The blockchain architecture includes multiple layers. The blockchain layered architecture is different for various decentralized applications. The layers of blockchain perform diverse roles in decentralized business applications. In general, the layered structure of blockchain technology includes the following layers.
Application Layer
Programmable currencies
Programmable finance
Contract Layer
Smart contracts
Java scripts
Incentive Layer
Insurance
Distribution
Consensus Layer
Proof of Work (PoW)
Proof of Stake (PoS)
Delegated Proof of Stake (DPoS)
Proof of Identity (PoI)
Proof of Capacity (PoC)
Proof of Authority (PoA)
Network Layer
Peer-to-Peer Communication
Verification
Data Layer
Data block
Structure of chain
Timestamp
Hash values
Merkle root
Asymmetric Encryption