Nocturne from the Composition Notebook

Recording identifiers

ISRC

DEPI82509603

CopyrightID (CopyrightChains transaction hash)

0x0605cd4b52afd273ca9d7f7d20cc1a918cddec172d74ff50976ac46cd5aa0ada

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-22T15:38:35Z

Bitcoin block

959144

Canonical record hash

sha256:886bd072fd690c0fe6f9f7fd474847e22d0b14c3fba8220af3ac14f939d7b52a

• 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.