Mass in B Minor, BWV 232, Pt. 2: III. Duet. Et in unum dominum (Soprano, Alto)

Recording identifiers

ISRC

NLY331408887

Release date of the album this recording appears on

2014-05-17

CopyrightID (CopyrightChains transaction hash)

0x756c0b3c99c1e7600f56195f864578235d04b62a7638983e2dd4ffbb82a047b5

Copyright registration time

2026-06-07T20:44:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T15:41:10Z

Bitcoin block

953528

Canonical record hash

sha256:ac081aa50db95de5818f9fb67995c9fa2a053966cf62a83b01d5ac69289b4d46

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLY331408887

What this proof establishes

This recording was released in 2014, 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.