Structured visa facts on this site are compiled from two kinds of sources, in this order of authority:
1. Official government portals (immigration ministries, national e-Visa systems) — linked from every page that cites them.
2. English Wikipedia reference tables — "Visa requirements for … citizens" and "Visa policy of …" pages — licensed under CC BY-SA 4.0. We use these as factual references with attribution; all wording on this site is original and no Wikipedia prose is reproduced.
Verification model: each fact stores its source(s), the date collected, and the date last verified. Facts older than 90 days are flagged on-page as unverified. Policy changes are detected via monitored snapshots and, where possible, confirmed against official announcements before publication — items not yet confirmed are clearly labelled.
Corrections: report inaccuracies via the contact link in the footer; verified corrections are applied and dated in the page history.