Fiat stablecoin collaborated with USD and used custodian wallets like Fireblocks for holding the token assets, providing features like mint, redeem, withdraw, and deposit. MINT and Redeem are done through custodian wallets. Withdraw and Deposit are done between custodian and non custodian wallets. USD deposit and withdraw feature is provided which is approved by admin. Other process like KYC and AML is handle through solidus and chainanalysis.