China announced in September that all cryptocurrency transactions in the country are illegal, effectively putting the brakes on any crypto-related activities within Chinese borders. In the U.S., things are less clear. Federal Reserve Chair Jerome Powell said recently that he has “no intention” of banning cryptocurrency in the U.S while Security and Exchange Commission Chairman Gary Gensler has consistently commented on both his own agency’s and the Commodity Futures Trading Commission’s role in policing the industry.
The electric carmaker said in May that it would no longer accept the cryptocurrency for purchases. It's been a wild ride for bitcoin the last three years.

It has a shorter blockchain creation time (one minute) and a vastly greater number of coins in circulation — the creators’ target of 100 billion units mined by July 2015 was met, and there’s a supply limit of 5.2 billion units mined every year thereafter, with no known supply limit.
Mining computers compile valid transactions into a new block and attempt to generate the cryptographic link to the previous block by finding a solution to a complex algorithm. When a computer succeeds in generating the link, it adds the block to its version of the blockchain file and broadcasts the update across the network.