String Quartet No. 8 in E minor, Op. 59 No. 2 -"Rasumovsky No. 2": 3. Allegretto

Recording identifiers

ISRC

NLA507300993

CopyrightID (CopyrightChains transaction hash)

0xf791cc71e0e8919fe7578f308167fcd6317ff3545138a9dd6c38e46ef82b67c8

Copyright registration time

2026-07-31T20:37:14+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T21:25:57Z

Bitcoin block

960468

Canonical record hash

sha256:988eea10114fa1d035a99f208f6bd8a6d5713572ab17c1615b1a540a8b84879c

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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.