Fintech

Digital bank with fiat and crypto wallets

Client: Under NDA Multi-currency ledger · TRON / USDT · Virtual cards · KYC · Biometric auth
Digital banking app with fiat and crypto wallets

Most banking apps treat crypto as a bolt-on: a separate screen, a separate balance, a separate mental model for the user. This one was built with both in the same account view from the start.

What it does

  • Multi-currency accounts — fiat balances held and displayed side by side
  • USDT wallets on TRON — on-chain custody in the same app as the fiat side
  • Virtual cards — issued and managed in-app
  • Full KYC — identity verification as part of onboarding, not a later gate
  • Biometric login — device biometrics for session access

Why the compliance work is the hard part

The engineering that takes the time in a product like this is rarely the ledger. It is KYC: capturing identity documents, running verification, handling the cases that fail it, and keeping an audit trail that satisfies whoever asks for it later. That work is unglamorous, it cannot be skipped, and it decides the launch date.

Running something like this?

Twenty minutes, no slides. If it’s a legacy system, the honest first step is usually a codebase audit — fixed price, two weeks, and yours to take anywhere.