{
  "v": 1,
  "requestId": "e88649cd-9d5f-4164-b647-f5eb76e6f716",
  "chainId": 1,
  "window": {
    "toBlock": 26049164,
    "fromBlock": 26048865,
    "toBlockHash": "0xed9429f3f55488921ccb2cf50a2b2305c0161234d455b8f6173c10021f5df346"
  },
  "answerType": "uint256",
  "answer": "2015",
  "definitions": {
    "launch": "The first live Ethereum mainnet release, Frontier, marked by the genesis block.",
    "year": "The four-digit UTC calendar year of that launch.",
    "window": "The pinned chain-1 block range timestamps this request; the launch year is a historical fact independent of those blocks."
  },
  "recipe": {
    "kind": "panel",
    "source": "https://blog.ethereum.org/2015/07/30/ethereum-launches"
  },
  "notes": "Read the Ethereum Foundation's July 30, 2015 announcement, which identifies the genesis block as Frontier's inception. The pinned request designates panel evidence for this historical fact, so no on-chain reduction over blocks 26048865 through 26049164 can reproduce the launch year from those blocks alone."
}