• Sensor trust and TEE availability are imperfect [6]

• ZK-PoPW is still early; research directions include:

  • Proofs of trajectory adherence

  • Content authenticity without raw media exposure [8]

• Standardization of schemas and verifier APIs is needed for multi-vendor fleets

Future work:

• Probabilistic coverage proofs

• Differential privacy for telemetry

• Multi-region compliance modules

• Formal verification of settlement contracts