Bach, JS: Klavierbüchlein für Wilhelm Friedemann Bach: No. 4, Prelude in D Minor, BWV 926

Recording identifiers

ISRC

FRZ119001614

Release date of the album this recording appears on

2007-04-02

CopyrightID (CopyrightChains transaction hash)

0x56fd4f55bb5e24aec7e1e8efe6e95b20938a61894add1295152e828b73bf87db

Copyright registration time

2026-07-30T16:17:07+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T17:26:40Z

Bitcoin block

960285

Canonical record hash

sha256:6c7627a5f59f1791458931900ba7e3f1a74a6e3c0328e8edcabfc758237467ce

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FRZ119001614

What this proof establishes

This recording was released in 2007, 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.