Swan Lake, Act II : Waltz No. 13

Recording by Pyotr Ilyich Tchaikovsky.

Recording identifiers

ISRC
CA5KR1949463
CopyrightID (CopyrightChains transaction hash)
0xc22637a5e70a54ff7f5122ed8bf513d53ce40aa32586d0c13679d5ef13116852
Copyright registration time
2026-07-07T00:17:52+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:32e5b0db01c7ae33670617dcb13b76ad292a134a5a2297c3b0edf7d755bbd547

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.