String Quartet No. 5 in D Major, Hob. III:79: II. Largo cantabile e mesto

Recording identifiers

ISRC

USSM18100989

CopyrightID (CopyrightChains transaction hash)

0xdc302c08092bd92935a857c3f2c23ae18366d88c7e922ff19941d6ab702bbb63

Copyright registration time

2026-07-31T16:33:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T17:29:52Z

Bitcoin block

960441

Canonical record hash

sha256:98ac524c051bd95eaede34fcc724ece4fe2a2188151db150f5d2bc6300362700

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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.