NumBlock Layering

The components of the NumBlock blockchain are implemented as modules, and these modules interact with each other. With this organization, the components can be easily upgraded and replaced without affecting the entire network.

P2PNetwork​

It all starts at the base networking layer, which utilizes libp2p. We decided to go with this technology because it fits into the designing philosophies of NumBlock. Libp2p is:

• Modular
• Extensible
• Fast

Most importantly, it provides a great foundation for more advanced features, which we’ll cover later on.

Consensus Engine​

The separation of the synchronization and consensus protocols allows for modularity and implementation of custom sync and consensus mechanisms – depending on how the client is being run.

NumBlock is designed to offer off-the-shelf pluggable consensus algorithms.

The current supported consensus algorithm:

• IBFT PoS

Block Management​

The Block management layer is the central layer that coordinates everything in the NumBlock system. It is covered in depth in the corresponding Modules section.

State​

The State inner layer contains state transition logic. It deals with how the state changes when a new block is included. It is covered in depth in the corresponding Modules section.

REST API​

The REST API layer is an JSON RPC layer that dApp developers use to interact with the blockchain. It is covered in depth in the corresponding Modules section.

Transaction Handling​

The Transaction Handling layer represents the transaction pool, and it is closely linked with other modules in the system, as transactions can be added from multiple entry points.

Interconnect​

The Interconnect layer is vital for operator interactions. Through it, node operators can easily interact with the client, providing an enjoyable UX.