jm HÝO@¶_¼2ÝtÎ °Eua*1MÍ©^¼ wÄULhmm, thanks good place to start. do you know of a place to download the hashrate for every day for the past few years (on BTC or BCH)?
https://whatsonchain.com/tx/8e3a1c15c8b545332606ccc5d98ec5fb2dc9eefe07f56cec462f167e2e226538