Quintet in A Major for Clarinet, 2 Violins, Viola and Violincello, K. 581: II. Larghetto

Recording identifiers

ISRC

GBKTX1002887

Release date of the album this recording appears on

2010-10-18

CopyrightID (CopyrightChains transaction hash)

0x1ef0aede7cd831de5fdd716cd57456f8dac67b02a354b8be917699f684f5400e

Copyright registration time

2026-07-07T01:20:53+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:f657fe16eacf2c9bb1e35370dd8c41e2cb57affa3b7c0bed914cc41e8b35c2bf

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBKTX1002887

What this proof establishes

This recording was released in 2010, 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.