London Sketchbook No. 32: Duo for Violin and Viola, K. 15gg

Recording identifiers

ISRC

DEE861600080

Release date of the album this recording appears on

2016-04-08

CopyrightID (CopyrightChains transaction hash)

0xe3e7fb671a9704bdeab04a7a3c832d7b9c0e96d280c7b35d952cc9cbe671263c

Copyright registration time

2026-07-31T09:30:31+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T09:50:11Z

Bitcoin block

960381

Canonical record hash

sha256:9bc0d506e338621b2e7b996b6afdf680d5c2343d3ea1bfed60be2e2616bc781f

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEE861600080

What this proof establishes

This recording was released in 2016, 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.