String Quartet No. 1, Op. 20: IV. Allegramente rustico

Recording identifiers

ISRC

HKI190879104

CopyrightID (CopyrightChains transaction hash)

0xd2df52071aba4f55d37df499ea8e9d546873dc43b2e2464f093e131ffee996f6

Copyright registration time

2026-07-31T07:28:11+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T08:26:41Z

Bitcoin block

960368

Canonical record hash

sha256:4f28fda94eabd1fd1992df3ed104f919bfad5ad7e3ad074de87637692b22c391

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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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.