Ticker btc
From 2018-06-01 00:00:00
Security Type Future
Market USA
Resolution Minute
Status Resolved

The BTC futures data during backtest shows that it has its contract expiry on 6/1/2018 and the first of the month thereafter. This should not be the case. In the backtest there are two other futures and their expiry date is correct so this seems to be a BTC issue specifically (have not found any other tickers yet).