The new trust primitive
for human identity
has arrived.
Stop sybils. Verify real humans instantly with voice.
Introducing PoH: Proof-of-Humanness
Designed for apps, wallets, and systems that need to know who's real without friction, surveillance, or documents.
Private, fast, deployable anywhere.
VOICE INPUT
LIVENESS GATE
OLD METHODS
Why voice?
The fastest, least-spoofable human signal. One second of audio → one Proof-of-Humanness.
It is the purest and safest form of biometrics: biometric signal without biometric identity.
If you can't tell who's human, you can't protect your app.
AI bots are evolving faster than your CAPTCHA or SMS can keep up. Voice is the only live identity signal strong enough to stop them.
VOICE
STAMP
All eliminated with one API call
Reliable, scalable human verification is no longer optional and no longer difficult.
How it works
Human verification in seconds.
A single-use, fast-expiring challenge.
Authenticate in real time with phrase match, speaker match, and AASIST anti-spoof.
Attest on-chain to Solana, and mirror to EVM on request.
Proof that travels.
Your app, their system, a public ledger in the middle. Everyone reads the same receipt.
Production-ready in an afternoon
Simple REST API — POST JSON, get JSON. No SDK required.
Mobile-native formats supported worldwide
Transparent usage-based pricing (automatic graduated)
Start verifying with a single HTTP call.
Drop this into your backend or scripts to get your first Proof-of-Humanness response.
curl -X POST "https://api.keywave.io/v1/verify" \
-H "Authorization: Bearer YOUR_KEYWAVE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"client_id": "your-client-id",
"voice_sample_url": "https://your-bucket.com/sample.wav",
"mode": "verify",
"wallet_address": "So1anaOrEvmAddressHere"
}'