What does one record in the chronology mean?

An event with a date, a description and claims backed by reviewed sources.

Why does one event have different accounts?

Sources can disagree. Instead of choosing one wording over another, we show the accounts next to the material they rely on.

What if the original page has changed?

The link and the preserved record stay in the archive, so the entry can still be checked later.

Methodology – January 2022

In short

The chronology is built from records that can be checked: each one has a date, a description and claims linked to sources. When sources disagree, the accounts are shown separately instead of being merged into one. Links and documents are preserved, so a record can still be checked after the original page changes.

Event → claim → source

Each event is split into individual claims. The sources behind each claim are shown alongside it.

Event: A record with a date and, when reviewed, a place.
Claim: A single statement inside an event that can be checked against sources.
Source: A link to a publication, document or archived copy with the provenance of the record.

Different accounts

When sources disagree, each account is shown separately with the material it relies on.

How sources are labelled

On an event page sources are grouped by their stance on the claim.

Supporting sources: Material that supports the wording.
Contradicting accounts: Material that presents a different account of events.
Context sources: Material that explains the context without directly supporting the wording.
Unclassified sources: Material whose stance is not yet classified.

Source independence has not been assessed automatically.

How sources are preserved

Links and documents are preserved so material can still be checked if the original page changes.

Only reviewed archive metadata is available.

What is not included

Material without a source and data that cannot be published are not included in the chronology.

Only material with sources is shown.

Coverage and gaps

Rights to material

Publications, documents and images remain the property of their owners. Full material opens at the original source when access is allowed.

The photographs selected for the stories do not yet have a confirmed publication permission or editorial clearance, so they are not shown on the site. Under the project owner's decision of 22 September 2026, an open licence is not a condition of the creative selection; the owner secures the clearances.

The additional stories and the rest of the site

The additional stories extend the reading but do not replace the other material on the site. The main report remains a separate account, the interactive map remains the geographical picture of the events, and the archive remains the collection of stored cards and sources. The stories do not replace the full chronology either.

Main report

Interactive map

Archive of cards and sources

Frequently asked questions

What does one record in the chronology mean?: An event with a date, a description and claims backed by reviewed sources.
Why does one event have different accounts?: Sources can disagree. Instead of choosing one wording over another, we show the accounts next to the material they rely on.
What if the original page has changed?: The link and the preserved record stay in the archive, so the entry can still be checked later.