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 ...

Blockchains are immutable, and Ethereum is no exception. Ethereum has a rich smart contracts...

Products

The Dharma team asked us to review and audit the smart contracts implementing their protocol. We...

Security Audits

Welcome to the second part of this guide. If you haven’t read part 1, I highly recommend it to...

Security Insights

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

Products

Venezuelans are at the heart of the Americas’ worst-ever refugee crisis, most of them unable to...

Products

Current blockchain protocols lack an effective governance mechanism that ensures transactions...

Products

Today we’re excited to announce the first mainnet release of ZeppelinOS, a platform for developing,...

Announcements Products

Welcome to the first part of a two-posts series aimed at software developers looking to understand...

Security Insights

One of the biggest advantages of Ethereum is that every transaction of moving funds, every contract...

Products

During the last months we've been designing and developing a prototype of the zeppelin_os Kernel....

Products

On 2017 we saw a mind-blowing number of crowdsales and ICOs running in the Ethereum blockchain....

Security Insights

We reviewed and audited the US dollar contracts, from the US Federal Reserve team, for our own...

Security Audits