Scripts for getting my past crypto transactions and prices?

I need to report my crypto mining and trading for tax. I have been mining ethereum, ergo and zilliqa. And because there is plenty of transactions during last year, getting prices of every moment by hand would mean huge work.

Is there scripts available for getting my transactions from blockchains, and any api for getting prices of each crypto on given time in the past? I am seasoned linux user, and I am familiar with perl, python, bash, C and many other langiages. Most likely can modify scripts to my needs regardless what lang it is done with.

Any hints?

(Tried to post this to r/CryptoCurrency but I don't have enough karma)