Nimiq Pay app now supports BTC Lightning!


Buy and sell crypto directly to and from your bank account with the world’s first crypto-fiat Atomic Swaps.

Try it

The definitive way to buy and sell


Currently supports NIM and BTC.

Fiat currencies

Currently supports EUR.

At just 1,5% fees

  • No sign-up, no personal data

    S3 requires no user account or registration. It simply works.

  • Every wallet is supported

    Use the Nimiq Wallet or any other service. All you need is an address.

  • Sell and buy with your bank

    Buy by sending a wire transfer. Sell by sending a transaction – that’s it.

Learn it

Super simple, super secure and 
100% self-custodial

  • As secure as smart-contracts

    So called HTLCs enable trustless and almost instant Atomic Swaps.

  • As reliable as a German bank

    The fiat side of the swap is covered by a fully regulated German bank.

  • Based on Nimiq OASIS

    S3 is original technology, conceived and developed by Nimiq.

The definitive way to buy and sell

Integrate it

Implement SuperSimpleSwap

Enable your users and audience to buy and sell from inside your application or using your link.

  • Integrate the Widget

    Effortlessly implement the SuperSimpleSwap Widget into your product.

  • Implement the API

    Create your own service with the SuperSimpleSwap API, a buying and selling solution powered by OASIS.

Talk to a Nimiq Expert

Collaborate with NIMIQ and integrate OASIS

Team Nimiq offers dedicated service and support for strategic partners. Get in contact and be one of the first to leverage a new paradigm in value transfer.