Nocturne in Bb Minor (Nocturne Op. 9 No. 1 in B flat minor)

Recording identifiers

ISRC

BGA472002773

Release date of the album this recording appears on

2020-01-21

CopyrightID (CopyrightChains transaction hash)

0x56629e201774e5c72b38abda7c2a9872c3a278298f9d6622f7e8f3489dac06d0

Copyright registration time

2026-06-22T08:16:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:23808408e52e20bc119e20c5379648d7f570bc1bac049dda1f06956789717618

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC BGA472002773

What this proof establishes

This recording was released in 2020, 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.