12 Notations for Piano: V. Doux et improvisé

Recording identifiers

ISRC

DEF059331205

CopyrightID (CopyrightChains transaction hash)

0x91683c05585bd3149479a8b900c5405052ed0f1dee18bf639a4da809c6f08379

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T15:27:29Z

Bitcoin block

960422

Canonical record hash

sha256:3afc8d74c5bd060979fbfe90310b5ae576ca0eca907db54fc1fd9a7b54235835

• 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.