FOUR (4Thpillar Technologies) mainly focuses on document conversion. We believe that exchanging sensitive electronic data and documents should be as easy as exchanging information. Therefore, we have developed FOURdx as a secure, fast, and inexpensive blockchain based solution. The future approach of exchanging sensitive documents and eDelivery can replace traditional distribution services and reduce costs. In order to provide options for blockchain address ownership verification, the verification mechanism FOURID is created, which can lead to a single digital identity and verify the verified connection between the blockchain wallet and individuals. Our product reduces the use of paper and actively protects the environment, making it suitable for any industry....