Introducing OpenZeppelin Contracts v5.1

Automate Smart Contract Workflows

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

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Building an NFT Merkle Airdrop

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

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OpenZeppelin Contracts 4.1

This new release introduces UUPS proxies as a cheaper alternative to Transparent proxies....

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Workshop Recap: Managing Smart Contract Upgrades

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

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Workshop Recap: Setting Up Access Control for Smart Contracts

Access control—that is, “who is allowed to do this thing”—is incredibly important in the world of...

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Introducing Contracts Wizard

Contracts Wizard is an interface to interactively build a contract out of components from...

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OpenZeppelin Contracts 4.0

Due to the new built-in overflow checks in Solidity 0.8, which mark the end of the `SafeMath` era,...

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Service Monitoring and Emergency Response with Defender

The DeFi space, and recently the NFT space, have continued to see a variety of exploits and even...

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Introducing Defender Sentinels

Today we are announcing the release of a new app, called Sentinels, to help prevent ongoing attacks...

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OpenZeppelin Defender – March 2021 Update

We are excited to bring you many new Defender features this month that add powerful functionality...

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Workshop Recap: Cheap contract deployment through Clones

Clones (minimal proxies) as described in ERC1167, are very small, and cheap to deploy,...

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Workshop Recap: Gasless MetaTransactions with OpenZeppelin Defender

Gasless MetaTransactions with OpenZeppelin Defender. The workshop covers the following: Intro to...

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