An example of what your frontend could look like

The Custody API

Our Custody API enables you to safeguard your customers’ digital assets with maximal security and accessibility.

Each transaction your customer makes undergoes a multi-validation to ensure the authenticity of its intent. To guarantee compliance with AMLD5, solarisBank’s fully digital KYC solution can easily be combined with our Custody API. In addition, transactions are monitored in real time for suspicious activity. The best part? Our APIs hide smoothly behind your frontend, meaning you can offer your solution entirely in your branding.

GitHub documentation

The Banking API

Our Custody API can be complemented with digital banking services. As a 100% subsidiary of solarisBank, a technology company with a German banking license, we can integrate the full range of solarisBank’s white-label banking services, including mobile bank accounts, cards, digital loans and digital identification services (KYC). This way you can create experiences for your customers that seamlessly combine digital asset storage with modern banking applications.

The Banking API

We enable a number of use cases

We enable participants in a number of market segments to create value for their customers by making the safekeeping of digital assets a frictionless experience. We take away the operational and regulatory complexity so that you can focus on your core product.

  • Fintechs


    Create outstanding digital asset user experiences all while staying secure and compliant

  • Crypto Exchanges

    Crypto Exchanges

    Make the holding of digital assets as simple and secure as with traditional exchanges

  • Banks


    Make holding digital assets an easy and transparent process for your customers

  • STO Platforms

    STO Platforms

    Attract investors without having to apply for your own license

  • Your


    Want to build your own digital asset service? Partner with us and get started!

Your Benefits

Security & Availability

Security & Availability

Your customers’ private keys are stored securely to ensure the safety of their funds while minimizing the latency of transactions.



Create your own unique offering by mixing and matching our Custody API with the full range of solarisBank’s white-label banking services, such as digital bank accounts and cards.

Regulatory empowerment

Regulatory empowerment

By German law, any company providing custody services as of January 2020 requires an authorization by BaFin. We will take care of the regulatory requirements, so that you can focus on creating value for your customers.

Fast time to market

Fast time to market

Our modern RESTful APIs are thoroughly documented and accessible in a sandbox environment. Our team of specialists can identify your requirements quickly so you can start prototyping straight off the bat.

Our Vision

Alexis HamelMD solaris Digital Assets

We commit ourselves to become the leading infrastructure provider for the European digital asset ecosystem. We trust that by lowering the hurdles for digital asset pioneers, we are contributing to the development of a functional and secure decentralized world, which will transform the way we exchange value around the globe.

Become a digital asset pioneer with us