I have a question for anyone willing to share.  According to the US Tax Authorities, blocks should be reported as income when they are earned or when they are paid (your choice as long as it is consistent).  Although this obviously is hard for anyone to track, but I am going to report this to reduce the chance of issues with my other crypto investments that is harder to report (little piggy is cute / big piggies get slaughtered).

As part of that, I am building in historical prices so any of us can import rewards and the system will give you the US dollar (tether) value based on the average price for the day it was found.  Going forward, it will have up to the minute BTC prices.  I am going to build in international currency tables as well and would like to know which currencies people have interest in and how far back I should go.  I have a data source that will give daily values for 166 currencies going forward.  I have another with history for 2017 for these currencies: AUD, BRL, CAD, CNY, EUR, HKD, INR, IDR, JPY, MYR, MXN, NZD, NOK, PEN, RUB, SAR, SGD, ZAR, KRW, SEK, CHF, TWD, THB, TRY, GBP, USD, VND.  

First off, is anyone interested in this at all?  Secondly, would you like a currency other than these?  Third, does anyone need this data before 2017?