Messe de Nostre Dame: II. Kyrie

Recording by Guillaume de Machaut.

Recording identifiers

ISRC
FR50X0813202
CopyrightID (CopyrightChains transaction hash)
0x6af0c82cdac349728961b76fce431c8de2fabb57be8bd8c88a9a4091de6a6d1f
Copyright registration time
2026-07-06T07:34:02+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:d4888a45795cb3abce1f7c6d44370f71eb40ac91f587ef2fd36efb7e409cc51c

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.