing OpenZeppelin Governor

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

Announcements Products

Smart Contract Security Guidelines #2: Strategies for Secure Access Controls

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

Security Insights

Smart Contract Security Guidelines #1

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

Security Insights

Indexing Smart Contracts with OpenZeppelin Subgraphs & The Graph

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

Products

How PoolTogether Automates Operations Using OpenZeppelin Defender

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

Products