I fixed the variable assignments and added switching of timeframes over indicator inputs.
To switch timeframes click on the indicator, open its settings and switch the timeframe to either monthly, weekly or daily.
Or on your chart just click on indicators and search for "Bitcoin Stock to Flow Model Value"
What timeframe do you have selected?
Keep in mind that the indicator only works on monthly, weekly and daily timeframes.
Not sure there is. The best I could find is the BLX (Brave New Coin Liquid Index for Bitcoin) which dates back to July 2010
*****it does not need the timeFrame variable. previously, I had a bunch of excess code specifying the time frame because I couldn't figure out why my data values were coming out wrong. it was the := syntax for reassigning a variable.
stock = security("QUANDL:BCHAIN/TOTBC", period, close)
btcprice = security("QUANDL:BCHAIN/MKPRU", period, close)