Changelog
Updates to the timeline
What was added, verified, and changed, with dates. This project is a glass box: the method and its revisions are part of the record.
- music in the timeline
Classical music & opera merged into the major timeline
The 29-era classical music and opera dataset is no longer a separate section. Its 233 events now sit inside the main year-by-year timeline, tagged Music & Opera, filterable like any other category. The standalone header menu was removed in favour of this tag. The full per-era scholarly folio, with all sources, lives at the music & opera folio. - integrity
Every scholarly source verified against Crossref and DataCite
The 161 Layer 2 citations were independently checked against the Crossref and DataCite registries. Every DOI resolves to a real paper; the title and author names shown now come straight from those registries (an earlier pass had placed journal names in the author field). Zero fabricated citations, zero retractions. - Layer 2
Scholarly evidence layer added via a Scite research swarm
A 29-agent Scite MCP research swarm gathered 161 peer-reviewed sources across all 29 music eras, retraction-enforced. Each era gained a scholarly-evidence panel with a synthesis, sources carrying a stance (supporting / contested / background), and the real debates historians are still having. - Layer 1
Classical music & opera timeline
A 29-era chronicle of Western classical music and opera, from Gregorian plainchant to twenty-first-century opera, generated by a parallel agent swarm. Every entry carries a place and an honest historical-confidence level (confirmed to legendary). - localisation
Icelandic translation pipeline
A CI-integrated pipeline localises the year-level corpus into Icelandic with strict schema and structural guards, so a new English year automatically produces a schema-valid Icelandic counterpart. - frontend rebuild
The Notebook, Stratum and Atlas views
A wholesale editorial rebuild: the parchment Notebook timeline, the Stratum data view, and the map-anchored Atlas globe, with a two-layer navigation and the methodology folio. - Phase 1
The 5,226-year corpus
The founding layer: every year from roughly 3200 BCE to 2025 CE researched by an async daemon under the ICCRA schema, 17,991 events with sources, certainty levels, and declared gaps. This is the timeline the music & opera work now sits inside.
The full commit history lives on GitHub. For how the timeline is built and its honesty protocol, see the methodology.