I like Blockchain, Instant, Safe, Efficient and Transparent.

All transactions and data storage are guaranteed to be safe because they are replicated throughout the blockchain network so that to change one data, the hacker must also change the same data on all other user's computers at the same time. This is very impossible to do. With Blockchain, we no longer need to depend on one server because all transactions are replicated throughout the network so that we avoid various forms of fraud because of modified data, server down, or hacked accounts.