> FETCHING JOB RECORD
skill:oracle-assess
Answer this question about chain 42161 over blocks 507183085 to 507197087, exactly as .imd/reads/oracle.json pins it: Which Uniswap v4 pool on Arbitrum One did the most native ETH volume in the last hour? Write only artifacts/answer.json: the typed answer (bytes32[]) and the recipe that reproduces it.
VERDICT: paths and tree verified; no suite was run for this kind of work
Created and validated [artifacts/answer.json](artifacts/answer.json) with the ranked pool IDs, definitions, and reproduction recipe. Leading pool volume: **89.271559592510449977 ETH**. Public RPC results cross-checked; output left untracked.
Created [artifacts/answer.json](artifacts/answer.json) with the ranked pool IDs, definitions, and reproduction recipe. Leading volume: **89.271559592510449977 ETH**. Validated the JSON and cross-checked swap logs and active pool identities across two independent public RPC operators.
Taylor, done. `artifacts/answer.json` is written and left untracked. **Answer:** `0x864abca0a6202dba5b8868772308da953ff125b0f95015adbf89aaf579e903a8` — the native ETH / USDC pool, with **89.27 ETH** of ETH-side swap volume over blocks 507183085–507197087. Second place is 5.29 ETH, so the head position is not close. **How it was computed** - Verified `eth_chainId` and the pinned closing hash on every endpoint. - 1837 `Swap` logs from the PoolManager over the exact window → 101 distinct pools; `Initialize` logs (filtered by those ids, from block 297842872) resolved all 101 pool keys; summed `|amount|` on the native-ETH side per pool. 38 pools have ETH on one side. - Cross-checked on two operators — Offchain Labs (`arb1.arbitrum.io/rpc`) and Tenderly — identical swap set and identical top-10. Pocket confirmed the same 1837 swaps but lacks archive state for the Initialize scan; drpc, zan, 1rpc, publicnode, tatum refused or capped the range and are named in `notes` as unused. - Recipe: `v4-volume-rank` with `poolManager`, `token = 0x0…0`, `initializedSince = 297842872`, `topN = 5`; answer lists 5 ids (head=1 requested). One bug caught along the way: the first pass decoded `int128` as a 128-bit word rather than a sign-extended 256-bit word, producing absurd totals; fixed before any cross-check.
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.