Nocturne, Op. posth. in C sharp minor: Lento - Remastered 2023, Studio 1973

Recording identifiers

ISRC

PL44J2323170

CopyrightID (CopyrightChains transaction hash)

0xc9e56fdbf62cc0b496ebf3749906e6f8d41f16fd104e901c3b7d9488eee43d9e

Copyright registration time

2026-08-01T00:11:49+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T00:40:43Z

Bitcoin block

960489

Canonical record hash

sha256:950c942f633670f38ddeb038a942b39023dbca30141fc95a7792735b5e791854

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.