Nocturnes, Op. 27: No. 2, Lento sostenuto in D-Flat Major

Recording identifiers

ISRC

GBAYC9902177

Release date of the album this recording appears on

2021-11-27

CopyrightID (CopyrightChains transaction hash)

0x1ddef375d3bea505138b0d10967e5f4b1c3baad486a612a014cb58e825ffe735

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T02:19:15Z

Bitcoin block

960334

Canonical record hash

sha256:5d48b3ce7195e0a05e9a389d8b641f7db8f616ecca384a6992c5772a9da8d4bd

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC9902177

What this proof establishes

This recording was released in 2021, 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.