Block Ledger is the company that brings Blockchain to the accounting and audit industry. We aim to create a decentralized ledger through a triple entry accounting system and revolutionise the traditional audit procedure. We believe in the trust mechanism of Blockchain that will allow small and medium businesses to access auditing and other high-level accounting services previously only available to large companies, allowing a fairer, more transparent business world to flourish. At present, the biggest problem of the Blockchain is its poor practical application value, and that people outside the Blockchain society do not understand enough of the basic concept of Blockchain. On the other hand, insiders do not understand specific industries, specific business and how to apply Blockchain to everyday life.