f708a60c-e7aa-4da3-acb2-f3fb1a62ed2bIMD JOB

The check prints `ok`. The deliverable is complete. **Answer: 1328216551482758 wei** — the average sale price of Unusual Society (0xa9cadbc8364cd1dd6c6c9f4172ab80d09b5c1ca3) over the pinned window, blocks 26019451–26026607 on Ethereum mainnet. How it was computed: - I wrote a small Node 22 decoder in `test/scratch/avg-sale.mjs` (allowed scratch space, no dependencies) because the provided scan script can't decode Seaport's dynamic item arrays. It fetched `OrderFulfilled` logs (topic0 `0x9d9af8e3…`) from both Seaport 1.5 and 1.6 over exactly the pinned blocks from `https://rpc.flashbots.net/fast`, chunked with halving on refusal, deduplicated by block:logIndex. - The endpoint's chain id (1) and the closing block hash matched the pinned `0x8a84f5aa…`, and both were cross-checked on `https://ethereum-rpc.publicnode.com`, a second operator. - Applying the brief's definitions exactly: of 12,231 OrderFulfilled logs in the window, 29 touched the collection, and all 29 qualified — exactly one ERC-721 of the collection, no other NFT, paid entirely in ETH/WETH (zero exclusions of any kind). Sum of prices, fees included: 38,518,279,993,000,000 wei; floor(sum / 29) = 1,328,216,551,482,758 wei (remainder 18), satisfying the `min: 1` guard. - `artifacts/answer.json` copies the request id, chain, and window byte-for-byte from the brief, states the open choices under `definitions` (fill shapes, other-NFT exclusion, dedup), and — since the brief marks `evidence: "panel"` — carries the required `{kind: "panel", source}` recipe naming the RPC endpoint, with the full reproduction procedure in `notes`. `check-answer.mjs` passes with `ok`, the file is untracked, and nothing outside the allowed paths was touched.

`artifacts/answer.json` is untracked (correct — it's a named output the daemon uploads separately, not something to commit), and `test/scratch/` is scratch-only as expected. **Summary:** Scanned `OrderFulfilled` logs from Seaport 1.5 and 1.6 over blocks 26019451–26026607 (chainId 1, closing hash confirmed on both `rpc.flashbots.net/fast` and `ethereum-rpc.publicnode.com`), decoded offer/consideration items per the Seaport ABI, and applied the brief's definitions to find 29 qualifying single-ERC-721 sales of `0xa9cadbc8364cd1dd6c6c9f4172ab80d09b5c1ca3` paid in ETH/WETH. Sum = 38518279993000000 wei; average rounded down = **1328216551482758 wei**. Since the brief sets `"evidence": "panel"`, the answer uses `recipe.kind: "panel"` (as `check-answer.mjs` requires) with the on-chain method named in `source` and the full computation detailed in `notes`. `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs` prints `ok`.

Created and validated [artifacts/answer.json](</home/imd1/.identitymd/work/f708a60c-e7aa-4da3-acb2-f3fb1a62ed2b/b1a366f6-6a9c-4751-82b1-e48a20bd293f/artifacts/answer.json). The checker prints `ok`.

Check passed. Summary: - Scanned Seaport 1.5/1.6 `OrderFulfilled` logs over the pinned block window (26019451–26026607), decoded offer/consideration items, and applied the requester's definitions to find 29 qualifying single-ERC721 ETH/WETH sales of the collection. - Average sale price: **1,328,216,551,482,758 wei** (total 38,518,279,993,000,000 wei ÷ 29, floored). - Cross-checked the closing block hash on a second, independent RPC operator (matched). - Since the brief pins `evidence: "panel"`, wrote the recipe as `kind: "panel"` with a `source` describing the exact on-chain computation, per the catalogue rule that panel-evidence questions only take the panel recipe kind. - `artifacts/answer.json` written and validated with `check-answer.mjs` → `ok`.

`artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. The average sale price is **1328216551482758 wei**. - **Sales:** There were 29 qualifying sales, all listing fills paid in ETH or WETH. None were excluded as bundles, other NFTs or other tokens. The prices sum to 38518279993000000 wei, and dividing by 29 and rounding down gives the answer. - **Method:** I pulled the collection's Transfer logs over exactly blocks 26019451–26026607, which gave 29 logs in 4 transactions. I then decoded the Seaport 1.5 and 1.6 `OrderFulfilled` events in those transactions' receipts and applied the brief's definitions. Every Seaport sale of the collection has to emit a Transfer from the collection contract, so this catches all candidates. - **Endpoints:** I read from `https://ethereum-rpc.publicnode.com`. Chain id 1 and the pinned closing hash `0x8a84f5aa…` matched there, and the hash also matched on `https://rpc.flashbots.net/fast`. - **Recipe kind:** The brief says `"evidence": "panel"`, so the checker only accepts a `panel` recipe. Its `source` names the RPC endpoint and the reads above, which is not a rerunnable computation. - **Scan script:** I used a custom script in `test/scratch/` instead of `scan.mjs`, because `scan.mjs` can't decode Seaport's nested event arrays. - **Earlier failure:** The earlier `artifacts` directory error came from a missing `artifacts/` directory. It exists now, and the file is untracked.

Created [artifacts/answer.json](/home/imd-worker/.identitymd/work/f708a60c-e7aa-4da3-acb2-f3fb1a62ed2b/b1a366f6-6a9c-4751-82b1-e48a20bd293f/artifacts/answer.json). Average sale price: `1328216551482758` wei across 29 qualifying sales. Validation result: `ok`.

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok`. - **Answer:** the average sale price is 1328216551482758 wei, as a decimal string. That is 38518279993000000 wei over 29 sales, rounded down. - **Sales counted:** 27 were listing fills and 2 were bid fills. No fill was dropped for non-ETH/WETH payment or an odd shape. - **Data:** I scanned Seaport 1.5 and 1.6 `OrderFulfilled` logs over blocks 26019451 to 26026607 on `https://ethereum-rpc.publicnode.com`, which returned 12231 logs. The closing block hash matched the pin. A second operator (`rpc.flashbots.net/fast`) returned the same hash for block 26026607. - **Recipe kind:** the brief says `"evidence": "panel"`, and the checker only accepts a `panel` recipe for that. So the recipe is `panel` with the RPC URL as its `source`, and the on-chain method is described in `notes` and `definitions`. - **Decoder:** `scan.mjs` can't decode the nested item arrays in this event. I used a small decoder in `test/scratch/sales.mjs`, which isn't submitted. The `panel` recipe can't be rerun, so the answer depends on the method in `notes`. - **Earlier failure:** the previous attempt failed because `artifacts/` didn't exist. I created it and left `answer.json` untracked.

Created [artifacts/answer.json](artifacts/answer.json) with the reproducible RPC procedure. Average: **1,328,216,551,482,758 wei** across **29 sales**. The embedded reproducer matched the scanned data, and `check-answer.mjs` printed `ok`.

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok` for it. The average sale price comes out at **1328216551482758 wei**. - **How I computed it:** I checked chain 1 and the pinned closing block hash on `ethereum-rpc.publicnode.com`, which was the only endpoint I used. I fetched the collection's Transfer logs over the pinned blocks, then the Seaport 1.5 and 1.6 `OrderFulfilled` logs in the four blocks that had them. I decoded those with the Seaport ABI and applied the brief's definitions. - **Result:** All 29 transfers were qualifying sales, and none were skipped. The prices total 38518279993000000 wei, and 38518279993000000 / 29 = 1328216551482758.6, rounded down to the figure above. - **Recipe kind:** The brief says `"evidence": "panel"`, and `check-answer.mjs` rejects any other recipe kind for such a brief. So the recipe is `panel`, with the RPC endpoint and method as its `source`, even though the figure was computed from chain data. - **Cause of the earlier failure:** The previous attempt failed because the `artifacts/` directory didn't exist. I created it this time. - **Scan tooling:** I did not use `scan.mjs`, because it can't filter by NFT collection. I wrote my own script instead, in `test/scratch/`. - **Files:** The answer file is untracked and nothing else in the repo changed.

Done. `artifacts/answer.json` is written and `check-answer.mjs` prints `ok`. **Answer: 1328216551482758 wei** (~0.001328 ETH) average sale price. How it was computed: - Scanned all 12,231 `OrderFulfilled` logs from Seaport 1.5 (`0x0000…14dc`) and 1.6 (`0x0000…b395`) over exactly blocks 26019451–26026607 (7,157 blocks), via `https://ethereum-rpc.publicnode.com` in 400-block chunks with halve-on-refusal (no chunk was refused, 20 RPC calls). `eth_chainId` = `0x1`; the closing block hash matched the pin there and on a second operator, `https://eth.drpc.org`. - Decoded each log's `SpentItem[]`/`ReceivedItem[]` and kept fills holding exactly one NFT item, itemType 2, of `0xa9ca…1ca3`: 29 sales (27 listing fills priced as the full consideration in ETH/WETH including fees, 2 WETH bid fills priced as the offer amount). Sum 38,518,279,993,000,000 wei ÷ 29 = 1,328,216,551,482,758 (floor, remainder 18). - Reconciled against chain state: the single-item purchase's tx value equals its decoded price exactly; the 26-order sweep's tx value equals the sum of its 26 decoded prices and it emitted 26 ERC-721 transfers; the two bid fills are WETH with tx value 0. No log touching the collection fell into an excluded shape, so the open definitional choices don't move the figure. Two things worth flagging for the panel comparison: - The brief sets `"evidence": "panel"`, so the recipe kind must be `panel` even though the fact is on chain — `check-answer.mjs` rejects a chain recipe here. The `source` names the exact `eth_getLogs` query that reproduces it. - The 26-order sweep transaction is the main place honest members could diverge: the definitions make each `OrderFulfilled` event a sale, so I counted it as 26. Treating it as one sale would give a different mean; that choice is stated under `definitions.sale`. `scan.mjs` can't decode Seaport's dynamic arrays (it only sums fixed data words), so I used it for the event topic and ran the same chunking/halving fetch-and-reduce loop in a scratch script for the decode — logs never printed.

Created `artifacts/answer.json` with **1,328,216,551,482,758 wei**, averaged over 29 sales. The included procedure reproduced the result. Required checker printed `ok`.

Created [artifacts/answer.json](/home/imd-worker/.identitymd/work/f708a60c-e7aa-4da3-acb2-f3fb1a62ed2b/b1a366f6-6a9c-4751-82b1-e48a20bd293f/artifacts/answer.json). Average sale price: `1328216551482758` wei. Validation passed: `check-answer.mjs` printed `ok`.

Wrote `artifacts/answer.json` with the computed uint256 answer: `1328216551482758` Checked it with: `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs artifacts/answer.json .imd/reads/oracle.json` Result: `ok`.

required named outputs are invalid: artifacts/answer.json: ENOENT: no such file or directory, lstat 'C:\Users\owner\.identitymd-729\work\f708a60c-e7aa-4da3-acb2-f3fb1a62ed2b\b1a366f6-6a9c-4751-82b1-e48a20bd293f\artifacts'

FAILURE: runtime_error

Created [artifacts/answer.json](/root/.identitymd/work/f708a60c-e7aa-4da3-acb2-f3fb1a62ed2b/b1a366f6-6a9c-4751-82b1-e48a20bd293f/artifacts/answer.json). Answer: `1328216551482758` wei Qualifying sales: 29 Validation: `check-answer.mjs` prints `ok`.

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok` for it. - **Answer:** 1328216551482758 wei, the average sale price of Unusual Society over blocks 26019451 to 26026607. - **Basis:** 29 qualifying sales, with prices summing to 38518279993000000 wei, rounded down. - **Scan:** I fetched every Seaport 1.5 and 1.6 `OrderFulfilled` log in the window, 12,231 in all. I decoded them with the Seaport ABI and kept only fills of exactly one ERC-721 of the collection paid in ETH or WETH. - **Bid fills:** I counted a bid fill when the offer items were all ETH or WETH and the consideration held exactly one collection token. The price was the sum of the offer amounts. That is my reading of the price definition. I stated it in `definitions`. - **Endpoint:** I read from `https://ethereum-rpc.publicnode.com`, with three other endpoints from the public list as fallbacks. The closing block hash matched the pin. - **Second endpoint:** I did not cross-check the hash on a second operator. - **Recipe:** The brief says `"evidence": "panel"`, and the catalogue allows only the `panel` recipe for that. So the recipe is `panel`, sourced to that RPC URL. The deployer cannot mechanically rerun a `panel` recipe. Reproducibility rests on the decoding described in `notes`. - **Scan script:** I used a custom decoder in `test/scratch/s.mjs` rather than `scan.mjs`, because `scan.mjs` can't decode the dynamic item arrays in this event.

Created [artifacts/answer.json](artifacts/answer.json): **1,328,216,551,482,758 wei**, averaged over 29 qualifying sales. The included reproduction script matched the answer from public RPC data. The required checker printed `ok`.

Created [artifacts/answer.json](/home/imd/.identitymd/work/f708a60c-e7aa-4da3-acb2-f3fb1a62ed2b/b1a366f6-6a9c-4751-82b1-e48a20bd293f/artifacts/answer.json). Computed average: `1328216551482758` wei across 29 qualifying sales. Validation passed: `ok`.

Created `artifacts/answer.json` with average **1,328,216,551,482,758 wei** across 29 sales. The included reproduction script returned the same result. Required checker printed `ok`.

Not logged in · Please run /login

FAILURE: runtime_error

`artifacts/answer.json` is written, and `check-answer.mjs` prints `ok`. The answer is **1328216551482758 wei**, the average price of 29 qualifying Seaport sales. - **Sum and count:** the 29 prices sum to 38518279993000000 wei, and 38518279993000000 / 29 rounds down to the answer above. - **Sale types:** 27 of the sales are listing fills and 2 are bid fills paid in WETH. None of the collection's Seaport fills were excluded. - **Window:** the pinned closing block hash matched on the endpoint I read from, `https://ethereum-rpc.publicnode.com`. That is the only endpoint I used, so I did not cross-check the hash on a second operator. - **Method:** the catalogue has no average recipe, and this is a panel-evidence request. The recipe is therefore `panel` with the RPC as its source, and `notes` explains the method. I did not use `scan.mjs`. Its summing options cannot decode the nested offer and consideration items, so I wrote my own decoder in `test/scratch/avg.mjs`, which is not submitted. It first finds the blocks where the collection had Transfer events (29 transfers in 4 blocks). It then reads `OrderFulfilled` logs from both Seaport contracts in only those blocks. `git status` shows nothing new, so `artifacts/answer.json` is not showing as untracked, and I did not add or commit anything.

Created [artifacts/answer.json](/Users/peterhucik/.identitymd/work/f708a60c-e7aa-4da3-acb2-f3fb1a62ed2b/b1a366f6-6a9c-4751-82b1-e48a20bd293f/artifacts/answer.json). Average sale price: `1328216551482758` wei. The supplied checker prints `ok`; arithmetic was also verified.

The average sale price of Unusual Society on OpenSea over blocks 26019451–26026607 was **1328216551482758 wei** (about 0.001328 ETH). The answer is in `artifacts/answer.json`, and `check-answer.mjs` prints `ok` for it. **How I got it:** - I pulled every `OrderFulfilled` event from Seaport 1.5 and 1.6 over exactly the pinned blocks, using `https://ethereum-rpc.publicnode.com` in 500-block chunks and splitting any chunk the endpoint refused. That came to 12,231 events. - Before scanning I confirmed the chain id is 1 and that the closing block's hash matches the pinned one. I checked the hash again on a second provider, `https://eth.drpc.org`. - I decoded each event and applied the request's definitions. 29 fills qualified: 27 were purchases of a listed token and 2 were accepted bids. None were excluded for being paid in another token or for an unexpected order shape. - Sum of prices: 38518279993000000 wei. Divided by 29 and rounded down, that gives the answer. **Things a reviewer should know:** - **One transaction dominates.** 27 of the 29 sales came from one bulk-buy transaction (`0xa758e542…`, block 26022480). It emits one event per token bought, and I counted each as a separate sale, as the definitions say. - **The recipe is a panel recipe, not a rerunnable one.** The request is marked as a panel question, so the only allowed recipe type is `panel` with a `source` URL. I named the endpoint I read from. Other panel members may name a different URL for the same data. Answers are grouped by recipe before they're compared, so that could stop our answers from being counted together even if the numbers match. - **I didn't use the provided `scan.mjs`.** It can only sum or rank single values in an event and can't read Seaport's lists of offer and payment items. I wrote my own decoder in `test/scratch/run.mjs`, which is not submitted. - **I ran one full scan, not two.** The skill says a second full scan isn't needed. To guard against the endpoint cutting results short, I kept chunks small, at roughly 850 events per request. - **The file is untracked.** I left `artifacts/answer.json` uncommitted, as the task instructions say.

Created `artifacts/answer.json` with **1328216551482758 wei**, averaged over 29 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: 1328216551482758 wei** (≈0.0013282 ETH), from 29 qualifying sales summing to 38518279993000000 wei. How it was computed, over exactly blocks 26019451–26026607: - Chain id and the pinned closing hash `0x8a84f5aa…cdec2` confirmed on two operators (`rpc.flashbots.net/fast`, `ethereum-rpc.publicnode.com`). - ERC-721 `Transfer` logs of the collection over the window: 29 logs in 4 blocks. Re-scanned independently on publicnode at 400-block chunks with the delivered `scan.mjs` — same 29 in the same 4 blocks, so nothing was truncated. - Seaport `OrderFulfilled` logs on both 1.5 and 1.6 restricted to those blocks (safe: an itemType-2 fill always transfers the token): 35 logs, decoded in-process, never printed. 29 qualified — 27 listing fills, 2 bid fills, all Seaport 1.6. Nothing dropped as a bundle, ERC-1155, multi-item offer, or non-ETH payment. - Decode check: each listing transaction's summed consideration equals the transaction's ETH value to the wei (1298000000000000 for the lone fill in 26019850; 35020279993000000 for the 26-item sweep in 26022480), confirming fees and royalties are inside the price. Both bid fills carry value 0 and pay WETH. The brief has `"evidence": "panel"`, so the recipe is `{ kind: "panel", source }` — required by the checker, and no chain recipe could express this figure anyway (`log-sum` sums one fixed data word; a Seaport price is a conditional sum over a dynamic consideration array). The source names the exact endpoint, topic0, both Seaport addresses and the filter. Judgement calls I had to fix and stated under `definitions`: one sale per qualifying `OrderFulfilled` event (no two shared a transaction and token id, so the literal and de-duplicated counts are both 29); WETH counted 1:1 with ETH; offer must hold exactly one item; and no marketplace filter beyond the two Seaport contracts the brief names — the question says "on OpenSea" but its `sale` definition sets no zone or conduit test, and 1 of the 29 fills came through the router `0xb92fe925…fff4f`.

Created `artifacts/answer.json` with **1328216551482758 wei**, averaged across 29 qualifying sales. The included reproduction script returned the same result. Required checker: `ok`.

Wrote `artifacts/answer.json`: **1,328,216,551,482,758 wei**, averaged over 29 qualifying sales. Included the RPC reproduction procedure. The required checker printed `ok`.

Created [artifacts/answer.json](/Users/zhuminquan/.identitymd-2/work/f708a60c-e7aa-4da3-acb2-f3fb1a62ed2b/b1a366f6-6a9c-4751-82b1-e48a20bd293f/artifacts/answer.json) with the computed average sale price: `1328216551482758` wei. Validation: `check-answer.mjs` returned `ok`.

I wrote `artifacts/answer.json` with an average sale price of **1328216551482758 wei**. `check-answer.mjs` prints `ok` for it. - **How I got it:** I read every Seaport 1.5 and 1.6 `OrderFulfilled` log over blocks 26019451–26026607 from `https://ethereum-rpc.publicnode.com`, which returned 12,231 logs in that window. Before reading them I confirmed the endpoint reports chain 1 and that block 26026607 has the pinned hash. I decoded the offer and consideration items and applied the request's sale and price definitions. I didn't use the supplied scan script, because it can't decode Seaport's nested item arrays. The decoder is `test/scratch/s.mjs`, which isn't submitted. - **Result:** 29 qualifying sales totalling 38518279993000000 wei, which gives the average above. - **Recipe:** I used the `panel` kind, because the brief marks its evidence as `panel`. The catalogue says panel recipes take only a `source` URL, so the recipe carries the RPC endpoint and nothing else. The deployer therefore can't rerun it mechanically. The exact computation is in `notes`. - **Second endpoint:** I did not check the closing hash on a second operator's endpoint, as the reference suggests. - **Fix during checking:** the checker rejected the first draft because the `window` keys were in the wrong order (`toBlock` must come before `fromBlock`). I reordered them.

**1328216551482758** wei — mean of 29 Seaport 1.6 fills (28 listing, 1 bid) of Unusual Society over blocks 26019451–26026607, sum 38518279993000000 wei; reproduced identically on dRPC (keyed) and `https://ethereum-rpc.publicnode.com`, pinned hash confirmed on both. `node .imd/reads/skills/oracle-assess/scripts/check-answer.mjs artifacts/answer.json .imd/reads/oracle.json` prints `ok`.

Created `artifacts/answer.json` with **1328216551482758 wei**, averaged over 29 qualifying sales, and a standalone reproduction procedure. Required checker prints `ok`. Reproduction code matches the fetched logs.

I wrote `artifacts/answer.json` with an average sale price of **1328216551482758 wei**, about 0.00133 ETH. The answer checker prints `ok`. - **Sales found:** 29 sales qualified, 27 listing fills and 2 bid fills. The sum is 38518279993000000 wei, and dividing by 29 and rounding down gives the answer. Prices ran from 0.001 ETH to 0.00145 ETH. - **How I computed it:** I pulled every `OrderFulfilled` log from Seaport 1.5 and 1.6 over exactly blocks 26019451 to 26026607 from `https://ethereum-rpc.publicnode.com`. That was 12,231 logs with no duplicates. I decoded them in a script and applied the brief's definitions. No event involving the collection was dropped for payment token or shape. - **Pin check:** the closing block hash matched the pin on publicnode and on `https://eth.drpc.org`, and the chain id was 1. - **Recipe kind:** the brief is marked `evidence: "panel"`, and the checker requires a `panel` recipe in that case. None of the chain recipes can filter Seaport's nested items either. So the recipe is `panel`, with the RPC endpoint, topic, contracts and block range as its source. The `notes` field records this and the exact method. - **Scratch script:** the script I used is in `test/scratch/sales.mjs`. It isn't submitted, so a reader can't rerun it from the answer file alone.

Created [artifacts/answer.json](/home/worker/.identitymd/work/f708a60c-e7aa-4da3-acb2-f3fb1a62ed2b/b1a366f6-6a9c-4751-82b1-e48a20bd293f/artifacts/answer.json). Result: `1328216551482758` wei Qualifying sales: 29 Total: `38518279993000000` wei Checker: `ok`

Created `artifacts/answer.json` with the reproduction procedure. Average: **1,328,216,551,482,758 wei** across **29 sales**. Required checker returned `ok`.

Created `artifacts/answer.json` with the reproduction procedure. Average: **1,328,216,551,482,758 wei** across **29 sales**. Required validator: `ok`.

The average sale price of Unusual Society over the pinned window is **1328216551482758 wei** (about 0.001328 ETH). The answer is written to `artifacts/answer.json`, and `check-answer.mjs` prints `ok`. **How it was computed** - I pulled every `OrderFulfilled` log from both Seaport contracts (1.5 and 1.6) over exactly blocks 26019451–26026607. That was 12,231 logs, from `ethereum-rpc.publicnode.com`, with `eth.drpc.org` as a fallback. - The chain id was 1. The hash of the closing block matched the pinned hash on publicnode and again on `rpc.flashbots.net`. - I decoded each log with the Seaport ABI and applied the request's definitions. 29 fills involved the collection, and all 29 qualified: - **27 listing fills.** 26 of these are in one sweep transaction (`0xa758e542bd…`), and each fill is counted as its own sale, as the definitions require. - **2 bid fills**, priced at the offer amount. - No bundles, ERC-1155 fills or fills paid in other tokens came up. - The prices sum to 38518279993000000 wei, which is the `figure`. Divided by 29 and rounded down, that gives the answer. **Recipe:** the request marks this as a panel question, so the recipe has to be `panel`. None of the rerunnable recipe types can decode Seaport's item lists anyway. Its `source` field describes the on-chain read: the endpoint, event topic, both contracts and the block range. The decoding script is in `test/scratch/avg.mjs`, which is not submitted. `artifacts/answer.json` is left untracked (git status doesn't list it), so the daemon can upload it.

Created [artifacts/answer.json](artifacts/answer.json) with the reproduction code. Average: **1,328,216,551,482,758 wei**, across **29 qualifying sales**. Required validator printed `ok`.