Since bitcoin is pseudo anonymous,there is a great need for an altcoin with anonymity.Three altcoins stand ahead in the race.Dash,Zcash and Monero.dash released in 2014 uses darksend to help anonymize the transaction process by mixing coins.Zcash transactions are untraceable because it uses encryption called zk-SNARK.Monero uses a method called Cryptonote.Ring signatures were invented giving the world of cryptography a new type of key process.Also monero is the trading partner of US Exchange poloniex and is paired with every major coin on the platform.Monero leads the race and is widely accepted in dark net markets.