Le nozze di Figaro, K. 492: "Fünfe, zehne"

Recording identifiers

ISRC

DEF056131702

Release date of the album this recording appears on

1962-07-01

CopyrightID (CopyrightChains transaction hash)

0xc4b04634f0a849ab3d8085be0dd76ba2eee3932047712acd9845abca819e8a0f

Copyright registration time

2026-07-31T01:27:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T02:19:15Z

Bitcoin block

960334

Canonical record hash

sha256:68af99c247ebf766f0b9a329ba6d6031d870b977f4d3d873e3425c1ac5debfb0

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF056131702

What this proof establishes

This recording was released in 1962, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.