O Lamm Gottes unschuldig, BWV Deest (Arr. For Piano Four Hands by György Kurtág)

Recording identifiers

ISRC

NLK4J1900009

Release date of the album this recording appears on

2019-09-27

CopyrightID (CopyrightChains transaction hash)

0x4b3ea40a7a1a97eb8408f308ef8c7e2a7df3eb10a73289901dfca85f30241895

Copyright registration time

2026-06-18T03:07:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:6938b9ba01b3b35667ce0875674739b8638ea836ea7750ab04c2fef8cce4c422

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Download the anchored registration record (its SHA-256 is the canonical record hash above)
• Recording evidence summary for ISRC NLK4J1900009

What this proof establishes

This recording was released in 2019, 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.