Private blockchain network system and method for consensus based on blockchain

摘要

Disclosed are a private blockchain network system and an agreeing method based on a lightweight high-performance blockchain. According to an embodiment of the present invention, the private blockchain network system comprises: a trust node which receives a transaction generated in a network, to transfer the transaction to a block generation node, to receive a voting message from each block verification node, and to determine whether an agreement is reached or not; a block generation node which receives the transaction from the trust node, to generate a latest block, and to broadcast the latest block to the other nodes on the network excluding itself; one or more block verification nodes which verify the validity of the latest block received from the block generation node to respectively vote for a verification result to the trust node; and one or more participation nodes which connect the latest block received from the block generation node to its own blockchain and to add the latest block. The other nodes excluding the trust node are able to first connect the latest block to its own existing blockchain and to add the latest block before receiving a voting result for the latest block from the trust node. The present invention aims to settle the issue of lowered communication speed based on a private blockchain, to improve a processing speed, to enhance security, and to perform an integrated management based on the GUI.