String Quartet No. 1 in B Minor, Op. 50: I. Allegro

Recording identifiers

ISRC

DERK62464001

CopyrightID (CopyrightChains transaction hash)

0x37f6817acd333dca76e3851ef007b8cd7a7622e23b1ee53b63d48892b8861c9f

Copyright registration time

2026-07-30T01:37:16+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T02:05:19Z

Bitcoin block

960193

Canonical record hash

sha256:472e52751a2d508f6ab3440100535d2c47d48536d4c0a3ea13c81f83df682f47

• 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.