Pillar 06 • Cryptographic ForensicsProof of Execution & CDC Replay

Cryptographic Audit & Time-Travel Forensics

Eliminate disputed AI actions. Every agent query and MCP tool invocation produces a tamper-proof cryptographic receipt linking prompt context, agent identity, and dataset config. Replay exact database state microsecond-by-microsecond for incident investigations.

Time-Travel Data Replay Simulator (Incident Forensics)

Reconstruct the exact state of the database at the microsecond the agent made its decision.

Offset: T+0ms (Execution) (11:02:14.000)

T-120ms

T-40ms

T+0ms (Execution)

T+35ms

Reconstructed DB State:

customer_id: 'CUST-90142' | score: 0.94 | model: 'xgb-v2.4'

Event: Agent issued candidate write assertion

Meynos Runtime Enforcement:

Asserted type bounds & row count <= 10 in Neon sandbox

Cryptographic Receipt Chained

aud-9901COMMITTED_SERVING

ChurnPredictionAgent (Claude 3.5 Sonnet)

Dataset: ds_customer_credit_risk (v1.2.0)•Latency: 14.2ms

Hash: 0x8f2a49b91c0e3a47814b67fa9c80d19

aud-9902INTERCEPTED_STEP_GATE

CreditRiskAgent (GPT-4o)

Dataset: ds_customer_credit_risk (v1.2.0)•Latency: 2.1ms

Hash: 0x3e7b89a012c4f5d68819ab23cf09a41

aud-9903COMMITTED_SERVING

SentrySOCInvestigator (Llama 3.3 70B)

Dataset: ds_sentry_threat_intel (v2.1.0)•Latency: 8.4ms

Hash: 0x1a9c45b8823d401eef98762100cb924

Signed Audit Receipt

{
  "receipt_id": "rcpt_0x8f2a9910c",
  "timestamp": "2026-09-10 11:02:14.035",
  "binding": {
    "agent_identity": "ChurnPredictionAgent (Claude 3.5 Sonnet)",
    "caller_arn": "arn:aws:iam::123456789:role/AgentRole",
    "dataset_config": "ds_customer_credit_risk (v1.2.0)",
    "prompt_sha256": "sha256:0x77b819a...102a"
  },
  "governance_contract": {
    "action_executed": "AssertTransientWrite & Promote",
    "masking_enforced": ["ssn -> REDACTED","credit_card -> TOKEN_MASKED"],
    "status": "COMMITTED_SERVING"
  },
  "cryptographic_proof": {
    "signature_algorithm": "ECDSA_P256_SHA256",
    "merkle_root": "0x8f2a49b91c0e3a47814b67fa9c80d19",
    "non_repudiation": "VALID_IMMUTABLE"
  }
}

Compliance Standards:SOC 2 / CPS 234 / NIST

Receipt verifiable via standard OpenSSL / WebCrypto SHA-256 validation.