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Bitcoin Core developerMaturation✓ Verified
Pieter Wuille
Author of much of modern Bitcoin's cryptography.
Known as pwuille, Pieter WuilleActive Jan 2011 →
Why they matter
If Satoshi wrote the first draft, developers like Wuille wrote the durable one. Much of what makes today's Bitcoin fast and safe is his work.
Profile
One of the most prolific Bitcoin Core developers, contributing from 2011 onward — author of BIPs behind Segregated Witness and Taproot, and of libsecp256k1, the optimized cryptography library Bitcoin now runs on.