50 Variations on a Waltz by Diabelli: Variation 20: Variation on Diabelli's Waltz

Recording identifiers

ISRC

CH0049900350

Release date of the album this recording appears on

1999-01-01

CopyrightID (CopyrightChains transaction hash)

0xd3977e694a950becf58ee600d78c9d454967ee80681702b7b59a77a0a25ee0c0

Copyright registration time

2026-07-31T10:26:43+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T12:24:41Z

Bitcoin block

960397

Canonical record hash

sha256:38e1cb41db30cd15c198312f7d7c4d814f2428a88a4bb35443ded9f2a5ad75a5

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC CH0049900350

What this proof establishes

This recording was released in 1999, 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.