5arz vs CAPTCHA
CAPTCHAs filter bots. They can’t prove a person. 5arz signs that a real, ID-verified person did it.
A CAPTCHA tries to make bots fail. 5arz is positive proof: a verified person did this action, and it’s signed.
Keep your WAF and rate limits. Add 5arz where being wrong costs money.
How each one works
Side by side
| Feature | 5arz | CAPTCHA / risk scores |
|---|---|---|
| Model | Positive proof — a verified person attests the action | Negative filter — make bots fail |
| Output | A signed ES256 credential, checkable offline against a public key. On-chain mirror on Base Sepolia (testnet) | A pass/fail token or a risk score for your server |
| Proof others can check | Yes — reusable and auditable later | No — read once, by your backend |
| Where it fits | Moments that need certainty: sign-ups, payouts, reviews, agent requests | Perimeter noise reduction |
CAPTCHA facts come from the vendors’ own docs, cited on our reCAPTCHA, hCaptcha and Turnstile comparisons — see Sources 1–3.
Which one you need
- You want to make mass abuse costlier at the perimeter
- A likely-human signal is enough
- Nobody needs to check the result later
- A wrong answer costs money: sign-ups, payouts, reviews
- Someone else must check the proof later
- An AI agent acts for a real person
Or use both. Keep bot protection on every form. Add 5arz where you need certainty.
Reward the person, don’t test them
Our embed sits where a CAPTCHA would: sign-up, checkout, comment, download. The visitor spends ten seconds on real work instead of a puzzle.
One short question
A comparison, a rating or a confirmation. Real work, not a distorted word.
Only genuine completions count
A rushed or idle completion doesn’t qualify. We publish what a credential covers, never how we check.
A seal is issued — or it isn’t
If it qualifies, we sign an ES256 credential. If not, it’s logged and nothing is signed.
Your buyer checks it without us
Verification runs against our public key. No SDK, no call to 5arz.
<script src="https://api.5arz.com/embed.js" data-site="agt_your_site_id" async></script>
One tag. No SDK, no build step, nothing server-side to start. It mounts inside [data-5arz-task] if you have one, or floats bottom-right.
Questions
What does 5arz do differently from a CAPTCHA?
A CAPTCHA is a negative filter. 5arz is positive proof: an ID-verified, live person did an action, signed as an ES256 credential anyone can check against a public key.
Can 5arz work alongside my bot protection?
Yes. Keep your WAF and rate limits for abuse. Add 5arz where you need certainty: sign-ups, payouts, reviews and agent transactions.
Does the visitor earn anything?
Yes — Stars for each verified completion. Stars cash out from 23 Nov 2026, and tasks depend on demand, so earnings aren’t guaranteed.
What stops someone faking a completion?
Every completion is checked before anything is signed. One that doesn’t qualify is logged and no credential is issued.
How long does the embed take to install?
One script tag. No SDK, no build step and nothing server-side to start.
Sources
Comparison reflects public information as of July 2026. 2 patents pending (US provisional).
- 1reCAPTCHA sourcesGoogle’s docs, on our reCAPTCHA comparison
- 2hCaptcha sourceshCaptcha’s docs, on our hCaptcha comparison
- 3Turnstile sourcesCloudflare’s docs, on our Turnstile comparison
- 45arz public key5arz-oracle-2 · ES256
- 5Verify a sealCheck one in your browser
Product names are trademarks of their respective owners. 5arz is independent and is not affiliated with, sponsored by, or endorsed by any CAPTCHA provider. This page is informational and not legal advice.