1.1 KiB
ADR 0006: Source lineage and independence
Status: Accepted design; implementation scheduled for 0.5.
Corroboration must describe the direct provider, upstream dataset, transformation, and snapshot. Two providers that copied the same upstream assertion do not count as independent evidence merely because their URLs differ. Unknown lineage stays unknown.
Version 0.4 preserves provider-native provenance and never combines popularity or same-domain evidence into ownership confidence. Version 0.5 will add explicit lineage fields and independence-aware corroboration without rewriting history.
Rejected alternatives
Counting provider names as independent evidence rewards copied datasets. Guessing lineage from matching text creates another unsupported inference. Dropping a source because lineage is unknown destroys useful conflicting evidence.
Compatibility
The v0.4 policy does not award quorum from source count, so absent lineage cannot inflate reviewer authority. Future lineage fields must be additive provenance; old assertions remain byte-identifiable and are never rewritten as independent.