AER-1 Field Reference

This reference follows draft-zambo-aer1-01. The schema version is 0.3; the document revision is -01.

Name	Type	Required	Description	Example
id	UUID	yes	Stable receipt identity	00000000-0000-4000-8000-000000000001
receipt_schema_version	string	yes	Receipt schema identifier	0.3
created_at	RFC 3339 string	yes	Timezone-bearing creation time	2026-09-27T00:00:00Z
tool	object	yes	name, version, and caller scope	{ name, version, scope }
provenance_class	enum string	yes	Execution, gateway observation, or agent report	EXECUTED BY ZAMBO
canonical_bytes	Base64 string	yes	Exact UTF-8 bytes used for hashing	e30=
output_hash	string	yes	sha256 plus 64 lowercase hex digits	sha256:...
verification_status	string	yes	Pass status after checks	verified

Verification notes

Decode Base64 strictly, reject invalid UTF-8, validate the calendar date, hash the exact bytes, and never reserialize a payload before comparison. A valid receipt proves the recorded observation and byte integrity, not an outside outcome.