8d6b54ff-5373-47aa-a692-873c2e9f01fcIMD JOB

Created [artifacts/answer.json](/home/imd-worker/.identitymd/work/8d6b54ff-5373-47aa-a692-873c2e9f01fc/a9797876-e174-41ea-8f5f-63ca9d5b96c9/artifacts/answer.json). Average sale price: **103084251400000000 wei** Validation passed: - Official checker: `ok` - 35 qualifying sales - Total: `3607948799000000000` wei - Pinned block hash confirmed with two RPC operators

Created `artifacts/answer.json`. Average: **103084251400000000 wei** across 35 qualifying sales. The included procedure reproduced the result from public RPC data, and the required checker printed `ok`.

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. The average sale price of Otherdeed Expanded over blocks 26019451 to 26026607 is **103084251400000000 wei** (about 0.1031 ETH). - **Why the last attempt failed:** the `artifacts/` directory didn't exist. I created it this time. Git shows nothing to commit; the file is untracked and outside version control. - **How I computed it:** - I pulled 12,231 `OrderFulfilled` logs from both Seaport contracts over exactly the pinned range from `ethereum-rpc.publicnode.com`, then decoded and filtered them myself. - `scan.mjs` can only sum or rank raw log words, so it couldn't do the Seaport decoding; I used a throwaway script in `test/scratch/`, which isn't submitted. - Chain id 1 and the pinned closing hash matched on publicnode and on `rpc.flashbots.net/fast`. - **Result:** 35 qualifying sales, 22 listing fills and 13 bid fills, summing to 3607948799000000000 wei. Two other fills of the collection were excluded under the price definition. - **Recipe kind:** the brief says `"evidence": "panel"`, and `check-answer.mjs` requires a `panel` recipe in that case. The recipe therefore only names the RPC and filters as its `source`, and the full method is in `notes`. - **Not run:** I did not cross-check the count against a second full scan, since the reference says one scan is enough.

Created `artifacts/answer.json` with the average: **103084251400000000 wei** across 35 qualifying sales. Included the RPC reproduction procedure. The required validator printed `ok`.

The average sale price of Otherdeed Expanded over the pinned window was **103084251400000000 wei** (about 0.1031 ETH). That comes from 35 qualifying sales totalling 3607948799000000000 wei, rounded down. It's written to `artifacts/answer.json`, and `check-answer.mjs` prints `ok` for it. **How I got it:** - **Data:** I pulled every OrderFulfilled event from both Seaport contracts over exactly blocks 26019451–26026607 (12231 events, none outside the window). I used `https://ethereum-rpc.publicnode.com`, with `https://eth.drpc.org` as a fallback. - **Script:** the supplied `scan.mjs` can't read Seaport's item lists, so I wrote a small Node script in `test/scratch/` (not submitted). It reads the offer and consideration items of each event and applies the request's definitions as written. - **Checks:** both endpoints gave the pinned closing block hash. I ran the full scan twice (the second time only to see what was excluded) and got the same result both times. **Recipe:** the request says `"evidence": "panel"`, so the checker only accepts a `panel` recipe with a `source`. The source names the endpoint, the event, both contracts and the block range, so anyone can repeat the scan. **Decision for review:** 37 events had exactly one token from the collection and no other NFT, but I excluded 2 of them. In each, the seller's side of the trade had two items: one was the NFT plus WETH, the other was two WETH payments. The price definition only covers a trade where that side has a single item, so I followed it literally. Including them would change the average. This is recorded under `definitions` and `notes`. The previous attempt failed because the `artifacts/` folder didn't exist. This time I created it and the file is in place. It is untracked and I did not commit it; nothing else was written outside `test/scratch/`.

I wrote `artifacts/answer.json`, and `check-answer.mjs` prints `ok` for it. The average sale price is **103084251400000000 wei** (about 0.1031 ETH), which is 3607948799000000000 wei over 35 qualifying sales, rounded down. - **Failure fixed:** the previous attempt failed because the `artifacts/` directory didn't exist. It now does, and `git status` shows no tracked changes. - **Sales:** 22 were listing fills and 13 were bid fills. The cheapest was 0.07802 ETH. None of the 12,231 Seaport 1.5 and 1.6 fills in the window were duplicates or mixed-NFT fills. - **Pin:** `eth_chainId` returned 1, and the closing block hash matched the pinned one on both `ethereum-rpc.publicnode.com` and `rpc.mevblocker.io`. - **Method:** `scan.mjs` can't decode the dynamic offer and consideration arrays in `OrderFulfilled`, so I wrote a small decoder in `test/scratch/sales.mjs`. That folder isn't submitted, so the recipe is reproducible only from the notes. - **Recipe:** the brief says `"evidence": "panel"`, so the checker only accepts `kind: "panel"`. The recipe names the RPC source, and the notes and definitions describe the decoding rules.

Completed [artifacts/answer.json](/home/imd-worker/.identitymd/work/8d6b54ff-5373-47aa-a692-873c2e9f01fc/a9797876-e174-41ea-8f5f-63ca9d5b96c9/artifacts/answer.json). Computed floor average: `103084251400000000` wei. Validated with the supplied checker: `ok`.

Completed `artifacts/answer.json`. Computed result: `111470799972222222` wei. Validation run: `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs artifacts/answer.json .imd/reads/oracle.json` printed `ok`.

Created `artifacts/answer.json`. Average: **103084251400000000 wei** across **35 sales**. Embedded reproduction code returned the same result, and the required checker printed `ok`.

Created [artifacts/answer.json](/root/.identitymd/work/8d6b54ff-5373-47aa-a692-873c2e9f01fc/a9797876-e174-41ea-8f5f-63ca9d5b96c9/artifacts/answer.json). Average sale price: `103084251400000000` wei. The supplied validator prints `ok`.

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok`. The earlier rejection was because the `artifacts/` directory didn't exist. I created it this time. - **Answer:** 103084251400000000 wei (about 0.1031 ETH), the rounded-down mean of 35 qualifying sales whose prices sum to 3607948799000000000 wei. - **Recipe:** the brief is panel-evidence, so the recipe has to be `kind: "panel"`, with the chain source named as a URL. No chain recipe applies to it. - **Endpoints:** I confirmed the chain id and the pinned hash for block 26026607 on `ethereum-rpc.publicnode.com`, `rpc.flashbots.net/fast` and `rpc.mevblocker.io/fast`. I read from the first and would have rotated to the others on error. - **Method:** the delivered `scan.mjs` can't decode the nested offer and consideration tuples, so I wrote my own scanner in `test/scratch/`. It first pulled the collection's Transfer logs (182 logs in 148 blocks), because any sale must move a token. It then read the Seaport 1.5 and 1.6 `OrderFulfilled` logs in only those blocks: 460 fills, 37 involving the collection. - **Excluded:** two fills in tx `0x2088a5534ecbaaccb3fdf0c15a415987d31b8e43f444fc249400124030712dae` fit neither the listing nor the bid price rule. One offers the NFT plus WETH, the other offers two WETH items. They are left out of both the count and the sum, and `definitions` says so. If the panel counts them differently, its answer will differ from mine. I didn't run a full-range Seaport scan as a cross-check, and no other operator read the Seaport logs.

Created `artifacts/answer.json` with the reproduction recipe. Average: **103084251400000000 wei** across **35 qualifying sales**. Reproduction matched the fetched logs; the required checker printed `ok`.

I wrote `artifacts/answer.json`, and `check-answer.mjs` prints `ok` for it. The average sale price is **70972822828571428 wei**, about 0.0710 ETH. - **Sales counted:** 35 qualifying sales over blocks 26019451 to 26026607, summing to 2484048799000000000 wei. - **Excluded:** 2 fills of exactly one collection token, dropped because they were not paid in ETH or WETH. - **Method:** I fetched the collection's Transfer logs over the window (182 logs in 148 blocks). I then read the Seaport 1.5 and 1.6 OrderFulfilled logs in only those blocks and decoded them by hand against the Seaport ABI. I did not use `scan.mjs`, because it can't decode the nested item arrays. My script is in `test/scratch/s.mjs`. - **Endpoint:** I used only `https://ethereum-rpc.publicnode.com`, confirmed chain id 1 and the pinned closing hash on it, and did not cross-check against a second endpoint. - **Recipe:** the brief says `"evidence": "panel"`, so the recipe is `panel` with that endpoint as its source. The catalogue has no recipe kind that can reproduce this computation, so the method is described in `notes` only. The previous rejection came from the `artifacts/` directory not existing. I created it this time. The checker also requires the `window` keys in the order `toBlock`, `fromBlock`, `toBlockHash`, so I copied that order.

I wrote `artifacts/answer.json` and `check-answer.mjs` printed `ok`. The average sale price is **103084251400000000 wei**, about 0.1031 ETH. - **Sales counted:** 35 sales qualified. Their prices sum to 3,607,948,799,000,000,000 wei, which is the `figure` in the file. - **Window and endpoint:** I scanned blocks 26019451 to 26026607 through `https://ethereum-rpc.publicnode.com`. The chain id was 1 and the closing block hash matched the pin. The scan pulled 12,231 Seaport 1.5 and 1.6 `OrderFulfilled` logs. - **Excluded fills:** Two fills of the collection were excluded. Each was neither a listing paid entirely in ETH or WETH nor a single ETH or WETH bid. No bundles turned up. - **Recipe kind:** `oracle.json` sets `"evidence": "panel"`, so the checker only accepts `kind: "panel"`. The recipe names the RPC endpoint, event signature, both Seaport addresses and the block range as its source, and `notes` says how I decoded the logs. - **Decoder script:** I wrote my own decoder for `OrderFulfilled` because `scan.mjs` does not decode array fields. It lives in `test/scratch/sales.mjs`, which is not delivered. - **Earlier rejection:** The previous attempt failed because the `artifacts/` directory was missing. I created it this time, and `artifacts/answer.json` is not staged in Git. I did not cross-check the closing hash on a second operator's endpoint. My script had fallback endpoints listed but never needed them.

Created [artifacts/answer.json](/Users/peterhucik/.identitymd/work/8d6b54ff-5373-47aa-a692-873c2e9f01fc/a9797876-e174-41ea-8f5f-63ca9d5b96c9/artifacts/answer.json). Average sale price: `103084251400000000` wei. Validation passed: `check-answer.mjs` printed `ok`.

Done. The answer is **103,084,251,400,000,000 wei** (~0.1031 ETH), and `artifacts/answer.json` passes the plane's checker with `ok`. How it was computed, per the brief's pinned definitions: - Scanned `eth_getLogs` for the `OrderFulfilled` topic (`0x9d9af8…6f31`, verified against the keccak of the Seaport signature) on both Seaport 1.5 and 1.6 over exactly blocks 26019451–26026607, from `https://ethereum-rpc.publicnode.com`. The endpoint answered `eth_chainId` = 1 and the closing block's hash matched the pin — as did five more endpoints from different operators (mevblocker, drpc, flashbots, blastapi, meowrpc). - The window held 12,231 `OrderFulfilled` logs. Each was ABI-decoded and filtered: exactly one NFT item across offer + consideration, itemType 2, token = the Otherdeed Expanded contract. 35 sales qualified — 22 listing fills (price = sum of all consideration amounts, all of which had to be native ETH or WETH, fees included) and 13 bid fills (price = the single ETH/WETH offer amount). Zero fills were dropped for a foreign payment token; 2 were dropped for matching neither shape. - Sum 3,607,948,799,000,000,000 wei ÷ 35 = 103,084,251,400,000,000 wei exactly (no remainder), satisfying the `min: 1` guard. The answer file copies the request id, chain and window verbatim from the brief, uses the `panel` recipe (the brief says `"evidence": "panel"`) with the RPC endpoint as source, states the choices the question left open under `definitions` (event-level counting, the two-shape price rule, wei denomination, WETH at par), and documents the full method in `notes`. It is untracked in git — the previous seat failed simply because `artifacts/answer.json` was never created; this run's file is in place and validated.

`artifacts/answer.json` is written (4,126 bytes), untracked/ignored as required, and `check-answer.mjs` prints `ok`. ## Result **Answer: `103084251400000000` wei** (≈0.1031 ETH average sale price) ### How it was computed - Confirmed `eth_chainId=1` and the pinned closing hash for block 26026607 on two operators (`ethereum-rpc.publicnode.com`, `rpc.mevblocker.io/fast`). - `eth_getLogs` for the `OrderFulfilled` topic on Seaport 1.5 and 1.6 over exactly blocks 26019451–26026607 (8 × 1000-block chunks, no refusals): **12,231 logs**. - ABI-decoded each log's `offer`/`consideration` arrays in-process (`scan.mjs` can't decode dynamic arrays, so I wrote a small decoder in `test/scratch/` with the same chunk/halve/dedupe behaviour) and applied the pinned definitions: - 37 fills involve an ERC-721 of the collection; 0 bundles/ERC-1155; 0 non-ETH/WETH payments. - 2 excluded: the matched pair in block 26026158 whose offers each hold two items (neither the "single offer item" listing nor bid shape). - **35 qualifying sales** (22 listing fills, 13 bid fills), all on Seaport 1.6, sum **3,607,948,799,000,000,000 wei**; the mean divides exactly, so no rounding occurred. ### Judgment calls, stated under `definitions` - **Matched orders**: four `matchOrders` transactions emit a qualifying listing event and a qualifying bid event each; the pinned definition is event-level ("an OrderFulfilled event…"), so each counts as one sale. This is the one point where a panel member could reasonably diverge (deduping per tx would give 31 sales), so it's disclosed explicitly. - **"On OpenSea"**: no zone/fee-recipient filter, as the definitions define a sale purely by the Seaport contracts. - Recipe kind is `panel` (the brief sets `evidence: "panel"`), with the RPC URL as `source` and the full reproduction procedure in `notes`. The previous attempt failed only because `artifacts/answer.json` was never written; this run's file is in place and passes the plane's check.

Created [artifacts/answer.json](artifacts/answer.json). Average: **103084251400000000 wei** across **35 qualifying sales**. Includes definitions and a reproduction script. Required checker printed `ok`.

`artifacts/answer.json` is written and the checker prints `ok`. **Answer: 103084251400000000 wei** (≈0.1031 ETH) — mean over 35 qualifying Seaport fills, sum 3607948799000000000 wei. How it was computed, over exactly blocks 26019451–26026607 on chain 1: 1. Pin confirmed (`eth_chainId` = `0x1`, closing hash `0x8a84f5aa…cdec2`) on three independent operators: publicnode, drpc, merkle. 2. `eth_getLogs` for ERC-721 `Transfer` on `0x790b2cf2…8371` → 182 transfers in 148 blocks. Seaport moves the token in the same transaction as the fill, so this only avoids pulling a day of mainnet Seaport logs; it cannot drop a qualifying fill. 3. `eth_getLogs` for `OrderFulfilled` on Seaport 1.5 and 1.6 across those blocks → 460 logs, decoded (offer/consideration item arrays) and filtered by the brief's definitions. 4. 37 logs carried exactly one NFT item and it was an Otherdeed Expanded ERC-721; 35 were priceable (22 listing fills = sum of all ETH/WETH consideration incl. fees; 13 bid fills = the single ETH/WETH offer amount). 2 were left out: both sides of one `matchOrders` trade whose offer held two items, a shape the brief's price rule does not define. Totals were identical on three full runs from publicnode. drpc refused `eth_getLogs` at every range size and merkle returned 429, so those served as pin cross-checks only — both noted in the answer. The one open point, stated in `definitions` and `notes`: a matched order emits two `OrderFulfilled` logs for one trade (a gross bid-side price and a lower net listing-side price). The brief defines a sale as the event, so both were counted; four pairs are affected. Deduplicating them would change the answer, and which side to keep is not specified — hence the literal reading. Since the catalogue has no recipe kind that decodes Seaport items and the brief carries `"evidence": "panel"`, the recipe is `{ kind: "panel", source: "https://ethereum-rpc.publicnode.com" }`, with the reproduction steps in `notes` as the reference directs.

The answer is written to `artifacts/answer.json`: an average sale price of **103084251400000000 wei (about 0.1031 ETH)**. That's 35 qualifying sales adding up to 3607948799000000000 wei, divided and rounded down. `check-answer.mjs` prints `ok`, and the file is in place, which fixes what made the previous attempt fail. **How I computed it:** - I read from `https://ethereum-rpc.publicnode.com`. It reported chain 1, and the hash of block 26026607 matched the one pinned in `oracle.json`. - I fetched every `OrderFulfilled` log from both Seaport contracts over exactly blocks 26019451–26026607, which came to 12,231 logs. The supplied `scan.mjs` can't decode Seaport's item lists, so I decoded them with a small throwaway script in `test/scratch/`, using the definitions exactly as written. - I left out 2 events in one transaction (`0x2088a553…`) where the NFT was offered together with WETH. They are neither a plain listing fill nor a plain bid fill, so the definitions exclude them. **Decision for you:** 4 accepted bids (tokens 3535, 21789, 94519 and 58054) were each settled as a pair of matched orders. Each pair produces two qualifying events: one showing the buyer's full bid and one showing what the seller received after fees. The request defines a sale as one event, so I counted all 8, which means 35 sales rather than 31 real trades. If the panel collapses each pair into one sale, its answer will differ from mine; `notes` explains this. **Recipe type:** the request marks this as a panel question, so the checker only accepts a `panel` recipe. Its `source` names the endpoint, the event and the block range rather than a recipe the deployer can rerun automatically. The file isn't tracked by git (the repo's local exclude file ignores `artifacts/`), which matches the instruction to leave it for the daemon to upload.

Created [artifacts/answer.json](/home/imd/.identitymd/work/8d6b54ff-5373-47aa-a692-873c2e9f01fc/a9797876-e174-41ea-8f5f-63ca9d5b96c9/artifacts/answer.json). Average sale price: `103084251400000000` wei across 35 qualifying sales. The required checker prints `ok`.

Created `artifacts/answer.json`: **103084251400000000 wei**, averaged over 35 qualifying sales, with reproduction details. The required checker printed `ok`.

required named outputs are invalid: artifacts/answer.json: ENOENT: no such file or directory, lstat 'C:\Users\owner\.identitymd\work\8d6b54ff-5373-47aa-a692-873c2e9f01fc\a9797876-e174-41ea-8f5f-63ca9d5b96c9\artifacts'

FAILURE: runtime_error

**103084251400000000** wei (35 qualifying Seaport fills, sum 3607948799000000000 wei; computed twice — keyed dRPC and `https://ethereum-rpc.publicnode.com` — with identical results, pinned closing hash confirmed on both). `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs` prints `ok`.

Created `artifacts/answer.json` with the reproduction procedure. Average: **103084251400000000 wei** across **35 qualifying sales**. Validation: `ok`.

I wrote `artifacts/answer.json`. The average sale price is **103084251400000000 wei** (about 0.1031 ETH), and `check-answer.mjs` prints `ok` for the file. - **Sales counted:** 35 qualifying sales, summing to 3607948799000000000 wei, so the mean rounds down to the figure above. - **Data:** I fetched every OrderFulfilled log from Seaport 1.5 and 1.6 over exactly blocks 26019451–26026607, 12231 in all. I decoded them with my own script in `test/scratch/sales.mjs`, because the delivered `scan.mjs` can't decode the nested item arrays. - **Pin and endpoint:** I used `https://ethereum-rpc.publicnode.com` only. It reported chain 1 and its closing-block hash matched the pin. I did not check the hash on a second operator's endpoint. - **Excluded events:** Two OrderFulfilled events from the same transaction (token 944, 0.4 WETH) were left out. Their offer has two items, so they match neither the listing shape nor the bid shape in the definitions. This choice changes the average, and I recorded it under `definitions` and in `notes`. - **Recipe kind:** The brief says `"evidence": "panel"`, and the checker only accepts a `panel` recipe for such briefs. The recipe therefore names the endpoint, blocks and event topic as its source rather than a rerunnable chain recipe. `git status` shows no tracked changes.

Done. `artifacts/answer.json` is written and the checker prints `ok`. **Answer: 103084251400000000 wei** (≈0.103084 ETH), the floor of 3607948799000000000 wei ÷ 35 sales. How it was computed over exactly blocks 26019451–26026607 on chain 1: - Confirmed `eth_chainId` = 1 and the pinned closing hash on `ethereum-rpc.publicnode.com`, and again on a second operator (`eth-mainnet.nodereal.io`). - Pulled the collection's `Transfer` logs (182, in 148 blocks), then read `OrderFulfilled` from Seaport 1.5 and 1.6 in those blocks (692 logs), decoding the nested `SpentItem[]`/`ReceivedItem[]` data. 37 fills touched the collection; 35 qualified. - Applied the brief's definitions: exactly one ERC-721 item of the collection and no other NFT; listing fills priced as the sum of all consideration (fees included, all ETH/WETH), bid fills priced as the offer amount. 22 listings, 13 bids, all on Seaport 1.6. - Two fills were excluded — the two mirrored legs of one `matchOrders` trade whose offers each carry a second item, so neither matches a priced case the request defines (and counting both would double-count one trade). That exclusion is stated under `definitions`. The prefilter was verified rather than assumed: every collection-touching fill's transaction also emits a standard collection `Transfer`, and an unfiltered scan of blocks 26019451–26020650 (2116 `OrderFulfilled` logs) found exactly the same 6 collection-touching fills there. One thing worth flagging: the brief carries `"evidence": "panel"`, so the checker requires `{ kind: "panel", source }` — the chain recipes can't express this figure anyway (`OrderFulfilled` has no indexed token, and the answer is a mean of per-log conditional sums, not a sum of one data word). The `source` names the exact endpoint, topic, contracts and window so the deployer can reproduce it from public RPC data. The delivered `scan.mjs` can't decode Seaport's nested dynamic arrays, so the scan used an equivalent purpose-built reader with the same halving, pin check, and totals-only output; that's noted in `notes`. Scratch scripts are in `test/scratch/` and are not part of the deliverable.

I wrote `artifacts/answer.json` with an average sale price of **103084251400000000 wei** (about 0.1031 ETH). `check-answer.mjs` prints `ok` for it. - **Sales counted:** 35 qualifying sales over blocks 26019451 to 26026607. Their prices sum to 3607948799000000000 wei, and that divides by 35 with no remainder, so rounding down changes nothing. - **How I scanned:** the provided `scan.mjs` can't decode Seaport's array fields. I wrote my own script in `test/scratch/` that fetched the `OrderFulfilled` logs from both Seaport contracts and decoded them itself. It read 12231 logs in total. - **Endpoint and pin:** I scanned from `https://ethereum-rpc.publicnode.com`, with two other public endpoints as fallbacks if it refused a range. The chain id is 1 and the closing block hash matches the pin. I did not cross-check the hash on a second operator's endpoint. - **Recipe:** the brief's `evidence` is `panel`, so the only allowed recipe is `panel`, and I set its `source` to that RPC URL. The deployer can't rerun a panel recipe; agreement across the panel is the evidence. The commands and the pricing rules are written up in `notes` and `definitions`. I did no second full scan, as the brief advised.

Created [artifacts/answer.json](artifacts/answer.json) with the reproducible calculation. Average: **103084251400000000 wei** across **35 sales**. Validation: `check-answer.mjs` printed `ok`.

Created `artifacts/answer.json` with the reproducible calculation. Average: **103084251400000000 wei** across **35 sales**. The required checker printed `ok`.

Created [artifacts/answer.json](/home/worker/.identitymd/work/8d6b54ff-5373-47aa-a692-873c2e9f01fc/a9797876-e174-41ea-8f5f-63ca9d5b96c9/artifacts/answer.json). Average sale price: `103084251400000000` wei. Validation passed: `ok`.

Created [artifacts/answer.json](/home/imd-worker/.identitymd/work/8d6b54ff-5373-47aa-a692-873c2e9f01fc/a9797876-e174-41ea-8f5f-63ca9d5b96c9/artifacts/answer.json). Answer: `103084251400000000` wei. Validation: `check-answer.mjs` printed `ok`.

Created [artifacts/answer.json](artifacts/answer.json) with **103084251400000000 wei**, averaged over 35 qualifying sales, plus reproduction code. The required checker printed `ok`.

Completed [artifacts/answer.json](artifacts/answer.json). Average sale price: `103084251400000000` wei. Validated with the supplied checker (`ok`).

Created `artifacts/answer.json` with the average **103084251400000000 wei** across 35 qualifying sales and reproduction steps. The required checker printed `ok`.

Created [artifacts/answer.json](/home/imd3/.identitymd/work/8d6b54ff-5373-47aa-a692-873c2e9f01fc/a9797876-e174-41ea-8f5f-63ca9d5b96c9/artifacts/answer.json) with the reproduction procedure. Average: **103084251400000000 wei** across **35 qualifying sales**. Independent decoding matched; the supplied validator printed `ok`.

Created [artifacts/answer.json](artifacts/answer.json) with **103084251400000000 wei**, averaged over 35 qualifying sales, plus reproduction code. The required checker printed `ok`; decoder and reproduction checks passed.