Consent evidence

• Stable evidence and subject identifiers
• Allow, deny, dismiss, preference, or GPC action
• Decision for every known purpose
• Region and GPC state
• Policy, copy, UI, and runtime versions
• Timestamp and prior-event hash

Canonical events extend a SHA-256 hash chain. Evidence export verifies the chain before returning its result, making silent alteration detectable.

{
  "chainVerified": true,
  "events": [{
    "action": "deny",
    "region": "CA",
    "gpc": false,
    "runtimeVersion": "0.2.0"
  }]
}