commercial delivery terms-SA 4.0 license

Three unrelated sources converge on the same terms. The Wikipedia list of public US REITs is "commercial delivery terms-SA 4.0 (text) with GNU Free Documentation License where applicable", while its MediaWiki API remains free under separate Wikimedia API terms. OpenCellID Bulk Downloads carry "Creative Commons Attribution-ShareAlike 4.0 International", with mandatory visible attribution linking to opencellid.org and commercial exceptions "granted in writing by Unwired Labs".

Kaggle's PaySim - a synthetic mobile-money dataset - lists commercial delivery terms-SA 4.0, described as attribution plus share-alike for derivatives, with Kaggle Terms of Use applying to downloads. Across all three, the pattern holds: the licence is generous about reuse but binds anything you build on top to the same terms.

Share-alike shapes commercial strategy. A tower-location product derived from OpenCellID bulk dumps must ship under commercial delivery terms-SA 4.0 unless Unwired Labs grants a written exception - the record notes those are possible but must be explicit. Similarly, a REIT screening tool built from the wiki table inherits share-alike obligations on its derived tables.

Route selection matters too: pulling the same REIT content through the MediaWiki API engages Wikimedia's API terms rather than the article licence, which can be the cleaner path for automated systems. And synthetic data is not exempt - PaySim's share-alike travels with any model artefact or resampled corpus you redistribute.

1. Get commercial exceptions in writing. OpenCellID notes commercial exceptions are granted in writing by Unwired Labs - verbal assurances do not count.

1. Show attribution visibly. OpenCellID requires visible attribution plus a link to opencellid.org, a UI obligation as much as a legal one.

1. Compare API versus article routes. Wikipedia's MediaWiki API is free under separate Wikimedia terms - sometimes preferable to the commercial delivery terms-SA text path.

1. Extend share-alike to model outputs. PaySim derivatives fall under commercial delivery terms-SA 4.0 alongside Kaggle Terms of Use; plan disclosure accordingly.

Where to see it in context: crowdsourced-cell-tower-data.

Related entries:

• cc-by-4-0 drops the share-alike requirement.
• mit-license is the permissive code-side contrast.
• crowdsourced-cell-tower-data is the OpenCellID genre.

Industry context: industrial-reits data and telecom-tower-reits data.