Arcium has launched its mainnet Alpha version on Solana, transitioning from a testing environment to a production-ready infrastructure. This development aims to enhance crypto capital markets on public blockchains by enabling developers to create verifiable and composable applications with fully encrypted data. Simultaneously, Umbra has introduced its "private mainnet," establishing a shielded financial layer on Solana. Initially, Umbra offers shielded transfers and encrypted exchange functionality, with access limited to 100 users per week and a $500 deposit cap. The project plans to expand access and increase limits later in February.