Die Kunst der Fuge, BWV 1080: Contrapunctus IX a 4 alla duodecima

Recording identifiers

ISRC

GBF071740009

Release date of the album this recording appears on

2017-11-10

CopyrightID (CopyrightChains transaction hash)

0x04897d7b262a49e08e038211514c15fe805222923e45bdb37c271a80e2f90329

Copyright registration time

2026-07-06T07:07:10+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T18:39:05Z

Bitcoin block

957073

Canonical record hash

sha256:2e679d0d85e93342db187941ea41e3440940faa5513465d12b07cc9db700c996

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF071740009

What this proof establishes

This recording was released in 2017, 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.