Permanent project revision

Helsinki 3D+ Open City Model

Revision 2026-08-20-source-dates · effective 2026-07-24

Superseded. A later revision exists: 2026-08-26-claim-mapping →

unreviewed

Created the first structured Evidence Passport with 1 claim and 4 source dossiers.

sha256:98acdc8891ad2e727f29a7825dade70b7d858f228f426c1a1f58e45c8daec6e0

All revisions → Current entity page →

Change set

add /evidencePassport — Added claim-level evidence mapping and source dossiers.
add /revisionHistory — Established a permanent, hash-addressed baseline revision.

1: of 1 claims mapped
4: source dossiers
2: publication dates recorded
1: archives linked
0: exact locators
0: content captures hashed

Claims, one by one

The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.

Claim 1 clm-41f4f48c558cd991 quantitative

The Energy and Climate Atlas computes solar radiation potential for roof and wall surfaces across roughly 80,000 buildings citywide.

Published field: impact · verbatim
Mapping: mapped · no interpretation or interpolation added by this passport
What the mapping says: The Atlas is the city's own tool within Helsinki 3D+, and the entry describes it calculating rooftop solar potential for 80,000 buildings.
Caveat: No claim-specific caveat recorded

Sources carrying this claim

City of Helsinki (authority)

Source dossiers and revision state

This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.

unreviewed Revision 2026-08-20-source-dates effective 2026-07-24 · created 2026-08-20

Awaiting operator and domain-expert review; publication of this revision implies neither.

sha256:98acdc8891ad2e727f29a7825dade70b7d858f228f426c1a1f58e45c8daec6e0

Revision history → Permanent version link → Machine-readable record → Evidence Constitution →

1: of 1 claims mapped
4: source dossiers
2: publication dates recorded
1: archives linked
0: exact locators
0: content captures hashed

Governance facts carried by the record

Operator: City of Helsinki
Actor types: city-government
Funding model: public
Funding description: Not recorded
Cost: Not recorded
Ownership: Not recorded
Decision rights: Not recorded
Exit conditions: Not recorded

4 source dossiers

City of Helsinki (authority) hel.fi · 1 linked claim

Open original source ↗

Stable source ID: src-3ad6b571e8bee43c
Publisher: Name not classified · hel.fi
Type / language: web-page · language not classified
Published: 2018-04-15
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-24
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: Open archived copy ↗ · 2026-07-29
Content hash: No captured content hash
Locator: Open the recorded source note
Official page: two model types, open-data formats (OBJ/CityGML/3MX), kartta.hel.fi/3d download portal, continuous updates.
Descriptive only — not page/paragraph exact
Claims linked: clm-41f4f48c558cd991

Bentley Systems (technology partner) bentley.com · background

Open original source ↗

Stable source ID: src-f47bc21acd557a1c
Publisher: Name not classified · bentley.com
Type / language: web-page · language not classified
Published: Not recorded
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-24
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Vendor case study: reality-mesh + CityGML model completed November 2016, €1M investment, ContextCapture/OpenCities Map tech stack.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

AEC Business (independent trade press) aec-business.com · background

Open original source ↗

Stable source ID: src-5b1e1245e9577b05
Publisher: Name not classified · aec-business.com
Type / language: web-page · language not classified
Published: Not recorded
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-24
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Independent account, dated Feb 2017, of the already-live models and free open-data commitment.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

Aalto University (independent) aalto.fi · background

Open original source ↗

Stable source ID: src-9fcc068e07847764
Publisher: Name not classified · aalto.fi
Type / language: web-page · language not classified
Published: 2021-04-07
Updated: 2021-07-01
Source last checked: No source-level check date
Record last verified: 2026-07-24
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Confirms the Energy and Climate Atlas solar-potential use (80,000 buildings) and a service-visualisation tool applied to Kalasatama.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

Known limits of this passport

Publisher names and source languages have not yet been classified; domains are recorded without guessing.
Existing source notes are descriptive locators, not page- or paragraph-exact citations.
A missing archive, publication date or content hash is shown as null rather than inferred.
The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.