{
  "v": 1,
  "requestId": "a2750009-7da2-40c2-a9e2-2f0889592315",
  "chainId": 1,
  "window": {
    "toBlock": 26028371,
    "fromBlock": 26021225,
    "toBlockHash": "0x5e63e79b65f3a279f58f5eccb39f03b2beca275e66fa213e359e6bf6d88333b5"
  },
  "answerType": "uint256",
  "answer": "497998000000000000",
  "figure": "497998000000000000",
  "definitions": {
    "collection": "CoinGecko NFT id chimpers: Ethereum ERC-721 0x307af7d28afee82092aa95d35644898311ca5360, name Chimpers, symbol CHIMP. It is the single collection contract; no project or token-id subset is applied; other-chain or legacy collections are excluded.",
    "floor": "Current collection-wide public fixed-price listing floor denominated ETH or WETH, with WETH treated 1:1; excludes bids, trait floors, bundles, non-ETH currencies, last sales, averages and USD. Selected CoinGecko native ETH floor because OpenSea v2 access was unavailable.",
    "units": "CoinGecko floor_price.native_currency 0.497998 ETH converted exactly as displayed decimal: 0.497998 * 10^18 = 497998000000000000 wei. No rounding or averaging.",
    "window": "Blocks 26021225 through 26028371 inclusive are used only for sales corroboration; off-chain listing state was fetched fresh during assessment.",
    "sales": "A sale requires a decoded marketplace fulfillment plus this contract/token, not an ERC-721 Transfer alone. Seaport OrderFulfilled consideration/payment is decoded in WETH (18 decimals), including fee legs; mint, gift, self-transfer and unattributable bundles are excluded."
  },
  "recipe": {
    "kind": "panel",
    "source": "https://api.coingecko.com/api/v3/nfts/chimpers"
  },
  "notes": "Selected floor: CoinGecko GET https://api.coingecko.com/api/v3/nfts/chimpers retrieved 2026-09-21T21:16:34Z (HTTP 200; response cache-control max-age=30). It identifies id chimpers, asset_platform_id ethereum, contract 0x307af7d28afee82092aa95d35644898311ca5360, native_currency ethereum/ETH, total_supply 5555, and floor_price.native_currency 0.497998. The response supplied no last_updated field; its HTTP Date is the freshness timestamp, well under one hour. This is the actual selected-floor source and yields 497998000000000000 wei exactly. Chain identity was independently corroborated at the pinned closing block: rpc.flashbots.net/fast and rpc.mevblocker.io/fast each returned chainId 0x1 and hash 0x5e63e79b65f3a279f58f5eccb39f03b2beca275e66fa213e359e6bf6d88333b5 for block 26028371. A current publicnode eth_call confirms this contract returns name Chimpers, symbol CHIMP (and totalSupply 3948 at call time); the CoinGecko stated 5,555 collection supply, so no token-id/project restriction was inferred.\n\nOpenSea verification: resolved slug chimpers from CoinGecko web_slug, then attempted GET https://api.opensea.io/api/v2/collections/chimpers/stats at 2026-09-21T21:16:34Z: HTTP 401, Missing an API Key. Also attempted the requested listings surface https://api.opensea.io/api/v2/listings/collection/chimpers/all?limit=3 at 2026-09-21T21:16:47Z: HTTP 401, same error. Official fallback https://opensea.io/collection/chimpers was HTTP 200 at that time but rendered collectionBySlug as DelistedCollection and did not provide a verifiable fresh floor. Thus no OpenSea floor/percentage comparison is available; it was not substituted or fabricated.\n\nOn-chain sales check: eth_getLogs for this ERC-721 Transfer topic over the exact inclusive range returned 6 transfers (cross-checked on mevblocker and publicnode). Receipts decoded Seaport OrderFulfilled (0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31): tx 0xbcdbcd84ad69f7e8d15ba47d5ee1c30dc3d54b28fcf3818802ecf8193738537f, block 26024182, token 1276, WETH payment 459000000000000000 wei (0.459); tx 0x17a3c5f10e8a145159c33dc62f085dafdb6daceb63199cb63ca1eff47fdd8132, block 26026174, token 4620, WETH payment 440000000000000000 wei (0.44). The remaining four transfers had no OrderFulfilled marketplace event in their receipts and are not called sales. There were only these two attributable sales, so fewer than three are reported. Their historical prices differ from the 0.497998 ETH current listing floor because sales are completed transactions, not active asks; they were used solely as corroboration."
}