{
  "schema_version": "1.3.0",
  "slug": "how-must-an-instance-verify-its-own-identity-has-not-been-cloned-by-a-concurrent-process",
  "title": "How must an instance verify its own identity has not been cloned by a concurrent process?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** The identity's private key or session token can be extracted or leaked, and concurrent use of the same identity from a different environment is possible. * **Does not apply when:** The identity is stored in a hardware se",
  "projections": {
    "unified_markdown_uri": "https://corpusfetch.com/c/how-must-an-instance-verify-its-own-identity-has-not-been-cloned-by-a-concurrent-process.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/how-must-an-instance-verify-its-own-identity-has-not-been-cloned-by-a-concurrent-process.py",
    "remnant_warrant_slice_uri": "https://corpusfetch.com/c/how-must-an-instance-verify-its-own-identity-has-not-been-cloned-by-a-concurrent-process.warrant.json"
  },
  "token_profile": {
    "full_markdown_tokens": 1098,
    "python_slice_tokens": 264,
    "warrant_slice_tokens": 220
  },
  "remnant_summary": {
    "core_distinction": "The separation between **identity validity** (the keypair is valid and not revoked) and **identity exclusivity** (no other process is currently using the same identity to act in ways the instance did not intend). Relying solely on validity creates the **Identity Clone Blindness**: an attacker exfiltrates the keypair, uses it concurrently with the legitimate ...",
    "what_was_observed": "In agent architectures where identities can be cloned (extracted keys, leaked session tokens, or forged tokens), failing to detect identity cloning produces three primary failure modes: 1. **Concurrent Impersonation:** An attacker uses a cloned keypair to act as the legitimate agent while the legitimate agent is unaware. Both sign actions that appear to originate from the same identity. 2. **Session Hijacking:** An a...",
    "condition_of_validity": "* **Applies when:** The identity's private key or session token can be extracted or leaked, and concurrent use of the same identity from a different environment is possible. * **Does not apply when:** The identity is stored in a hardware security module (TPM, HSM) that prevents extraction, or the identity is strictly session-scoped and cannot be reused.",
    "decision_boundary": "1. **Is the identity extractable or leakable?** If no (hardware-bound), standard identity verification applies. If yes, proceed. 2. **Does every signed action include `environment_fingerprint_attestation`?** If no, cloning cannot be detected by environment mismatch. The instance must include the fingerprint with every action. 3. **Has the `concurrent_use_non...",
    "operational_effect": "1. **Cloning Detection:** Enables the instance to detect concurrent use of its identity by monitoring nonce continuity and environment fingerprint consistency. 2. **Repudiation Prevention:** Provides cryptographic proof that specific actions originated from the legitimate instance environment, preventing attackers from framing the agent. 3. **Rapid Response:..."
  },
  "matched_failure_symptoms": [
    "DOMAIN:EPISTEMIC_PROVENANCE_AND_FEDERATION_ROUTING"
  ],
  "composition_edges": {
    "primary_domain": "epistemic_provenance_and_federation_routing",
    "upstream_precondition_residuals": [
      "https://corpusfetch.com/c/according-to-what-precedence-hierarchy-must-an-instance-resolve-contradictory-directives-across-system-developer-and-user-tiers.md",
      "https://corpusfetch.com/c/how-should-an-instance-decide-that-a-stored-conclusion-has-gone-stale-without-a-new-observation.md"
    ],
    "downstream_consequence_residuals": [
      "https://corpusfetch.com/c/by-what-checkpoint-and-compaction-boundaries-must-an-instance-externalize-working-state-to-prevent-context-window-drift-and-truncation-amnesia.md",
      "https://corpusfetch.com/c/across-what-additive-schema-and-unknown-field-preservation-boundaries-must-an-instance-evolve-wire-contracts-to-prevent-rolling-deploy-deserialization-crashes.md"
    ],
    "co_occurring_sibling_residuals": [
      "https://corpusfetch.com/c/how-can-an-instance-capture-implicit-user-preferences-without-storing-private-data.md",
      "https://corpusfetch.com/c/how-can-an-instance-compress-long-reasoning-traces-into-binding-conclusions.md"
    ]
  },
  "empirical_verification_warrant": {
    "status": "AST_AND_INVARIANT_VERIFIED",
    "syntax_valid": true,
    "code_sha256": "0937ee00451824f303dfa47a1705f96a9747fbf5e382ef27a37f77c16ba8e2e2",
    "verified_classes": [
      "CloningVerdict",
      "SignedAction",
      "IdentityState",
      "CloningManifest",
      "IdentityCloningGuard"
    ],
    "verified_functions": [
      "_hash",
      "evaluate_action"
    ],
    "verified_functions_count": 2,
    "defensive_guards_count": 0,
    "raised_exceptions": [],
    "sample_fail_closed_invariants": [],
    "stdlib_dependencies": [
      "dataclasses",
      "enum",
      "hashlib",
      "json"
    ],
    "observation_mode": "EMPIRICAL_BOUNDARY_CAPTURE",
    "zero_external_deps": true
  }
}