Six four-handed pieces, Op. 11: IV. Valse

Recording identifiers

ISRC

FRZ148901110

Release date of the album this recording appears on

2003

CopyrightID (CopyrightChains transaction hash)

0xd074f24ff923353883375f620ea013e2b76712ec7392f31fb658b03251f8db81

Copyright registration time

2026-07-07T06:16:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:c614861db4036f071e2470b57bb76dadaea9b0b0bbc3285369f1359a3725edd4

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FRZ148901110

What this proof establishes

This recording was released in 2003, 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.