California Gurls
Recording by Katy Perry.
Recording identifiers
- ISRC
- USCA21001135
- CopyrightID (CopyrightChains transaction hash)
- 0x7c8518994e0a263260199b6c8ea7c71bf935ac1a3357393d90345a1fc7260ccd
- Copyright registration time
- 2026-06-01T04:21:35+00:00
OpenTimestamps proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19Z
- Bitcoin block
- 957118
- Canonical record hash
- sha256:312678580eb51dce7ca0c4114ab94112d8b65752855db6bbb37f3da92f8d5829
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.