ALT5 Sigma Corporation is a fintech holding company that provides blockchain-powered platforms and services for digital asset trading and payments. The company operates three core products: ALT5 Prime, an electronic over-the-counter trading platform for buying and selling digital assets; ALT5 Pay, a cryptocurrency payment gateway for merchants; and StrataCarte, a multi-currency payment card solution. It serves institutional customers including banks, broker-dealers, hedge funds, and merchants across approximately 50 countries, generating revenue through setup fees, monthly maintenance fees, and transaction fees based on volume and industry.