About the Platform

Scalable sharding for smart contracts.

  • Existing blockchains are too slow for real-world applications
  • To fix this, we are improving throughput and lowering latency
  • Distributed ledgers should be usable by "normal" coders
  • We aim for the best possible developer experience
  • We presented our peer-reviewed paper at NDSS 2018
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Parallelising contract execution by sharding gives us linear scalability. Add more shards, get more capacity.


Cross-shard commits. Multi-contract calls fully succeed or fail even when multiple shards are involved.

Low-latency consensus

Our new leaderless consensus protocol provides fast finality for operations within each shard.

Secret Keeping

Zero-knowledge proofs can selectively disclose secrets using Coconut while still providing strong anonymity guarantees.

Our Team

Dave Hrycyszyn


In a 20 year career, Dave has successfully delivered hundreds of software systems. From startups to the world's largest organizations, he's scaled systems to tens of millions of users. He also wrote the book on the open source Scalatra HTTP framework, used by the BBC, NetFlix, and McLaren. Alongside Ramsey, he built and sold a 60-person software consultancy. At Chainspace, he works across business, code, and research activities.

George Danezis


George heads the Information Security Research Group at University College London. He co-designed and prototyped RsCoin, an experimental scalable cryptocurrency for the Bank of England, and has a list of publications longer than a Leonard Cohen song. He did his doctorate at Cambridge under Ross Anderson, followed by a stint at Microsoft Research. George is also a Fellow at the Alan Turing Institute.

Ramsey Khoury


A successful serial entrepreneur, Ramsey provides our business backbone. Previously, Ramsey founded, built up, and took a 60-person software consultancy through to a final sale. Subsequently an angel investor in multiple traditional startups, his interest in the potential of decentralised applications has been stoked over the past two years. He handles investor relations, business strategy, and a million details.

Blaine Cook


Blaine was the original technical director at Twitter. He's co-author of the OAuth (v1) protocol (i.e. "Log in with Facebook", "Log in with Google"), as well as the Webfinger protocol, a decentralised web scale identity system leveraging OpenID.

Klaus Kursawe


Klaus is an expert security consultant on critical infrastructure, including smart devices and energy grids across the globe. He has an encyclopedic knowledge of Byzantine distributed consensus and distributed trust, and has been publishing papers on these subjects since the turn of the millenium.

Alberto Sonnino

Co-founder, researcher

A PhD researcher at UCL, Alberto's research interests include privacy enhancing technologies, distributed ledgers, and secure enclave computations.

Jeremy Letang


Jeremy is the sort of coder who implements RAFT distributed consensus in Rust as a personal challenge, and whose Github repos have descriptions like "C++ reflection framework (for fun)". He's equally comfortable working in Go or Rust, and leads our experiments with Rust-to-WASM.

Mustafa Al-Bassam

Co-founder, researcher

A former LulzSec hacker, Mustafa is now a PhD researcher in computer security at UCL. He made the Forbes 30 Under 30 list in technology for 2016.

Shehar Bano

Co-founder, researcher

Bano is a post-doctoral researcher at UCL. She is a member of IC3, the Centre for Blockchain Technologies, and helps run the London Infosec Group. Made MIT's 2018 Innovators under 35 list.



Tav has been using Golang since forever. He has been building secure, distributed, and anonymous federated systems for almost two decades, starting with the Freenet network.