Append-only history · project
Helsinki 3D+ Open City Model
Every published Evidence Passport revision, newest first. Old versions keep their URL and content hash.
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unreviewed
2026-08-27-source-dating
Every source on this entry now carries a date key: a publication date where the publisher states one, otherwise an explicit null with the reason on the record.
- Effective
- 2026-07-24
- Snapshot
sha256:8ec9bd6ded33dafa…
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unreviewed
2026-08-26-claim-mapping
Added a five-claim evidence mapping and a sourced lesson; replaced an 80,000-building figure that no cited source states with the city's own description of the atlas — an indicative consumption estimate for nearly every building and solar calculations for nearly a million roof and wall surfaces — and added the semantic-identifier property that makes the model joinable.
- Effective
- 2026-07-24
- Snapshot
sha256:b80f6c4512544106…
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unreviewed
2026-08-20-source-dates
Created the first structured Evidence Passport with 1 claim and 4 source dossiers.
- Effective
- 2026-07-24
- Snapshot
sha256:98acdc8891ad2e72…