ETND parachain is an independent application chain that can freely form a supernode network and write personalized smart contracts. Parachains share the consensus of ETND's mainnet, and realize low-cost construction of a credible public chain system. Parachain architecture simultaneously realizes the efficiency, security and credibility of the blockchain network.

Through a variety of cryptography technologies such as proxy re-encryption, ETND supports the corresponding access control permissions for each role in the application ecosystem, ensuring that low-privileged roles cannot operate or access high-privileged data. At the same time, it supports data sharing privacy and data encryption on the chain.

ETND sharding nodes can link with other nodes in the public chain network at any time, and while synchronizing missing data with other nodes, they can also share their own stored data with other nodes to ensure the integrity and continuity of their data.