Introducing OpenZeppelin Contracts v5.1

Towards frictionless upgradeability

ZeppelinOS is all about making the technology of upgradeability into an accessible and frictionless...

Products

Deconstructing a Solidity Contract - Part II: Creation vs. Runtime

Let’s get started by attacking the disassembled gibberish of our contract with our...

Security Insights

Deconstructing a Solidity Smart Contract - Part 1: Introduction

You’re on the road, driving fast in your rare, fully restored 1969 Mustang Mach 1. The sunlight...

Security Insights

Getting started with ZeppelinOS

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

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Dharma Audit

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

Security Audits

Ethereum in Depth, Part 2

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

Security Insights

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

Verifying identity in Venezuela through the TPL

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

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Introducing the Transaction Permission Layer (TPL) Protocol

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

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Announcing the launch of ZeppelinOS

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

Announcements Products

Ethereum in Depth, Part 1

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

Security Insights

Proxy Patterns

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

Products