Aimed to make pricing “more fair and rigorous,” KuCoin said, KuMEX uses a bitcoin spot index providing a volume-weighted average of the U.S. dollar price of bitcoin across six exchanges: Coinbase Pro, Bitstamp, Kraken, Gemini, Liquid and Bittrex. Check it more here. https://www.coindesk.com/kucoin-launches-bitcoin-derivatives-trading-with-20x-leverage