Mass for four voices, VI Agnus dei

Recording by William Byrd.

Recording identifiers

ISRC
FR0O70720170
CopyrightID (CopyrightChains transaction hash)
0xcd67224dc79ae901262b90e4193deb0457d8ac18d433daea1bc421abea620282
Copyright registration time
2026-07-30T14:44:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T14:53:07Z
Bitcoin block
960268
Canonical record hash
sha256:043303604be664e45a1c5f0476246ace681a01f245c454d2a758aa0e7a82ac91

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.