jgarzik

Jeff Garzik (jgarzik) is a notable figure in the early Bitcoin and blockchain ecosystems. A former Bitcoin Core developer and a co-founder of Bloq, he has contributed to Bitcoin’s development infrastructure and later led ventures aimed at expanding blockchain tooling and interoperability. His Bitcointalk profile lists him as an active USA-based member with the signature “Jeff Garzik, Bloq CEO, former bitcoin core dev team; opinions are my own.” (bitcointalk.org)

• Early core contributor to Bitcoin and a participant in the SegWit2x discussions; later served on industry boards and co-founded Bloq. (en.bitcoin.it)
• Public roles include leadership at Bloq and involvement with blockchain infrastructure projects; he has also been associated with Hemi Labs and related initiatives. (coindesk.com)