String Quartet No. 15 in G, D.887: 4. Allegro assai

Recording identifiers

ISRC

NLA507622004

CopyrightID (CopyrightChains transaction hash)

0xa2c75edc619a090d6721da0d8d7ca368cf38e0f655a180f612ec213dff0750b5

Copyright registration time

2026-07-07T20:36:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:b07ffa7542cbd8c4489b2a2904732309d88800d3ba53025c3032c511bf47ccb4

• 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.