Abstract: A system includes a first plurality of blockchain nodes including first network nodes external to a vehicle and second network nodes internal to the vehicle, the first plurality of blockchain nodes maintaining a first distributed blockchain ledger; and a first computing device. The first computing device is programmed to transmit a first request to the first plurality of blockchain nodes requesting access to a vehicle network via a communications access port in the vehicle; demonstrate a first proof of work by responding to a second request from the first plurality of blockchain nodes; and receive, based on a first majority of the first network nodes and the second network nodes in the first plurality of blockchain nodes accepting the first request, first authorization specifying access to the vehicle access via the communications access port.

Abstract: A system includes a computer including a processor and a memory. The memory stores instructions executable by the processor to store an electronic ledger that specifies an authorized operation for an entity to perform for a vehicle, receive a request, including an entity identifier for an entity making the request, to perform a requested operation, query the electronic ledger to determine that the requested operation is the authorized operation, and actuate the vehicle based on the authorized operation. The electronic ledger is a distributed electronic ledger shared between at least the vehicle and the entity.

Abstract: A system includes a computer including a processor and a memory. The memory stores instructions executable by the processor to store an electronic ledger that specifies an authorized operation for an entity to perform for a vehicle, receive a request, including an entity identifier for an entity making the request, to perform a requested operation, query the electronic ledger to determine that the requested operation is the authorized operation, and actuate the vehicle based on the authorized operation. The electronic ledger is a distributed electronic ledger shared between at least the vehicle and the entity.

Abstract: A system includes a first plurality of blockchain nodes including first network nodes external to a vehicle and second network nodes internal to the vehicle, the first plurality of blockchain nodes maintaining a first distributed blockchain ledger; and a first computing device. The first computing device is programmed to transmit a first request to the first plurality of blockchain nodes requesting access to a vehicle network via a communications access port in the vehicle; demonstrate a first proof of work by responding to a second request from the first plurality of blockchain nodes; and receive, based on a first majority of the first network nodes and the second network nodes in the first plurality of blockchain nodes accepting the first request, first authorization specifying access to the vehicle access via the communications access port.