---
phase: 09-verification-registry
verified: 2026-03-26T05:45:00Z
status: passed
score: 4/4 must-haves verified
re_verification: false
---

# Phase 09: Verification Registry Verification Report

**Phase Goal:** A centralized store tracks per-file checksum verification state as the single source of truth, queryable by seeder, sweep, and heartbeat
**Verified:** 2026-03-26T05:45:00Z
**Status:** passed
**Re-verification:** No — initial verification

---

## Goal Achievement

### Observable Truths

| #   | Truth                                                                                                  | Status   | Evidence                                                                                                  |
| --- | ------------------------------------------------------------------------------------------------------ | -------- | --------------------------------------------------------------------------------------------------------- |
| 1   | Registry stores per-file records with symbol, date, sha256, verified_at, and source fields             | VERIFIED | `VerificationRecord` dataclass at line 24; all 5 fields present; test `test_stores_all_fields` passes     |
| 2   | Registry is queryable by symbol and by date range                                                      | VERIFIED | `query_by_symbol()` line 96, `query_by_date_range()` line 103; tests 3-5 pass                             |
| 3   | Seeder can write a verification record; sweep can read existing records to skip already-verified files | VERIFIED | `add()` line 78, `has_verified()` line 92; tests 1-2 pass; source field accepts "seeder"/"sweep"          |
| 4   | Registry persists across process restarts as a JSON file on disk                                       | VERIFIED | `save()` atomic tmp+replace (lines 134-143), `load()` auto-called in `__init__` (line 72); tests 7-9 pass |

**Score:** 4/4 truths verified

---

### Required Artifacts

| Artifact                                       | Expected                                                                                                       | Status   | Details                                                                              |
| ---------------------------------------------- | -------------------------------------------------------------------------------------------------------------- | -------- | ------------------------------------------------------------------------------------ |
| `python/opendeviationbar/checksum_registry.py` | ChecksumRegistry class with add/query/has_verified/save/load API; exports ChecksumRegistry, VerificationRecord | VERIFIED | 161 lines; all 9 required methods present; both classes exported and importable      |
| `tests/test_checksum_registry.py`              | Unit tests covering add, query, persistence, dedup, edge cases; min_lines: 80                                  | VERIFIED | 239 lines; 17 tests covering all 11 planned behaviors plus 4 edge cases; all 17 pass |

---

### Key Link Verification

| From                                           | To                                                  | Via                  | Pattern             | Status   | Details                                                                          |
| ---------------------------------------------- | --------------------------------------------------- | -------------------- | ------------------- | -------- | -------------------------------------------------------------------------------- |
| `python/opendeviationbar/checksum_registry.py` | `~/.cache/opendeviationbar/checksum-registry.json`  | JSON load/save       | `json.(load\|dump)` | VERIFIED | `json.dumps` line 142, `json.loads` line 151; path set from `get_cache_dir()`    |
| `python/opendeviationbar/checksum_registry.py` | `platformdirs.user_cache_dir` (via `get_cache_dir`) | `get_cache_dir` call | `get_cache_dir`     | VERIFIED | `get_cache_dir` appears 2 times (import + call at line 70); not a hardcoded path |

---

### Data-Flow Trace (Level 4)

Not applicable — `checksum_registry.py` is a storage module, not a rendering component. It has no UI or data display layer. Level 4 tracing is skipped.

---

### Behavioral Spot-Checks

| Behavior                                            | Command                                                                                                               | Result             | Status |
| --------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- | ------------------ | ------ |
| Module importable as stated in success criteria     | `python -c "from opendeviationbar.checksum_registry import ChecksumRegistry, VerificationRecord; print('import OK')"` | `import OK`        | PASS   |
| All 17 unit tests pass                              | `uv run --python 3.13 pytest tests/test_checksum_registry.py -v`                                                      | 17 passed in 0.96s | PASS   |
| Seeder use case: add then save then re-load         | Covered by tests 7, 9 (`test_save_and_load`, `test_round_trip_multiple`)                                              | Tests pass         | PASS   |
| Sweep use case: `has_verified()` returns True/False | Covered by test 2 (`test_has_verified`)                                                                               | Test passes        | PASS   |
| Heartbeat use case: `summary()` returns counts      | Covered by test 10 (`test_summary`)                                                                                   | Test passes        | PASS   |

---

### Requirements Coverage

| Requirement | Source Plan   | Description                                                                                | Status    | Evidence                                                                                                                         |
| ----------- | ------------- | ------------------------------------------------------------------------------------------ | --------- | -------------------------------------------------------------------------------------------------------------------------------- |
| TELEM-03    | 09-01-PLAN.md | Centralized verification registry (JSON/SQLite) tracks per-file verification state as SSoT | SATISFIED | `ChecksumRegistry` with full CRUD, JSON persistence, standard-library-only (no SQLite needed). `[x]` in REQUIREMENTS.md line 30. |

No orphaned requirements — REQUIREMENTS.md maps only TELEM-03 to Phase 9, and the plan claims exactly TELEM-03.

---

### Anti-Patterns Found

| File                      | Line | Pattern | Severity | Impact |
| ------------------------- | ---- | ------- | -------- | ------ |
| No anti-patterns detected | —    | —       | —        | —      |

Scan result: zero TODOs, FIXMEs, placeholder comments, or empty return stubs in `checksum_registry.py`. All methods have substantive implementations. The `return {}` in `summary()` for `by_symbol` is a computed result, not a stub.

---

### Human Verification Required

None. All success criteria are programmatically verifiable and have been verified via test execution.

---

### Gaps Summary

No gaps. All must-have truths verified, all artifacts substantive and wired, both documented commit hashes (`8b85e92`, `a35e432`) exist in git history, and the single requirement TELEM-03 is satisfied.

The registry is not yet wired into seeder, sweep, or heartbeat — but this is correct and expected: those integrations are scoped to phases 10, 11, and 12 respectively. Phase 09 delivers only the foundation layer, which is what the phase goal states.

---

_Verified: 2026-03-26T05:45:00Z_
_Verifier: Claude (gsd-verifier)_
