Figure 7 .8 : Block structure

Data and transactions executed over the network are stored in the ledger in a

decentralized manner over a peer-to-peer network. Transactions are validated

and verified through consensus (consensus protocols) across nodes of the

blockchain network. Figure 7.9 shows the online transaction flow in a

blockchain network where:

1. The client initiates the transaction

2. Peer-to-peer network

3 . Validation

4. Stakeholder verifies the transaction details

5 . Verification and adding to the ledger.