{
  "v": 1,
  "requestId": "f07316c1-3d96-4b7f-941a-a7b2196b021b",
  "chainId": 1,
  "window": {
    "toBlock": 26048185,
    "fromBlock": 26047887,
    "toBlockHash": "0x4e56a6dcfef3265a8874b5ee86b0b5e6df4d4bc3cc666e5c442c89638985d5c7"
  },
  "answerType": "uint256",
  "answer": "2016",
  "figure": "2016",
  "definitions": {
    "answer": "2016, the number of blocks in a Bitcoin difficulty adjustment period",
    "source": "https://developer.bitcoin.org/devguide/block_chain.html - the Bitcoin Developer Guide states that Bitcoin adjusts its difficulty target every 2016 blocks (approximately every two weeks, targeting a 10-minute block interval)",
    "subject": "This is a fact about the Bitcoin network's protocol rules, fixed since Bitcoin's original implementation; it is not derived from the pinned Ethereum block window, which only timestamps the request"
  },
  "recipe": {
    "kind": "panel",
    "source": "https://developer.bitcoin.org/devguide/block_chain.html"
  },
  "notes": "This is a panel/off-chain fact question (evidence: panel). Bitcoin's consensus rules adjust the proof-of-work difficulty every 2016 blocks, as specified in the original Bitcoin protocol and documented in the Bitcoin Developer Guide (developer.bitcoin.org) and the Bitcoin Wiki (en.bitcoin.it/wiki/Difficulty). This interval, combined with the 10-minute target block time, aims for a roughly two-week adjustment period. No chain scan was performed since this is not a chain-derived figure; the pinned chain 1 window only timestamps the request per the brief's own definitions."
}