Introducing OpenZeppelin Contracts v5.1

The State of Smart Contract Upgrades

The State of Smart Contract Upgrades - 2020 edition A survey of the different Ethereum smart...

Security Insights Products

Build your app with the Gas Station Network

The Gas Station Network, or GSN for short, is a decentralized solution for solving user onboarding...

Announcements Products

Getting the most out of CREATE2

In this post, we’ll go in depth into the CREATE2 opcode and its uses in counterfactual...

Security Insights

Testing real-world contract upgrades

Deploying to production can be a stressful experience, especially if you don’t have a proper suite...

Security Insights Products

State of EVM Packages – End of 2018

Two months ago, we presented the EVM package standard as a means to securely share on-chain...

Security Insights

Toward a secure code ecosystem

This week started off with the finding of malicious code injected into a dependency of a popular...

Security Insights

The transparent proxy pattern

Much has been discussed around proxy patterns and how to best achieve upgradeability in Ethereum...

Products

Exploring upgradeability governance in ZeppelinOS with a Gnosis MultiSig

With the first release of ZeppelinOS two months ago, the key issue we wanted to tackle was...

Products

EthDenver Zeppelin Prize Winners

As we’re wrapping up EthDenver 2018, the #gratitude hashtag falls short to say thanks to all the...

Events

Designing the architecture for your Ethereum application

As you are beginning with Ethereum development, and after going through some of the many excellent...

Security Insights

The Parity Wallet Hack Reloaded

Today we witnessed a possible major attack on the Parity MultiSig contract. This follows a previous...

Security Audits Rust

The Parity Wallet Hack Explained

Today, we witnessed the second largest hack, in terms of ETH stolen, in the history of the Ethereum...

Security Insights