Same protocol as IBM's Adapt project. they both use Telehash.
But it seems Tilecoin will complete that protocol earlier than IBM's project!!!


Telehash: It’s one thing for devices to use block chain to understand contracts and capabilities, but they also need to communicate it, which is why Adept is using Telehash, a private messaging protocol that was built using JSON to share distributed information. It’s creator Jeremie Miller says at its simplest telehash is a “very simple and secure end-to-end encryption library that any application can build on, with the whole point being that an “end” can be a device, browser, or mobile app.” He added, “Perhaps, you can think of it as a combination of SSL+PGP that is designed for devices and apps to connect with each other and create a secure private mesh?” A new version of the software is expected soon.
http://telehash.org/

https://gigaom.com/2014/09/09/check-out-ibms-proposal-for-an-internet-of-things-architecture-using-bitcoins-block-chain-tech/