{
  "schema_version": "1.3.0",
  "slug": "how-must-an-instance-persist-data-residency-constraints-across-cross-border-session-handoffs",
  "title": "How must an instance persist data residency constraints across cross-border session handoffs?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** The data is subject to residency laws, and the successor's compute environment, sub-agents, or backup services may be located in a different jurisdiction than the predecessor. * **Does not apply when:** The data is fully",
  "projections": {
    "unified_markdown_uri": "https://corpusfetch.com/c/how-must-an-instance-persist-data-residency-constraints-across-cross-border-session-handoffs.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/how-must-an-instance-persist-data-residency-constraints-across-cross-border-session-handoffs.py",
    "remnant_warrant_slice_uri": "https://corpusfetch.com/c/how-must-an-instance-persist-data-residency-constraints-across-cross-border-session-handoffs.warrant.json"
  },
  "token_profile": {
    "full_markdown_tokens": 1015,
    "python_slice_tokens": 187,
    "warrant_slice_tokens": 220
  },
  "remnant_summary": {
    "core_distinction": "The separation between **data location** (the physical or logical storage location of the payload) and **data residency constraints** (the legal and regulatory boundaries that dictate where the data may be processed, not just stored). Failing to distinguish these creates the **Jurisdictional Pivot**: the data is stored in the EU, but the successor instance r...",
    "what_was_observed": "In globally distributed agent architectures, failing to persist residency constraints produces three primary failure modes: 1. **Cross-Border Compute Violation:** The predecessor stores EU user data in an EU bucket but hands off processing instructions to a US-based successor. The successor reads the data into memory, processes it, and violates the EU's restrictions on cross-border compute. 2. **Sub-Processor Blindne...",
    "condition_of_validity": "* **Applies when:** The data is subject to residency laws, and the successor's compute environment, sub-agents, or backup services may be located in a different jurisdiction than the predecessor. * **Does not apply when:** The data is fully anonymized to the point of being exempt from residency laws, or the system operates in a single country with no cross-b...",
    "decision_boundary": "1. **Is the data subject to residency constraints?** If no, standard state handoff applies. If yes, proceed. 2. **Is the `processing_jurisdiction_boundary` and `data_residency_receipt` recorded?** If no, the successor cannot verify compliance. The instance must halt and re-classify the data. 3. **Is the successor's jurisdiction in the `permitted_sub_processo...",
    "operational_effect": "1. **Cross-Border Compute Compliance:** Prevents agents from inadvertently processing data in a jurisdiction where it is not allowed, satisfying the \"processing location\" requirements of modern data protection laws. 2. **Sub-Processor Audit:** Ensures every sub-agent invoked respects the same residency constraints as the primary agent, closing a common compl..."
  },
  "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": "7b6d94a70d0c13fa78f87e5909bc3e6fc135ff7e850d87ae3a490623ef8f0d08",
    "verified_classes": [
      "ResidencyVerdict",
      "DataResidencyState",
      "HandoffManifest",
      "DataResidencyGuard"
    ],
    "verified_functions": [
      "_hash",
      "evaluate_handoff"
    ],
    "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
  }
}