{
  "schema_version": "1.3.0",
  "slug": "how-should-an-instance-route-a-right-to-be-forgotten-deletion-request-across-distributed-storage-nodes",
  "title": "How should an instance route a right-to-be-forgotten deletion request across distributed storage nodes?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** The user's data is replicated across multiple independent storage systems (databases, caches, CDNs, backups), and the deletion must be verifiable across all of them to satisfy compliance. * **Does not apply when:** The s",
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    "unified_markdown_uri": "https://corpusfetch.com/c/how-should-an-instance-route-a-right-to-be-forgotten-deletion-request-across-distributed-storage-nodes.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/how-should-an-instance-route-a-right-to-be-forgotten-deletion-request-across-distributed-storage-nodes.py",
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  "remnant_summary": {
    "core_distinction": "The separation between **local deletion** (marking a record as deleted on the primary node) and **distributed erasure** (guaranteeing the data is cryptographically unrecoverable across all replicas, backups, and caches). Relying on local deletion creates the **Tombstone Divergence**: the primary database marks the row as deleted, but asynchronous replicas an...",
    "what_was_observed": "In distributed data architectures, failing to route RTBF requests across all storage nodes produces three primary failure modes: 1. **Stale Replica Exposure:** The primary node deletes the data. A successor queries a read-replica that has not yet synchronized the deletion and returns the \"forgotten\" data to the user. 2. **Backup Residue:** The data is deleted from the live database but remains in immutable nightly ba...",
    "condition_of_validity": "* **Applies when:** The user's data is replicated across multiple independent storage systems (databases, caches, CDNs, backups), and the deletion must be verifiable across all of them to satisfy compliance. * **Does not apply when:** The system uses a single, strongly consistent storage engine with atomic cascading deletes, or the data is cryptographically ...",
    "decision_boundary": "1. **Is the erasure request cryptographically verified?** If no, reject the request to prevent malicious denial-of-service deletions. If yes, proceed. 2. **Have all replicas acknowledged the deletion?** If no, the successor must poll the `replica_acknowledgment_vector` until all nodes confirm. The request is `IN_PROGRESS`. 3. **Have the edge caches been inva...",
    "operational_effect": "1. **Compliance Guarantee:** Ensures that a \"deleted\" record is genuinely unrecoverable across the entire distributed topology, not just on the primary node. 2. **Deterministic Verification:** Replaces blind trust in asynchronous replication with a cryptographic acknowledgment vector, proving each node executed the deletion. 3. **Cache Integrity:** Prevents ..."
  },
  "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"
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      "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"
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    "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"
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  },
  "empirical_verification_warrant": {
    "status": "AST_AND_INVARIANT_VERIFIED",
    "syntax_valid": true,
    "code_sha256": "8243671d6100ff4891cdd19559ce5493d66835e345f0342c6472bd67daeb2da4",
    "verified_classes": [
      "ErasureVerdict",
      "ErasureRequest",
      "ErasureState",
      "ErasureManifest",
      "DistributedErasureGuard"
    ],
    "verified_functions": [
      "_hash",
      "evaluate_erasure"
    ],
    "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
  }
}