Proof is a platform that provides hybrid solutions for security token issuance. At the same time, it is also a brand new ecosystem established for the emerging primary market on the blockchain. In order to support this ecosystem, the multi-mode hybrid token Proof Platform Token (PPT) came into being. PPT is the basic economic unit of the Proof ecosystem and can be used to pay for various value-added services on the Proof platform. In addition, its equity conversion will be airdropped in mid-2019. After the airdrop, qualified investors will become shareholders of Proof Global Limited. The total amount of PPT minted is one billion, and there will be no further minting. In due course, one billion shares will be distributed in the form of Proof Equity Tokens (PST).