1001 Smart Cities

Permanent project revision

Urban Data Platform: What Outlived the SmartEnCity Lighthouse

Revision 2026-08-28-tartu-baseline · effective 2026-08-28

Current revision. This is the snapshot used by the live entity page.

unreviewed

Created the first structured Evidence Passport with 13 claims and 8 source dossiers.

sha256:8ffac9dd0401d20938835bb3fd757e88faa5e946c5e89dafb8ce65aac504694d
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.
13
of 13 claims mapped
8
source dossiers
3
publication dates recorded
0
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-144bb08143b1d3f7 quantitative
grew out of the EU Horizon 2020 SmartEnCity lighthouse project (February 2016 – July 2022)
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The project site states verbatim 'Projekt algas 2016. a veebruaris ning kestis kuni juulini 2022' (the project began in February 2016 and ran until July 2022); CORDIS records 1 February 2016 to 31 July 2022 with Tartu as a lighthouse city. The thesis ties the sensor fleet's creation to the project: 'Tartu City started its road toward SC during the SmartEnCity project.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Tark Tartu project site — SmartEnCity overview
  2. CORDIS — SmartEnCity project record (GA 691883)
Claim 2 clm-aa5213f28269962d descriptive
project partner Telia provided a Cumulocity-based IoT platform
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
CORDIS lists TELIA EESTI AS among the participants; the city business portal states 'Tartu City uses Telia's IoT platform for energy monitoring and sensor data'; the thesis identifies that platform as Cumulocity (Software AG), 'used by the City of Tartu as the primary platform for managing IoT devices'.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. CORDIS — SmartEnCity project record (GA 691883)
  2. Business Tartu (city business portal) — Telia's IoT Smart City Platform
  3. Savik, Oleg — Tartu Smart City data integration between the Cumulocity IoT database and ArcGIS (University of Tartu, 2025)
Claim 3 clm-e56162316c824829 descriptive
a public portal where anyone could watch public transport, traffic, charging points and city bikes in real time
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Invest in Estonia, verbatim: 'This allows users to see in real time the movement of public transport, the current traffic situation, how many electric car charging stations are in use in the city, and how many city bikes are available in parking spaces.' The city business portal adds that Telia 'provides a portal service for Estonian eID-based data ownership, visualisation and data sharing' and links the portal at tarktartu.telia.ee.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Invest in Estonia — Smart and green, Tartu attracts talent
  2. Business Tartu (city business portal) — Telia's IoT Smart City Platform
Claim 4 clm-9617022d85c15704 descriptive
Pedestrian, cycle and car counters, the state of the street lights, bike-share use and building energy data feed the store
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The thesis's dataset table lists EcoCounters ('Sensors counting pedestrians and bicycles'), AVC sensors ('Car traffic counting sensors'), Lights ('State of city lights in Tartu'), Rattaringlus bike-share figures and dock stations, and Buildings ('Energy consumption data for buildings').
Caveat
The same table also lists counts of clients on Telia mobile-network cells; the entry names the city-run feeds.

Sources carrying this claim

  1. Savik, Oleg — Tartu Smart City data integration between the Cumulocity IoT database and ArcGIS (University of Tartu, 2025)
Claim 5 clm-0d54c3c28d560392 descriptive
The portal has quietly disappeared
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The Internet Archive's last capture of tarktartu.telia.ee/et/ answered HTTP 200 on 17 February 2025 (timestamp 20250217145356); on 28 August 2026 the hostname no longer resolved (DNS lookup failed from two independent clients). No closure statement from the city or Telia was found.
Caveat
Dated by the archive's last capture against a DNS check on 28 August 2026 — the portal went dark some time between those dates; no shutdown notice was found. The find locator is null because the archived page content could not be read from this environment; the attestation is the capture record itself.

Sources carrying this claim

  1. Internet Archive — last capture of the Tartu city portal (tarktartu.telia.ee)
Claim 6 clm-8b9951374477ef3d descriptive
the database outlived the project as the city's primary IoT platform
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Written in 2025, three years after the project's July 2022 end, the thesis states: 'This platform was used by the City of Tartu as the primary platform for managing IoT devices', and treats the instance as the live data source for its integration work.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Savik, Oleg — Tartu Smart City data integration between the Cumulocity IoT database and ArcGIS (University of Tartu, 2025)
Claim 7 clm-898bc0d4ea907edb quantitative
about 19,000 registered devices and roughly 1.3 terabytes of data as of 2024, figures it takes from a 2024 thesis
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Verbatim: 'According to the Kaspar [18], there are about 19000 registered devices and the size of the database is about 1.3 terabytes as of 2024.' Reference [18] is a 2024 University of Tartu thesis.
Caveat
Second-hand within the thesis — it cites another University of Tartu thesis (2024); no operator-published figure for the store's size exists.

Sources carrying this claim

  1. Savik, Oleg — Tartu Smart City data integration between the Cumulocity IoT database and ArcGIS (University of Tartu, 2025)
Claim 8 clm-2cb59b157eee590d descriptive
a city API named Reaalajaandmed built to replace it
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The thesis validates its pipeline against 'Reaalajaandmed (New API developed to replace Cumulocity)' and states 'This API is intended to replace Cumulocity', noting the new alternative runs on QuestDB.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Savik, Oleg — Tartu Smart City data integration between the Cumulocity IoT database and ArcGIS (University of Tartu, 2025)
Claim 9 clm-d80919f13e3555ed descriptive
dashboards are shared through Tartu's ArcGIS portal
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Verbatim: 'Many dashboards and maps are shared with the public through the official ArcGIS portal of Tartu', footnoted as tartu.maps.arcgis.com — which still answered in August 2026.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Savik, Oleg — Tartu Smart City data integration between the Cumulocity IoT database and ArcGIS (University of Tartu, 2025)
Claim 10 clm-c4787897df03d055 quantitative
on 28 August 2026 Estonia's national open-data portal listed 29 datasets from Tartu city government, 28 of them under CC BY-SA 3.0 and the one pointing at the city's spatial-data hub under non-commercial CC BY-NC 3.0
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Counted on 28 August 2026 via the portal's public API (informationHolderSlug=tartu-linnavalitsus): total 29. Licences read from each dataset's distribution records over the same API: 28 carry 'CC_BY_SA_3.0'; 'Tartu linna ruumiandmed' — whose landing page is the city's GeoHub spatial-data site — carries 'CC_BY_NC_3.0'.
Caveat
Our own dated API count — recompute against the live portal before reusing the figures; the catalogue changes.

Sources carrying this claim

  1. Estonian national open-data portal API — datasets held by Tartu Linnavalitsus
Claim 11 clm-b6fe9ce97add11f1 descriptive
went dark with no announced shutdown
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
No closure statement was found on city, project or Telia channels; the disappearance is dated only by the archive's last live capture (17 February 2025, HTTP 200) against a failed DNS resolution on 28 August 2026. The city business portal's page still links the dead address.
Caveat
An absence claim: it cannot be proven exhaustively that no notice exists, only that none was found in the operator record. Find is null for the same reason as the snippet's disappearance claim.

Sources carrying this claim

  1. Internet Archive — last capture of the Tartu city portal (tarktartu.telia.ee)
  2. Business Tartu (city business portal) — Telia's IoT Smart City Platform
Claim 12 clm-87efd59d28e69d3d descriptive
kept running as the city's working IoT store
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The thesis's 2025 account treats the Cumulocity instance as the live store behind its integration — the 'Overview of used datasets' table lists daily object volumes for pedestrian, cycle and car counters, street lights, bike share and buildings.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Savik, Oleg — Tartu Smart City data integration between the Cumulocity IoT database and ArcGIS (University of Tartu, 2025)
Claim 13 clm-d1768aa8dc24255c descriptive
rebuilding the real-time layer on an API of its own while its open datasets sit on the national portal
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The thesis documents the city-built Reaalajaandmed API as Cumulocity's intended replacement; the city's own open-data page states 'Tartu linnavalitsuse poolt avaldatud andmed on leitavad Eesti avaandmete teabeväravast' — data published by Tartu city government is found on the Estonian national open-data portal.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Savik, Oleg — Tartu Smart City data integration between the Cumulocity IoT database and ArcGIS (University of Tartu, 2025)
  2. Tartu city government — Avaandmed (open data) page

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 2026-08-28-tartu-baseline effective 2026-08-28 · created 2026-08-28

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

sha256:8ffac9dd0401d20938835bb3fd757e88faa5e946c5e89dafb8ce65aac504694d
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
13
of 13 claims mapped
8
source dossiers
3
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
City of Tartu (Tartu linnavalitsus); IoT platform provided by Telia Eesti
Actor types
city-government, private
Funding model
grant
Funding description
Built under the EU Horizon 2020 SmartEnCity grant (GA 691883); the city operates the successor layer
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

8 source dossiers

Tark Tartu project site — SmartEnCity overview tarktartu.ee · 1 linked claim

Open original source ↗

Stable source ID
src-28b50927c14b4f0f
Publisher
Name not classified · tarktartu.ee
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-28
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The Tartu project site's overview of SmartEnCity: the project ran from February 2016 to July 2022, the pilot area is the 0.39 km2 hruštšovka district in the city centre, and Telia Eesti AS is listed among the project partners.

Descriptive only — not page/paragraph exact
Claims linked
CORDIS — SmartEnCity project record (GA 691883) cordis.europa.eu · 2 linked claims

Open original source ↗

Stable source ID
src-46b9d6ca70317dbf
Publisher
Name not classified · cordis.europa.eu
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-28
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The EU's own record of SmartEnCity: 1 February 2016 to 31 July 2022, lighthouse cities Vitoria-Gasteiz, Tartu and Sonderborg, participant list including TARTU LINN and TELIA EESTI AS.

Descriptive only — not page/paragraph exact
Claims linked
Savik, Oleg — Tartu Smart City data integration between the Cumulocity IoT database and ArcGIS (University of Tartu, 2025) dspace.ut.ee · 8 linked claims

Open original source ↗

Stable source ID
src-322d209c6eada9ef
Publisher
Name not classified · dspace.ut.ee
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-28
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Computer-science thesis building a data pipeline from the city's Cumulocity instance into ArcGIS. Describes Cumulocity as the platform the City of Tartu uses as its primary platform for managing IoT devices, puts it at about 19,000 registered devices and about 1.3 terabytes as of 2024 (citing a 2024 University of Tartu thesis), lists the live datasets (pedestrian and cycle counters, car-traffic counters, street-light state, bike-share use, building energy), names the new city API Reaalajaandmed as the intended replacement for Cumulocity, and notes that public dashboards are shared through the city's ArcGIS portal.

Descriptive only — not page/paragraph exact
Claims linked
Business Tartu (city business portal) — Telia's IoT Smart City Platform business.tartu.ee · 3 linked claims

Open original source ↗

Stable source ID
src-0afc12072bad753a
Publisher
Name not classified · business.tartu.ee
Type / language
web-page · language not classified
Published
2021-08-21
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-28
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The city's business portal on the platform: Tartu City uses Telia's IoT platform for energy monitoring and sensor data, and Telia provides a portal service for Estonian eID-based data ownership, visualisation and data sharing. The page's project link points to tarktartu.telia.ee.

Descriptive only — not page/paragraph exact
Claims linked
Invest in Estonia — Smart and green, Tartu attracts talent investinestonia.com · 1 linked claim

Open original source ↗

Stable source ID
src-60b50b320259f124
Publisher
Name not classified · investinestonia.com
Type / language
web-page · language not classified
Published
2021-12-17
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-28
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

National investment-promotion feature describing the portal built with Telia: users see in real time the movement of public transport, the traffic situation, electric-car charging station use and city-bike availability, with building energy use announced as the next feed.

Descriptive only — not page/paragraph exact
Claims linked
Internet Archive — last capture of the Tartu city portal (tarktartu.telia.ee) web.archive.org · 2 linked claims

Open original source ↗

Stable source ID
src-e2b8251934bf6c83
Publisher
Name not classified · web.archive.org
Type / language
web-page · language not classified
Published
2025-02-17
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-28
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The Wayback Machine's most recent capture of the city portal, answering HTTP 200 on 17 February 2025.

Descriptive only — not page/paragraph exact
Claims linked
Tartu city government — Avaandmed (open data) page tartu.ee · 1 linked claim

Open original source ↗

Stable source ID
src-9cb22f3df644c1e9
Publisher
Name not classified · tartu.ee
Type / language
web-page · language not classified
Published
Not recorded
Updated
2024-11-17
Source last checked
No source-level check date
Record last verified
2026-08-28
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The city's open-data page: data published by Tartu city government is found on the Estonian national open-data portal ('Tartu linnavalitsuse poolt avaldatud andmed on leitavad Eesti avaandmete teabeväravast').

Descriptive only — not page/paragraph exact
Claims linked
Estonian national open-data portal API — datasets held by Tartu Linnavalitsus andmed.eesti.ee · 1 linked claim

Open original source ↗

Stable source ID
src-611e0fa107c46708
Publisher
Name not classified · andmed.eesti.ee
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-28
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Machine-readable listing behind the dataset count: 29 datasets held by Tartu Linnavalitsus on 28 August 2026. Licences sit in each dataset's distribution records via the same API: 28 carry CC BY-SA 3.0 and one, 'Tartu linna ruumiandmed', carries CC BY-NC 3.0; its landing page is the city's GeoHub spatial-data site.

Descriptive only — not page/paragraph exact
Claims linked
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.