FOUR (4Thpillar Technologies) primarily focuses on document conversion. We believe that exchanging sensitive electronic data and documents should be as easy as sharing information, which is why we developed FOURdx - a secure, fast, and cost-effective blockchain-based solution for the future of sensitive document exchange and eDelivery, capable of replacing traditional distribution services while reducing costs. To provide an option for verifying ownership of blockchain addresses, we created the verification mechanism FOURid, which can lead to a single digital identity and verify the authenticated connection between blockchain wallets and individuals. Our products reduce paper usage and actively protect the environment, applicable in any industry.