Mass for 4 Voices: Mass for 4 Voices: Kyrie

Recording by William Byrd.

Recording identifiers

ISRC
USHM10022301
CopyrightID (CopyrightChains transaction hash)
0xcce6e10dd797959f0a9e15805e8d94c4dbefa2eee0cd01e6e7a25ada8fff29ee
Copyright registration time
2026-07-07T19:00:58+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:84e2cdd3c8059a14a006fa96694b25e19f877f027d5c865b963b9cf352db53f4

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.