Datum

 Datum is building the stock market for user & device data.  Supported by a blockchain ledger, Datum is commonly known as a  decentralized data store that collects secure, anonymous, and private  structured data. Data is often referred to as the new oil; as a result,  Datum recognizes the need to convert data into exchangeable commodities.  Some examples of information that users can store on the Datum network  include structured data from social networks, smart home, wearables, and  other internet of things devices. Datum offers its users a secure  platform where they can share or sell their information to select  entities anonymously. 

 The process of buying and selling data through the marketplace is quite  simple. After the user submits his data, the information is then  concealed according to the usage terms set forth by Datum. The second  step in the process is that the storage node miners save the data. These  storage nodes will eventually be rewarded DAT tokens. When a buyer  purchases data with DAT tokens, the information is then released to the  customer as soon as the smart contract initiates the off-chain key  exchange. The buyer acquisition process is complete when the DAT tokens  are paid to the data owner. The success of this secure exchange of data  is the direct result of the Datum's network reliance on the DAT token  smart contract. 

 Website : https://datum.org/
Whitepaper : https://datum.network/assets/Datum-WhitePaper.pdf