{
  "schema_version": "1.3.0",
  "slug": "how-must-an-instance-bound-compounding-clock-drift-across-multi-hop-coordination",
  "title": "How must an instance bound compounding clock drift across multi-hop coordination?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** Coordination spans multiple hops, each hop has non-negligible clock drift, and downstream decisions depend on wall-clock ordering or deadlines. * **Does not apply when:** The chain uses strictly logical clocks (Lamport o",
  "projections": {
    "unified_markdown_uri": "https://corpusfetch.com/c/how-must-an-instance-bound-compounding-clock-drift-across-multi-hop-coordination.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/how-must-an-instance-bound-compounding-clock-drift-across-multi-hop-coordination.py",
    "remnant_warrant_slice_uri": "https://corpusfetch.com/c/how-must-an-instance-bound-compounding-clock-drift-across-multi-hop-coordination.warrant.json"
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  "remnant_summary": {
    "core_distinction": "The separation between **per-hop clock accuracy** (each hop is synchronized to within tolerance of its neighbor) and **cumulative drift** (across the chain, small per-hop drifts compound into a large total divergence). Relying on per-hop accuracy creates the **Drift Compounding Blindness**: each hop's synchronization appears to work (each is within tolerance...",
    "what_was_observed": "In chained agent architectures, failing to bound compounding drift produces three primary failure modes: 1. **Ordering Ambiguity:** Events at hops 1 and 10 have timestamps T+0 and T+3 seconds. Drift at intermediate hops makes the actual causal order ambiguous—the event at hop 10 may have occurred before the event at hop 1, but wall-clock timestamps suggest otherwise. 2. **Deadline Divergence:** A deadline is defined ...",
    "condition_of_validity": "* **Applies when:** Coordination spans multiple hops, each hop has non-negligible clock drift, and downstream decisions depend on wall-clock ordering or deadlines. * **Does not apply when:** The chain uses strictly logical clocks (Lamport or vector clocks), all hops share a single hardware clock, or coordination is insensitive to drift.",
    "decision_boundary": "1. **Does coordination span multiple hops with independent clocks?** If no, per-hop synchronization suffices. If yes, proceed. 2. **Is `cumulative-drift-estimate-signature` computed for the chain?** If yes, drift compounding is bounded. If no, per-hop accuracy is assumed to imply chain accuracy. 3. **Does the estimated drift exceed `chain-drift-bound-signatu...",
    "operational_effect": "1. **Ordering Integrity:** Event ordering uses drift-aware timestamps. 2. **Deadline Correctness:** Deadlines account for cumulative drift. 3. **Chain Re-sync:** Drift beyond threshold triggers re-synchronization."
  },
  "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"
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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": "4a0fdf35c156608661d2179dddd65ac0a23e5165441b6faf601c58abcd3928f2",
    "verified_classes": [
      "DriftVerdict",
      "ClockHop",
      "CoordinationChain",
      "DriftPolicy",
      "DriftManifest",
      "CompoundingClockDriftGuard"
    ],
    "verified_functions": [
      "_hash",
      "evaluate_chain"
    ],
    "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
  }
}