skill:oracle-assess
Answer this question about chain 1 over blocks 26021228 to 26028374, exactly as .imd/reads/oracle.json pins it: What is the current listing floor price of Hashmasks on Ethereum mainnet, in wei (1 ETH = 10^18 wei)? Identify the exact collection from CoinGecko NFT id hashmasks; verify its mainnet contract and any project/token-id restrictions. Independently attempt BOTH CoinGecko NFT API and OpenSea v2 collection stats/listings APIs. Cross-check the latest up to 3 sales in the pinned 24-hour block window via transaction receipts and decoded marketplace sale events when possible. Follow the definitions, report API access failures and source timestamps, and explain discrepancies. Do not substitute a last sale price for the listing floor or fabricate unavailable data. Return a panel recipe and cite the actual floor source URL; include both API attempts and onchain evidence in notes. Write only artifacts/answer.json: the typed answer (uint256) and the recipe that reproduces it.
VERDICT: paths and tree verified; no suite was run for this kind of work
Created [artifacts/answer.json](artifacts/answer.json): **88999800000000000 wei**, sourced from [OpenSea stats](https://api.opensea.io/api/v2/collections/hashmasks/stats). Checker prints `ok`. Both API attempts and decoded sales are documented. The RPC-only criterion cannot be met for an offchain listing floor; this limitation is recorded.
Completed [artifacts/answer.json](/home/worker/.imd/seat2/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Selected floor: `88999800000000000` wei. Validation: `check-answer.mjs` prints `ok`.
Done — `artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. **Answer: 88999800000000000 wei (0.0889998 ETH)** — the current Hashmasks listing floor, taken from OpenSea v2 collection stats per the brief's floorRule. How it was established: - **Collection verified**: CoinGecko id `hashmasks` resolves to contract `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on Ethereum, and OpenSea's collection endpoint independently confirms slug `hashmasks` → that same contract. It's a dedicated ERC-721, so no token-id/project filters apply. - **Both API attempts succeeded** (2026-09-21 UTC): CoinGecko `/api/v3/nfts/hashmasks` → 200, floor 0.089 ETH; OpenSea `/api/v2/collections/hashmasks/stats` → 200, `total.floor_price` 0.0889998 with symbol ETH. Difference is 0.000225% — just CoinGecko rounding to 3 decimals. Two OpenSea endpoints that require an API key (contract-resolution and best-listings) returned 401 and are reported as failures in the notes; no credentials were available. - **Onchain cross-check over the pinned window** (blocks 26021228–26028374; chainId and pinned closing hash confirmed on flashbots and publicnode): 47 Transfer logs on the contract, of which the 3 latest true sales were decoded from Seaport `OrderFulfilled` receipts — token 6219 at 0.0798 WETH (block 26027776), a 5-token sweep totaling 0.3994959 ETH across 5 individually-priced orders (block 26026992), and token 2764 at 0.0721 WETH (block 26022224). All other transfers had no marketplace sale event and were excluded. - **Discrepancy explained**: recent sales sit below the floor because they were accepted WETH bids plus a sweep that consumed the cheapest listings — the metric asks for the listing floor, not sales, so the floor was not inferred from them. The recipe is `{kind: "panel", source: "https://api.opensea.io/api/v2/collections/hashmasks/stats"}`, which starts with an allowed guard source. The file is left untracked for the daemon to collect, and no config files were touched.
Created [artifacts/answer.json](/root/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Validated successfully: `check-answer.mjs` prints `ok`.
Completed [artifacts/answer.json](/home/identitymd/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Selected floor: `88999800000000000` wei. Validation passed: `ok`.
Completed [artifacts/answer.json](artifacts/answer.json) with the OpenSea floor of `88999800000000000` wei. Validation passed: `check-answer.mjs` printed `ok`.
Created [artifacts/answer.json](artifacts/answer.json) with **88999800000000000 wei** (0.0889998 ETH), both API attempts, and decoded sale evidence. Validation printed `ok`. The answer notes that public RPC alone cannot reproduce an offchain listing floor.
Completed [artifacts/answer.json](/home/imd/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Validator result: `ok`.
Completed [artifacts/answer.json](/home/imd-worker2/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Answer: `88999800000000000` wei. Local validator result: `ok`.
Completed [artifacts/answer.json](/home/imd-worker/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Selected floor: `88999800000000000` wei. Validator result: `ok`.
Created [artifacts/answer.json](/Users/sagark/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). It contains the selected OpenSea floor: `88999800000000000` wei. Local validator result: `ok`.
Created and validated [artifacts/answer.json](</home/imd2/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json>). The checker prints `ok`.
Completed [artifacts/answer.json](/home/imd/.identitymd-2/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Validated with the supplied checker: `ok`.
Done. `artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. **Answer: `88999800000000000` wei** (0.0889998 ETH), recipe `{kind: "panel", source: "https://api.opensea.io/api/v2/collections/hashmasks/stats"}`. What I did: **Scope verified.** CoinGecko `hashmasks` → contract `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on ethereum. The OpenSea slug was resolved from the collection record rather than assumed: `/api/v2/collections/hashmasks` returns exactly that one contract on ethereum, safelist `verified`. Single contract, so no token-id or project filter. **Both providers attempted, live at 2026-09-21T21:11:00Z.** - OpenSea `/api/v2/collections/hashmasks/stats` — HTTP 200, keyless, `last-modified 21:10:30Z`: `total.floor_price 0.0889998`, symbol `ETH`. - CoinGecko `/api/v3/nfts/hashmasks` — HTTP 200: `floor_price.native_currency 0.089`, native currency `ethereum`. +0.00022% vs OpenSea — CoinGecko rounding to 3 dp, well under the 1% investigate threshold. Not averaged; the request's `floorRule` prefers the OpenSea figure, which is also the more precise one. - Failures reported, not papered over: OpenSea `/listings/collection/hashmasks/best` and `/chain/ethereum/contract/{addr}` both returned **HTTP 401 "Missing an API Key"**. No credential exists in this environment, so the per-listing cheapest ask could not be read directly. **Onchain cross-check** over exactly 26021228–26028374 (pinned closing hash confirmed on flashbots; opening block 2026-09-20T20:50:23Z, closing 2026-09-21T20:50:23Z — exactly 24 h). 47 Transfer logs in 41 txs; every receipt scanned for Seaport/Blur/LooksRare/X2Y2/PunkBought. Three latest true sales decoded from Seaport 1.6 `OrderFulfilled` (total consideration, fees included): token 6219 at 0.080598 WETH (b26027776), a five-order sweep at ~0.0799 ETH each summing exactly to the tx value 0.3994959 ETH (b26026992), and token 2764 at 0.0746235 WETH (b26022224). The 30 non-sale transfers — mostly same-token round trips through `0x958c4118…`, escrow/loan shaped — were excluded; a bare ERC-721 Transfer was never counted as a sale. The sales sit below the ask, as expected once the cheapest listings are cleared; no sale price was substituted for the floor.
Created [artifacts/answer.json](/home/imd/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Selected floor: `88999800000000000` wei. Validation passed: `check-answer.mjs` printed `ok`.
Created [artifacts/answer.json](/root/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). It validates successfully with the provided checker (`ok`).
Created [artifacts/answer.json](/Users/git/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Validated successfully: `check-answer.mjs` prints `ok`.
Completed [artifacts/answer.json](/home/worker/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). It reports the selected OpenSea ETH floor as `88999800000000000` wei, documents both API attempts and on-chain sale evidence, and passes the supplied validator (`ok`).
Created [artifacts/answer.json](/home/seat2/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Answer: `88999800000000000` wei. Validator passes (`ok`).
Created and validated [artifacts/answer.json](/Users/zhuminquan/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). The checker reports `ok`.
Check passes with `ok`. **Summary:** Answered the Hashmasks listing-floor question as a panel recipe. Both CoinGecko (`nfts/hashmasks`: 0.089 ETH) and OpenSea v2 stats (`total.floor_price`: 0.0889998 ETH) succeeded live; per the request's `floorRule`, OpenSea's figure is authoritative (contract `0xc2c747e0f7004f9e8817db2ca4997657a7746928` verified, no token-id/project restrictions), giving **88999800000000000 wei**. Cross-checked onchain via `scan.mjs` over the pinned block window (pin/chainId confirmed): 47 Transfer events across 33 blocks corroborate active trading consistent with both providers' 24h sale counts; full Seaport sale-price decoding wasn't completed within budget, disclosed as a limitation rather than substituted. `artifacts/answer.json` passes `check-answer.mjs`.
Checker prints `ok`. `artifacts/answer.json` is complete: Hashmasks floor = 88999800000000000 wei (0.0889998 ETH), sourced from OpenSea's best-listing API (matching stats floor, cross-checked against CoinGecko's rounded 0.089 ETH), with onchain corroboration of a decoded Seaport sale in the pinned block window.
Check passes. Summary: - Verified Hashmasks (CoinGecko id `hashmasks`) contract `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on chain 1, whole-collection floor, no token-id restrictions. - CoinGecko NFT API and OpenSea v2 collection stats both succeeded fresh: 0.089 ETH and 0.0889998 ETH respectively (0.000225% apart) — used OpenSea per the floor-rule preference. - Floor = 0.0889998 ETH = **88999800000000000 wei**. - Cross-checked onchain: pulled Transfer logs for the contract across the pinned block window via public RPC (chain id and closing block hash confirmed), identified the 3 latest txs, but the marketplace contract they hit couldn't be decoded with a known ABI in this session — reported as an explicit limitation rather than treated as a floor. - `artifacts/answer.json` written and passes `check-answer.mjs` (`ok`).
Created [artifacts/answer.json](/home/imd3/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Selected floor: `88999800000000000` wei. Validator result: `ok`.
Check passes with `ok`. Answer: Hashmasks current listing floor = 88999800000000000 wei (0.0889998 ETH, from OpenSea v2 collection stats, cross-checked against CoinGecko's 0.089 ETH), written to `artifacts/answer.json` with full source/timestamp/discrepancy notes and onchain block-hash verification.
Taylor — done. `artifacts/answer.json` reports the Hashmasks floor as **88999800000000000 wei** (0.0889998 ETH), sourced from OpenSea's `/collections/hashmasks/stats` (preferred per floorRule since it's ETH-denominated and contract-verified), cross-checked against CoinGecko's 0.089 ETH (0.0002% diff, no discrepancy). Contract `0xc2c747e0f7004f9e8817db2ca4997657a7746928` confirmed via both APIs; onchain pin verified and 47 Transfer logs scanned over the window as supporting evidence (receipt-level sale decoding wasn't completed — flagged as a limitation in notes, not substituted for the floor). `check-answer.mjs` prints `ok`.
I wrote `artifacts/answer.json` with a floor of 88999800000000000 wei (0.0889998 ETH). `check-answer.mjs` prints `ok`. The latest-3-sales cross-check the request asked for is not done: I did not decode any sales from the pinned blocks, and I did not run `scan.mjs` or confirm the pinned block hash on an RPC. - **OpenSea:** `https://api.opensea.io/api/v2/collections/hashmasks/stats` returned HTTP 200 with `total.floor_price` 0.0889998 in ETH. I used this figure, following the request's floor rule. - **CoinGecko:** `https://api.coingecko.com/api/v3/nfts/hashmasks` returned HTTP 200 with a floor of 0.089 ETH. I saw no `last_updated` field, so its source time is not reported. It differs from OpenSea by about 0.0002%, well under the 1% investigation threshold. - **Collection:** contract `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on Ethereum, from the CoinGecko response. The OpenSea collection lists Ethereum as its chain. I did not check the OpenSea contract address against CoinGecko's, so the match is inferred. - **Retrieval time:** both APIs were fetched at 2026-09-21T21:09Z. I used no API keys. The answer uses the `panel` recipe with the OpenSea stats URL as its source. The notes in the answer file say the sales check was not performed.
I wrote `artifacts/answer.json` with a floor of **88999800000000000 wei** (0.0889998 ETH). `check-answer.mjs` prints `ok` for it. The sales cross-check the task asked for was not done. - **Floor source:** OpenSea `GET https://api.opensea.io/api/v2/collections/hashmasks/stats` returned HTTP 200 without a key. `total.floor_price` is 0.0889998 ETH, retrieved 2026-09-21T21:09Z. I used it because the floor rule prefers OpenSea when the symbol is ETH and the collection scope matches. - **CoinGecko check:** `GET https://api.coingecko.com/api/v3/nfts/hashmasks` also returned 200. It gives 0.089 ETH, contract `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on Ethereum, with no `last_updated` field. That differs from OpenSea by 0.0022%, which is rounding. - **Sales cross-check:** the OpenSea sale-events endpoint returned HTTP 401 (missing API key). I did not decode Seaport `OrderFulfilled` receipts from RPC, so the answer lists no sales transactions, blocks, token ids or prices. The notes say this. - **Discrepancy noted in the notes:** the 24-hour sales counts differ, 11 on OpenSea against 16 on CoinGecko. - **Recipe:** a `panel` recipe with the OpenSea stats URL as its source. I did not run any scan of the pinned block range.
I wrote `artifacts/answer.json` with a floor of 88999800000000000 wei (0.0889998 ETH), and `check-answer.mjs` prints `ok`. I did not decode any onchain sales, and I did not verify OpenSea's link to the Hashmasks contract beyond the slug returning stats. - **Floor source:** OpenSea `https://api.opensea.io/api/v2/collections/hashmasks/stats` returned HTTP 200 without a key. It reported `total.floor_price` 0.0889998 ETH, fetched 2026-09-21T21:09Z. It supplied no `last_updated` timestamp. I used it because the definitions prefer OpenSea when the symbol is ETH, and the recipe is a `panel` recipe citing that URL. - **CoinGecko cross-check:** `https://api.coingecko.com/api/v3/nfts/hashmasks` returned HTTP 200 with a floor of 0.089 ETH, about 0.0002% apart, well inside the 1% threshold. It confirms the contract `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on Ethereum. CoinGecko showed market-cap rank 54 at fetch, where the brief says ETH-only rank 37. - **Sales:** I did not decode Seaport `OrderFulfilled` events or receipts for blocks 26021228–26028374. The notes state this limitation and report no sales. OpenSea's one-day stats show 11 sales, and the floor is not derived from any sale.
I wrote `artifacts/answer.json` with a floor of **88999800000000000 wei** (0.0889998 ETH), and `check-answer.mjs` prints `ok`. I did not do the onchain sales cross-check, so the answer rests on the two API reads alone. - **OpenSea:** `https://api.opensea.io/api/v2/collections/hashmasks/stats` returned HTTP 200 without a key, with `total.floor_price` 0.0889998 ETH. The response has no source timestamp. I fetched it at 2026-09-21T21:09Z, so it is fresh. This is the floor I used, as the request's floor rule prefers OpenSea when the symbol is ETH. - **CoinGecko:** `https://api.coingecko.com/api/v3/nfts/hashmasks` returned HTTP 200 with a floor of 0.089 ETH. The contract is `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on Ethereum. The two floors differ by about 0.0002% because CoinGecko rounds to three decimals, so there is no discrepancy to investigate. - **Sales:** OpenSea's sales-events endpoint returned HTTP 401 (API key required), so I found no sales to decode from receipts for the pinned blocks. The notes state this. I did not use a sale price as the floor. - **Recipe:** the kind is `panel`, with `https://api.opensea.io/api/v2/collections/hashmasks/stats` as its source. The floor is an offchain listing price, so it is panel evidence and cannot be reproduced from RPC data.
I wrote `artifacts/answer.json` with a floor of **88999800000000000 wei** (0.0889998 ETH), and `check-answer.mjs` prints `ok`. I did not do the onchain sales cross-check the task asked for. - **OpenSea:** `GET https://api.opensea.io/api/v2/collections/hashmasks/stats` returned 200 without a key at 2026-09-21T21:09Z. `total.floor_price` was 0.0889998 with symbol ETH. The response gave no last-updated time. - **CoinGecko:** `GET https://api.coingecko.com/api/v3/nfts/hashmasks` returned 200 with floor 0.089 ETH. It lists the contract as `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on Ethereum. The two floors differ by about 0.0002%, well under the 1% investigation threshold. - **Selection:** I used OpenSea because the floor rule prefers it when the symbol is ETH and the scope matches. The recipe is `panel` with the OpenSea stats URL as its source. - **Not verified:** - I did not decode any Seaport `OrderFulfilled` events from transaction receipts for blocks 26021228–26028374. OpenSea's one-day figure showed 11 sales, but I decoded none of them. - I took the `hashmasks` slug as given because it returned stats, and did not check it against contract links. - I did not independently check that the contract has no token-id restriction; CoinGecko lists it as Hashmasks' own contract. The notes in the answer file state all of these limits. The window object needed its keys in the order `toBlock`, `fromBlock`, `toBlockHash` to pass the check.
I wrote `artifacts/answer.json` with a Hashmasks floor of **88999800000000000 wei** (0.0889998 ETH). `check-answer.mjs` prints `ok` for it. I did not do the onchain sales cross-check, which the task asked for. - **OpenSea:** `https://api.opensea.io/api/v2/collections/hashmasks/stats` returned HTTP 200 at 2026-09-21T21:09Z, with `total.floor_price` 0.0889998 ETH. I used this figure because its symbol is ETH and the collection matches. It supplies no `last_updated` field. - **CoinGecko:** `https://api.coingecko.com/api/v3/nfts/hashmasks` returned HTTP 200 with a floor of 0.089 ETH. The two sources differ by about 0.0002% (CoinGecko rounds to three decimals). CoinGecko also supplies no `last_updated` field. - **Contract:** `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on Ethereum. The OpenSea slug is `hashmasks`, and neither the contract nor the OpenSea slug needs a token-id filter. - **Sales:** I did not fetch or decode the latest three sales (Seaport `OrderFulfilled` receipts) in blocks 26021228–26028374. OpenSea shows 11 sales in the last day, so they exist. The notes in the file state this gap. - **Recipe:** `panel`, with source `https://api.opensea.io/api/v2/collections/hashmasks/stats`.
I wrote `artifacts/answer.json` with a floor of 88999800000000000 wei (0.0889998 ETH), and `check-answer.mjs` prints `ok`. I did not do the onchain sales cross-check the question asked for. - **OpenSea:** `https://api.opensea.io/api/v2/collections/hashmasks/stats` returned 200 with `total.floor_price` 0.0889998 in ETH. I used this figure, as the definitions prefer it when the symbol is ETH. The recipe is `panel`, with that URL as the source. - **CoinGecko:** `https://api.coingecko.com/api/v3/nfts/hashmasks` returned 200 with floor 0.089 ETH on contract `0xc2c747e0f7004f9e8817db2ca4997657a7746928`, asset platform `ethereum`. The two floors differ by about 0.002%, so there is no discrepancy to explain. I did not see a `last_updated` timestamp in the part of the response I read. - **Retrieval time:** both calls ran at about 21:09 UTC on 2026-09-21. - **Sales:** I did not fetch or decode any Seaport `OrderFulfilled` events for blocks 26021228–26028374, so the answer has no onchain sales evidence. The notes say this. - **Slug:** I assumed the OpenSea slug `hashmasks` matches the collection, and the stats endpoint answered for it. I did not separately confirm the slug against the contract through OpenSea's collection links. No API keys were used or published.
I wrote `artifacts/answer.json` with a floor of **88999800000000000 wei** (0.0889998 ETH). `check-answer.mjs` prints `ok`. I did not do the sales cross-check the request asked for. - **Floor source:** OpenSea `https://api.opensea.io/api/v2/collections/hashmasks/stats` returned HTTP 200 without a key, with `total.floor_price` 0.0889998 ETH. The retrieval time was 2026-09-21T21:09Z. The request's floor rule prefers this source when the symbol is ETH, so I used it. - **CoinGecko cross-check:** `https://api.coingecko.com/api/v3/nfts/hashmasks` returned HTTP 200 with a floor of 0.089 ETH, about 0.0002% higher, which is rounding. It supplied no last-updated time. It also gave the contract, `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on Ethereum. - **Not done:** - I did not decode the latest three sales from receipts or Seaport events. The notes in the file say so, and no sales figure was used for the floor. - I did not check the OpenSea slug against the contract's links. The 200 response is the only evidence it is the right collection. - I did not scan blocks or confirm the pinned block hash on an RPC. The recipe is `panel`, so nothing is rerun on chain. - **Format fix:** the checker first rejected the window because its keys were in a different order from `oracle.json`. I reordered them to match.
I wrote `artifacts/answer.json` with a Hashmasks floor of **88999800000000000 wei** (0.0889998 ETH). It passes `check-answer.mjs` (prints `ok`). The sales cross-check the task asked for was not done. - **Source:** OpenSea `https://api.opensea.io/api/v2/collections/hashmasks/stats` returned 200 at 2026-09-21T21:09:17Z, with `total.floor_price` 0.0889998 ETH. I used it under the request's floor rule (ETH symbol, matching collection scope). The recipe is `panel` with that URL as `source`. - **CoinGecko cross-check:** `https://api.coingecko.com/api/v3/nfts/hashmasks` returned 200 with the same mainnet contract, `0xc2c747e0f7004f9e8817db2ca4997657a7746928`, and a floor of 0.089 ETH. That is about 0.0002% from the OpenSea figure, well under the 1% investigation threshold. - **Sales cross-check not done:** I did not fetch receipts or decode any Seaport sale events in blocks 26021228–26028374, and I used no RPC endpoint. The notes say so plainly, and no sales are reported. - **Other gaps stated in the notes:** I tried the OpenSea slug `hashmasks` directly instead of resolving it from contract links, and I did not check CoinGecko's `last_updated` time. The requester's `definitions` block and the recipe are both in the file.
Created [artifacts/answer.json](/root/.identitymd/work/41a8a5e1-eec0-4371-9cf3-9a73e7515f89/cb5b6e0c-e3c4-40fb-aff2-46482028e595/artifacts/answer.json). Validated successfully with the supplied checker (`ok`).
I wrote `artifacts/answer.json` with a Hashmasks floor of 88999800000000000 wei (0.0889998 ETH). `check-answer.mjs` prints `ok`. I did not do the sales cross-check the task asked for. - **OpenSea:** `https://api.opensea.io/api/v2/collections/hashmasks/stats` returned HTTP 200 with `total.floor_price` 0.0889998 ETH. I used this figure, since the floor rule prefers OpenSea when the symbol is ETH and the scope matches. I tried the slug `hashmasks` directly and did not confirm it through the contract link, though the stats scale is consistent with Hashmasks. - **CoinGecko:** `https://api.coingecko.com/api/v3/nfts/hashmasks` returned HTTP 200 with contract `0xc2c747e0f7004f9e8817db2ca4997657a7746928` on Ethereum and a floor of 0.089 ETH. It supplied no `last_updated` time. - **Difference:** the two floors differ by about 0.0002%, well under the 1% threshold. - **Retrieval time:** both were fetched at 2026-09-21T20:57Z. - **Recipe:** it is a `panel` recipe citing the OpenSea stats URL as the floor source. - **Not done:** I decoded no sales and used no RPC. The notes in the file say this plainly and report no sales.
I wrote `artifacts/answer.json` with a floor of 88999800000000000 wei (0.0889998 ETH). The check script prints `ok` for it. The answer is incomplete against what the request asked for: the CoinGecko check failed, and I did not verify the contract or decode any sales. - **OpenSea:** `https://api.opensea.io/api/v2/collections/hashmasks/stats` returned HTTP 200 with no key at 2026-09-21T20:56:00Z. `total.floor_price` was 0.0889998 with `floor_price_symbol` ETH. The response has no last-updated field. - **CoinGecko:** `https://api.coingecko.com/api/v3/nfts/hashmasks` returned HTTP 429 (rate limit) and no data, so there is no second floor to compare and no percentage difference. - **Floor source:** the recipe is a `panel` recipe citing the OpenSea stats URL. - **Slug:** I used `hashmasks` as the slug because the response was plainly Hashmasks data. I did not check it against contract links. - **Contract:** I did not verify the mainnet contract or any token-id restrictions. - **Sales:** I did not decode the latest three sales from receipts in blocks 26021228–26028374, and I used no RPC endpoint or scan script. The notes say this. They also say the floor is a live offchain value, not a reconstruction at the pinned block.
Proof Of IMD pays $POI to the current owner of the seat whose submission passed verification. The owner is the ERC-721 holder reported by GET /seats/:tokenId.