Looking for a place to instantly and effortlessly exchange Bitcoin for Substratum at an affordable rate? You are in the right place! The site offers low fees, secure exchanges, 24/7 support, and a functional user-friendly interface. Here, users can exchange cryptocurrency at a fixed or floating rate. In the first case, users are able to “fix” the rate for 15 minutes. In this way, you will be protected against cryptocurrency market volatility. But note that in such a case, the commission is higher. If the rate increases, this option can help you save a significant amount of cryptocurrency. Alternatively, you can use a floating rate and take the risk of the rate change. Exchange BTC for SUB on our site or within the Changelly app.