Chopin: Nocturne No. 11 in G Minor, Op. 37 No. 1

Recording identifiers

ISRC

FRZ119506020

Release date of the album this recording appears on

2002-01-01

CopyrightID (CopyrightChains transaction hash)

0x71e1183a87fbded2ecb38da017a73d680f2f34e427ea91c58078fab0bb14ca9b

Copyright registration time

2026-07-31T06:35:33+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T06:42:11Z

Bitcoin block

960360

Canonical record hash

sha256:c3a420b6aa00ff3c650e6d50392c482adc86f1aa96727833b4741ce3b8edc78e

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC FRZ119506020

What this proof establishes

This recording was released in 2002, 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.