Due to instability, extended downtime, and bad data from Bitfinex, all .XBT indices have been temporarily moved to Bitstamp, where they will remain until Friday. After Friday’s settlement, we will switch to TradeBlock’s .XBX Index.
This switch affects the XBU, XBT, and BVOL-series contracts. ETH is still being settled on Kraken, and XLT (Litecoin) is still being settled on Bitfinex for the time being. We are investigating alternatives.