Perfidia

Recording by Dave Brubeck.

Recording identifiers

ISRC
GBHQC0587753
CopyrightID (CopyrightChains transaction hash)
0xb44260aa5d9652e35f0d4ed33d3b7f7c01ca72532f20bfa4a4b8bec6ecb239d4
Copyright registration time
2026-07-07T02:25:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:eb7546580a4d5ea547e5d43e19a7e6c6a5a1771da79b8ca2e835751c43c925c5

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.