Voices Of Spring, Waltz, Op. 410

Recording by Joseph Francek.

Recording identifiers

ISRC
US5540501976
Release date of the album this recording appears on
2011-04-26
CopyrightID (CopyrightChains transaction hash)
0x26f2752400d03eea186789d5dec72c44cbebe1959b80dd971ad5b63f05246992
Copyright registration time
2026-07-22T12:59:56+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-22T13:20:46Z
Bitcoin block
959132
Canonical record hash
sha256:7f4329254cc34fc5390a757d3fccd693e1af004b44cb45b7892c02a52fef3977

What this proof establishes

This recording was released in 2011, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.