Chaincode Labs exists to support and develop Bitcoin and other peer-to-peer decentralized systems.

The Fast Internet Bitcoin Relay Engine (FIBRE) is a protocol and implementation designed to relay blocks within a network of nodes with almost no delay beyond the speed of light through fiber. It was developed to reduce miner centralization pressures and network-wide stale block rates. FIBRE is maintained by Chaincode engineer Matt Corallo.

The Chaincode Residency is a multi-week program for engineers to develop experience with the Bitcoin protocol and the Bitcoin Core project. Chaincode has hosted two residencies, the first coordinated by Chaincode engineer Matt Corallo in 2016, and the second coordinated by Chaincode engineer John Newbery in 2018.

Reliable fee estimation algorithms are a vital element of Bitcoin usability. Chaincode founder Alex Morcos designed and implemented Bitcoin Core's fee estimation algorithm.

Chaincode has contributed code, design, specification and testing for many of the recent improvements in the Bitcoin protocol and Bitcoin Core implementation. Examples are Compact Blocks and BetterHash, designed and developed by Chaincode Engineer Matt Corallo; Mempool package tracking and limiting and mining transaction selection based on ancestor fee rate(CPFP) designed and implemented by Chaincode founder Suhas Daftuar, and pruning mode, designed and implemented by Chaincode engineers.

Chaincode engineers develop, review, test and maintain the reference Bitcoin implementation.

Alex Morcos was one of the early pioneers of automated trading and co-founded Hudson River Trading in 2002, where he spent 10 years working to make markets more efficient and improve market structure. He discovered his passion for Bitcoin in 2012, and in 2014 he co-founded Chaincode with Suhas. He has enjoyed contributing to Bitcoin Core and learning about the exciting nascent field of cryptocurrency ever since.

Suhas Daftuar co-founded Hudson River Trading LLC in 2002, where he spent over a decade developing HRT into a global trading firm and helping to shape the complex policy debates surrounding technology in financial markets. In 2014, Suhas co-founded Chaincode Labs with Alex to create a place for engineers and scientists to support the development of decentralized digital currencies and further our collective understanding of how such technologies can work.

Matt Corallo is a long-time Bitcoin developer who has been contributing to Bitcoin Core since 2011. Matt helped co-found Blockstream where he co-authored the Sidechains whitepaper and implemented the Elements Sidechain. Matt also built and maintains the Bitcoin FIBRE project, the latest generation of low-latency Bitcoin block relay.

John Newbery worked in telecoms and network software in several different countries before deciding to pursue his passion and work full time on Bitcoin in 2016. He is excited about payment channels, lightning network and micropayments.

Russ Yanofsky is a recent contributor to Bitcoin, previously worked on web search at Google and set-top video software at Videon Central, Inc.

Marco Falke previously contributed to Bitcoin Core as maintainer in his spare time. He moved to New York in 2017 to work full-time on open source software.

James O'Beirne started contributing to Bitcoin Core in 2015 during nights and weekends. Previously he worked as a programmer in automated genetic testing and electronics manufacturing.