Blockchain transactions are decentralized, so they don’t require a bank payment or processor. The network of blockchain validates transactions and secures the network. It runs the blockchain protocol’s software and communicates with each other.
The more nodes there are more it is decentralized. Its primary role of its are broadcasting and validating transactions.
After the nodes validate new transactions, they are grouped into blocks. Each new block is added to the blockchain by the mechanism based on selected nodes called full nodes.
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