The Nutcracker, Op. 71, Act II: Pas de deux

Recording by Pyotr Ilyich Tchaikovsky.

Recording identifiers

ISRC
GBAYC1000876
CopyrightID (CopyrightChains transaction hash)
0x0aba106f9ba6dde364c4a9942d3660cc25fc9961ef7f244e32111db82829c3e3
Copyright registration time
2026-06-01T19:57:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T05:09:12Z
Bitcoin block
956312
Canonical record hash
sha256:50e61b9a50da4643a96e0e1fd068b86b64c49b63c34227b3e72c35910f7fbb40

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.