{
  "v": 1,
  "requestId": "8df46c63-ca16-453e-b093-04a022d23258",
  "chainId": 1,
  "window": {
    "toBlock": 26049165,
    "fromBlock": 26048866,
    "toBlockHash": "0x20426a3e4b845b87cd43d6683e11e5637765c8319cd7126a02222ae16a8c65cd"
  },
  "answerType": "uint256",
  "answer": "7280000",
  "figure": "7280000",
  "definitions": {
    "answer": "The first Ethereum mainnet block at which the Constantinople and Petersburg protocol rules activated, represented as an unsigned decimal block number.",
    "source": "EIP-6953's Ethereum mainnet activation table, which lists both Constantinople and Petersburg at block 7280000.",
    "subject": "This is a historical Ethereum protocol fact; the pinned chain and window are request metadata and do not alter the activation block.",
    "missing": "The fact was established from the cited source, so no missing-fact fallback was used."
  },
  "recipe": {
    "kind": "panel",
    "source": "https://eips.ethereum.org/EIPS/eip-6953"
  },
  "notes": "Read the cited EIP's Ethereum mainnet activation table. It gives Constantinople and Petersburg the same activation block, 7280000. This request declares panel evidence, so the panel recipe names that public EIP; its pinned 26048866-26049165 range is copied exactly as required metadata rather than a chain-derived input to this historical fact."
}