Nocturne No. 20 in C-Sharp Minor, Op. posth (arr. for violin and piano)

Recording identifiers

ISRC

PLA169526304

Release date of the album this recording appears on

2013-09-01

CopyrightID (CopyrightChains transaction hash)

0x4bcfad9c27dec67b2385f5b3f78bacc64ca265ca020cc7ee0d9bc5b844b1b8b8

Copyright registration time

2026-06-19T13:31:30+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:87c2fde6cf0d3566e837eb7bc75dfa905f4d9c91cff8eaa5cfe3c78d250b7c48

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC PLA169526304

What this proof establishes

This recording was released in 2013, 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.