25 Duos for Violin and Cello: XXI. Valse bavaroise

Recording identifiers

ISRC

FR50X2075703

Release date of the album this recording appears on

2021-10-08

CopyrightID (CopyrightChains transaction hash)

0x44dd11d06289a36181a1530a1a3e53edc95476611572458571fa8dd73d27ff5f

Copyright registration time

2026-07-06T04:49:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-06T07:53:57Z

Bitcoin block

956894

Canonical record hash

sha256:de227f7f78684368a6c8b029f357a5d073e2f294d56f7473f6a24c9a6a0b954a

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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• Recording evidence summary for ISRC FR50X2075703

What this proof establishes

This recording was released in 2021, 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.