Which of the following is a peer-to-peer encrypted digital currency created in 2009 by Satoshi Nakamoto?

Which of the following is a peer-to-peer encrypted digital currency created in 2009 by Satoshi Nakamoto?

Which of the following is a peer-to-peer encrypted digital currency created in 2009 by Satoshi Nakamoto? 









A) PayPal
B) DotCoin
C) Kindle
D) Bitcoin










Answer: D