String Quartet No. 3 "On Polish Folk Themes": III. Vivace non troppo

Recording identifiers

ISRC

PLA161728603

CopyrightID (CopyrightChains transaction hash)

0x2ee13e530a33007f6110fc3ab651972a6c06be6b4ee6893cd39207362033ae01

Copyright registration time

2026-07-31T20:02:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T20:22:46Z

Bitcoin block

960459

Canonical record hash

sha256:d999a64902fc2c616cd397d611c8781bd88b9a95b00247ce1fab5872a862674f

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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.