Variations Goldberg, BWV 988 (Arr. for Strings and Continuo): Variatio 4

Recording identifiers

ISRC

CAJ721572305

CopyrightID (CopyrightChains transaction hash)

0x8a3421b8ff9cdd8680c19f38a5a9d00d70eb0c4613a80d1105978acd8f9bf5ed

Copyright registration time

2026-07-07T00:59:08+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:9f794dddde7119c791a1d41c5799ff171b0ff67a4778fa55d9e88c8dcef68aaa

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.