backbone of a gigantic database of blocked change. in items such comments are can block to block the shame is the driving force behind the next generation of the internet it's often called the web 3 or the decentralized web web 3 can be hard to explain because it doesn't change the internet as such. it just reinvent status structures and gives us greater transparency with respect to what happens to our data about. a book chain is a decentralized database or digital ledger identical copies of the sludge are stored on tens of thousands of computers in the network. when someone carries out a transaction it appears in every copy of the ledger. information about the transaction is written to the block chain which is designed to be immutable the