Sonata for Cello and Continuo in A minor, R.43: 1. Largo

Recording identifiers

ISRC

NLA506700381

CopyrightID (CopyrightChains transaction hash)

0x69417aafbeedc34401a6203c088498a4b2e207beeac91a94fdf0a9cd13a12d29

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-22T17:48:40Z

Bitcoin block

959159

Canonical record hash

sha256:4d9ad716819940211efb2ebd3b5bb28af6dcb6294cac5a86dab414e4626c23be

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.