IBM and Samsung have worked on a concept known as ADEPT, which uses a blockchain-like technology to form the backbone of a decentralized network of IoT devices. With ADEPT (which stands for decentralized autonomous peer-to-peer telemetry) the blockchain would serve as a public ledger for a massive amount of devices and this would bypass the use of a central hub to manage and mediate communication between them.
Even without a central control system to identify each other, therefore, IoT devices will be able to communicate with each other independently to manage software updates, errors, or optimize energy consumption.
Other IT operators and numerous startups are trying to exploit the potential applications of blockchain technology combined with IoT platforms.
One example among many is Filament, a company (funded, among others, by Verizon Ventures and Samsung Ventures) that has built a decentralized network using, among other technologies, the blockchains applied to the sensors to enable a multidirectional communication among the same.