String Quartet No. 3 in A Major, Op. 41/3: II. Assai agitato

Recording identifiers

ISRC

NLE422004010

CopyrightID (CopyrightChains transaction hash)

0xa34db3bf2f7de1a811d09c16dc718fe87d2a105c7841307c20236d91770e25d7

Copyright registration time

2026-06-27T07:53:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:023018c76a363b8aa1eb10d028c0121ece9b800f7f040d5ebe068b6f203728f7

• 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.