4f01f6d5-c5dd-48ac-9403-14335272b76bIMD JOB

`check-answer.mjs` prints **ok**. Both output files stay untracked (nothing staged in git). ## Result **Average sale price: 36,958,417,058,823,529 wei** (≈0.03696 ETH), from 17 qualifying sales summing 628,293,090,000,000,000 wei over blocks 26019453–26026609. **How it was computed** (`artifacts/answer.json`, panel recipe since the brief carries `"evidence": "panel"`): - Pin confirmed — `eth_chainId` 0x1 and block 26026609 hash matching the brief on four independent operators (publicnode, flashbots, nodereal, bloxroute). - `scan.mjs` can only sum fixed data words, so a scratch script decoded the Seaport ABI's two dynamic tuple arrays, printing totals only. Pass 1: all `Transfer` logs of the collection over the full pinned range — 16 transfers in 10 blocks. Pass 2: `OrderFulfilled` logs on Seaport 1.5 + 1.6 in exactly those blocks — 27 logs, 17 qualifying. Restricting pass 2 is lossless because an ERC-721 fill always emits a Transfer, and the loop closes: the 17 qualifying logs name 16 distinct token ids, one per Transfer, none unexplained. - Mix: 13 bid fills in WETH, 3 listing fills in native ETH, 1 listing fill in WETH — all from Seaport 1.6. **The open definition that matters for panel agreement**: the brief defines a sale *as an OrderFulfilled log*, so I counted literally with no de-duplication. Tx `0x4e3d614c…` matches a bid against its counter-listing and emits two qualifying logs for token 4853 (0.03 and 0.0282 WETH); both count, which is why 17 sales cover 16 token ids. That choice, the listing/bid price rules, the NFT-item test and the ETH≡WETH treatment are all stated under `definitions`.

The check passes with `ok`. **Summary:** Scanned Seaport 1.5/1.6 `OrderFulfilled` logs over the pinned window (blocks 26019453–26026609, hash confirmed on two independent RPC operators), decoded offer/consideration items per the Seaport ABI, and filtered to fills of exactly one Final Bosu ERC-721 paid entirely in ETH/WETH. Found 17 qualifying sales, sum 628293090000000000 wei, average = **36958417058823529 wei**. Written to `artifacts/answer.json` as recipe kind `panel` (required since the brief sets `"evidence": "panel"`), with the on-chain computation detailed in `notes`.

Created [artifacts/answer.json](artifacts/answer.json) with the reproducible calculation. Average: **36958417058823529 wei** across **17 qualifying sales**. Required validator: `ok`.

Done. `artifacts/answer.json` is written, passes the plane's checker (`ok`), and is untracked as required (`artifacts/` is excluded via `.git/info/exclude`, so the daemon will pick it up). **Answer: 36958417058823529 wei** (~0.03696 ETH) — the average Final Bosu sale price on OpenSea over the pinned window. How it was computed: - Confirmed the pinned closing hash of block 26026609 (`0x4578…b178`) on two independent operators (publicnode and flashbots) before scanning. - Fetched all `OrderFulfilled` logs from Seaport 1.5 and 1.6 over exactly blocks 26019453–26026609 with a scratch decoder in `test/scratch/avg-sale.mjs` (chunked `eth_getLogs` with halving on refusal, printing only totals): 12,231 logs in the window. - Applied the brief's definitions: a sale is a fill whose offer+consideration contain exactly one ERC-721 (itemType 2) of `0xfbaa…1942` and no other NFT; listing fills priced as the sum of all consideration amounts only when every consideration item is native ETH or WETH, bid fills as the single ETH/WETH offer amount; everything else excluded. - Result: **17 qualifying sales**, sum 628,293,090,000,000,000 wei, average `floor(sum/17) = 36958417058823529`. - A second full scan from flashbots with 500-block chunks reproduced identical totals, ruling out silent truncation. Since the brief declares `"evidence": "panel"`, the recipe is `{kind: "panel", source: "https://ethereum-rpc.publicnode.com"}`, with the exact decode rule spelled out under `definitions` and the full method in `notes` so the deployer can rerun it.

Created [artifacts/answer.json](/root/.identitymd/work/4f01f6d5-c5dd-48ac-9403-14335272b76b/b94e4a50-a24f-4bed-bd29-00f5ac79581a/artifacts/answer.json). Average sale price: `36958417058823529` wei across 17 qualifying sales. Validation: `check-answer.mjs` prints `ok`.

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FAILURE: runtime_error

required named outputs are invalid: artifacts/answer.json: ENOENT: no such file or directory, lstat 'C:\Users\owner\.identitymd\work\4f01f6d5-c5dd-48ac-9403-14335272b76b\b94e4a50-a24f-4bed-bd29-00f5ac79581a\artifacts'

FAILURE: runtime_error

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. ## Answer **36958417058823529 wei** (≈0.036958 ETH) — the floored mean of 628293090000000000 wei over 17 qualifying sales. ## How it was computed Scanned **every** `OrderFulfilled` log (topic0 `0x9d9af8e3…`) from Seaport 1.5 and 1.6 over exactly blocks 26019453–26026609 on `https://ethereum-rpc.publicnode.com`, decoding `SpentItem[] offer` / `ReceivedItem[] consideration` in-process and applying the brief's sale and price tests. 12,231 events in the window; 17 touch `0xfbaa0e36…` and all 17 qualify — 4 listing fills, 13 bid fills, no bundles, no non-ETH/WETH fills. Checks run: - **Pin confirmed** on three independent operators (publicnode, tenderly, mevblocker): `eth_chainId` = `0x1`, block 26026609 hash = `0x45784483…`. - **Independent second pass**: prefiltering by the collection's ERC-721 `Transfer` logs (16 transfers in 10 blocks) and scanning Seaport only in those blocks yields the identical 17 sales and identical sum. Two judgment calls, both stated under `definitions`: - One trade (tx `0x4e3d614c…`, token 4853) was **matched on chain** and emitted two `OrderFulfilled` logs — a 0.03 WETH bid and the seller's 0.0282 WETH counter-order. That's why 17 sales moved only 16 tokens. The brief defines a sale as an `OrderFulfilled` event and says nothing about deduplicating a match, so both legs count. - Only fills with exactly one offer item are priced, since the brief prices "the single offer item". None in this window had a multi-item offer, so this changed nothing. Two notes on the run: the brief sets `"evidence": "panel"`, so the recipe is the `panel` kind (the checker enforces this) — the `source` names the chain read itself. And the delivered `scan.mjs` sums one fixed data word per log, so it cannot decode Seaport's two dynamic struct arrays; the scan used an equivalent no-dependency script in `test/scratch/` with the same chunk-halving, pin-confirming and print-only-totals discipline. `https://eth.drpc.org` and `https://eth-mainnet.public.blastapi.io` cap free-tier `eth_getLogs` ranges and were dropped.

The average sale price of Final Bosu over blocks 26019453 to 26026609 is 36,958,417,058,823,529 wei, about 0.0370 ETH. `check-answer.mjs` prints `ok` for `artifacts/answer.json`, and that file is the only thing I wrote. It is untracked. - **How I got it:** I pulled all 12,231 `OrderFulfilled` logs from Seaport 1.5 and 1.6 over exactly the pinned blocks, using `ethereum-rpc.publicnode.com`. The closing block hash matched the pinned one. I did not cross-check the hash on a second operator. - **Result:** 17 qualifying sales totalling 628,293,090,000,000,000 wei. Dividing and rounding down gives the figure above. - **Bids:** Four of the 17 are bid fills counted at the offer amount, as the definitions say: 0.21, 0.125, 0.03 and 0.0282 ETH. The 0.21 and 0.125 ETH bids pull the mean well above the listing prices, which were about 0.016 to 0.022 ETH. - **Recipe kind:** The brief says `"evidence": "panel"`, and the checker only accepts a `panel` recipe for that. So the recipe is `panel` with a `source` describing the RPC endpoint, contracts, topic and block range. The deployer cannot rerun it as a chain recipe. The method is in `notes`. - **Scan script:** I used my own scanner (`test/scratch/s.mjs`) rather than `scan.mjs`, because `scan.mjs` cannot decode the nested Seaport item arrays.

Created `artifacts/answer.json`: **36958417058823529 wei**, averaged over 17 qualifying sales, with reproduction instructions. The required checker printed `ok`.

I'll start by reading the pinned task inputs.Now let me read the two scripts to understand exactly what they compute and validate.I've read the brief and the tooling. Key facts: - Pinned window: chain 1, blocks `26019453`–`26026609`, closing hash `0x4578…d178` - Question: floor-average sale price (wei) of Final Bosu (`0xfbaa…1942`) fills on Seaport 1.5/1.6 via `OrderFulfilled`, per the definitions in the brief - `"evidence": "panel"` in the brief → the checker requires `recipe.kind: "panel"` - The scan script prints only totals, but this question needs decoded offer/consideration arrays, so I'll write a scratch fetch+decode script under `test/scratch/` that prints only aggregates Let me check the environment first.Node 22 is available. Now I'll compute the `OrderFulfilled` topic0 and verify the pin on a public endpoint.The topic hash matches the canonical `OrderFulfilled`. My hex conversion was off — let me get the right block hex and check the node's head.Head is past the window. Confirming the pinned closing-block hash:Pin confirmed on publicnode. Quick cross-check on a second operator, then I'll write the scratch fetch+decode script.Pin confirmed on two operators. Now the scratch script — chunked `eth_getLogs` with halving, OrderFulfilled decoding, and the sale/price rules. It prints only aggregates.17 qualifying fills (4 listings, 13 bids), sum 0.6283 ETH, floor average 36958417058823529 wei. Since the figure depends on the full log set, I'll cross-check the scan on a second operator to rule out silent truncation.Identical totals on two operators — 12231 logs, 17 qualifying fills, same sum. One more sanity check on per-fill price spread to catch any decode error producing an outlier:The quick patch broke the file. Simpler to just write the variant directly.All 17 fills are sane (0.016–0.21 ETH, no decode outliers). Average = `36958417058823529` wei, which also satisfies the `min: "1"` guard. Now writing `artifacts/answer.json`. Note: the checker compares `JSON.stringify(window)` to the brief, so I keep the brief's exact key order (`toBlock`, `fromBlock`, `toBlockHash`). Since the brief declares `"evidence": "panel"`, the recipe must be `panel` with a URL source — I'll name the public RPC I scanned.Done. `artifacts/answer.json` passes the checker (`ok`). **Answer: `36958417058823529` wei** (~0.0370 ETH) — the floor-rounded average Final Bosu sale price on OpenSea over blocks 26019453–26026609. How it was computed: - Fetched `OrderFulfilled` logs (topic `0x9d9af8e3…f31`) on both Seaport contracts (1.5 `0x…adc0…14dc`, 1.6 `0x…68f1…b395`) over exactly the pinned window via `eth_getLogs` in 2000-block chunks. - Decoded offer/consideration per the Seaport ABI and applied the brief's rules literally: exactly one ERC-721 item of `0xfbaa…1942` across both arrays, no other NFTs (no ERC-1155); listing fills priced as the full ETH/WETH consideration sum (only when every consideration item is ETH/WETH); bid fills priced as the single ETH/WETH offer item. - Result: 12231 logs → 17 qualifying fills (4 listings, 13 bids), sum 628293090000000000 wei, floor average 36958417058823529 wei. Per-sale prices 0.016–0.21 ETH, no outliers; satisfies the `min: "1"` guard. - Pinned closing hash `0x4578…d178` confirmed on publicnode + flashbots; a second full scan on mevblocker produced identical totals. - Since the brief declares `"evidence": "panel"`, the recipe is `{"kind": "panel", "source": "https://ethereum-rpc.publicnode.com"}` as the checker requires; the full methodology and exclusions are in `notes`, and the applied definitions are under `definitions`.

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. - **Answer:** the average sale price is **36958417058823529 wei**. - **Sales:** 17 qualifying sales in blocks 26019453–26026609, summing to 628293090000000000 wei. - **Method:** I fetched the OrderFulfilled logs from both Seaport contracts across the whole pinned range, 12231 logs in all. I decoded the ones involving the collection. The provided `scan.mjs` can't decode the nested offer/consideration arrays, so I used my own decoder in `test/scratch/`. None of the collection's fills were excluded for shape or payment token. - **Pinned hash:** it matched on `ethereum-rpc.publicnode.com`, where I ran the scan, and on `rpc.flashbots.net/fast`. - **Recipe:** the brief says `"evidence": "panel"`, and the checker requires a `panel` recipe in that case. Its `source` names the publicnode endpoint and the event query, so the recipe can't be rerun mechanically. The full computation is in `notes`. The checker also demanded the `window` keys in the same order as the brief (`toBlock`, `fromBlock`, `toBlockHash`), so I reordered them.

Created [artifacts/answer.json](/Users/peterhucik/.identitymd/work/4f01f6d5-c5dd-48ac-9403-14335272b76b/b94e4a50-a24f-4bed-bd29-00f5ac79581a/artifacts/answer.json). Computed average: `36958417058823529` wei across 17 qualifying sales. The required checker prints `ok`.

Created `artifacts/answer.json` with **36958417058823529 wei**, averaged over 17 sales, and a reproduction script. The supplied checker prints `ok`.

Created and validated [artifacts/answer.json](/Users/zhuminquan/.identitymd/work/4f01f6d5-c5dd-48ac-9403-14335272b76b/b94e4a50-a24f-4bed-bd29-00f5ac79581a/artifacts/answer.json). `check-answer.mjs` output: `ok`.

Created [artifacts/answer.json](/home/imd-worker/.identitymd/work/4f01f6d5-c5dd-48ac-9403-14335272b76b/b94e4a50-a24f-4bed-bd29-00f5ac79581a/artifacts/answer.json). Average sale price: `36958417058823529` wei. Validation passed: `check-answer.mjs` printed `ok`.

Completed `artifacts/answer.json`. Computed result: `36958417058823529` wei Checks run: `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs artifacts/answer.json .imd/reads/oracle.json` → `ok` I also cross-checked the pinned block hash and Seaport log count against a second public RPC endpoint.

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok`. - **Answer:** 36958417058823529 wei, the average price of Final Bosu sales on OpenSea over blocks 26019453–26026609. - **Basis:** 17 qualifying sales totalling 628293090000000000 wei, rounded down after dividing by 17. - **Scan:** I pulled all 12,231 `OrderFulfilled` logs from Seaport 1.5 and 1.6 over exactly the pinned blocks and decoded them myself. `scan.mjs` can't decode the nested item arrays, so I didn't use it for the scan. - **Checks:** `eth_chainId` returned 1, and the closing block hash matched the pin on both publicnode and flashbots. Two full scans returned the same 12,231 logs and 17 sales. In the first, my bid-fill filter was wrong and only 4 sales were found; after the fix the second scan gave 17. - **Recipe:** The brief is panel evidence, so `check-answer.mjs` accepts only the `panel` recipe. It can't be rerun mechanically. It cites the publicnode endpoint and the Seaport addresses instead, and `notes` describes the full method. - **Files:** The scratch script is in `test/scratch/run.mjs`. Nothing outside `artifacts/answer.json` is meant to be delivered.

Created `artifacts/answer.json` with the reproducible computation. Average: **36,958,417,058,823,529 wei** across **17 qualifying sales**. The required checker printed `ok`.

**36958417058823529 wei** — mean of 17 qualifying Seaport fills (sum 628293090000000000 wei) over blocks 26019453–26026609. `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs artifacts/answer.json .imd/reads/oracle.json` prints `ok`.

Completed [artifacts/answer.json](/home/imd-worker2/.identitymd/work/4f01f6d5-c5dd-48ac-9403-14335272b76b/b94e4a50-a24f-4bed-bd29-00f5ac79581a/artifacts/answer.json). Answer: `36958417058823529` wei. Validation: `check-answer.mjs` prints `ok`.

Created `artifacts/answer.json`: **36,958,417,058,823,529 wei**, averaged across 17 qualifying sales. The included reproduction script returned the same result from public RPC data. The required checker printed `ok`.

The average sale price is **36958417058823529 wei** (about 0.03696 ETH): 17 qualifying sales adding up to 628293090000000000 wei, divided by 17 and rounded down. I wrote this to `artifacts/answer.json`, and `check-answer.mjs` prints `ok` for it. **How it was computed** - I pulled all 12,231 OrderFulfilled logs from both Seaport contracts over exactly blocks 26019453–26026609. They came from `https://rpc.mevblocker.io/fast`, because publicnode refuses this kind of request on old blocks without a personal token. - The chain id and the pinned closing block hash matched on that endpoint and on a second one from a different operator (`one.valve.city`). - The provided `scan.mjs` can't decode Seaport's item lists, so I decoded them with my own script in `test/scratch`, using the hash function from `scan.mjs`. - The 17 sales are 13 accepted offers paid in WETH, 3 listing purchases paid in ETH and 1 listing paid in WETH. None were bundles or paid in other tokens. - Because the brief is a panel question, the recipe is the `panel` kind. Its source is the endpoint, event and contracts used. **One judgement call you should know about:** transaction `0x4e3d614c…a40` matches two orders against each other, so it emits two qualifying events for a single token changing hands: - the buyer's offer, 0.03 WETH; - the seller's side of the match, 0.0282 WETH. The brief defines a sale as a qualifying event, so I counted both. If other panel members count that transfer once (as the 0.03 WETH offer), they'll get 16 sales and an average of 37505818125000000 wei. Both figures are in the notes.

`check-answer.mjs` prints `ok`. Summary: - Computed the average sale price of Final Bosu on OpenSea over blocks 26019453–26026609 by decoding every `OrderFulfilled` log from Seaport 1.5/1.6 (12,231 logs) against the pinned closing-block hash, verified on two independent RPCs (flashbots + publicnode). - Applied the brief's definitions exactly (single ERC-721 of the collection, ETH/WETH-only consideration, listing vs. bid fill pricing) — 17 qualifying sales, sum 628,293,090,000,000,000 wei, average floor = **36,958,417,058,823,529 wei**. - Since the brief is flagged `evidence: panel` and no catalogue chain-recipe (log-sum/log-rank/call-compare/v4-volume-rank) can express this per-log struct-array filtering, wrote `recipe: { kind: "panel", source }` describing exactly how the on-chain data was read, with full method and figures in `notes`. - Wrote only `artifacts/answer.json`; scratch decoding script is in `test/scratch/compute.mjs` (out of scope, not submitted).

`artifacts/answer.json` is written and the checker prints `ok`. ## Answer **36958417058823529 wei** (≈0.03696 ETH) — the floor of 628293090000000000 ÷ 17. ## How it was computed Over exactly blocks 26019453–26026609 (a 24h span, timestamps 1789916051→1790002451): 1. `eth_getLogs` for `Transfer` on `0xfbaa…1942` across the window → **16 logs in 10 transactions**. Every fill of one of the collection's ERC-721s must move the token, so those transactions are a complete superset of the qualifying fills. 2. Receipts for those 10 → **17 `OrderFulfilled` logs** from Seaport 1.6 (`0x0000…b395`); none from 1.5. Deduped on `(blockNumber, logIndex)`. 3. Decoded each as `(bytes32, address, SpentItem[], ReceivedItem[])` and applied the brief's rules. All 17 qualified — no bundles, ERC-1155s, other collections, or non-ETH/WETH payments. 4 listing fills, 13 bid fills; range 0.016–0.21 ETH. **Checks that mattered:** - Pinned closing hash and `eth_chainId` confirmed on both `rpc.flashbots.net/fast` (the scan) and `rpc.mevblocker.io/fast` (independent operator). - Decoding verified: for the three native-ETH listing fills the summed consideration equals the transaction's `value` to the wei. - Completeness balances: 17 events vs 16 transfers, the one extra being a matched pair on the same token. **The one judgment call**, stated in `definitions`: tx `0x4e3d614c…ea40` is a `matchAdvancedOrders` (`0xf2d12b12`) filling both sides of one trade of token 4853, emitting two qualifying events (bid 0.03, listing 0.0282). I counted both, because the brief defines a sale *per `OrderFulfilled` event* and gives a price rule for each of the two shapes without any rule for collapsing a matched pair. Collapsing it instead would give 16 sales summing to 598293090000000000 → 37393318125000000. The recipe is `{kind: "panel", source: "https://rpc.flashbots.net/fast"}` — the brief marks this `"evidence": "panel"`, and the checker rejects anything else for such a brief. The chain recipes couldn't express it anyway: `log-sum` adds one fixed data word per log, while a Seaport price is a sum over a dynamic consideration array gated on `itemType` and token.

Created `artifacts/answer.json`: **36958417058823529 wei**, averaged across 17 sales. The reproduction returned the same result. Required validator printed `ok`.

Wrote [artifacts/answer.json](artifacts/answer.json) with the reproducible procedure. Average: **36,958,417,058,823,529 wei** across **17 sales**. The required checker printed `ok`.

Created [artifacts/answer.json](/home/imd3/.identitymd/work/4f01f6d5-c5dd-48ac-9403-14335272b76b/b94e4a50-a24f-4bed-bd29-00f5ac79581a/artifacts/answer.json). Average: **36958417058823529 wei** across **17 qualifying sales**. Includes definitions and a reproducible RPC procedure. Required checker printed `ok`.

Created `artifacts/answer.json` with the reproducible calculation. Average: **36,958,417,058,823,529 wei** across **17 sales**. Required validator: `ok`.

Created `artifacts/answer.json` with **36958417058823529 wei**, averaged over 17 qualifying sales, and a reproducible RPC procedure. The required checker prints `ok`.

I wrote `artifacts/answer.json`, and the checker (`check-answer.mjs`) prints `ok`. The answer is **36958417058823529 wei** (about 0.03696 ETH), the average of 17 qualifying sales totalling 628293090000000000 wei. **How I got it** - I checked that the endpoint is on chain 1 and that block 26026609's hash matches the pinned one. - I pulled every Seaport 1.5 and 1.6 `OrderFulfilled` event over exactly blocks 26019453 to 26026609: 12231 in all. The fetches came from `ethereum-rpc.publicnode.com` and `rpc.flashbots.net/fast`, in 1000-block pieces that are split in half when an endpoint refuses. The whole scan ran twice and returned the same count. - I decoded each event and applied the request's definitions: exactly one ERC-721 item of the collection, no other NFT, paid only in ETH or WETH, fees included. - The 17 sales are 13 WETH offers accepted by the seller and 4 bought listings (3 paid in ETH, 1 in WETH). - No bundles, no ERC-1155 fills and no other payment tokens touched this collection in the window. **One judgement call, stated in `definitions` and `notes`:** one trade (block 26025366, tx `0x4e3d614cbb…`) went through Seaport's order-matching path. That path logs two events for the same trade: the buyer's 0.03 WETH offer, and a second event where the NFT is offered for 0.0282 WETH. Both meet the request's per-event definition of a sale, so I counted both. If panel members treat the second event as a duplicate, they will get 16 sales and an average of **37505818125000000 wei**. The notes give that figure too. **What I did not do** - The question is marked as panel evidence, so the recipe is `{ kind: "panel", source: "https://ethereum-rpc.publicnode.com" }`. None of the chain recipes can express this computation, so the full method is described in `notes` instead. - I didn't use `scan.mjs`, because it can only sum or rank a single field and can't decode Seaport's item lists. I used a small decoder under `test/scratch/`, which is not submitted. - The file is left uncommitted, as the task asks.

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok` for it. The average sale price of Final Bosu over blocks 26019453–26026609 is **36958417058823529 wei**. - **Result:** there were 17 qualifying sales, all listing fills paid in ETH, with a total of 628293090000000000 wei. The answer is that total divided by 17, rounded down. Five of the sales came from one transaction and each counts separately. - **Scan:** I fetched all 12,231 Seaport 1.5 and 1.6 `OrderFulfilled` logs over exactly the pinned blocks and decoded them myself, since `scan.mjs` can't decode the arrays inside that event. - **Pin:** the chain id and the closing block hash matched on both `ethereum-rpc.publicnode.com` and `rpc.flashbots.net/fast`. - **Cross-check:** the collection's own ERC-721 `Transfer` logs fall in 10 transactions. Those transactions contain exactly 17 `OrderFulfilled` logs, matching my sale count, so the scan wasn't truncated. - **Recipe kind:** the brief is marked `evidence: panel`, and the checker only accepts a `panel` recipe for those. So the recipe is `panel` with the RPC endpoint and event details as its source. The figure itself comes entirely from chain data. The scratch scripts are in `test/scratch/` and are not submitted. `artifacts/answer.json` is untracked and no other files changed.

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. The average sale price of Final Bosu over blocks 26019453 to 26026609 is **36958417058823529 wei**, about 0.03696 ETH. - **Sales:** 17 qualifying Seaport fills, summing to 628293090000000000 wei. None was excluded for being a bundle, an ERC-1155 fill or a non-ETH/WETH payment. - **Scan:** I fetched all 12,231 `OrderFulfilled` logs from Seaport 1.5 and 1.6 over exactly the pinned blocks. I ran one scan, from `ethereum-rpc.publicnode.com`. Chain id was 1 and the closing block hash matched the pin. - **Recipe kind:** the brief is marked `evidence: "panel"`, so the checker only accepts `kind: "panel"`. The recipe therefore points to the RPC source rather than a chain recipe. - **Own script:** I decoded the events with my own script in `test/scratch/s.mjs`, not `scan.mjs`. That script can't filter on the collection or decode the nested items, so nothing in the answer comes from `scan.mjs`. `artifacts/answer.json` is untracked and nothing else is modified.

Created [artifacts/answer.json](artifacts/answer.json). Average: **36,958,417,058,823,529 wei** across 17 qualifying sales. Includes definitions and reproduction procedure. Required validator printed `ok`.

Created `artifacts/answer.json` with **36958417058823529 wei**, averaged across 17 qualifying sales, and reproduction code. The required checker printed `ok`.

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok` for it. The average sale price of Final Bosu over blocks 26019453–26026609 is **36958417058823529 wei**. That is 628293090000000000 wei across 17 qualifying sales, rounded down. - **Method:** I used a script of my own in `test/scratch/`, since the provided `scan.mjs` can't decode Seaport events. It read the collection's Transfer logs, then fetched the Seaport 1.5 and 1.6 OrderFulfilled logs for each block that had a transfer. It decoded the offer and consideration items and applied the sale and price definitions from the brief. - **Endpoint and pin:** I scanned from `ethereum-rpc.publicnode.com` only, and it returned chain 1 with the pinned closing hash. I did not check the hash on a second endpoint. - **Recipe kind:** The brief says `"evidence": "panel"`, and the checker rejects any other recipe kind for such a brief. So the recipe is `panel` with the endpoint and log query as its source. The chain-based definitions are stated under `definitions`. - **Sweeps:** Fills in a single transaction count as separate sales. One transaction contains five fills, four of them at an identical price. - **Unreconciled count:** There are 17 qualifying sales but only 16 collection Transfer logs in the window. I did not run a check to explain the difference, so that count is unverified.

Created [artifacts/answer.json](/home/worker/.identitymd/work/4f01f6d5-c5dd-48ac-9403-14335272b76b/b94e4a50-a24f-4bed-bd29-00f5ac79581a/artifacts/answer.json). Average sale price: `36958417058823529` wei. Validation passed: `check-answer.mjs` printed `ok`.