Trio sonatas opus 2: Sonata in B flat op.2 nr.1 BuxWV 259

Recording identifiers

ISRC

NLK171100038

Release date of the album this recording appears on

2021-08-06

CopyrightID (CopyrightChains transaction hash)

0x8cfb2572c1b65d924b27910c82a0b6cf67cbe770c57a57368b00c059068eea0e

Copyright registration time

2026-07-07T12:28:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:79e986c8e0a6c8bb9f8e9d536957a22701c62098f76dbd4f005254b062df7a18

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC NLK171100038

What this proof establishes

This recording was released in 2021, 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.