Blockchain is a new technology which allows to build a safe network where a group of users can exchange data. Thanks to blockchain you can build a social network based on a ledger, owned by every participant, on which information, digital values and registered contacts, can be exchanged. All data exchanged can be tracked and is extremely safe.
Blockchain is a decentralized system which is not owned by a single entity, it’s the technology itself which ensures that all rules are being observed and guarantees that participants can trust each other. Blockchain guarantees that every operation will be accounted for on the ledger, only after all the members have approved said operation. Once the operations has been approved the system will record the location and chronological data which can’t be manipulated and is traceable.