PROBE.md — Phase 0 data probe
Project record, rendered verbatim from
PROBE.md in the
source repository.Run started: 2026-09-08T01:51:54.563Z Sources: MusicBrainz WS/2 (1 req/sec, cached), Wikidata SPARQL (cached).
Q1 — MusicBrainz Place: 924 Gilman Street, Berkeley CA
- Search matches for
place:"924 Gilman": 1 - Name: 924 Gilman
- MBID:
c8f5fa3f-2a84-4fbc-9c99-d6d370b5a6c5 - Type: Venue
- Address: 924 Gilman Street, Berkeley, CA 94710
- Area: Berkeley
- Coordinates on the Place entity: yes (lat 37.879666, lng -122.299314)
- Lifespan: {"begin":"1986-12-31","ended":null}
Q2 — Events linked to that Place
- Event count: 4
- Date range: 1991-03-23 → 2026-05-26 (4 events carry a date)
inc=artist-relssupported on browse: true- Events by decade: {"1990s":1,"2000s":1,"2020s":2}
Q3 — Origin resolution for a 50-artist sample from those events
- Unique artists linked to Gilman events (performer rels): 12
- Sample size: 12 (sorted by MBID for determinism)
- Artists with a
begin-area: 6/12 - Unique begin-areas in sample: 5
- Resolved via Wikidata P982 backlink: 5/5 (with coords: 5)
- Tier-2 (MB url-rels -> Wikidata) resolved 0 of the 0 remaining areas
- Artists whose begin-area resolves to coordinates: 6 of 12
Unresolved artists in sample:
- State of Reliance (
1475a93e-9f44-4350-a521-89344037dd5c): no begin-area - Analog Dog (
30d7b3b6-7039-4f47-ac7a-92c8234b7f9c): no begin-area - A new day (
4428d7fe-7de2-4a41-a610-b9f94cf6f393): no begin-area - Concision (
62f54e7b-c5e6-4e31-943a-c3966738fd96): no begin-area - Lost Not Found (
70301063-71c2-406e-a750-647d15ecdae9): no begin-area - Fifteen Rhema (
f9d1e34a-2089-4e61-945a-484822dd8db3): no begin-area
Q2b — Event counts at other notable Bay Area venues
| Venue | Found | Coords | MB events |
|---|---|---|---|
| The Fillmore (San Francisco) | yes | yes | 4 |
| The Warfield (San Francisco) | no | — | — |
| Great American Music Hall (San Francisco) | yes | yes | 22 |
| Bottom of the Hill (San Francisco) | yes | yes | 6 |
| The Independent (San Francisco) | yes | yes | 7 |
| Bill Graham Civic Auditorium (San Francisco) | yes | yes | 25 |
| William Randolph Hearst Greek Theatre (Berkeley) | yes | yes | 8 |
| Fox Theater (Oakland) | yes | yes | 16 |
| Shoreline Amphitheatre (Mountain View) | yes | yes | 72 |
| Cow Palace (Daly City) | yes | yes | 6 |
Q4 — Fallback seed: Bay Area origin artists in Wikidata with MB IDs
- Bay Area counties resolved on Wikidata: Santa Clara County (Q110739), Alameda County (Q107146), Contra Costa County (Q108058), Sonoma County (Q108067), Solano County (Q108083), San Mateo County (Q108101), Marin County (Q108117), Napa County (Q108137), San Francisco (Q62)
- Places with coordinates under those counties (depth <= 2 via P131): 9854
- Artists with a MusicBrainz ID + P740 (formation) or P19 (birth) at one of those places: 1577
- via P740 formation location: 398 bindings
- via P19 place of birth: 1180 bindings
- Note: every artist in this pool has origin coordinates by construction (the place set is coordinate-filtered).
Gate evaluation
- Gilman events >= 20: false (4)
- Origin-coordinate resolution >= 70%: false (6 of 12)
- Fallback seed pool size: 1577
VERDICT: venue-anchored framing lacks event data. Write BLOCKED.md, proceed with Bay-Area-origin fallback (venue layer stays in schema, sparsely populated).
Requests: 100 network, 36 cache hits. Finished: 2026-09-08T01:53:35.656Z