"BITONE is a blockchain network that allows numerous audit nodes to verify the integrity of data through the self-developed 2DIVS system and stores the verified data in the block chain in the IPFS method. 2DIVS stands for Distributed Data Integrity Verification System. It is a concept of data verification block chain network. Numerous data exist in the world, both offline and online, but since most data is stored in a centralized device, reporting on data integrity has no choice but to depend on the announcement of the relevant company or institution. In some cases, the results are announced after verification through a third-party audit, but even this cannot say that the reliability of the results has been secured. It is also insufficient to induce reasonable trust to have the integrity checked by multiple institutions or auditors. These cases occur in many areas, and the area of ​​data verification is an essential element of various business groups."