Var. 20 a 2 Clav.

Recording by Johann Sebastian Bach.

Recording identifiers

ISRC
USSM11506196
CopyrightID (CopyrightChains transaction hash)
0xd5bb19b6784ec794f3e6308a81891ce9e61e7c3377d0da3673cadda6b92a6026
Copyright registration time
2026-06-10T03:03:22+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:27afbd17896e482be7b8a2043b3351a15aa45f60d6fee5412f08c24fdeb1e5c9

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.