Bartók: String Quartet No. 4 in C Major, Sz. 91: III. Non troppo lento

Recording identifiers

ISRC

GBAYC0703826

CopyrightID (CopyrightChains transaction hash)

0x7dee46f6993cc55d1251da295831856ff7a1074d14827c11e29a7a0ef4344cd8

Copyright registration time

2026-07-06T08:40:52+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T14:04:01Z

Bitcoin block

957046

Canonical record hash

sha256:e8eb3e114fb82f54db626756ab126b55693c0cfec6b2c499439b42a6372cac23

• Verify the CopyrightID on CopyrightChains
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What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.