Act I, Swan Lake No. 9, Finale – Swan theme

Recording by Pyotr Ilyich Tchaikovsky.

Recording identifiers

ISRC
PLL431499899
CopyrightID (CopyrightChains transaction hash)
0x18828fc238bf1bce8ba8299ebb1ce59e5fd15cb75ae3878468d4c70cedae97eb
Copyright registration time
2026-07-07T14:21:57+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:0ff882c8459f68e2eebb32e23eaec4cb32016638a20561556dba3b43970bc4ee

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.