# ZKPC (Zero-Knowledge Proof of Personhood & Continuity) Status
**Current Readiness:** ~85% (Real Cryptographic Verification Operational)
**Date:** 2026-05-11

## Overview
arifOS has crossed from "Trust via Key Possession" to "Trust via Sovereign Human Continuity" to **"Trust via Real Cryptographic Proof."** The ZKPC v2 subsystem now performs genuine Groth16 verification via `snarkjs` — no simulation, no structural-only placeholder.

The architectural governance scaffolding remains fully embedded within the canonical 13-tool pipeline. The system formally distinguishes between possession (Level 0), continuity (Level 1), and personhood (Level 2).

## What is DONE (The 85%)

### 1. Real Cryptographic Verification ✅
- **`arifos/security/zkpc_v2.py`** calls `snarkjs groth16 verify` as the source of truth.
- **25/25 tests pass** covering real proof generation, real proof verification, fake proof rejection, tampered input rejection, and missing-data rejection.
- Honest claim enforced: `proves_full_personhood` is `False` — ZKPC v2 proves continuity of control, not full personhood.

### 2. Policy & Constitutional Architecture ✅
- `zkpc_policy_zero_state.json` defines trust levels, evidence classes (e.g., SNARK, VC 2.0), and HOLD triggers.
- `ZKPC_HARDENING_PLAN.md` maps the upgrade path for remaining tools.
- `docs/ZKPC_CONSTITUTIONAL_ANALYSIS.md` — canonical philosophical foundation.

### 3. Stage Gates Scaffolded ✅
- **000_INIT:** Session binding includes an explicit contract slot for `continuity_proof`, defaulting to `MISSING` if absent.
- **888_JUDGE:** Implements the `F1_AMANAH_ZKPC` adequacy gate. Irreversible actions trigger `888_HOLD` if `evidence_bundle` provides `zkpc_level < 2` or if continuity validity flags are false.
- **999_VAULT:** Vault removes all natural-language approval string hacks and demands strict structural validity and `zkpc_level >= 2`. Only metadata is stored; raw secrets are strictly forbidden.

### 4. Internal Architecture ✅
- `arifos/security/zkpc_v2.py` — internal helper for REAL Groth16 verification (Phase 2 complete).
- `zkpc/circuits/zkpc_v2_epoch.circom` — mathematical constraints for identity and epoch continuity.
- Artifact layout:
  - `verification_key.json` — verifying key (committed to repo, ~3.5KB)
  - `zkp_artifacts/circuit_final.zkey` — proving key (generated, gitignored)
  - `circuit_js/circuit.wasm` — compiled witness calculator

## What is PENDING (The 15%)

- **VC 2.0 Integration (111_SENSE):** Ingress pipelines cannot yet parse or resolve W3C VC 2.0 payloads.
- **Memory Lineage (555_MEM):** Retrieved context is not mathematically bound to an epoch-proven entity.
- **Federated Handshake (666_GATEWAY):** Agent-to-Agent (A2A) communication still relies on JWT/PKI rather than ZK-stewardship.
- **Liveness & Device Binding (ZKPC v3):** Proofs check identity and temporal continuity, but not hardware trust (TEE) or liveness limits.

## Test Results

```bash
cd /root/arifOS
python -m pytest tests/ -k "zkpc or zk or snark" -v --tb=short
# 25 passed, 1309 deselected
```

## Honest Claim

> ZKPC v2 proves continuity of control, not full personhood.
> Cryptography proves control and authorship. It does not replace human judgment.

DITEMPA BUKAN DIBERI — 999 SEAL ALIVE
