In one embodiment, an apparatus comprises a communication interface, a memory, and a processor. The communication interface is to communicate with one or more devices. The memory to store a device identity blockchain. The processor is to: receive a device identity transaction from a first device, wherein the device identity transaction comprises a device identity; compute a hash of the device identity; determine, based on the hash, whether the device identity is registered in the device identity blockchain; and upon a determination that the device identity is not registered in the device identity blockchain, add the device identity transaction to the device identity blockchain.