Lum Network has revealed that it has received $4 million in highly successful private sale that included Tendermint's Peng Zhong, Arcanum Capital's Djamel Agaoua, and Viber's Djamel Agaoua, among others. The money will be used to expand company's decentralised and open business review system. Lum intends to enable businesses to provide credible reviews by timestamping and preserving them immutably on the Lum blockchain.