6 Pieces, Op. 51: No. 6, Valse sentimentale. Tempo di valse

Recording identifiers

ISRC

FRZ130802000

Release date of the album this recording appears on

2009-04-06

CopyrightID (CopyrightChains transaction hash)

0xbcfc40b89ea98a4aee2bbf9133efd3e62314e398d8043f60c4400cb051cd7b19

Copyright registration time

2026-07-31T16:15:58+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T16:33:26Z

Bitcoin block

960435

Canonical record hash

sha256:f4af095262b03354be6aa8af63dbb6f6063acd4996354a5b07d84003291cfdfa

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FRZ130802000

What this proof establishes

This recording was released in 2009, 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.