Evidence objects
Every evidence object carries a stable ID, type, source, integrity hash, captured timestamp, qualification state, independence state, and linked claim IDs.
Source independence
Independence is an explicit source property. Interface styling or AI classification cannot create independence.
Claim correspondence
A source supports only the claims to which its evidence is explicitly linked. A credential must not generalize one corroborated claim into universal verification.
Custody
Applicable custody events identify actor, action, time, location, and integrity hash. Missing custody remains visible in failed requirements and upgrade path.