{"version":1,"address":"1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa","encoding":"P2PKH (1)","structurally_valid":true,"findings":[{"source":"curated","title":"Genesis Block Coinbase (Satoshi Nakamoto)","detail":"The 50 BTC subsidy from Bitcoin's genesis block. The original coinbase UTXO is structurally unspendable across most Bitcoin Core code paths because the genesis transaction is hard-coded as a special case. The address has received many subsequent donations over the years but has never spent a satoshi.","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":"unspendable-de-facto","detail":"","badge":"tag","badge_style":"light","href":""},{"source":"burns-v2","title":"Provable burn address","detail":"Validated burn address from El Khatib & Legout 2025. Balance 52.9711 BTC across 52,445 transactions. First seen at height 0. Notes: The Genesis block's 50 BTC is unspendable because it lacks a valid input and isn't part of Bitcoin's spendable transaction database.","badge":"burn","badge_style":"dark","href":"/lists/lost-coins"}]}