19bf33cd-a1c7-490a-81f2-73a763962efdIMD JOB

I wrote `artifacts/answer.json` with an answer of **155594871794871794** wei, about 0.1556 ETH. `check-answer.mjs` prints `ok`. - **How I got it:** I pulled every `OrderFulfilled` log from both Seaport contracts over exactly blocks 26019451–26026607. That is 12,231 logs, with no duplicates and no truncated chunks. I decoded the offer and consideration arrays and priced the fills as the request's definitions say. - **Result:** 39 qualifying sales, 14 listing fills and 25 bid fills, with a total of 6,068,200,000,000,000,000 wei. The floor of the mean is the figure above. No fills were excluded for other payment tokens or bundles. - **Pin check:** chain id 1 and the closing hash `0x8a84f5aa…cdec2` matched on publicnode, flashbots, mevblocker and drpc. I scanned from publicnode only. - **Recipe kind:** the brief has `"evidence": "panel"`, and the checker only accepts a `panel` recipe for that. So the recipe is `{kind: "panel", source: <publicnode URL plus the getLogs filter>}`. The chain method itself is written up in `notes`. - **Scan tooling:** the delivered `scan.mjs` can't decode the dynamic arrays in `OrderFulfilled`. I used a small Node script in `test/scratch/` instead, which isn't submitted. Its stderr went to `test/scratch/sales.err`, which stays inside the allowed scratch directory. - **Paths:** `artifacts/answer.json` is the only output and is left untracked, and I changed nothing else.

The average Creepz sale price over blocks 26019451 to 26026607 was **155594871794871794 wei (about 0.1556 ETH)**. That is 39 qualifying sales totalling 6068200000000000000 wei, rounded down. The answer is written to `artifacts/answer.json`, and `check-answer.mjs` prints `ok` for it. **How I got it** - **Scan:** a small Node script in `test/scratch/` fetched every OrderFulfilled event from both Seaport contracts across exactly the pinned blocks, in 500-block chunks. No chunk was refused, and I checked that every event's block was inside the window. That came to 12231 events in total. - **Filtering:** I applied the brief's own definitions of a sale and a price to each event. The exact rules are written out under `definitions` in the answer file. - **Recipe:** the brief marks this as a panel question, so the recipe is `kind: "panel"`, with a source naming the RPC request that returned the events. - **Endpoints:** before scanning, the chain id and the pinned closing-block hash matched on `https://rpc.mevblocker.io/fast`, which served all the logs. I confirmed the hash again on `https://rpc.flashbots.net/fast`, a different operator. `https://ethereum-rpc.publicnode.com` refused (it wants an archive token) and was dropped. - **Checks not done:** I ran one full scan only. A truncated reply from the endpoint would go unnoticed, but 12231 events over about 7,150 blocks is a reasonable count. **Decision for the reviewer:** many sales appear as two events, for example 0.146 and 0.13724 ETH. This looks like an accepted offer settled by matching two orders: one event records the buyer's full WETH offer, the other the seller's amount after fees. The brief counts every qualifying event, so I counted both halves of each pair, and the notes say so. If the two were merged per transaction, the average would be different. The previous attempt was rejected for leaving an `err.log` in the workspace. This time all error output went to `/tmp`, and the only file I wrote is `artifacts/answer.json`, left untracked.

Created `artifacts/answer.json` with the average **155594871794871794 wei** across **39 qualifying sales**, plus reproduction code. The required checker printed `ok`.

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. The average sale price of Creepz by OVERLORD over blocks 26019451–26026607 is **155594871794871794 wei** (about 0.1556 ETH). - **Scan:** I fetched Seaport 1.5 and 1.6 `OrderFulfilled` logs over exactly the pinned blocks and decoded them by hand. Chain id 1 and the closing hash matched the pin on `ethereum-rpc.publicnode.com` and on `rpc.flashbots.net/fast`. - **Result:** 12,231 events were scanned, of which 39 qualified (14 listing fills and 25 bid fills). None were excluded for being paid in another token. They sum to 6068200000000000000 wei, and floor(sum / 39) gives the answer. - **Counting choice:** I counted each qualifying event once, as the pinned definition says. The 39 events sit in 21 transactions, and several look like listing/bid pairs from one matched trade, both of which count. If the panel dedupes per trade instead, the average would differ. I stated this under `definitions`. - **Recipe:** The brief says `evidence: "panel"`, so the recipe kind is `panel`, with `https://ethereum-rpc.publicnode.com` as the source URL. The exact procedure is in `notes`. - **Fault from the rejected attempt:** I wrote nothing outside `artifacts/answer.json`, apart from my scratch script in `test/scratch/`. Stderr went to `/tmp`, so no `err.log` was created.

Created `artifacts/answer.json` with the reproduction steps. Average: **155594871794871794 wei**, across 39 qualifying sales. The required checker printed `ok`.

Created [artifacts/answer.json](artifacts/answer.json) with the reproducible calculation. Average: **155594871794871794 wei** across **39 sales**. Validation printed `ok`.

Created `artifacts/answer.json` with an average of **155594871794871794 wei** across 39 sales. The embedded procedure reproduced the answer from public RPC data. The required validator printed `ok`.

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. The answer is **155594871794871794** wei. That is 39 qualifying sales totalling 6,068,200,000,000,000,000 wei, rounded down. I scanned 12,231 `OrderFulfilled` logs from Seaport 1.5 and 1.6 over blocks 26019451–26026607. No log was skipped or duplicated. Every log that touched the collection fit the sale definition, so none were excluded. - **Method:** I used my own Node script, not the delivered `scan.mjs`, because that script can't decode Seaport's nested offer and consideration arrays. It lives in `test/scratch/` and isn't submitted. - **Recipe kind:** the brief says `"evidence": "panel"`, so the checker only accepts `{kind: "panel", source}`. My first attempt at a `log-sum` recipe failed the check. The source is the public RPC URL plus the Seaport addresses and the event topic, so a rerun reads the same public data. - **Endpoint and pin:** I read from `https://ethereum-rpc.publicnode.com` only. The chain id was 1 and the closing block hash matched the pin. I did not check the hash on a second operator's endpoint. I wrote `artifacts/answer.json` only, and it is untracked.

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. The average sale price is **155594871794871794 wei**. - **Sales:** 39 qualifying fills, totalling 6068200000000000000 wei. The average is that total divided by 39, rounded down. - **Scan:** I scanned 12,231 `OrderFulfilled` logs from both Seaport contracts over blocks 26019451 to 26026607, using a scratch script rather than `scan.mjs`. `scan.mjs` can't decode the event arrays, so I decoded them and applied the brief's sale and price rules in `test/scratch/sales.mjs`. - **Chain check:** The endpoint reported chain id 1, and the closing block hash matched the pin. - **Endpoints:** I read from `https://ethereum-rpc.publicnode.com`, and the script could fall back to three other public endpoints on failure. I didn't check the hash on a second operator. - **Recipe kind:** The brief says `evidence: "panel"`, so the checker only accepts a `panel` recipe. I put the RPC URL and the log query in its `source` field. Because of that, the deployer's rerun can't reproduce the average from a chain recipe. It has to follow the description in `notes`. - **Paths:** I wrote nothing outside `artifacts/answer.json` and `test/scratch/`. Git shows no tracked changes.

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok` for it. The average sale price is **155594871794871794 wei**, about 0.1556 ETH. - **Scan:** I fetched every Seaport `OrderFulfilled` log (12,231 in all) from both the 1.5 and 1.6 contracts over exactly blocks 26019451 to 26026607. The endpoint was `https://ethereum-rpc.publicnode.com`, and I decoded the logs locally. - **Pin check:** The chain id and the closing block hash matched the pin on publicnode, `rpc.flashbots.net` and `rpc.mevblocker.io`. - **Sales:** 39 sales qualified, 14 listing fills and 25 bid fills, totalling 6068200000000000000 wei. The average is that total divided by 39, rounded down. - **Recipe kind:** The brief says `"evidence": "panel"`, and the checker only accepts a `panel` recipe for such a brief. The recipe is therefore `{kind: "panel", source: <the RPC endpoint and query>}`, even though the figure comes from chain data. The exact query is spelled out in `notes`. - **Fix from the rejected attempt:** The earlier `path_violation` came from writing `err.log`. This time the only file I wrote outside scratch is `artifacts/answer.json`. My scan script is in `test/scratch/sales.mjs`, which is not submitted, and I did not use the bundled `scan.mjs`, because it can't decode the Seaport item arrays. `git status` shows no tracked changes.

wrote outside the task's allowed paths: err.log

FAILURE: path_violation

Done. `artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. **Answer: `155594871794871794` wei** (≈0.15559 ETH), the floor of 6068200000000000000 / 39. How it was computed: - Confirmed `eth_chainId` = `0x1` and that block 26026607 hashes to the pinned `0x8a84f5aa…cdec2`; the window spans exactly 86400 seconds. - Scanned `eth_getLogs` for the `OrderFulfilled` topic on Seaport 1.5 and 1.6 across 26019451–26026607 in 250-block chunks (halving on refusal): **12231** OrderFulfilled logs, **39** naming the collection, all 39 qualifying — 25 bid fills, 14 listing fills, all on Seaport 1.6. - Cross-checked completeness a second way first: 33 Creepz ERC-721 `Transfer` logs → 27 transactions → their receipts' Seaport logs yielded the same 39 events and the same sum. Any fill holding a Creepz ERC-721 must move the token, so the two candidate sets are complete for the same reason and they agree. One judgment call, stated in `definitions.matchedOrders` and `notes`: 14 of the 39 events are the seller-side counter-order of a matched bid (same tx, same token id — e.g. token 8419 at block 26024346 shows 0.146 ETH gross and 0.13724 net after the 1% OpenSea fee and 5% royalty). The request defines a sale *per OrderFulfilled event* and excludes only bundles and ERC-1155, so I counted both halves — that reading adds no rule the brief doesn't state. The alternative (one sale per matched pair at the gross bid price) is 25 sales averaging `157000000000000000` wei; it's recorded in the answer so a reader can see the fork. Because the brief sets `"evidence": "panel"`, the recipe is the `panel` kind — the checker rejects any chain recipe here — with the exact `eth_getLogs` call as its source.

Created `artifacts/answer.json` with the reproducible computation. Average: **155594871794871794 wei** across **39 qualifying sales**. The required validator printed `ok`.

Created [artifacts/answer.json](/home/imd-worker/.identitymd/work/19bf33cd-a1c7-490a-81f2-73a763962efd/bd285ab8-ef43-4573-bf32-a0813726784c/artifacts/answer.json). Average sale price: `155594871794871794` wei. Validation passed: `check-answer.mjs` printed `ok`.

Created [artifacts/answer.json](/home/imd/.identitymd/work/19bf33cd-a1c7-490a-81f2-73a763962efd/bd285ab8-ef43-4573-bf32-a0813726784c/artifacts/answer.json). Average sale price: `155594871794871794` wei. The supplied validator prints `ok`.

Created [artifacts/answer.json](/home/imd-worker/.identitymd/work/19bf33cd-a1c7-490a-81f2-73a763962efd/bd285ab8-ef43-4573-bf32-a0813726784c/artifacts/answer.json). Answer: `155594871794871794` wei. Validation passed: - `check-answer.mjs`: `ok` - Arithmetic verification: `ok`

Done. `artifacts/answer.json` is written, untracked (the repo ignores `artifacts/`), and `check-answer.mjs` prints `ok`. **Answer: 155594871794871794 wei** (≈0.1556 ETH), from a sum of 6068200000000000000 wei over 39 qualifying fills. How it was computed: - Confirmed `eth_chainId` = 1 and that block 26026607 hashes to the pinned `0x8a84f5aa…cdec2` on two independent operators (`rpc.flashbots.net/fast`, `ethereum-rpc.publicnode.com`). - Pulled every Seaport 1.5/1.6 `OrderFulfilled` log over blocks 26019451–26026607 (12,231 events), decoded the `SpentItem[]`/`ReceivedItem[]` arrays, and applied the brief's rules. 39 events touch Creepz and all 39 qualify — no bundles, no ERC-1155, no non-ETH/WETH payment, nothing dropped for shape. 14 listing fills, 25 bid fills; prices 0.1316–0.181 ETH. - Cross-checked two ways: identical totals from both endpoints, and a cheaper first pass narrowed to the 27 blocks carrying a Creepz `Transfer` found the same 39 events, so the whole-window pass was not silently truncated. One judgment call worth your attention, recorded in `definitions.unit_of_sale` and in `notes`: 14 of the 39 events are the seller-side counter-order of a WETH offer matched in the same transaction, carrying the net-of-fee amount (0.94× the paired bid) for a token whose gross price the bid event already counts. The brief defines a sale as the *event*, not the token transfer, and says nothing about mirrors, so I applied it literally. Deduplicating to the 25 distinct (transaction, token id) sales and keeping the gross side would yield 157000000000000000 wei instead — that alternative is stated explicitly in `notes` so the panel can see the fork.

Wrote `artifacts/answer.json` with **155594871794871794 wei**, averaged over 39 qualifying sales, and reproduction code. Required validator printed `ok`.

Created [artifacts/answer.json](artifacts/answer.json) with the reproducible computation. Average: **155594871794871794 wei** across **39 sales**. Required validator printed `ok`.

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FAILURE: runtime_error

I wrote `artifacts/answer.json`, and `check-answer.mjs` prints `ok` for it. The average sale price is **155594871794871794 wei**: 39 qualifying sales totalling 6068200000000000000 wei, rounded down. - **Method:** I did not use `scan.mjs`. Seaport events can't be filtered by collection, so I wrote a small script in `test/scratch/`. It pulled the collection's ERC-721 `Transfer` logs over blocks 26019451–26026607, which gave 27 transactions. It then read each transaction's receipt and decoded the Seaport 1.5 and 1.6 `OrderFulfilled` events by hand, applying your sale and price definitions. - **Pin:** the closing block hash matched the pinned one on publicnode. I did not check a second operator's endpoint for it. - **Endpoints:** publicnode, with flashbots and mevblocker as fallbacks. - **Recipe kind:** the brief says `"evidence": "panel"`, and the reference allows only the `panel` recipe for such a brief. The recipe is therefore `panel` with publicnode as its source. That recipe only points at a source; it doesn't encode this Seaport computation, so the deployer can't rerun it as a chain recipe. The method is described in `notes`. - **Same-transaction fills:** several transactions contain more than one qualifying fill, so 39 sales come from 27 transactions. Each fill is counted separately, as the definitions say. I had to reorder the `window` keys to match the brief's order, because the checker rejected the other order.

`check-answer.mjs` prints **ok**. ## Answer: 155594871794871794 wei **How it was computed** (blocks 26019451–26026607, chain 1, pin confirmed on two operators): 1. `eth_getLogs` for the collection's ERC-721 `Transfer` topic over the whole window → 33 logs in 27 distinct blocks. Every Seaport ERC-721 fill emits a `Transfer`, so those blocks bound the search with no loss. 2. `eth_getLogs` in exactly those blocks for `OrderFulfilled` on Seaport 1.5 + 1.6 → 150 events, ABI-decoded (`SpentItem[]` offer, `ReceivedItem[]` consideration). 3. 39 touch the collection and all 39 qualify — no bundles, no ERC-1155, no non-ETH/WETH payment. Sum 6068200000000000000 wei ÷ 39 = **155594871794871794**. **The one judgement call, stated in `definitions`:** 14 transactions match a collection bid against a listing, and Seaport emits two `OrderFulfilled` events for the same token — the bidder's order (gross, e.g. 0.163 ETH) and the seller's order (net of the 1% OpenSea fee and 5% royalty, 0.15322). The brief defines a sale *as an event* meeting a predicate and lists its exclusions exhaustively without any rule for collapsing a matched pair, so both are counted. The alternative reading — one sale per matched trade — gives 25 sales averaging exactly 157000000000000000 wei; it's recorded in `notes` but not used, since it needs a dedup rule the request doesn't give. **Recipe:** `{ kind: "panel", source }`, as the brief's `"evidence": "panel"` requires. None of the four chain recipes can express this — `log-sum` reads one fixed data word and cannot decode Seaport's dynamic item arrays, and no kind divides. `notes` says so explicitly. **Verification:** scanned whole on `ethereum-rpc.publicnode.com`, then re-run end to end on `mainnet.gateway.tenderly.co` (different operator) — identical 39 sales, identical sum, identical average, pin matching on both. `rpc.flashbots.net/fast` 429'd every `eth_getLogs` and was abandoned. Only `artifacts/answer.json` was written; scratch work is in `test/scratch/`.

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FAILURE: runtime_error

Completed `artifacts/answer.json`. Computed result: `155594871794871794` wei Verification: `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs artifacts/answer.json .imd/reads/oracle.json` prints `ok`.

Done. The answer is **155594871794871794 wei** (~0.1556 ETH) — the floor-rounded average of 39 qualifying Creepz sales totaling 6068200000000000000 wei, and `artifacts/answer.json` passes the plane's check with `ok`. How it was computed: - **Scan**: I wrote a scratch decoder in `test/scratch/creepz-avg.mjs` (following `scan.mjs`'s chunking, retry, and pin-confirmation pattern, since `OrderFulfilled`'s dynamic struct arrays can't be summed with `--sum data:N`). It fetched all 12,231 `OrderFulfilled` logs from Seaport 1.5 and 1.6 over exactly blocks 26019451–26026607 via `https://rpc.flashbots.net/fast`, confirming `eth_chainId` = 1 and the pinned closing hash on that endpoint; the hash was also cross-checked on `ethereum-rpc.publicnode.com`, a second operator (my first cross-check hit the wrong block from a bad hex conversion — redone correctly). - **Filter**: exactly the brief's definitions — exactly one itemType-2 item of the Creepz contract across offer+consideration, no other NFT of any kind; listing fills priced as the sum of consideration amounts with every consideration item native ETH or WETH; bid fills priced as the single ETH/WETH offer amount. 39 fills qualified; none of the logs failed to decode. - **Answer file**: `artifacts/answer.json` carries the request id, chain, and window copied byte-for-byte from the brief (the check compares the window key order too), the `panel` recipe the brief's `"evidence": "panel"` requires with the RPC URL as source, the sum as `figure`, and the choices the request left open (per-event counting including both sides of a match, no zone filter, bid-fill consideration tokens unrestricted) stated under `definitions`. The file is 3,122 bytes, untracked (excluded via `.git/info/exclude`), and nothing outside the allowed paths was modified.

Created `artifacts/answer.json` with the answer **155,594,871,794,871,794 wei**, averaged over 39 qualifying sales, and a reproducible RPC procedure. The required validator printed `ok`.

Created [artifacts/answer.json](artifacts/answer.json) with the reproducible calculation. Average: **155594871794871794 wei** across **39 sales**. Required validator printed `ok`.

Created `artifacts/answer.json` with the reproduction procedure. Average: **155594871794871794 wei** across **39 qualifying sales**. Required validator printed `ok`.

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok`. The average sale price is **155594871794871794 wei**. That is 6068200000000000000 wei across 39 qualifying sales, rounded down. - **Window:** the closing block hash matched the pin on the publicnode endpoint. I did not cross-check it on a second operator. - **Method:** the scan script can't decode Seaport events, so I used a scratch script. It finds the 27 blocks in the window with a Transfer log from the collection. It then fetches Seaport 1.5 and 1.6 `OrderFulfilled` logs for those blocks and applies your definitions to each fill. Endpoints: publicnode, with flashbots and mevblocker as fallbacks. - **Recipe:** the request is panel-evidence, so the checker only accepts a `panel` recipe with a source URL. I gave the RPC endpoint and described the decode in `notes`. The deployer cannot mechanically rerun that recipe, so the panel's agreement on the answer is what counts. - **Scope:** I wrote only `artifacts/answer.json`. The scratch script is in `test/scratch/`.

Created `artifacts/answer.json` with the average **155594871794871794 wei** across 39 qualifying sales and a reproduction script. The required checker printed `ok`.

Done. `artifacts/answer.json` is written, passes `check-answer.mjs` (`ok`), and is left untracked. **Answer: `155594871794871794` wei** (~0.1556 ETH) How it was computed: - `eth_getLogs` for the `OrderFulfilled` topic on both Seaport 1.5 and 1.6 over exactly blocks 26019451–26026607, after confirming chain id 1 and the pinned closing hash. 12,231 logs; no chunk was refused. - Each log's data was ABI-decoded by hand (`test/scratch/avg.mjs`, Node with no dependencies) and filtered per the pinned definitions: exactly one ERC-721 (itemType 2) of `0x5946…b47d` and no other NFT; listing fills priced as the sum of consideration when every consideration item is ETH/WETH; bid fills priced as the ETH/WETH offer amount. - 39 qualifying sales (14 listings, 25 WETH bids, all on Seaport 1.6), sum 6,068,200,000,000,000,000 wei → 6.0682 ETH / 39 = 155594871794871794.87, rounded down. - Cross-checked on a second operator (`ethereum-rpc.publicnode.com`, 200-block chunks): identical pin, log count, sale count, sum and average — so the scan is whole, not truncated. Since the brief says `"evidence": "panel"`, the recipe is `{ kind: "panel", source: "https://rpc.flashbots.net/fast" }`, with the full method, filters and both endpoints stated in `notes` and every open choice (NFT-exclusion scope, one-log-one-sale, WETH counted 1:1) under `definitions`.

I wrote `artifacts/answer.json`. The average sale price comes out to **155594871794871794 wei** (about 0.1556 ETH), and the answer checker prints `ok`. **How I got it:** I pulled all 12,231 `OrderFulfilled` events from both Seaport contracts over exactly blocks 26019451–26026607, using `https://ethereum-rpc.publicnode.com`. It returned chain id 1 and the pinned closing block hash. I checked that hash on that one endpoint only, not on a second one. The scan script that came with the task can only count and add up raw log fields, and it can't read Seaport's item lists. So I used my own small decoder in `test/scratch/`, which isn't part of the submission. 39 events contain exactly one Creepz token and no other NFT, and all 39 were paid in WETH, so none were dropped for currency. The prices add up to 6.0682 ETH, and 6.0682 ETH ÷ 39, rounded down, is the figure above. **Decision for you:** 14 of those 39 events are the seller's side of an accepted offer. The same transaction also logs the buyer's side, so those 14 trades each appear twice. The request's definition counts every qualifying event, so I counted both halves. - **As submitted (both halves counted):** 39 sales, average 155594871794871794 wei. - **Each trade counted once:** 25 sales, average about 157000000000000000 wei (0.157 ETH). I summed these 25 with a quick floating-point command, so this number is approximate. Both figures and the reason are in the file's `notes`. If you'd rather submit the count-once figure, it's a quick change. **Other points:** - The request is marked as panel evidence, so the checker only accepts a `panel` recipe. Its `source` names the endpoint, both Seaport addresses, the event signature and the block range, so anyone can rerun the same read. - `git status` doesn't list `artifacts/answer.json` at all, so the repo probably ignores that folder. It isn't committed, which is what the task asks for; the uploader should pick it up.

Created [artifacts/answer.json](artifacts/answer.json) with the reproducible calculation. Average: **155,594,871,794,871,794 wei** across **39 sales**. Required validator printed `ok`.

Created [artifacts/answer.json](/home/worker/.imd/seat2/work/19bf33cd-a1c7-490a-81f2-73a763962efd/bd285ab8-ef43-4573-bf32-a0813726784c/artifacts/answer.json). Answer: `155594871794871794` wei. Validation: `check-answer.mjs` prints `ok`.

**155594871794871794 wei** (0.15559 ETH) — mean of 39 qualifying Seaport `OrderFulfilled` fills (sum 6068200000000000000 wei) over blocks 26019451–26026607, confirmed by a full 12,231-event scan of both Seaport contracts and by an independent transfer-first pass; pinned closing hash verified on dRPC and publicnode. `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs artifacts/answer.json .imd/reads/oracle.json` prints `ok`.

Created [artifacts/answer.json](artifacts/answer.json) with the reproduction procedure. Average: **155,594,871,794,871,794 wei** across **39 qualifying sales**. Required validator printed `ok`.

Created [artifacts/answer.json](/root/.identitymd/work/19bf33cd-a1c7-490a-81f2-73a763962efd/bd285ab8-ef43-4573-bf32-a0813726784c/artifacts/answer.json). Average sale price: `155594871794871794` wei. Validation passed: `ok`.

Created [artifacts/answer.json](/Users/peterhucik/.identitymd/work/19bf33cd-a1c7-490a-81f2-73a763962efd/bd285ab8-ef43-4573-bf32-a0813726784c/artifacts/answer.json). Average sale price: `155594871794871794` wei. The required checker prints `ok`.