{
  "v": 1,
  "requestId": "a6c82401-6feb-4cde-9603-f5732ffc03ca",
  "chainId": 1,
  "window": {
    "toBlock": 26048185,
    "fromBlock": 26047887,
    "toBlockHash": "0x4e56a6dcfef3265a8874b5ee86b0b5e6df4d4bc3cc666e5c442c89638985d5c7"
  },
  "answerType": "uint256",
  "answer": "630000",
  "figure": "630000",
  "definitions": {
    "answer": "The Bitcoin mainnet block height at which the third block-subsidy halving took effect, expressed as an integer block height.",
    "subject": "Bitcoin network history; the Ethereum chain and pinned window serve only as the request timestamp and are not used as the historical source.",
    "halving": "The scheduled subsidy transition from 12.5 BTC to 6.25 BTC per block.",
    "source": "Bitcoin.org's halving-history table identifies the third halving as block 630,000 with a new reward of 6.25 BTC.",
    "missing": "The fact was established from the named public source; no missing-value rule was needed."
  },
  "recipe": {
    "kind": "panel",
    "source": "https://bitcoin.org/en/halving"
  },
  "notes": "Read the Bitcoin.org Halving Countdown public page. Its halving-history table labels the third halving as block 630,000 and the new reward as 6.25 BTC. This panel-evidence answer uses the pinned chain-1 window exactly as supplied, while the requested fact is Bitcoin mainnet history."
}