Building a financial application on Ethereum?

We will be announcing our first wave of protocol users and relayers in 2019, if you would like to build on top of the protocol, please get in touch.

What is the AZTEC protocol?

The AZTEC protocol uses cutting-edge zero-knowledge proofs to enable private transactions on Ethereum.

This enables the logic of transactions to be validated, whilst keeping the values encrypted.

When will AZTEC be ready?

The AZTEC protocol is not theoretical- it is live today on Ethereum Mainnet.

We are currently building a suite of tools to facilite private transactions and interoperability between dApps building Ethereum assets. This is a community-led project on Open Source technology, and we encourage interested parties to get in touch.

How does the AZTEC protocol work?

AZTEC combines homomorphic encryption and range proofs. Homomorphic encryption allows arithmetic checks on encrypted numbers as if they weren’t encrypted.

AZTEC's range proofs ensure that negative numbers (which in a finite field are large positive numbers) cannot subvert the double-spend check.

Finally, AZTEC's commitment scheme is a unique method of encrypting data that enables fast and efficient verification of range proofs. This reduces the gas costs of AZTEC transactions on the Ethereum network.

The AZTEC's trusted setup can be performed via a highly robust form of multiparty computation, where only one person in the protocol must act in good faith for the scheme to be secure.

How much gas does an AZTEC transaction use?

A standard AZTEC zero-knowledge transaction costs between 800,000 - 900,000 gas.

Planned optimisations of the Ethereum protocol EIP#1108 will reduce this gas cost to 300,000 gas or lower.

Why is the AZTEC protocol useful?

AZTEC allows companies like CreditMint to provide financial services with privacy on the public chain. It can also be used by existing digital assets on Ethereum, such as ERC-20 tokens.

More information

AZTEC will be open sourcing the protocol under a permissive license in the coming months as we finalize the structure of the foundation.

Read the whitepaper or check out our source code on the github repo here.

The Team

Tom Pocock


BA & Masters in mathematics from University of Cambridge, Graduate Diploma in Law from City Law School, and CFA Charterholder. Worked at a leading European debt fund.

Dr Zac Williamson


Doctorate in particle physics from Oxford. Former physicist at CERN and T2K Japan. Creator of the AZTEC cryptographic protocol, and winner of global Ethereum dev competition.

Arnaud Schenk

Tech Lead

École42 coding school, Paris. Five years’ experience as a web software engineer, formerly built the tech team at Entrepreneur First in London, before joining EF9 Cohort.

Joe Andrews

Product Lead

BEng Materials Science from Imperial College London, formerly CTO of US startup Radish. Experienced web developer and EF9 Cohort member.

Leila Wang

Senior Engineer

BSc Computer Science from National Taiwan University. Previously at King & Wood and Senior Software Engineer at Joined AZTEC in September 2018.

Tom Waite

Junior Engineer

MSci Physics from Imperial College London. Previously a Research Assistant at Imperial College Center for Cryptocurrency Research. Joined AZTEC in November 2018.

Paul Berg

Blockchain Engineer

Co-founder, Chronos Protocol and creator of ERC-1620 standard. Active contributor to Ethereum and full-stack developer. Formerly EF10 Cohort at Entrepreneur First. Joined AZTEC in January 2019.

George Lewin-Smith

Business Development Analyst

George graduated with a BA in Geography from Oxford in 2018, and completed the Le Wagon full-stack developer course. He joined AZTEC in January 2019 to work on business development and community.

Oana Ciobotaru

Lead Cryptographer

PhD in cryptography from the Max Planck Institute, and Postdoctoral researcher focused on universal composability. Previously Quant Researcher at Winton Group, and then Applied Researcher at ConsenSys R&D arm PegaSys.

We are hiring!

We are hiring for a range of roles, all offering competitive options and equity packages. Join us to build the future railroads of finance.

Directors & Advisors

Joe Lubin


Co-founder of Ethereum. Founder of ConsenSys, the world’s leading blockchain venture studio.

Jeffrey Tarrant


Founder of New York-based Protégé Partners and MOV37, which specializes in emerging investment managers and firms using Data Science, Artificial Intelligence, and Blockchain.

Jim Jagielski


Co-founder of the Apache Software Foundation and recipient of both the O'Reilly Open Source Award and Innovation Luminary Award. He currently works at ConsenSys as their Open Source Chief.