String Quartet No. 1 in A Minor, Op. 41 No. 1: I. Introduzione. Andante espressivo - Allegro

Recording identifiers

ISRC

NLA506700401

Release date of the album this recording appears on

2015-01-01

CopyrightID (CopyrightChains transaction hash)

0x8d4c4b514492d912df779930513e9055b5290b13e9b87f7782649675a0e5c92a

Copyright registration time

2026-07-31T18:01:43+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T18:48:12Z

Bitcoin block

960448

Canonical record hash

sha256:cee520b791e4cfb33d419492851fd4ebaa5782424dcfb9fb3fedb5fdb5c322cc

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC NLA506700401

What this proof establishes

This recording was released in 2015, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.