HumanGate - live examples

Click a provider to generate a demo challenge (test mode) and open its
captcha page. After you pass it, you are redirected back with a
verification code - exactly what a user sees returning to a bot.

HumanGate-native (no keys required)
    text_image            server-rendered distorted text
    proof_of_work         SHA-256 leading-zero-bits
    browser_fingerprint   anti-headless heuristics

External (shown only if demo keys are configured)
    cloudflare_turnstile
    google_recaptcha_v2

A link returns an error if that provider has no demo config on this server.
Demo-enabled providers on this instance: /public/v1/demo

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