Proof is a platform providing a hybrid solution for Security Token Offerings, as well as a novel ecosystem built for the emerging primary market on the blockchain. To support this ecosystem, the multimodal hybrid token Proof Platform Token (PPT) was created. The PPT serves as the fundamental economic unit of the Proof ecosystem and can be used to pay for various value-added services on the Proof platform. Additionally, its conversion rights will be airdropped in mid-2019. After the airdrop, eligible investors will become shareholders of Proof Global Limited. The total minting supply of PPT is one billion, with no further minting planned. Appropriately timed, one billion shares will be distributed in the form of Proof Share Tokens (PST).