This guide focuses on showcasing the architecture, roles and subtleties of most popular price oracles in Ethereum, ways to safely integrate them with defensive programming practices.

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

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

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

Creating dense Subgraphs is one of the most important aspects of indexing on-chain information. In this workshop we show you how with OpenZeppelin Subgraphs

PoolTogether is a lossless lottery built with smart contracts using Defender to automate the award cycle process and monitor the LINK balance. 

Chainlink’s Keeper Network is a secure way to outsource contract operations to a decentralized network of professional DevOps for critical functions

Upgradeable contracts allow us to alter a smart contract to fix a bug, add additional features, or simply to change the rules enforced by it. Smart contract upgrades can be managed using OpenZeppelin Defender.

Upgradeable contracts allow us to alter a smart contract to fix a bug, add additional features, or simply to change the rules enforced by it. Smart contract upgrades can be managed using OpenZeppelin Defender.

Upgradeable contracts allow us to alter a smart contract to fix a bug, add additional features, or simply to change the rules enforced by it. Smart contract upgrades can be managed using OpenZeppelin Defender.