Bartók: String Quartet No. 4 in C Major, Sz. 91: IV. Allegretto pizzicato

Recording identifiers

ISRC

GBAYC0703827

Release date of the album this recording appears on

2008-01-21

CopyrightID (CopyrightChains transaction hash)

0x283cc7c0cfbfa7d0bfd40c7097103a318448cb6fb0750fa8392c624e5f97c093

Copyright registration time

2026-07-06T02:40:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-06T06:56:49Z

Bitcoin block

956889

Canonical record hash

sha256:56908d827c1bf648a2ee9cd6c5e3dc77f02d8b8f50128365799176651cd988f5

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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• Recording evidence summary for ISRC GBAYC0703827

What this proof establishes

This recording was released in 2008, 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.