Mass for five voices: I. Kyrie eleison

Recording by William Byrd.

Recording identifiers

ISRC
GBNTD1510203
CopyrightID (CopyrightChains transaction hash)
0x5759b58aad160302c7a1cea5070b9a03c4e18b2a22708df87802b8b8cdbbc5a2
Copyright registration time
2026-07-30T13:41:56+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T14:36:16Z
Bitcoin block
960264
Canonical record hash
sha256:fb3521955715047f0284f57df19ee33e022d149510d87f1f27c833388bb6f322

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.