One particular startup that’s currently working towards bringing blockchain to the IoT is Streamr - the live marketplace for data sharing. It is a decentralized off-chain platform that is connected to the Ethereum blockchain with smart contracts to ensure maximum security and safety.
Streamr.com
The platform allows users to sell their excess data to companies and other individuals who need it, and in turn allows them to buy excess data from other parties if they need it themselves.
For example, say you’re driving a car in rush hour. If your car is low on petrol, you can use other peoples’ data to find out where the nearest fuel station is, and which station has the lowest prices. In return for their services, you will pay them a small amount of DATAcoin tokens - the transferable currency within the Streamr platform.
Alternatively, someone sitting at home may want to know what the traffic is like in the area you’re driving through. So while you’re sitting tapping your fingers on the steering wheel in a traffic jam, your car can send the other users the data they need. In return, you will receive DATAcoin tokens from the user as payment.
This tokenization of data will enable a completely new way for both machines and people to trade data on a peer-to-peer decentralized network - and it’s all tied together in a simple interface within the application.
In fact, the DATAcoin token (DATA) has recently been listed on Bitfinex - one of the world’s largest cryptocurrency exchanges, making it freely transferrable.
https://coinidol.com/how-the-blockchain-is-about-to-revolutionize-iot/