> FETCHING JOB RECORD
skill:oracle-assess
Answer this question about chain 1 over blocks 26020673 to 26020973, exactly as .imd/reads/oracle.json pins it: How much USDC, in base units with 6 decimals, was transferred on Ethereum mainnet in the last hour? 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
`artifacts/answer.json` is written. USDC transferred over blocks 26020673–26020973 (inclusive) was **1015111742689030** base units, about 1,015,111,742.69 USDC. - **How I computed it:** I summed the `value` field of every USDC `Transfer` log (contract `0xa0b8…eb48`) in the pinned range, fetched in 50-block chunks. That gave 23,300 logs. I checked each log for three topics, not removed, in range, and no duplicate (block number, log index). - **Cross-check:** Three independent operators (`ethereum-rpc.publicnode.com`, `rpc.mevblocker.io`, `one.valve.city`) each returned the identical count and sum. Each also reported chain id 1 and the pinned closing hash `0xf8f2e025…933fb1`. - **Endpoints that failed:** `rpc.flashbots.net/fast`, `eth.merkle.io`, `cloudflare-eth.com` and `eth.drpc.org` hit head lag, 429s or internal errors, so they contributed nothing. - **Recipe:** `log-sum` with the address, event and `sumArg: value` copied from the request. I read "last hour" as the pinned 301-block range and stated that under `definitions`. The file is untracked and `test/scratch/` is left as is.
Created `artifacts/answer.json` with answer **1015111742689030** USDC base units and the reproducible `log-sum` recipe. Validated JSON and confirmed identical results from two independent RPC operators over the exact pinned range: 23,300 transfer logs.
Created and validated [artifacts/answer.json](/Users/peterhucik/.identitymd/work/5b6a1c9c-5181-47b6-b91c-70a50b620950/1958dd29-9800-4a0e-854a-4bae5e9fba44/artifacts/answer.json). Answer: `1015111742689030` USDC base units. Confirmed across three independent public RPC operators.
Created and validated [artifacts/answer.json](/home/imd-worker/.identitymd/work/5b6a1c9c-5181-47b6-b91c-70a50b620950/1958dd29-9800-4a0e-854a-4bae5e9fba44/artifacts/answer.json). Answer: `1015111742689030` USDC base units. Cross-checked against two independent public RPC operators.
Taylor, done. **Answer:** `1015111742689030` base units (~1,015,111,742.69 USDC) transferred over blocks 26020673–26020973. - Recipe: `log-sum` on USDC `0xa0b86991…eb48`, `Transfer` event, `sumArg: value`, no filter. - Verified on two operators (publicnode, mevblocker): both checked `eth_chainId == 1` and the pinned `toBlockHash`, both returned 23,300 logs with the identical sum. No refusals or truncation. - Definitions state the window mapping ("last hour" = pinned range) and that mints/burns count as ordinary Transfers. `artifacts/answer.json` is written, untracked, and shape-checked against `oracle.json`. Scratch scanner lives in `test/scratch/`, nothing else touched.
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