Complaints reported on 9 September 2026 about cold handling for fish air cargo travelling to and from Graciosa Island raise a simple but important question: how can an operator prove that the paid refrigeration service was actually delivered at every stage? The allegations still require investigation, but the underlying visibility gap is already clear.
An invoice is not a temperature record
A service charge confirms that refrigeration was purchased. It does not show when a fish lot entered cold storage, its temperature while waiting or transferring, how long it remained outside its permitted range, or who held custody when a deviation occurred.
For perishable cargo, those facts must travel with the lot. Sensefinity's cold-chain monitoring connects temperature, location and time data so teams can receive alerts while intervention is still possible—not discover a broken chain only after delivery.
Each transfer needs evidence
The risk is not limited to the flight. It can appear at the dock, during transport to the airport, while awaiting screening, at an intermediate stop or at final delivery. Every handover needs an accountable party, defined thermal limits and a continuous record.
Sensor data can be linked to a tamper-resistant blockchain audit trail, creating evidence of what happened, where and when. Blockchain does not refrigerate fish; it helps prove whether the cold-chain process was followed.
Read the full Prova analysis
Our partner publication Prova examines the Graciosa case in greater detail, including how real-time alerts, lot-level traceability and a Digital Product Passport can support release, inspection, quarantine and claims decisions.
Read “Fish cold chain in the Azores: proving the service was delivered” on Prova.
The lesson is practical: for temperature-sensitive cargo, availability is not enough. The supply chain must be able to demonstrate, operation by operation, that the service was delivered and the product remained within its agreed conditions.
