Bitcoin is a decentralized electronic cash that is the government or the bank has no interference with this decentralized  cash transactions or dealings  .The crypto revolutionist introduced.Bitcoin to destabilize and undermine governments .The truth is that the government cannot manipulate the circulating supply of Bitcoin .Since Bitcoin is a peer to peer form of circulation the government cannot freeze the account or steal them .the government around the world don't want a currency that has a limited amount of supply  the volatility of Bitcoin.is influenced by regulations , politics and by the changes in technology 2017 was a record market capitalization for Bitcoin to my assumption ..