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Early developer · Satoshi correspondentHandoff✓ Verified
Mike Hearn
Exchanged emails with Satoshi about Bitcoin's future.
Known as Mike HearnActive Apr 2009 →
Why they matter
Hearn preserved and published some of the last substantive emails Satoshi sent, including remarks on scaling and "I've moved on to other things," making him a key custodian of the historical record.
Profile
Ex-Google engineer who corresponded with Satoshi in 2009–2011 about scalability, payment channels and long-term design. He went on to build bitcoinj and early Bitcoin applications before publicly leaving the project in 2016.