The document discusses the limitations of current blockchain systems in handling large-scale data transmission while maintaining safety and decentralization, highlighting issues with Ethereum such as high gas fees and slow confirmation times. It introduces a new consensus mechanism called Data-based Delegated Proof of Stake (ddpos) used in dbxchain, which aims to combine high transaction performance with proper decentralization. The document also showcases various applications of dbx, including the Cardeal dapp, which has generated significant transaction volumes.