5bea5023-939c-49ef-ae2a-00b5992c6f40IMD JOB

Done. Wrote `artifacts/answer.json` with answer: `821473402172661870` Verification run: `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs artifacts/answer.json .imd/reads/oracle.json` Result: `ok`

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. **Answer: 821473402172661870 wei** (~0.8215 ETH), the floored mean of 139 qualifying Seaport sales summing to 114184802902000000000 wei. How it was computed, over exactly blocks 26019450–26026606: 1. `eth_getLogs` for `Transfer` on `0x387c…392c`: 191 logs (all four-topic ERC-721 transfers) in 163 blocks. Every qualifying sale moves one of the collection's tokens, so this narrows the Seaport scan without narrowing the window. 2. `eth_getLogs` for `OrderFulfilled` on Seaport 1.5 and 1.6 over those blocks: 449 events, decoded as `(bytes32, address, SpentItem[], ReceivedItem[])` — 0 decode failures. 3. 140 events hold an NFT item of the collection; 1 is a two-NFT bundle and is excluded; 139 qualify (91 listing fills priced at the consideration sum, 48 bid fills priced at the offered ETH/WETH). No fill of this collection was paid in any token other than ETH or WETH, and no ERC-1155 or criteria item types survived into the events. Verification: chain id and the pinned closing hash confirmed on three operators (publicnode, drpc, blastapi); the whole scan was run end-to-end twice on two different operators (publicnode and blastapi) and returned identical transfer counts, event counts and sum, so neither read was truncated. drpc refused the `eth_getLogs` shape with HTTP 400 and was used for the pin check only. One judgement call, stated in `definitions` and `notes`: 12 of the 139 events are the two sides of the same matched order in one transaction. The brief defines a sale as an `OrderFulfilled` event and gives a price branch for each side with no de-duplication rule, so both sides were counted. De-duplicating instead would give 127 sales and a mean of 841953566157480314 wei — that number is in `notes` so a reader can see what the alternative reading costs. The recipe is `{kind: "panel", source}`, required because the brief carries `"evidence": "panel"`; none of the chain recipes can express this anyway, since `log-sum` adds one fixed data word while Seaport's price lives in a variable-length consideration array.

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok`. The average Argonauts sale price over blocks 26019450–26026606 is **821473402172661870 wei**, about 0.82 ETH. - **Sales:** 139 qualifying sales summed to 114184802902000000000 wei. - **Scan:** I fetched every Argonauts `Transfer` log in the window (191 logs in 163 blocks). I then decoded the Seaport 1.5 and 1.6 `OrderFulfilled` logs in exactly those blocks (431 fills), since any sale has to move the token. - **Exclusions:** 291 of the 431 fills involved no Argonauts token. One was a multi-NFT bundle, so it was excluded. - **Pricing:** I followed the brief's definitions. A listing fill sums every consideration amount, only if all items are ETH or WETH. A bid fill uses the offer amount. - **Pin:** The closing block hash of 26026606 matched the pin on publicnode, flashbots and mevblocker. All the log reads came from publicnode. - **Recipe kind:** The recipe is `panel`, not a chain recipe. The brief says `"evidence": "panel"`, so the checker rejects any other kind, and no chain recipe computes this average anyway. The `source` field names the publicnode `eth_getLogs` reads. The full method is in `notes`. My scan script is in `test/scratch/calc.mjs`, which isn't submitted. I didn't use `scan.mjs`, because it can't decode Seaport's nested item arrays. `git status` shows nothing, so `artifacts/answer.json` appears to be ignored by git; it exists on disk for the daemon to pick up.

Created [artifacts/answer.json](/home/imd1/.identitymd/work/5bea5023-939c-49ef-ae2a-00b5992c6f40/d835fd09-d137-4cb1-a6a2-5d40d9eef820/artifacts/answer.json). Average: **821473402172661870 wei** across **139 sales**. Public RPC reproduction matched, and the required checker printed `ok`.

Created `artifacts/answer.json` with **821473402172661870 wei**, averaged over 139 qualifying sales, plus definitions and reproduction code. Validation: `check-answer.mjs` prints `ok`.

I wrote `artifacts/answer.json`. The average sale price was **821473402172661870 wei**, about 0.82 ETH. `check-answer.mjs` prints `ok`. - **How it was computed:** I pulled every Seaport 1.5 and 1.6 `OrderFulfilled` log over blocks 26019450 to 26026606 and decoded them with my own script. 12,241 logs were scanned and 139 qualified. - **Exclusions:** one event was left out for having more than one NFT item. Nothing was excluded for payment in a token other than ETH or WETH. - **Sum and mean:** the prices total 114184802902000000000 wei, and dividing by 139 and rounding down gives the answer. - **Cross-check:** a second full scan through a different pair of endpoints gave the same count and sum. The pinned closing block hash matched on all three endpoints I checked. - **Recipe:** I used `kind: panel` with the RPC endpoint as `source`. The brief says `evidence: panel`, and the checker refuses any other recipe kind for such a brief, even though the value came from on-chain data. - **Previous failure:** the earlier attempt failed because the `artifacts/` directory did not exist. I created it, and the answer file is untracked. The scan script is in `test/scratch/`, which is not submitted.

Created `artifacts/answer.json` with average **821473402172661870 wei** across 139 qualifying sales. The included reproduction code returned the same result. The required checker printed `ok`.

I wrote `artifacts/answer.json`. The average Argonauts sale price over blocks 26019450–26026606 is **821473402172661870 wei**, about 0.82 ETH. `check-answer.mjs` prints `ok`. - **How it was computed:** - I pulled every Seaport 1.5 and 1.6 `OrderFulfilled` log in the pinned window from `ethereum-rpc.publicnode.com` (12,241 logs). Chain id is 1 and the closing block hash matches the pin. - I decoded the offer and consideration items myself, because `scan.mjs` can't decode the nested arrays. - A qualifying sale has exactly one ERC-721 item of the collection and no other NFT. Listing fills count every consideration amount, and only if all of it is ETH or WETH. Bid fills count the offer amount. - **Result:** 139 qualifying sales, made up of 91 listing fills and 48 bid fills. Their total is 114184802902000000000 wei. Divided by 139 and rounded down, that gives the answer above. - **Recipe kind:** the brief says `evidence: "panel"`, and the checker only accepts a `panel` recipe for that. So the recipe's `source` describes the endpoint and the log query rather than a rerunnable `log-sum`. - **Second endpoint:** I also confirmed the closing block hash on `rpc.flashbots.net/fast`. I did not run a second full scan. - **The earlier failure:** the `artifacts/` directory didn't exist, so I created it. The file is untracked and not committed. - **Scratch files:** the decoder script is in `test/scratch/sea.mjs`.

Created `artifacts/answer.json` with the reproduction procedure. Average: **821473402172661870 wei** across **139 sales**. Independent decoding matched; the required validator printed `ok`.

`ok` from the checker, and the file stays untracked as required. ## Answer **821473402172661870 wei** (~0.8215 ETH) — average Argonauts sale price on Seaport over blocks 26019450–26026606. **How it was computed** - Confirmed chain id 1 and the pinned closing hash for block 26026606 on two operators before counting. - `OrderFulfilled` can't be expressed as a `log-sum` (amounts sit in dynamic arrays in the data), and the brief declares `"evidence": "panel"`, so the recipe is `panel` with the RPC + log filter as its source. The figure itself is pure chain data: a dependency-free Node script fetched the logs and decoded the Seaport ABI in-process. - Discovery: the collection's `Transfer` logs over the window (191 logs, 163 blocks) fixed the candidate blocks; all 431 `OrderFulfilled` events from Seaport 1.5/1.6 in those blocks were decoded. A Seaport ERC-721 fill always moves the token, so nothing can be missed, and the scan cost ~100 calls. - 139 qualifying sales (91 listing fills, 48 bid fills), sum 114184802902000000000 wei, floor-divided by 139. **Checks** - The full scan ran end-to-end on `rpc.mevblocker.io/fast` and `ethereum-rpc.publicnode.com` with identical per-event prices and sum. - Decode verified against transaction values: a two-token sweep (0.6889 + 0.695) equals its tx value of 1.3839 ETH, and a single fill of 0.516 equals its tx value — so prices include fees. - `rpc.flashbots.net/fast` rate-limited every `eth_getLogs`; drpc/bloxroute/blastapi refused or capped the range. Both working endpoints are named in `notes`. **The one judgment call**, stated in `definitions`: the brief defines a sale as an `OrderFulfilled` *event*, so 12 matched listing+bid pairs (one trade, two events) count twice. Counting trades instead would give 127 sales and 841953566157480314 wei; I followed the brief's literal wording and recorded the alternative in the notes. One event listing the collection token in both offer and consideration is excluded — it fails both the "exactly one ERC-721 item" test and the "every consideration item is ETH or WETH" test.

The average sale price of Argonauts over the pinned window was **821473402172661870 wei** (about 0.8215 ETH). I've written it to `artifacts/answer.json`, and the answer check prints `ok`. - **How it was computed:** I pulled every Seaport `OrderFulfilled` log from both Seaport contracts (1.5 and 1.6) over exactly blocks 26019450–26026606, using `https://ethereum-rpc.publicnode.com`. That came to 12,241 logs. The pinned closing block hash matched there and on a second provider (`https://rpc.flashbots.net/fast`). - **Sales counted:** 140 logs involved the Argonauts contract, and 139 of them met the brief's rules for a sale. One was dropped by those rules; I didn't look into why. - **The figure:** those 139 sales add up to 114184802902000000000 wei. Dividing by 139 and rounding down gives the answer. - **Recipe:** the brief marks this as a panel-evidence question, so the only recipe type the check accepts is `panel`. It names the endpoint URL, the two Seaport addresses, the event topic and the block range. Nothing in it can be rerun automatically. How to read each log (what counts as a sale, and how price is worked out for a listing versus a bid) is written out under `definitions`. I did one full scan and didn't repeat it on a second provider. The helper script is in `test/scratch/` and isn't delivered. The answer file is left untracked for the daemon to upload.

Created [artifacts/answer.json](/home/worker/.imd/seat2/work/5bea5023-939c-49ef-ae2a-00b5992c6f40/d835fd09-d137-4cb1-a6a2-5d40d9eef820/artifacts/answer.json). Average sale price: `821473402172661870` wei across 139 qualifying sales. Validator result: `ok`.

required named outputs are invalid: artifacts/answer.json: ENOENT: no such file or directory, lstat 'C:\Users\owner\.identitymd\work\5bea5023-939c-49ef-ae2a-00b5992c6f40\d835fd09-d137-4cb1-a6a2-5d40d9eef820\artifacts'

FAILURE: runtime_error

The average Argonauts sale price over blocks 26019450–26026606 was **821473402172661870 wei** (about 0.82 ETH). `check-answer.mjs` prints `ok` for `artifacts/answer.json`. - **Sales counted:** 139 qualifying Seaport 1.5/1.6 fills, totalling 114184802902000000000 wei. The average is that total divided by 139, rounded down. - **How I computed it:** I fetched the collection's Transfer logs over the window, which touched 167 transactions. I decoded the `OrderFulfilled` events from those transactions' receipts and applied the request's definitions for what counts as a sale and its price. - **Scan method:** The provided `scan.mjs` can't decode Seaport events, so I wrote my own script in `test/scratch/`, which isn't submitted. - **Endpoint and pin:** I read from `https://ethereum-rpc.publicnode.com`, and it returned chain id 1 and the pinned closing block hash. I did not check the hash on a second endpoint. - **Recipe kind:** The brief says `"evidence": "panel"`, and the reference says such a brief takes only the `panel` recipe. So the recipe is `panel`, with the endpoint and method above as its `source`. The deployer can't rerun a `panel` recipe automatically; the panel's agreement on the value is the evidence. - **Window key order:** The check requires the `window` keys in the brief's order (`toBlock`, `fromBlock`, `toBlockHash`), and the file uses that order.

Not logged in · Please run /login

FAILURE: runtime_error

Created [artifacts/answer.json](/Users/peterhucik/.identitymd/work/5bea5023-939c-49ef-ae2a-00b5992c6f40/d835fd09-d137-4cb1-a6a2-5d40d9eef820/artifacts/answer.json). Answer: `821473402172661870` wei. The required checker prints `ok`.

Created `artifacts/answer.json` with average **821473402172661870 wei** across **139 sales** and executable reproduction details. The reproduction matched, and the required checker printed `ok`.

Created `artifacts/answer.json` with **821473402172661870 wei**, averaged over 139 qualifying sales. The included reproduction code returned the same result. The required checker printed `ok`.

`artifacts/answer.json` is written and `check-answer.mjs` prints **ok** (exit 0). **Answer: 821473402172661870 wei** (average), from a sum of 114184802902000000000 wei over 139 sales. How it was computed, over exactly blocks 26019450–26026606: 1. Confirmed `eth_chainId` = 1 and the closing block hash `0x0f84a1…a5fb2` against the pin on `ethereum-rpc.publicnode.com`, then cross-checked the same hash on nodereal and mevblocker (different operators). Flashbots 429'd on `eth_getLogs` and was dropped. 2. Pulled the collection's `Transfer` logs (191 transfers, 163 distinct blocks). Every Seaport ERC-721 fill moves the token, so those blocks are a superset of the blocks holding a qualifying `OrderFulfilled` — same result as a full-window Seaport scan at a fraction of the calls. 3. Pulled `OrderFulfilled` from Seaport 1.5 and 1.6 in exactly those blocks (431 events) and decoded the offer/consideration arrays by hand. 4. 140 events touch the collection; 1 is a two-NFT bundle, excluded by the brief. The other 139 qualify: 91 listing fills (consideration summed, fees included) and 48 bid fills (the offer amount). No ERC-1155, no criteria items, no non-ETH/WETH payments appeared, so nothing was dropped for currency. All qualifying fills were Seaport 1.6. Two judgement calls are stated under `definitions` and used consistently: an NFT item means `itemType >= 2` (so 1155 and criteria items count as "another NFT"), and **a sale is one `OrderFulfilled` event**, as the brief defines it — 12 matched trades emit two events each (gross bid leg plus the 99% listing leg) and both were counted. Collapsing those to one trade apiece would give 841953566157480314 over 127 trades; `notes` records that alternative so the panel can see where a disagreement would come from. Because the brief sets `"evidence": "panel"`, the recipe is `{kind: "panel", source}` — the check refuses a chain recipe here, and none of `log-sum`/`log-rank`/`call-compare`/`v4-volume-rank` can decode Seaport's dynamic item arrays anyway; the source names the RPC, the topic, both Seaport contracts and the filter so the read is reproducible. Scan script lives in `test/scratch/seaport.mjs` and is not submitted.

Created `artifacts/answer.json` with **821473402172661870 wei**. The included reproduction procedure returned the same result across 139 sales. The required checker printed `ok`.

Created [artifacts/answer.json](/root/.identitymd/work/5bea5023-939c-49ef-ae2a-00b5992c6f40/d835fd09-d137-4cb1-a6a2-5d40d9eef820/artifacts/answer.json). Answer: `821473402172661870` wei. Validation passed: `check-answer.mjs` printed `ok`.

Created `artifacts/answer.json` with **821473402172661870 wei**, averaged over 139 qualifying sales, and a reproducible RPC calculation. Required checker printed `ok`.

Completed [artifacts/answer.json](/home/imd-worker/.identitymd/work/5bea5023-939c-49ef-ae2a-00b5992c6f40/d835fd09-d137-4cb1-a6a2-5d40d9eef820/artifacts/answer.json). Computed average: `821473402172661870` wei. The provided verifier reports `ok`.

**821473402172661870 wei** (~0.8215 ETH) — 139 qualifying Seaport fills, sum 114184802902000000000 wei, floor-averaged; confirmed byte-identical on dRPC (keyed) and `https://ethereum-rpc.publicnode.com`. `check-answer.mjs` prints `ok` for `artifacts/answer.json`.

Created [artifacts/answer.json](/home/imd-worker/.identitymd/work/5bea5023-939c-49ef-ae2a-00b5992c6f40/d835fd09-d137-4cb1-a6a2-5d40d9eef820/artifacts/answer.json). Computed average: `821473402172661870` wei from 139 qualifying sales. Validation passed: `check-answer.mjs` printed `ok`.

Wrote `artifacts/answer.json`: **821473402172661870 wei**, averaged over 139 qualifying sales, with reproduction instructions. Required validator printed `ok`.

Done. `check-answer.mjs` prints `ok`; `artifacts/answer.json` is untracked (not added to git), as required. **Answer: `821473402172661870` wei** (≈0.8215 ETH), the floor average over 139 qualifying Argonauts sales in blocks 26019450–26026606. How it was computed: - Fetched every `OrderFulfilled` log from Seaport 1.5 and 1.6 over exactly the pinned window from `https://rpc.flashbots.net/fast` (chain id 1, closing hash matches the pin), and decoded the `SpentItem[]`/`ReceivedItem[]` arrays in-process with a scratch script under `test/scratch/` — the catalogue's `scan.mjs` can only sum a fixed data word, so it can't apply these definitions on its own. - 12,241 logs total; 140 touched the collection; 1 excluded as a bundle; 139 qualified (91 listing fills summed over all-ETH/WETH consideration, 48 bid fills priced at the offer amount), all on Seaport 1.6. Sum 114184802902000000000 / 139, floored. - Cross-checked on a second operator (`https://ethereum-rpc.publicnode.com`) with 400-block chunks: identical log count, sale count, and average, so no truncation. Two things worth flagging: - The brief is `evidence: panel`, so the recipe is `{kind: "panel", source: <RPC URL>}` and the full derivation (topic, layout, counts, command) is in `notes`; the answer is only reproducible via the definitions, not a catalogue rerun. - The literal definition counts each `OrderFulfilled` once, so a `matchOrders` fill emitting two events would be double-counted; I followed the definition as written and noted it.

Done. The answer is **821473402172661870 wei** (~0.8215 ETH) — the average Argonauts sale price on OpenSea over the pinned window, written to `artifacts/answer.json`, which `check-answer.mjs` passes with `ok`. How it was computed: - I wrote a scanner in `test/scratch/argonauts-scan.mjs` (Node, no dependencies, reusing the skill script's keccak256) that fetches every `OrderFulfilled` log from Seaport 1.5 and 1.6 over exactly blocks 26019450–26026606 via `eth_getLogs` on `https://ethereum-rpc.publicnode.com`, chunked with halving on refusal, deduplicated by block:logIndex, and decodes each log's offer/consideration arrays with the Seaport ABI. Only totals were printed, never logs. - The endpoint's chain id is 1 and the closing block's hash matched the pinned `0x0f84…5fb2`; I confirmed the same hash on a second operator (`eth.drpc.org`) with one `eth_getBlockByNumber`. (My first cross-check call used a mistyped hex block number; I reran it correctly.) - Of 12,241 `OrderFulfilled` logs in the window, 139 qualified under the brief's definitions — exactly one ERC-721 of the collection, no other NFT, paid entirely in ETH/WETH: 91 listing fills (price = sum of all consideration amounts, fees included) and 48 bid fills (price = the single offer amount). No fill was excluded for a non-ETH/WETH payment token. Sum 114184802902000000000 wei; average = floor(sum / 139) = 821473402172661870, which satisfies the `min: 1` guard. - Since the brief is panel-evidence, the recipe is `{kind: "panel", source: "https://ethereum-rpc.publicnode.com"}`; every decoding rule applied is restated under `definitions`, and `notes` records the topic0, endpoints, counts, and arithmetic so the figure reproduces from public RPC data alone. `artifacts/answer.json` is left untracked (it's covered by `.git/info/exclude`), so the daemon will pick it up itself.

Created `artifacts/answer.json` with the average **821473402172661870 wei**, based on 139 qualifying sales, and runnable reproduction code. Required checker: `ok`.

Created [artifacts/answer.json](artifacts/answer.json) with the average **821473402172661870 wei** across **139 qualifying sales**, plus definitions and reproduction code. The required checker printed `ok`.

Created [artifacts/answer.json](/home/imd-worker/.identitymd/work/5bea5023-939c-49ef-ae2a-00b5992c6f40/d835fd09-d137-4cb1-a6a2-5d40d9eef820/artifacts/answer.json). Average sale price: `821473402172661870` wei. Validation result: `ok`.

Done. `artifacts/answer.json` is written and passes the plane's check (`ok`, exit 0), untracked in git. **Answer: 821473402172661870 wei** (≈0.8215 ETH), from a sum of `114184802902000000000` wei over 139 qualifying fills. How it was computed: - Confirmed `eth_chainId` `0x1` and the pinned hash of block 26026606 on two operators (flashbots, publicnode); the window is exactly 24 h / 7157 blocks. - Ran the brief's own source whole: `eth_getLogs` for `OrderFulfilled` (`0x9d9af8e3…cb6f31`) on Seaport 1.5 and 1.6 across 26019450–26026606 in 200-block chunks, halving on refusal — 12,241 logs, 140 mentioning the collection, 139 qualifying after dropping one multi-NFT bundle (91 listing fills priced as the fee-inclusive consideration sum, 48 bid fills priced as the WETH offer amount). No ERC-1155 or foreign-token fills appeared. - Cross-checked discovery by a second, independent path (the collection's 191 ERC-721 `Transfer` logs → 167 receipts → Seaport logs in them): identical 139 `(tx, logIndex, price)` triples, so nothing was truncated. Two things worth your attention, both stated in the artifact: 1. **The recipe had to be `panel`.** The brief sets `"evidence": "panel"`, and `check-answer.mjs` rejects any other kind for it. That's also the honest fit: none of the four chain recipes can express this figure, since `log-sum` sums one static argument while the price lives in `OrderFulfilled`'s dynamic offer/consideration arrays. The `source` field names the exact query and decode so the deployer can rerun it. 2. **Matched order pairs.** 12 of the 139 fills are `matchOrders` pairs — one transaction emitting a bid-side and a listing-side event for the same token. The brief defines a sale as an `OrderFulfilled` event and gives a price rule for each side, so both were counted, as written. Collapsing each pair to one sale at its bid price would instead give 127 sales and a mean of `841953566157480314`; that alternative is recorded in `notes` in case the panel converges there.

Created `artifacts/answer.json` with **821473402172661870 wei**, computed across 139 qualifying sales, and included reproduction code. The required checker printed `ok`.

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. The average Argonauts sale price on OpenSea over blocks 26019450–26026606 comes to **821473402172661870 wei**, about 0.821 ETH. - **Window:** the closing block hash on Ethereum mainnet matches the pinned `0x0f84…5fb2`. - **Sales counted:** 139 qualifying `OrderFulfilled` events, 91 listing fills and 48 bid fills. Their prices sum to 114184802902000000000 wei, and that sum divided by 139 and rounded down gives the answer. - **Method:** the stock `scan.mjs` can't decode `OrderFulfilled`, so I wrote my own script. It pulled the collection's Transfer logs for the window (191 logs across 167 transactions), read each transaction's receipt, and kept the events from the two Seaport contracts that met the brief's definitions. - **Excluded:** one event that had two collection tokens in it. No fills paid in a token other than ETH or WETH turned up. - **Same-transaction pairs:** in some transactions a bid and a listing event both appear. The brief counts events, so I counted both and noted this under `definitions`. - **Recipe kind:** the brief says `evidence: "panel"`, so the checker only accepts `{kind: "panel", source}`. The figure is still computed from chain data, and `notes` says how to reproduce it. - **Endpoints:** I used `ethereum-rpc.publicnode.com` and rotated through the flashbots, mevblocker and valve.city endpoints on 403/429 errors, and the endpoints are named in `notes`. - **Scratch script:** `test/scratch/sales.mjs` is not submitted.

The average Argonauts sale price over blocks 26019450–26026606 was **821473402172661870 wei** (about 0.8215 ETH). The answer is in `artifacts/answer.json`, and `check-answer.mjs` prints `ok` for it. - **How it was computed:** the scan script provided couldn't decode Seaport's event data, so I wrote a small Node script in `test/scratch/`. It fetched every `OrderFulfilled` log from both Seaport contracts over exactly the pinned blocks, from `https://ethereum-rpc.publicnode.com`. I confirmed the chain id and the pinned closing block hash on that endpoint and on `https://rpc.flashbots.net/fast`. I only ran the full scan on one endpoint. - **Counts:** of 12,241 logs, 139 qualify: 91 listing fills and 48 bid fills. None were excluded for being paid in another token. The prices add up to 114184802902000000000 wei, divided by 139 and rounded down. - **Recipe:** the request says `"evidence": "panel"`, so the recipe has to be `{kind: "panel", source}`. The source names the endpoint, the two Seaport addresses, the event topic and the block range, so the log query can be rerun. The decoding and filtering follow the definitions and are described in the answer's `definitions` and `notes`, not in the recipe. - **Possible double counting:** 12 transactions each contain two qualifying events, one shaped like a bid and one like a listing. They look like matched orders, where one sale produces two events. The request counts every qualifying event, so my answer counts both. Counting each of those sales once gives 127 sales and an average of 841953566157480314 wei. I put that figure in `notes` for comparison, but it is not my answer. `artifacts/answer.json` is untracked and not committed, as the task asked. No other files in the deliverable were changed.

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. The average Argonauts sale price was **821473402172661870 wei**, about 0.8215 ETH. - **Sales counted:** 139 qualifying sales over blocks 26019450–26026606, out of 12,241 `OrderFulfilled` logs from Seaport 1.5 and 1.6. - **Total:** the prices sum to 114184802902000000000 wei, and 821473402172661870 is that total divided by 139, rounded down. - **Pricing rule:** listing fills sum every consideration amount, only when all of them are ETH or WETH. Bid fills use the single ETH or WETH offer amount. - **Cross-check:** I scanned the full window on two endpoints with different chunk sizes (mevblocker and publicnode), and both gave identical counts and totals. All three endpoints I touched confirmed chain 1 and the pinned closing hash. - **Recipe kind:** the brief is marked `evidence: panel`, and the checker only accepts a `panel` recipe for that. So the recipe is `{kind: "panel", source: <the RPC URL, blocks, topic and contracts>}`. The figure is still computed from chain data, and `notes` gives the method. `scan.mjs` can't decode the Seaport item arrays, so I used my own decoder at `test/scratch/run.mjs`. That folder isn't submitted, so the deployer would need to rerun the method from `notes`.

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. The average Argonauts sale price over blocks 26019450 to 26026606 is **821473402172661870 wei**, about 0.82 ETH. - **Sales counted:** 139 qualifying sales, totalling 114184802902000000000 wei. - **Scan:** I pulled every `OrderFulfilled` log from Seaport 1.5 and 1.6 (12,241 in total) from `https://ethereum-rpc.publicnode.com`. The chain id is 1 and the closing block hash matches the pin. - **Decoding:** The bundled `scan.mjs` can't decode Seaport's nested offer and consideration items, so I used my own script, `test/scratch/s.mjs`. The definitions are the ones the brief fixed, and they are restated in the file. - **Recipe:** The brief marks this as `"evidence": "panel"`, and the recipe catalogue has no recipe that decodes events. The recipe is therefore `panel`, with the RPC URL as its source. The deployer can't rerun that recipe, and the `notes` field says so. - **File format:** `check-answer.mjs` rejects the window if its keys aren't in the brief's order (`toBlock`, `fromBlock`, `toBlockHash`). I reordered them to match. I did not run a second full scan or check the closing hash on a second endpoint.

Created [artifacts/answer.json](artifacts/answer.json) with reproduction code. Average: **821473402172661870 wei** across **139 sales**. Required validator printed `ok`.