The Nutcracker, Op. 71, Act I: No. 7, Scene. The Battle

Recording by Pyotr Ilyich Tchaikovsky.

Recording identifiers

ISRC
NLA508640809
CopyrightID (CopyrightChains transaction hash)
0x9e36ea941f62da8164fff0e164fe6cc8baad6869c47551c3cef1a7b7a0b2249c
Copyright registration time
2026-07-31T23:39:04+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-08-01T00:15:43Z
Bitcoin block
960487
Canonical record hash
sha256:6bbd48f6557c8ba89085a77cf7dec583a51de5a93a49fe6133413319c8850fc6

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.