cd /news/ai-safety/show-hn-hupow-proof-of-work-to-stop-… · home topics ai-safety article
[ARTICLE · art-80145] src=hupow.app ↗ pub= topic=ai-safety verified=true sentiment=· neutral

Show HN: HuPow – Proof-of-Work to stop AI bots in your inbox

HuPow launches a Proof-of-Work messaging service to stop AI bots from flooding inboxes, using cryptographic hash verification instead of CAPTCHAs. The service costs $5 per month for unlimited verification links and instant email notifications.

read1 min views1 publishedJul 30, 2026

Proof-of-Work protected messaging AI outreach is flooding your inbox. HuPow uses cryptographic Proof-of-Work to verify human intelligence. Reply to real people.

Start 7-Day Free Trial No credit card required.

How HuPow works #

Verify, don't guess! HuPow is a Human proof of work solution.

Step 01

Generate a link

When an unknown contact reaches out, grab your unique HuPow link from your dashboard.

Step 02

Contact verifies

Their browser solves a cryptographic hash. No annoying CAPTCHAs required.

Step 03

Reply with confidence

You receive an instant notification. You now know it's a real human on the other side.

Simple Pricing #

Start free. Upgrade when you're ready.

Monthly

$5/mo

  • ✓ Unlimited verification links
  • ✓ Instant email notifications
  • ✓ Custom display name

Get Started

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