Three layers. One mechanism.
Zero trust required.

Personality Vector™

The patent’s “unified mathematical personality vector” (claim 1). A schema-validated, hashable data object — not an opaque embedding. Every field is human-readable, individually testable, and grounded in published psychometrics.

Defined in packages/personality/aitc_personality/schema.py. The canonical SHA-256 of a PV is what the Authenticity Seal binds to.

PersonalityVector {
  meta: {
    creator_id, schema_version, created_at,
    source_signature,           # SHA-256 of source corpus
    builder_version, notes
  },
  values: [                     # Schwartz inventory
    { dimension: "self_direction", weight: 0.95, confidence: 0.85 },
    { dimension: "universalism",   weight: 0.92, confidence: 0.80 },
    ...
  ],
  cognitive_style: {
    system1_system2_ratio: 0.30, # Kahneman dual-process
    risk_tolerance: 0.55,
    decision_heuristics: ["analogical_reasoning", "first_principles"],
    hedging_frequency: 0.45,
    abstractness_index: 0.70,
    causal_reasoning_preference: "mechanistic"
  },
  linguistic_signature: {
    vocabulary_richness: 0.78,           # Honoré R normalized
    syntactic_complexity: 0.65,
    sentence_length: { mean: 16.5, median: 14.0, p90: 32.0 },
    formality_index: 0.62,               # Heylighen-Dewaele
    characteristic_phrases: [
      "in my experience", "small honest step",
      "ask the question once more", ...
    ],
    address_forms: { granddaughter: "my dear", colleagues: "professor" }
  },
  humor_markers: {
    primary_styles: ["dry", "self_deprecating", "observational"],
    frequency: 0.35,
    avoided_topics: ["loss", "war", "her late husband"]
  },
  affective_baseline: {                  # null until biometric
    hrv_baseline_ms, valence_baseline, arousal_baseline, ...
  },
  relational_map: {
    relations: [
      { role: "granddaughter", address_form: "my dear",
        register_shift: "softer", affective_intensity: 0.95 },
      ...
    ]
  },
  episodic_memories_ref: "demo_capsules/will_carrington/episodic_memories.json",
  embedding: null | float16[1024]
}

Authenticity Seal™

Cryptographic provenance for every avatar response. The patent’s digital-inheritance mechanism (claims 1, 6) and the deepfake-defense moat the category will require under EU AI Act Article 50.

• Detects response tampering — change a single character of the answer and the response_hash no longer matches.
• Detects signature tampering — Ed25519 signature is rejected if any bit flips in the manifest.
• Detects PV drift — the manifest binds to the PV signature at the time of seal; later edits to the PV produce a different signature.
• Read-Only Lock — after the creator passes, the smart contract permanently locks the namespace; no further seals can be issued for that creator.

SealedManifest {
  manifest: {
    schema_version: "aitc-seal/0.1.0",
    capsule_creator_id: "will_carrington",
    pv_signature:        <SHA-256 of Personality Vector canonical JSON>,
    meta_prompt_hash:    <SHA-256 of meta-prompt sent to the foundation model>,
    response_hash:       <SHA-256 of the response text>,
    retrieved_memory_ids: ["em_009", "em_007", "em_001", "em_002", "em_011"],
    model_provider: "anthropic",
    model_id: "claude-opus-4-7",
    sealed_at: "2026-05-03T21:18:42Z",
    sealer_public_key: <base64 Ed25519 public key>
  },
  signature_b64: <Ed25519 signature over canonical(manifest)>,
  anchor: {                      # optional, on-chain
    chain: "polygon-amoy",
    contract_address: "0x...",
    tx_hash: "0x...",
    block_number: 12345678,
    anchored_at: "..."
  }
}

# Smart contract (Solidity, Polygon Amoy):
contract AuthenticitySeal {
  function anchor(bytes32 creatorId, bytes32 manifestHash) external;
  function lockCreator(bytes32 creatorId) external;  // Read-Only Lock
  function isAnchored(bytes32 manifestHash) external view returns (bool);
}