Nigra sum - Motets for 5-8 Voices: Book 4 for 5 Voices, "Canticis canticorum": No. 3. Nigra sum, sed formosa: Antiphon: Nigra sum - Nigra sum, sed formosa

Recording identifiers

ISRC

USB8U1035739

Release date of the album this recording appears on

2013-08-27

CopyrightID (CopyrightChains transaction hash)

0x526a00c62aa0974946013981b62db8101b8e888c9894cedc61874b949e2a81a8

Copyright registration time

2026-07-30T23:00:00+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T00:26:26Z

Bitcoin block

960327

Canonical record hash

sha256:5d884f7ab6a63c665c7b0c4bf811d9e0d7db4055d4ba108cd04c0de7f309bb39

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USB8U1035739

What this proof establishes

This recording was released in 2013, 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.