{"issuer":"AxiomSeal","purpose":"audit report signing (EU AI Act Art. 12 record-keeping evidence)","signed_bytes_spec":"canonical JSON of the report without the 'signature' field: json.dumps(payload, sort_keys=True, separators=(',', ':'), ensure_ascii=False).encode('utf-8')","keys":[{"key_id":"ef00747dbb312d52","algorithm":"Ed25519","public_key_hex":"7d4d12bf24f4d138dc008fbbd1bfc1d1b55c26eb66d085524956d06b4d84bd54","status":"active"}]}