String Quartet No. 31 in E-Flat Major, Op. 20 No. 1, Hob. III:31 "Sun Quartet No. 1": I. Allegro moderato

Recording identifiers

ISRC

FRX201644664

Release date of the album this recording appears on

1992-01-01

CopyrightID (CopyrightChains transaction hash)

0xa8630fe0eea164487adc0ac0f2ff104268733d3e4689980e8f9c5587a796f2a1

Copyright registration time

2026-07-06T07:20:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T13:25:45Z

Bitcoin block

957041

Canonical record hash

sha256:83c7ed378861d8b67f3614e29ffdd706de2838388d66731dcb1b4bf1f152d580

• Verify the CopyrightID on CopyrightChains
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• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FRX201644664

What this proof establishes

This recording was released in 1992, 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.