This is the last indicator that I am publishing maybe for a looong time.
There are few similar indicators even open source out there.
This reads two indices from bitfinex, long and short of BTCUSD (default). then calculates the main Open Interest from the data.
Why did I closed the source? lets just say the open source versions, are a liiiitle wrong in their calculations !
Remember, this works On ANY exchange or broker that provides long/short indices for an instrument (you need both long and short from same broker / exchange).
But the access is public, use it and have fun.
The blue histogram is one of my personal momentum calculations for the open interest. Not sure if it can be used on anything but it's there.