Blockchain Development

Decentralized Application Development

We build decentralized applications (dApps) that are deployed either on a public blockchain or on a private permissioned enterprise blockchain.

Our team have extensive experience with developing smart contracts and adhering to security best practices. Our code has been audited and approved by leading auditors including ConsenSys Dilligence.

Our CEO is a founding member of the EIP1337 working group and is active in the development of improvements and new standards for the Ethereum ecosystem.

Full Service

Do you need a technical partner who can help develop your product roadmap and turn it into reality? We work with you in an open, collaborative Agile process, delivering working software from the very first sprint. We understand what’s required to bring a new product to market - from validation, through to scaling for millions of users.

About Atchai

Established in 2010 and led by John Griffin and Dr Enrique Munoz de Cote, Atchai is a technology consultancy and development house based in London, UK. We create innovative digital products for Tier-1 VC-startups, enterprise and government. Our clients include organisations such as the Bank of England, NHS, Cabinet Office, and Unilever.

We created Economy.os to simulate and evaluate blockchain-based economies and incentive systems. Our advanced simulations use multi-agent systems and reinforcement learning to model and optimise these complex systems.

Some of our recent blockchain projects

MythX Payments

MythX is a ConsenSys company, building a security tools platform that brings advanced security analysis directly into smart contract development environments and build pipelines.

We have been engaged as a technology partner by Mythril to build the payments system for their premium subscription product. Initially developed to incorporate the MYTH token for payment, we have since moved to a stablecoin based system.

The subscription payments system is now live and available on the MythX site.

Ethereum dapp development


The Akropolis project is unlocking the potential of the informal economy by building a decentralised finance protocol.

After raising £12M from institutional investors in late 2017, we took on the challenge of leading the design and build of the Akropolis MVP. Over an extremely short timeline of three weeks we were able to deliver to market a working product from scratch.

The product we delivered includes a full mobile-first user experience backed by upgradable smart contracts built with solidity and running on the public Ethereum live network.

web conversational ai bot development


The 42 richest people on Earth have more wealth than the poorest 3.7 billion. The GoodDollar experiment is a series of tests with the ultimate purpose of reducing wealth inequality through blockchain technology. Their mission is to build a new, global, open-source cryptocurrency – called GoodDollar – to distribute money using the principles of universal basic income (UBI).

Atchai was engaged to build the first two MVP products for GoodDollar. Though we also delivered a simple dApp for testing, our work focussed primarily around the back-end smart contracts.

The system uses a market maker contract to enable the buying and selling of tokens with no third party exchange. UBI participants are programatically entitled to claim a number of newly minted tokens daily that cause an inflationary effect on the token price.

etherum dapp development studio

Working with cutting edge technology in an emerging sector is a challenge. The team were fantastically agile, professional and reliable throughout the project, we communicated regularly and managed to develop a novel concept into working software within a short timeframe.

I highly recommend working with Atchai for any project that requires a creative approach backed up by strong engineering practices.

Bernhard Mueller