CME bitcoin futures volume multiplied by 5, as each contract is 5 bitcoin. Days when the exchange are closed shows no volume.
end-of-day Open Interest as provided by CME for D interval. Can select Commodity (Gold.Silver,Crude), year, contract (Feb,April,June,AugOct,Dec)
just update the settlement date.
As you can see, this script plots the current (10-min. delayed) CME Futures price versus Bitfinex, Bitstamp, and Coinbase prices. It's displayed here on a 30 minute view because at the time of writing the futures have been alive for approximately one day. The script will likely be more useful on longer time frames as a macro-level indicator. It's pretty simple...