1001 Smart Cities

Permanent project revision

City of Miami Open Data: A Live GIS Hub and a Stalled Portal

Revision 2026-10-05-baseline · effective 2026-10-05

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

unreviewed

Created the first structured Evidence Passport with 11 claims and 8 source dossiers.

sha256:4ff4ca83ab91da143f98716535b8e317c2e780da3a3badd89ad61ca0f1c556c2
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.
11
of 11 claims mapped
8
source dossiers
0
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-c5ee8fdfb4893619 descriptive
The City of Miami has published open data through two unconnected portals
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Socrata's Discovery API lists datasets under data.miamigov.com, and the city's GIS team runs a separate Esri ArcGIS Hub.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Socrata Discovery API — data.miamigov.com
  2. City of Miami Open Data GIS (ArcGIS Hub)
Claim 2 clm-0376a7f1fee9c79a quantitative
Socrata's catalogue still lists 12 datasets under data.miamigov.com
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The Discovery API returns resultSetSize 12 for the domain data.miamigov.com.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Socrata Discovery API — data.miamigov.com
Claim 3 clm-1830cf9e81dd077a quantitative
none carrying a licence and none updated since June 2022
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
No dataset carries a license value; the newest updatedAt is 2022-06-01.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Socrata Discovery API — data.miamigov.com
Claim 4 clm-87d0c5a0afdacb19 descriptive
the working catalogue is an Esri ArcGIS Hub run by the Department of Innovation and Technology's GIS team
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Item metadata: '© 2019, City of Miami, Department of Innovation and Technology, GIS Team'; the hub is an Esri ArcGIS Hub site.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. City of Miami Open Data GIS (ArcGIS Hub)
  2. ArcGIS item metadata — City Boundary (licence and operator)
Claim 5 clm-19bdb97d26d7a0d4 quantitative
whose most active layers carried modification timestamps of 5 October 2026
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The search API sorted by modification date returns Tree Permits, City of Miami 311 Service Requests Since 2015 and Building Permits Since 2014 with modified timestamps on 5 October 2026.
Caveat
A live reading; the timestamps move with every update.

Sources carrying this claim

  1. ArcGIS search API — all items owned by CityMiamiFL
Claim 6 clm-770058fb8811e82f descriptive
the city's Data Explorer page links only this hub
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The Data Explorer page links the ArcGIS hub ('datahub-miamigis.opendata.arcgis.com') and no longer links data.miamigov.com.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. City of Miami Data Explorer
Claim 7 clm-f102c14069ad319b quantitative
80 of the hub's 85 feature services ship a Creative Commons Attribution 4.0 deed in its metadata
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Of the 85 feature services returned, 80 carry 'Creative Commons Attribution 4.0 International License' in licenseInfo.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ArcGIS search API — all City of Miami feature services with licence text
Claim 8 clm-f76be390c91d39a5 descriptive
where Miami-Dade County's separate county hub ships only an 'as is' accuracy disclaimer
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
County items owned by MDPublisher read: 'Miami-Dade County provides this data for use "as is". The areas depicted by this map/data are approximate ...'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ArcGIS search API — Miami-Dade County items (contrast)
Claim 9 clm-0aad5653eba9d78f descriptive
The Data Explorer cites no ordinance, licence or terms of use connecting the data to Florida's public records law
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The Data Explorer page carries no licence statement, terms of use or reference to Florida Chapter 119; its footer reads '© 2026 City of Miami'.
Caveat
An absence on the page, not a search of the city code.

Sources carrying this claim

  1. City of Miami Data Explorer
Claim 10 clm-2e46c6c3e49fd236 descriptive
Miami's Data Explorer states no licence at all
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The Data Explorer page carries no licence statement.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. City of Miami Data Explorer
Claim 11 clm-9dfd901bafbeb339 quantitative
80 of the hub's 85 feature services carry a Creative Commons Attribution 4.0 deed in their metadata
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
80 of 85 feature services carry the CC BY 4.0 licence text in licenseInfo.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ArcGIS search API — all City of Miami feature services with licence text

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 2026-10-05-baseline effective 2026-10-05 · created 2026-10-05

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

sha256:4ff4ca83ab91da143f98716535b8e317c2e780da3a3badd89ad61ca0f1c556c2
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
11
of 11 claims mapped
8
source dossiers
0
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
City of Miami — Department of Innovation and Technology, GIS team
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

8 source dossiers

City of Miami Open Data GIS (ArcGIS Hub) datahub-miamigis.opendata.arcgis.com · 2 linked claims

Open original source ↗

Stable source ID
src-5554d2239aae0d1c
Publisher
Name not classified · datahub-miamigis.opendata.arcgis.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
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The live catalogue. Run by the city's GIS team on Esri ArcGIS Hub, separate from the county hub at gis-mdc.opendata.arcgis.com.

Descriptive only — not page/paragraph exact
Claims linked
ArcGIS item metadata — City Boundary (licence and operator) arcgis.com · 1 linked claim

Open original source ↗

Stable source ID
src-380f62cc52492559
Publisher
Name not classified · arcgis.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
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

licenseInfo: 'This work is licensed under a Creative Commons Attribution 4.0 International License.' accessInformation: '© 2019, City of Miami, Department of Innovation and Technology, GIS Team'. Item created 2019-02-18.

Descriptive only — not page/paragraph exact
Claims linked
ArcGIS search API — all items owned by CityMiamiFL arcgis.com · 1 linked claim

Open original source ↗

Stable source ID
src-9a24d6bb14b3181c
Publisher
Name not classified · arcgis.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
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Returns total 97. Tree Permits, City of Miami 311 Service Requests Since 2015 and Building Permits Since 2014 each carry the CC BY 4.0 licenseInfo string and a modified value of 1785071035000, which is 2026-07-26.

Descriptive only — not page/paragraph exact
Claims linked
ArcGIS search API — feature services only arcgis.com · background

Open original source ↗

Stable source ID
src-3a8fc50be4e65cb6
Publisher
Name not classified · arcgis.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
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Returns total 85, the count of actual data services within the 97 published items; the remainder are maps, apps and image assets.

Descriptive only — not page/paragraph exact
Claims linked
Background source; no baseline claim points here
Socrata Discovery API — data.miamigov.com api.us.socrata.com · 3 linked claims

Open original source ↗

Stable source ID
src-af39c139523d7471
Publisher
Name not classified · api.us.socrata.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
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

resultSetSize 12. The license key is absent on every dataset returned. Newest updatedAt is 2022-06-01; 'Miami FL- Revenues' shows 2018-07-16, evidencing the portal existed by mid-2018.

Descriptive only — not page/paragraph exact
Claims linked
City of Miami Data Explorer miami.gov · 3 linked claims

Open original source ↗

Stable source ID
src-55f04a047c39b077
Publisher
Name not classified · miami.gov
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Links both data.miamigov.com and the ArcGIS hub. Publishes no terms of use, no licence statement, and no citation to Florida Chapter 119; the site footer asserts '© 2026 City of Miami'.

Descriptive only — not page/paragraph exact
Claims linked
ArcGIS search API — Miami-Dade County items (contrast) arcgis.com · 1 linked claim

Open original source ↗

Stable source ID
src-04a31551ee84cc64
Publisher
Name not classified · arcgis.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
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

County datasets are owned by 'MDPublisher' and their licenseInfo reads 'Miami-Dade County provides this data for use as is. The areas depicted by this map/data are approximate, and are not accurate to surveying or engineering standards' — an accuracy disclaimer, not a licence deed.

Descriptive only — not page/paragraph exact
Claims linked
ArcGIS search API — all City of Miami feature services with licence text arcgis.com · 2 linked claims

Open original source ↗

Stable source ID
src-ab76308768127177
Publisher
Name not classified · arcgis.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
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

All 85 feature services owned by CityMiamiFL; 80 carry the Creative Commons Attribution 4.0 licence text in licenseInfo, 5 carry none.

Descriptive only — not page/paragraph exact
Claims linked
Known limits of this file
  • 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.