Nocturne No. 15 in F minor, Op. 55 No. 1

Recording identifiers

ISRC

GBF078741026

Release date of the album this recording appears on

1988-09-01

CopyrightID (CopyrightChains transaction hash)

0x5d168cd0a288c556b11a2f9cf4929a2cbd9bac5426a1c34b80aa452fc5d4dc8a

Copyright registration time

2026-07-30T20:17:36+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T20:35:49Z

Bitcoin block

960309

Canonical record hash

sha256:9738ac17a0d16a8655c246bf176f4f0ca629ef08d19f3e097906b22e0e506e8c

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF078741026

What this proof establishes

This recording was released in 1988, 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.