Established in 2017, the Slovenian company 4thpillar technologies Ltd. (i.e. 4THTECH) aims to address the problem of blockchain eDelivery (i.e. document exchange) and provide an option for blockchain address ownership verification.

4THTECH infrastructure reportedly consists of four finished blockchain-based products; (1) FOURdx (i.e. document or file exchange protocol/eDelivery); (2) FOURid (i.e. digital identity verification mechanism); (3) 4THTECH ADD-ON (i.e. Google Chrome extension with the build-in document or file exchange); (4) FOUR-TOKEN (i.e. main value and “GAS”), and; (5) HI-WISE (i.e. hardware & mobile wallet).