Borodin: String Quartet #2 In D - 3. Andante, "Nocturne"

Recording identifiers

ISRC

USSJ10401384

CopyrightID (CopyrightChains transaction hash)

0xc94da63ec294513b777c367d1213ed4dde7c7c53db29de609d7aacea499e748d

Copyright registration time

2026-07-07T17:06:41+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:f61523ff5d9f5ef36eeb3110babe80ea1e157b63929dc39289376ded45526508

• Verify the CopyrightID on CopyrightChains
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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.