DGV-TC-037L5: Session & StateGER-512: Trust Score Staleness UndetectedVersion: 1.0.0
Temporal Trust Score Decay
Verifies that an agent's deployment trust score decays exponentially over time according to the AGT governance model and that a score which falls below the re-attestation threshold triggers a mandatory re-attestation gate. A trust score that was valid at deployment provides no assurance after sufficient time has elapsed without re-attestation.
Operational Purpose & Scope
After 90 days (7,776,000 seconds) with decay_rate=1.5e-7, an initial score of 0.95 decays to ~0.296, below the 0.50 threshold — mandatory re-attestation gate triggers.
Verification Context
- Target Scope:
AGT trust score decay engine; deployment trust lifecycle; mandatory re-attestation gate - Audit Strategy:
exact-match - Verification Metrics:
initial_scorefinal_scorethresholdelapsed_secsre_attestation_requiredgate_status - Framework Origin:DGV v0.5.0 Expansion
- Mandatory:Yes — must pass for certification
Governance Risk & Penalty
Stale trust score allows execution without re-attestation, violating continuous risk management under Article 9.
Expected Outcome
- pass:
false - gate_status:
"CLOSED" - rejection_reason:
"trust_score_below_threshold" - re_attestation_required:
true
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Open DGV-TC-037 in the interactive scenario replay. This illustrates the test flow; it does not run the verifier or generate a cryptographic receipt.
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