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Jeff Garzik
One of the first contributors to Bitcoin Core.
Known as jgarzik, Jeff GarzikActive Jul 2010 →
Why they matter
Garzik brought serious open-source engineering discipline to a young codebase, part of the small group that kept the protocol stable as it grew beyond its creator.
Profile
Linux kernel veteran who became one of the earliest Bitcoin Core contributors in 2010, working on the reference client's reliability and tooling during the period when Satoshi was stepping back.