String Quartet In E Flat, Hob. III:38, Op. 33 No. 2: 1. Allegro moderato, cantabile

Recording identifiers

ISRC

DEN960000851

CopyrightID (CopyrightChains transaction hash)

0x50c7ee35c442081523181c7ca6d17808ff366bc57ec844db39b9ea8e466b7036

Copyright registration time

2026-06-20T03:57:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:c2569d65157ce754a78869c67eb24f6f9ce9edca8b191cf009af90548656c211

• 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.