Duet for Viola and Cello, WoO 32 "Eyeglass Duo": I. Allegro

Recording identifiers

ISRC

KRUM71800176

Release date of the album this recording appears on

2018-03-19

CopyrightID (CopyrightChains transaction hash)

0x575b10794b9a89c68131798ed173bcf819a9de73d3df7b267fc65cffba77150c

Copyright registration time

2026-07-30T21:19:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T21:35:24Z

Bitcoin block

960317

Canonical record hash

sha256:def1efd7c1a8dd92a5d3d916611a6d92b0b29f27eb7618cd25395503b6b6db39

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC KRUM71800176

What this proof establishes

This recording was released in 2018, 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.