The Nutcracker: Pas de deux

Recording by Pyotr Ilyich Tchaikovsky.

Recording identifiers

ISRC
DKB6A1100113
CopyrightID (CopyrightChains transaction hash)
0x487ed5dcb86c32b99da62916e48272eb867090eea5030767782d0bacf784df6b
Copyright registration time
2026-06-24T16:18:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T05:09:12Z
Bitcoin block
956312
Canonical record hash
sha256:f7abe69af2f9cd1315179295ebb062cc753a3ede8c42a541081f706bea2423da

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.