# description
Portable, tamper-evident proof of an AI-initiated production action. Emitted at the production action boundary; verifiable by any party (auditor, regulator, insurer) without trusting the agent framework or model provider.

# properties.receipt_id.description
Globally unique receipt identifier (UUID v4 or v7 recommended).

# properties.issued_at.description
RFC 3339 timestamp when the receipt was emitted.

# properties.arguments_hash.description
Lowercase hex SHA-256 of canonicalized arguments. Proves the executed arguments match what was approved.

# properties.receipt_hash.description
Lowercase hex SHA-256 of all preceding fields canonicalized (sorted keys, no whitespace, UTF-8). Tamper-evidence anchor.