Mastering Blockchain Programming with Solidity

Trust in the network

As of today, we are using the existing TTP systems of bank servers or stock exchange trade servers. These are centralized and are continuously being attacked. If an attacker takes control of the database server of a trade server, it can make changes in the database and put in fake entries.

However, the immutability and irreversibility of transactions makes blockchain technology more trusted. It becomes very hard for an attacker to change any entries in the blockchain transactions. This makes blockchain more trusted in terms of maintaining pure immutability and irreversible transactions. You can trust the Ethereum public mainnet; however, you cannot trust testnet completely (this may change, but at the moment, testnet ...