Onyx International Group

​​​​​​​​​​​​​​Onyx's popular crypto currency exchange providing the ability to instantly and seamlessly exchange over 100 altcoins at the best market rate or buy them using a bank card.

Operating since 2008, Onyx has attracted over 2M registered users from around the world. Currently, the service processes more than 15K transactions weekly with a monthly turnover of around 60K BTC.

Onyx offers its API and a customizable payment widget for any crypto service that wishes to increase its turnover. The exchange provides its Affiliate program with a quite appealing revenue share mechanism. 

We offer you an intuitive interface, the best exchange rates and secure transactions. We aspire to establish mutual trust with our clients; thereof we don’t have any hidden or unreasonable fees.

We always charge only 0.5% fee and that’s it, full stop.

Crypto Currency Payment Processing

Accept over 900+ crypto currencies

Altcoins now for only 0.50%

Integrated payment gateway for crypto currencies such as Bitcoin and Litecoin

GAP600 Instant Confirmations

Onyx supports GAP600 Instant Confirmations making Bitcoin payments faster than ever before.

Air Drops

Onyx provides air drops of new coins and tokens to our users so everyone benefits.


Protect your coins in the vault, requiring a time amount you specify before being able to spend them.

Mobile Apps

Access your account, accept payments in person, and convert coins anywhere with our mobile apps for Android and iOS.

Fiat Settlements

United States and Euro merchants now have fiat settlements directly to their bank accounts.

Auto Coin Conversion

Auto convert for some of our coins, saving you the trouble of moving funds, wasting time and fees.

Point of Sale (POS)

Simple interface for in person transactions.

Multi-Coin Wallet Optionally store your coins in our secure online wallet.

Crypto Currency Buy/Sell & Payment Processing