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Recording by Johannes Ockeghem.

Recording identifiers

ISRC
US9Z81901002
CopyrightID (CopyrightChains transaction hash)
0x9ff7c21a5a5ee7e7c36c921d00ace21c94c9964639e363db4b43dc7447917d56
Copyright registration time
2026-07-07T07:43:38+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:4d05f30b139a6929b8bc17738fcff5b1bbbf4d8eb74948b934d712c557d979b1

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.