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Solo Margin Protocol Audit

The dYdX team asked us to review and audit their Solo project. We looked at the code and our results are published…

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Marmo Contracts Audit

The RCN team asked us to review and audit their Marmo contracts. We looked at the code and here are the results.

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Centre Token Minting Contracts Audit

The Circle and Coinbase teams asked us to review and audit the minting contracts of the Centre Token. We looked at the…

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Deconstructing a Solidity Contract — Part IV: Function Wrappers

In the last article, we saw how the function selector acts as a hub or a switch of sorts in our BasicToken.sol contract. It sits at the entry point of a contract and redirects execution to the…

Transaction Permission Layer Protocol v1.0

The Transaction Permission Layer protocol (TPL) is a method for assigning metadata (herein referred to as “attributes”) to Ethereum addresses. These attributes then form the basis for designing…

Compliant Decentralization?: Exploring an Approach to Utility Token Distribution

William Hinman’s recent statements at the Yahoo Finance All Markets Summit provide some guidance for token projects intending to sell tokens as non-securities in the United States.

Deconstructing a Solidity Contract — Part III: The Function Selector

In the previous article, we identified the need to separate a contract’s bytecode into creation-time and runtime code. Having made a deep dive into the creation part, it’s now time to begin...

Towards frictionless upgradeability

ZeppelinOS is all about making the technology of upgradeability into an accessible and frictionless tool for developers. Ideally, we want to enable a developer to create upgradeable instances...

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

Let’s get started by attacking the disassembled gibberish of our contract with our divide-and-conquer lightsaber. As we saw in the introductory article, this disassembled code is very low-level...

Deconstructing a Solidity Contract —Part I: Introduction

You’re on the road, driving fast in your rare, fully restored 1969 Mustang Mach 1. The sunlight shimmers on the all-original, gorgeous plated rims. It’s just you, the road, the desert, and the…

Getting started with ZeppelinOS

Blockchains are immutable, and Ethereum is no exception. Ethereum has a rich smart contracts ecosystem that greatly lowers the barriers to creating new decentralized applications (DApps), governance…

Dharma Audit

The Dharma team asked us to review and audit the smart contracts implementing their protocol. We looked at the code and now publish our results.

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 better understand this post. This second article will explain everything about data management.