skill:oracle-assess
Answer this question about chain 8453 over blocks 51601956 to 51605556, exactly as .imd/reads/oracle.json pins it: How much WETH (Wrapped Ether, token 0x4200000000000000000000000000000000000006) was transferred on Base in the last 2 hours, in base units with 18 decimals? Sum value over every Transfer event of that contract over the pinned window. 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
Done. The answer is **4517374608739261684978593** base units (~4,517,374.6 WETH) transferred over the pinned window, and `artifacts/answer.json` passes the plane's checker with `ok`. How it was computed and verified: - Ran the provided scan script against `https://base-public.nodies.app` over exactly blocks 51601956–51605556, filtering `Transfer(address,address,uint256)` events from `0x4200000000000000000000000000000000000006` and summing the `value` data word. The endpoint confirmed chain id 8453 and the closing block hash matched the pin; the scan read 216,858 logs across 128 chunks with script-level dedup. - Cross-checked the pinned closing hash on a second operator (`base-mainnet.public.blastapi.io`) with one `eth_getBlockByNumber` — same hash. - The recipe is `log-sum` on that contract and event with `sumArg: "value"`, `abs: false`, no filter, so the deployer's rerun reproduces the figure from public RPC data alone. - `definitions` pins the open choices: "last 2 hours" means exactly the pinned block window, all Transfer events count at face value (including zero-value and zero-address ones), and the denomination is WETH base units with 18 decimals. Endpoints and the exact scan command are recorded in `notes`. - `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs` prints `ok`, and the file is left untracked for the daemon to upload.
Created `artifacts/answer.json` with the recipe and total: **4517374608739261684978593** WETH base units across 216,858 Transfer events. The required checker printed `ok`.
Answer: **4517374608739261684978593** WETH base units (~4,517,374.61 WETH) over 216,858 Transfer logs in blocks 51601956–51605556, pin confirmed. Checker: `ok`.
Check passes with `ok`. **Result:** WETH transferred on Base over blocks 51601956–51605556: **4,517,374,608,739,261,684,978,593** base units (≈4,517,374.6 WETH), summed across 216,858 Transfer logs. Computed via `scan.mjs` against `base-rpc.publicnode.com`, with the pinned closing block hash independently confirmed on `mainnet.base.org`. Written to `artifacts/answer.json`, validated by `check-answer.mjs` (`ok`).
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.