Y Web YID

Interactive Verification Suite

Progressive LoA & Human Uniqueness Demo

Test how Web YID proves that a real, unique human is present without central biometric custody. Move your pointer and type to accrue passive evidence, or trigger the step-up ceremonies below.

1. Action Under Test

2. Step-Up Verification Ceremonies

Earned Assurance
—
Required Assurance
—
Step Up Target
None
Trust Metric
—

Confidence Meter

LoA — / 4

Accruing passively
  1. LoA 4 Sovereign Enclave Anchor once · ≤15 s ~90% of offered
  2. LoA 3 Passive Biometrics 2.2 s · 1 permission 87%
  3. LoA 2 Hardware Passkey 1 click · <400 ms 93%
  4. LoA 1 Behavioural Humanhood 0 clicks · passive 98.5%
  5. LoA 0 Passive Ambient 0 ms · 0 clicks 100%

Value precedes the ask. No camera before value accrues — and the face is asked for once, ever.

Zeroization probe

Biometrics destroyed in local RAM. Zero data leaves your device.

Probe reported
yes
Non-zero bytes
0
Retention
none (no template, no frame)

Cryptographic Anti-Sybil Architecture

How Human Uniqueness Is Proven Without Facial Storage

How do we know a human is unique across 750,000+ accounts without keeping a database of face photos? Web YID uses Oblivious Pseudo-Random Functions (OPRF) to derive deterministic, unlinkable nullifiers.

1

OPRF Sybil Nullifier

The AdaFace 512-D embedding is passed through an Oblivious PRF protocol evaluated with Subnet 54: N = OPRF(K_subnet, bio_features). The same human face always generates the exact same nullifier, allowing instant O(1) duplicate detection without ever saving face images.

2

Human-Time Economics

Sybil cost scales with human presence: C_sybil = Θ(s). Bot farms cannot parallelize 15-frame temporal liveness and neuromuscular Fitts's law kinematics. Faking 10,000 identities requires 10,000 real human sessions.

3

Cross-RP Unlinkability

Per Invariant P4, nullifiers are salted by Relying Party ID. Your identity on dFusion AI cannot be correlated or linked to your identity on other apps. Privacy is a mathematical property, not a policy promise.

Interactive Uniqueness & Sybil Test Console