XBTZ19 Data Capture, 6 months of Bitcoin Futures data

In my experience Tradingview does not keep data of expired Bitmex contracts after expiration. The primary purpose of this post is to keep the valuable data from XBTZ19 contract from being lost forever. My indicator script XBT Contango Calculator Version 3 is used in this example to capture all the data from the December Futures contract. This post should be a historical record of how backwardation and contango affected price action during the last 6 months. I will do this post at each expiration, primarily for my own benefit and analysis, but also as a record other traders in the community can look back on. Please also see below "Links to related Ideas"