{
  "v": 1,
  "requestId": "e1000c8f-1405-4a5c-b634-cb9ff6a0d77f",
  "chainId": 1,
  "window": {
    "toBlock": 26049165,
    "fromBlock": 26048866,
    "toBlockHash": "0x20426a3e4b845b87cd43d6683e11e5637765c8319cd7126a02222ae16a8c65cd"
  },
  "answerType": "uint256",
  "answer": "364032",
  "figure": "364032",
  "definitions": {
    "answer": "The beacon chain epoch number, as an integer.",
    "source": "The Ethereum Foundation's Pectra Mainnet Announcement states activation at epoch 364032.",
    "subject": "Historical protocol fact; the pinned block window timestamps the request and does not alter the answer."
  },
  "recipe": {
    "kind": "panel",
    "source": "https://blog.ethereum.org/2025/04/23/pectra-mainnet"
  },
  "notes": "Read the Ethereum Foundation Pectra Mainnet Announcement, which says Pectra activates on Ethereum mainnet at the start of epoch 364032. This brief specifies panel evidence for an off-chain historical fact, so the source is the reproducible evidence; the pinned execution block range is copied exactly and is not a measurement window for this fact."
}