The Nutcracker, Op. 71: No. 12d Trépak (Russian Dance)

Recording identifiers

ISRC

AUAB09850016

CopyrightID (CopyrightChains transaction hash)

0x71cbd1401e387f3ee8019b62b006d9620d28a1f9d00ad6d8cc1d6672a220bdd7

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T15:20:15Z

Bitcoin block

960418

Canonical record hash

sha256:343592b8976070e663af53d398ff940908baf557bf9b4f39ec960fa9dc98d2b7

• 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.