Grimm [XGM] mainnet was launched on 5 August 2019 as an open-source platform without ICO and without pre-mine. XGM is a private, optionally transparent, and scalable cryptocurrency powered by the Mimblewimble protocol. Grimm claims to be the first modular platform with a new 'Confidential Parallel-chains' architecture that provides users with the ability to create their own independent Mimblewimble blockchain for any project or product. New blockchains created on the Grimm platform are called Confidential Assetchains.