{"version":1,"address":"12cbQLTFMXRnSzktFkuoG3eHoMeFtpTu3S","encoding":"P2PKH (1)","structurally_valid":true,"findings":[{"source":"curated","title":"Block 9 Coinbase (Satoshi Nakamoto, first Bitcoin spend)","detail":"The coinbase output of block 9, mined by Satoshi Nakamoto on 2009-01-09 (six days after genesis). This is the address Satoshi spent FROM in block 170, sending 10 BTC to Hal Finney, the first ever non-coinbase Bitcoin transaction. Unlike the genesis coinbase, this output IS spendable and the 40 remaining BTC has stayed there since. Confidence 1.0 because the attribution is anchored by Finney's own contemporaneous account, not just the Patoshi heuristic.","badge":"label","badge_style":"primary","href":"/sources/curated"},{"source":"label-tag","title":"satoshi","detail":"","badge":"tag","badge_style":"light","href":""},{"source":"label-tag","title":"history","detail":"","badge":"tag","badge_style":"light","href":""},{"source":"label-tag","title":"lore","detail":"","badge":"tag","badge_style":"light","href":""},{"source":"label-tag","title":"patoshi-pattern","detail":"","badge":"tag","badge_style":"light","href":""},{"source":"label-tag","title":"block-9","detail":"","badge":"tag","badge_style":"light","href":""},{"source":"label-tag","title":"satoshi-mined","detail":"","badge":"tag","badge_style":"light","href":""},{"source":"label-tag","title":"first-spend","detail":"","badge":"tag","badge_style":"light","href":""},{"source":"patoshi","title":"Patoshi-pattern block #9 (likely Satoshi)","detail":"Coinbase output of Bitcoin block #9, mined in 2009-2010 by what Sergio Demian Lerner's ExtraNonce-slope analysis identifies as a single dominant early miner widely believed to be Satoshi Nakamoto. The 50 BTC reward at this address has not moved. Heuristic attribution; cross-validated by multiple researchers but not cryptographically proven. Last synced 2026-05-12T22:09:20.697574+00:00.","badge":"satoshi-era","badge_style":"info","href":"/sources/patoshi"}]}