Four Bitcoin Based Projects From MIT Students Posted on December 20, 2014 by cazalla From MIT 6.858 comes four Final Projects which are using Bitcoin. They are: Dryer21 – A bitcoin mixing service. CheckBits – A guarantor system for retail payments so that customer information such as a Bitcoin address can be obfuscated. TorCoin – An altcoin used to achieve consensus on the Tor network. Merkelized Abstract Syntax Trees.