cryptographic source signature
Required by the v0.18 signed-evidence reference envelope.
Evidence ceiling E3Proof boundary
SIGNED EVIDENCE
A source_id is not an identity proof.
Site 60 adds Ed25519 reference evidence envelopes. Every evidence statement is signed by a source key anchored in the accepted graph and is bound to the exact Reality IR semantic hash and graph hash.
Required bindings
Evidence is rejected before predicate evaluation when trust binding fails.
The outcome engine never treats a JSON field naming an authoritative source as proof that the source actually issued it.
source key anchored in accepted Reality Graph
Required by the v0.18 signed-evidence reference envelope.
semantic-hash binding
Required by the v0.18 signed-evidence reference envelope.
graph-hash binding
Required by the v0.18 signed-evidence reference envelope.
evidence-envelope integrity
Required by the v0.18 signed-evidence reference envelope.
observation time
Required by the v0.18 signed-evidence reference envelope.