specProtocol v1 — human_origin

The BEACAN Protocol.

BEACAN issues unpredictable challenges, measures biological responses across multiple physiological dimensions, and produces cryptographic certificates of human origin. Designed to coexist with legitimate AI through voluntary disclosure. Designed to make impersonation provably hard.

Open-source validator

Patent-pending

signal source

00 / how_it_works

Three steps. Every verification.

Step 01 / CHALLENGE

Generate the nonsense.

A semantically dissociated phrase is issued. No prediction model has seen it, because no model predicts it. The phrase is unique per session.

POST /v1/challenge
{
  "complexity": 3
}

Step 02 / VERIFY

Score the response.

The spoken reply is analyzed across multiple independent biological dimensions. Each produces a score.

POST /v1/verify
{
  "session_id": "...",
  "audio": "wav"
}

Step 03 / CERTIFY

Issue the certificate.

A JWS-signed payload binds the outcome to a timestamp and content hash. Independently verifiable — forever. Compatible with C2PA content credentials for embedded provenance in audio and video files.

RS256 · RFC 7515
cert.confidence → 0.978

01 / accuracy

Honest numbers from real evaluation.

Validated on 4,459 samples across 10 speakers. Methodology: leave-one-speaker-out cross-validation.

96.4%

Accuracy on held-out unseen speaker

including their voice clones

99.2%

TTS rejection rate

98.6%

Voice clone rejection rate

More dimensions to come. Significant headroom remains.

02 / scope

What BEACAN does not do.

✕Detect AI by pattern-matching synthetic artifacts.

We verify humans by measuring biological signals AI cannot produce. Pattern-matching detection is a losing arms race; biological verification is not.

03 / api

API reference.

Request a verification challenge

POST /v1/challenge HTTP/1.1
Authorization: Bearer <api_key>
Content-Type: application/json

{
  "complexity": 3,
  "locale": "en-US",
  "tier": 1
}

→ 200 OK
{
  "session_id": "sess_01JT8XK9M4",
  "phrase": "seventeen tired staplers divide tuesday",
  "expires_at": "2026-05-03T14:32:00Z"
}

$ beacan join_waitlist

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