Nocturnes, Op. 9: No. 1, Larghetto in B-Flat Minor

Recording identifiers

ISRC

GBAYC0500188

Release date of the album this recording appears on

2020-10-22

CopyrightID (CopyrightChains transaction hash)

0x1bbce78e875169643eb06bd3697a30d83282daa956a38952dac3131a246e5e55

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T14:28:24Z

Bitcoin block

960117

Canonical record hash

sha256:88d1b2c52ca0da547dc75bd5ee417cc56a1d50a41461c089bdecce554a4649b2

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC0500188

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.