{
  "v": 1,
  "requestId": "4e90d83a-db9f-4b59-a554-76c97160f59c",
  "chainId": 1,
  "window": {
    "toBlock": 26048185,
    "fromBlock": 26047887,
    "toBlockHash": "0x4e56a6dcfef3265a8874b5ee86b0b5e6df4d4bc3cc666e5c442c89638985d5c7"
  },
  "answerType": "uint256",
  "answer": "840000",
  "figure": "840000",
  "definitions": {
    "answer": "Bitcoin mainnet block height, expressed as an unsigned decimal integer.",
    "source": "Bitcoin.org's Halving Countdown halving-history table, read at the URL in recipe.source.",
    "missing": "The source explicitly establishes the fourth-halving block height, so no missing-value convention was used.",
    "subject": "Bitcoin mainnet; the pinned Ethereum window is a timestamp guard and is not used as Bitcoin evidence."
  },
  "recipe": {
    "kind": "panel",
    "source": "https://bitcoin.org/en/halving"
  },
  "notes": "Read Bitcoin.org's Halving Countdown. Its halving-history table lists the fourth halving at block 840,000 with a 3.125 BTC new reward. The panel recipe is required because the brief identifies this as off-chain Bitcoin history; its Ethereum range only pins the request timestamp."
}