{
  "v": 1,
  "requestId": "9e1c15f1-f469-4b71-bf37-b034c6994829",
  "chainId": 1,
  "window": {
    "toBlock": 26048184,
    "fromBlock": 26047886,
    "toBlockHash": "0xd02eeba314450d64ca2c9cd486efa4938ecbf71db6d9343ad84668f01fc9a028"
  },
  "answerType": "uint256",
  "answer": "10",
  "figure": "10",
  "definitions": {
    "unit": "Whole BTC; 1 BTC equals 100,000,000 satoshis.",
    "transaction": "The first person-to-person Bitcoin transaction is the transfer in Bitcoin block 170, transaction f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16.",
    "amount": "The amount sent to Hal Finney is the 1,000,000,000-satoshi recipient output (output index 0).",
    "window": "The pinned Ethereum chain and block window timestamp the request; the historical fact is read from Bitcoin sources."
  },
  "recipe": {
    "kind": "panel",
    "source": "https://blockstream.info/api/tx/f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16"
  },
  "notes": "Bitcoin Wiki History (https://en.bitcoin.it/wiki/History) identifies the first Bitcoin transaction as Satoshi Nakamoto to Hal Finney in block 170. I read the Blockstream block-height/170, block transaction list, and transaction API pages. The cited transaction's output index 0 is 1,000,000,000 satoshis; division by 100,000,000 gives 10 BTC. The other output is 4,000,000,000 satoshis of change. This panel-evidence request concerns Bitcoin history; the copied Ethereum window only timestamps it."
}