Permanent project revision

SIES-M Integrated Emergency & Security Camera Network

Revision 2026-08-20-source-dates · effective 2026-07-30

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

unreviewed

Created the first structured Evidence Passport with 1 claim and 3 source dossiers.

sha256:9f6548f124d9fc53be45552f73da5ad4bcc09e2aa520177edc6ade98157b6060

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
3: 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-3bf6bb74696c2b2c quantitative

a 26% drop in violent crime and a 17% drop in property crime within 120 meters of a camera, with no measurable displacement to nearby blocks

Published field: impact · verbatim
Mapping: mapped · no interpretation or interpolation added by this passport
What the mapping says: No support note recorded
Caveat: The entry's lesson warns this camera-specific deterrent effect does not explain Medellín's much larger multi-decade homicide decline, which has many non-technological drivers.

Sources carrying this claim

Gómez, Mejía & Tobón (2021), J. of Policy Analysis and Management

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 2026-07-30 · created 2026-08-20

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

sha256:9f6548f124d9fc53be45552f73da5ad4bcc09e2aa520177edc6ade98157b6060

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

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

Governance facts carried by the record

Operator: Secretaría de Seguridad y Convivencia de Medellín / Policía Nacional
Actor types: city-government, national-government
Funding model: public
Funding description: Not recorded
Cost: Not recorded
Ownership: Not recorded
Decision rights: Not recorded
Exit conditions: Not recorded

3 source dossiers

SIES-M — Alcaldía de Medellín medellin.gov.co · background

Open original source ↗

Stable source ID: src-736c68b69ec6e052
Publisher: Name not classified · medellin.gov.co
Type / language: web-page · language not classified
Published: 2021-09-17
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-30
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
Official operator page: current camera breakdown (3,230+), agencies, technology components.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

El Colombiano — SIES-M inaugurada el 24 de octubre de 2011 elcolombiano.com · background

Open original source ↗

Stable source ID: src-eee17bd3b7cb1986
Publisher: Name not classified · elcolombiano.com
Type / language: web-page · language not classified
Published: 2011-10-24
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-30
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
Launch date, initial ~350-camera count, COP 26 billion cost.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

Gómez, Mejía & Tobón (2021), J. of Policy Analysis and Management onlinelibrary.wiley.com · 1 linked claim

Open original source ↗

Stable source ID: src-e7685647ef91ea64
Publisher: Name not classified · onlinelibrary.wiley.com
Type / language: web-page · language not classified
Published: 2021-01-05
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-30
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
Peer-reviewed quasi-experimental evaluation of Medellín's 2013-2018 camera rollout.
Descriptive only — not page/paragraph exact
Claims linked: clm-3bf6bb74696c2b2c

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.