park · official boundary
Blackstone Square
Protected open space in the City of Boston open-space inventory. At 1535 Washington Street.
Place
official layer
An official boundary, promulgated by an authority with the power to draw it. It is not amended by anything on the vernacular layer.
- Filed by this archive as
- park
- Authority
- City of Boston Parks and Recreation Department
- Within
- Boston
- Area
- 9926 square meters
- Boundary
- held as GeoJSON at
/asset/c5a9a59e23db7b938046c63796e95584/blackstone-square.geojson— 754 bytes, exactly as accessioned
Map
image/svg+xml at /asset/304759f996cf11b91ad42bf7cd988400/blackstone-square.svg — 1395 bytes, SHA-256 304759f996cf11b9… · Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0The exact coordinates are held separately as
/asset/c5a9a59e23db7b938046c63796e95584/blackstone-square.geojson (application/geo+json, 754 bytes, SHA-256 c5a9a59e23db7b93…). The map is simplified for drawing; the boundary is not.Questions this record answers
Each answer is composed only from fields this record carries, and names the attestation for what it says. A question the record cannot answer from its own attested content is not asked here. Where a boundary is described as official it was promulgated by an authority with the power to draw it and is not amended by anything on the vernacular layer; where it is described as vernacular it is held by attestation alone and amends no official boundary.
Where is Blackstone Square, and what kind of boundary does the archive hold?
Blackstone Square is recorded as a park, within Boston. The archive holds its boundary on the official layer: promulgated by an authority with the power to draw it.
Attested by: City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.
Who drew the boundary of Blackstone Square?
City of Boston Parks and Recreation Department promulgated it. A boundary with no promulgating authority is an assertion rather than a fact, and this archive files those separately, as claims.
Attested by: City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.
How large is Blackstone Square?
9926 square meters, computed from the boundary the archive holds and not quoted from elsewhere.
Attested by: City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.
What does the archive's map of Blackstone Square show?
A static map of the boundary, rendered by the archive on a server and never in a reader's browser, served as image/svg+xml at /asset/304759f996cf11b91ad42bf7cd988400/blackstone-square.svg. The exact coordinates it was drawn from are served separately as application/geo+json at /asset/c5a9a59e23db7b938046c63796e95584/blackstone-square.geojson.
Attested by: Rendered by archive-ingest 0.1.0 from the boundary this archive holds; digest 304759f996cf11b91ad42bf7cd988400b1b4e49d644e4111916d327ba917e26e.
What does the wider world call Blackstone Square?
It asserts none, deliberately. 1 candidate was considered and not asserted: Q5492114 (declined) — name agrees but type does not: this record is filed in this archive's `park` class, and Q5492114 is classed on Wikidata as square. A wrong sameAs is worse than none: under OWL semantics it instructs a consumer to merge two things into one, so the archive asserts an identity only where it can defend it and publishes the refusal where it cannot. Every verdict is in the reconciliation ledger at /reconciliation.
Attested by: Q5492114 — rdfs:label / skos:altLabel = Franklin and Blackstone Squares, decided 3 September 2026 by archive-ingest 0.1.0
What does the archive hold for Blackstone Square, and under what license?
The Boston Archive holds this record of Blackstone Square from City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0 (public domain). 4 recorded transforms stand between the retrieved bytes and this record. Attribution is due to City of Boston.
Attested by: City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.
Candidates the archive declined
Identities that were considered and not asserted. They are published here rather than merely filed, because a decision nobody can see is indistinguishable from never having looked. A candidate is DECLINED where the archive weighed it and refused it, and HELD where the archive asserts it nowhere on this record — most often because it is asserted on the archive's principal record for the same place, and asserting it twice would instruct a consumer to merge two records the archive deliberately keeps apart. Each row states which, in its own words. A wrong sameAs is worse than none. Every verdict is in the reconciliation ledger.
- Wikidata —
Q5492114· declinedMatched against: rdfs:label / skos:altLabel = Franklin and Blackstone SquaresWhy: name agrees but type does not: this record is filed in this archive's `park` class, and Q5492114 is classed on Wikidata as squareMethod: label-type-geography within the P131=Q100 candidate pool · Decided 3 September 2026
Related records
- located in — Boston
Identity
- Identifier
- urn:lemay:boston:entity:blackstone-square
- Canonical URL
- https://boston.fyi/place/blackstone-square
- As JSON
- https://boston.fyi/place/blackstone-square.json
- Version
- 1 · last changed 2 September 2026
Provenance
- Source
- City of Boston Open Data Portal (Analyze Boston) — source of record
- License
- Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0 (public_domain)
- Retrieved
- 2 September 2026
- Source identifier
- 347
- Attribution
- City of Boston
- Rights as stated
- Open Data Commons Public Domain Dedication and License (PDDL)
Transform ladder
| # | Operation | Description | Tool |
|---|---|---|---|
| 1 | fetch | retrieved the dataset's GeoJSON from the City of Boston open-data portal | archive-ingest 0.1.0 |
| 2 | normalize | the source's own name field became the record title; no name was supplied by the archive | archive-ingest 0.1.0 |
| 3 | reproject | the source is WGS 84 (EPSG:4326); geometry was set to that SRID without alteration of coordinates | archive-ingest 0.1.0 |
| 4 | externalize-boundary | The boundary left the inline page graph and became two preserved holdings: the exact coordinates at /asset/c5a9a59e23db7b938046c63796e95584/blackstone-square.geojson and a static map rendered server-side at /asset/304759f996cf11b91ad42bf7cd988400/blackstone-square.svg. The stored geometry is unchanged; the record graph now addresses it instead of carrying it. | archive-ingest 0.1.0 |