Powered by the blockchain and smart contract technology, Polymath and its unique Security Token Standard Protocol, ST - 20,
enables securities issuers to create digital tokens to represent shares and other instruments relating to traditional financial assets like private equity, stocks, debentures, commodities, VC funds, real estate, royalties, and insurance.
Since your main objective for the secured credit card is just to
enable you build your credit, you should be able to choose a card
issuer that offers a good minimum
security deposit so that you don't tie down your money unnecessarily.