Fiat and Crypto in One App

Give your customers accounts, cards and crypto in a single branded product: buy and sell, convert crypto to fiat, and spend anywhere. Assets are held by enterprise custody partners like BitGo and Fireblocks - you stay the brand, regulated custodians hold the keys.

  • Accounts and cards
  • Buy, sell and convert crypto
  • Regulated custody partners
  • KYC and onboarding
  • Branded apps
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Crypto banking dashboard
Crypto banking mobile app

Case Studies

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Multipass is a financial services provider offering global business accounts, multi-currency payments, and cross-border transaction solutions.

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Pay IO case study
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Paysend & Crassula - a banking solution for international companies

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LuxPay is at the forefront of providing advanced financial services, designed to meet the needs of modern businesses and consumers alike.

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Wickie offers secure and scalable fiat and cryptocurrency payment solutions, providing users with digital wallets and seamless financial services across multiple platforms.

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In the MiCA era, crypto is a trust problem, not a feature

Anyone can bolt a swap widget onto an app. What customers and regulators actually ask is: who holds the assets, under what licence, and what happens when something goes wrong. That is where most crypto products are thin.

Custody is the hard part

Holding customer crypto safely is a specialist, regulated discipline. Building your own key management is a liability you do not want to own.

MiCA raised the bar

Offering crypto in the EU now means clear licensing and controls. Your stack has to be built for that regime, not retrofitted to it.

Fiat and crypto live apart

Customers do not want two apps. Yet most stacks keep fiat accounts and crypto on separate rails, with a clunky bridge between them.

Crassula CORE architecture: mobile, web and API on top, integration hub, crypto module, back office and custody partners

One platform that orchestrates the whole stack

Crassula is the software layer between your brand and the providers underneath. The core sits in the middle: branded mobile and web apps and an open API on top, an integration hub for card issuers and BaaS partners on one side, and the crypto module wired to custody, liquidity and monitoring on the other.

Customer assets sit with enterprise custody and liquidity specialists like BitGo, Fireblocks and Kraken, never on your servers. You bring your own crypto licence or a licensed partner; the platform orchestrates accounts, conversions and the back office on top.

What your customers get

Crypto accounts

Each customer gets crypto accounts with linked addresses, held with enterprise custody providers.

Buy, sell and convert

Buy and sell operations for end users and instant crypto-to-fiat conversion, with liquidity from connected providers.

Crypto-linked cards

Let customers spend crypto-linked balances anywhere Visa or Mastercard is accepted, settled to fiat underneath.

Fiat accounts alongside

Multi-currency fiat accounts and IBANs live in the same app, so customers move between fiat and crypto without leaving your product.

FX and transfers

Currency exchange and transfers on real rails - SEPA, SWIFT and more - next to the crypto experience.

Compliance built in

KYC, AML monitoring and transaction controls you operate, with a Back-Office Dashboard to run the whole program.

See it in the product

Fiat and crypto in the same account list

Customers hold dollar, euro and crypto accounts side by side and send from any of them in one flow. No second app, no bridge to a separate exchange.

  • Multi-currency fiat accounts and IBANs
  • Crypto accounts with linked addresses
  • Move between them without leaving the app
Send Money screen listing a dollar account, a highlighted crypto account and a business account

Cards that spend crypto, settled in fiat

Issue Bitcoin and Ethereum linked Visa and Mastercard cards. Customers pay anywhere the network is accepted, and the balance converts to fiat at the point of sale.

Two crypto-linked payment cards: a blue Ethereum card and an orange Bitcoin Visa card

Convert and cash out to local currency

Buy, sell and convert with liquidity from connected providers, then settle into a local fiat account. The same rails power cheaper cross-border payouts, with the rate, fee and arrival time shown up front.

Currency converter sending 150 EUR and paying out 8,498.76 PHP with rate, fee and arrival time

Compliance you run from one dashboard

KYC onboarding, AML and sanctions checks, transaction monitoring and policy adherence live in the Back-Office Dashboard, so your team runs the whole program from a single console.

Compliance Adherence document with AML Policy and Sanctions Policy checklists

Custody, liquidity and monitoring run through enterprise specialists

BitGo
Fireblocks
Kraken
Chainalysis

Who launches crypto banking

Crypto-native fintechs

Add regulated fiat accounts, IBANs and cards to a crypto product so users can cash out and spend without leaving your app.

Neobanks adding crypto

Give existing customers buy, sell and hold, with custody handled by specialists and crypto sitting beside their fiat accounts.

Exchanges going full-stack

Wrap accounts, cards and payments around your exchange so users can bank, not just trade, on your brand.

Remittance and cross-border

Use crypto-to-fiat rails for faster, cheaper cross-border flows, settled into local fiat accounts.

MiCA
built for the EU crypto regime
150+
companies run on Crassula
Fiat + crypto
in one branded app
PCI DSS
Level 1, audited yearly

Crypto banking, explained

FAQ

Enterprise-grade custody providers, such as BitGo and Fireblocks, hold the assets. Crassula is the technology and product layer that orchestrates accounts, conversions and the customer experience - it does not take custody of customer funds or keys.

Offering crypto services in the EU is a regulated activity. You either hold your own authorization or work with a licensed partner; Crassula provides the technology, not the licence. We help you map your product to the right licensing setup.

Yes - that is the point. Customers get multi-currency fiat accounts, IBANs and cards alongside crypto accounts in one branded product, and move between them without switching apps.

Yes. Crypto-linked cards let customers spend anywhere Visa or Mastercard is accepted, with conversion to fiat handled at the point of sale. Crypto-to-fiat conversion is also available in-app.

A branded product built on ready-to-market apps rolls out in weeks. Your timeline depends mainly on your licensing and custody-partner setup, not the Crassula build.

Create a digital bank in a matter of days

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