The full record behind a project page: every claim with a stable id, a dossier per source, the gaps written down as gaps, and a permanent copy of every earlier version at its own address.
🤖 This definition was generated with AI from the sources linked throughout. It has not had a complete human review — treat it as a starting point and follow the sources. How this works.
An Evidence Passport is the complete record standing behind a project page — the thing you open when the summary is not enough. It holds every claim under a stable identifier, a dossier for each source, the classification and dates of the entry, and, crucially, its gaps: where a date, a locator or a figure could not be established, the passport records the absence instead of filling it with something plausible.
The part that makes it worth having is that it is append-only. A correction never overwrites what was there before: it appends a new revision and moves the pointer, while the old snapshot keeps its own permanent address. Anyone who cited this atlas last year can still see exactly what it said and what it rested on, and can compare that with what it says now. Each snapshot is hashed, so a silent edit would not go unnoticed.
On a project page it sits behind Show your work at the foot of the article, together with the claim list and the forensic record. Boston's CharlieCard and Sydney's Opal card both carry one.
One limit, stated plainly: passports are marked unreviewed unless a person has signed them. The structure was produced by an AI-assisted migration, and structural work is not a human or expert endorsement. The rules the layer must follow are public in the Evidence Constitution.
Added 2026-08-25 · Part of the growing Smart City Glossary