Duo for Violin and Viola in B-Flat Major, K. 424: II. Andante cantabile

Recording identifiers

ISRC

KRUM71800174

Release date of the album this recording appears on

2018-03-19

CopyrightID (CopyrightChains transaction hash)

0xebe90d58e04a6b204bcb2ada15b83a8e063c42313fe37b0f0cb6f5e6a9cc0182

Copyright registration time

2026-07-31T15:03:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T15:20:15Z

Bitcoin block

960418

Canonical record hash

sha256:e3c2dfe2bbbee9c88bac2ad5a6928ba6a8499694c3607e84289135884234d413

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC KRUM71800174

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.