String Quartet No. 1, Op. 20: I. Allegro violento ed agitato

Recording identifiers

ISRC

NLY330901084

CopyrightID (CopyrightChains transaction hash)

0x5ecfd1f0ca7513bac5b8c43466a181356ad430ec2c315b3fe3b108264d13aa85

Copyright registration time

2026-07-31T20:12:34+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T20:22:46Z

Bitcoin block

960459

Canonical record hash

sha256:efff5854b8ffb58dba56cd026cf44cdde815f0db3244398aef79c7dfebbcaafa

• 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.