Var. 2 a 1 Clav.

Recording by Johann Sebastian Bach.

Recording identifiers

ISRC
USSM11506178
CopyrightID (CopyrightChains transaction hash)
0xa4c9bb8e58df2b8807ad4ff16fd3e4ab4f5d69d18c46ea0f4198ca3223d470c4
Copyright registration time
2026-06-08T11:37:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:99cefba2e1def33c29c143bfe0ea2b7dbd15b6c832322ff7d214d9547b28e5eb

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.