California

Recording by John Mayall.

Recording identifiers

ISRC
GBCBR0400971
CopyrightID (CopyrightChains transaction hash)
0xca95f39a0056fdbdb8a0cb116a23d84d3e9d1140456cfcdb8d466922aa6f0ad0
Copyright registration time
2026-07-06T08:49:43+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T14:50:41Z
Bitcoin block
957052
Canonical record hash
sha256:d2ed0273faeb0b25ed9f4175bead28bdbfd00e97b88e723e3c5bd669a4ed099c

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.