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Last-mile cold-chain vaccine delivery proof
ColdChain LabsNairobi · Kibera clinicPosted
A shipment is only paid out when it physically arrives - and stayed cold. The hunter (courier) submits a proof at the clinic coordinate that fuses the device temperature sensor log with the GPS lock and arrival slot. If the cold-chain log shows an excursion or the geofence fails, the verifier program rejects automatically and funds stay escrowed.
cold-chainhealthcaresensor-fusion
Verification criteria
A proof settles only if it satisfies every condition below. The verifier program enforces them without exception.
Geofence
-1.31330, 36.78330
within ±12m
Capture window
Jun 11 → Jun 13
bound to slot range
Action type
Sensor capture
device: secure-enclave
Proof target
30 distinct proofs
2 verified so far
Required attestations
Secure Enclave
GPS Lock
Sensor Fusion
Slot Binding