Mass for 5 Voices: I. Kyrie

Recording by William Byrd.

Recording identifiers

ISRC
BER181301405
CopyrightID (CopyrightChains transaction hash)
0xe313d5ef46075ef0353a13007f6a30549659ddc73482d07aa5cc2c1586fa8344
Copyright registration time
2026-07-06T20:34:51+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:d189417a1fdda2224b60308b31c05b8767a2e013f5c5ed1e48b1c9b07a04d5f6

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.