Clarinet Quintet in A Major, K. 581: II. Larghetto

Recording identifiers

ISRC

GBAYC9600749

Release date of the album this recording appears on

2020-07-10

CopyrightID (CopyrightChains transaction hash)

0xb19f9fcd6258c95c844b27397ad33befb349cf50d89bec8eeabdb41fe72bfa29

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T06:39:12Z

Bitcoin block

960216

Canonical record hash

sha256:85c30e09d38f4d701d3795ac8b7bef1694140b6d546de24f3ff8af766433270f

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC9600749

What this proof establishes

This recording was released in 2020, 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.