Anonymize the Blockchain Using CoinJoin or Mixcoin

We need to enhance the cryptocurrency Neutrino to anonymize the blockchain. See the source for Neutrino at [login to view URL] The main problem we are trying to solve is this: If a user is somehow linked to one transaction in the blockchain, then other information about that user’s transactions can be deduced, including, in some scenarios, the user’s complete transaction history. This is actually a problem in almost all crypto-currencies. We're looking for someone who is already very familiar with the Bitcoin/Litecoin source code. We know of three proposed solutions to this issue right now: Zerocash (formerly Zerocoin), CoinJoin and Mixcoin. We’re not stuck on those solutions, though, if you know of another workable solution. We are looking for a solution that is similar in spirit to Darkcoin's implementation of CoinJoin in that: * the transaction anonymization feature should integrated into the command-line and GUI clients * transaction anonymization should be on by default for the casual user * no configuration should be required by the casual user * only minimal configuration is required by a client that is hosting the joining of transactions--these are called "master nodes" in DarkCoin. Here are some links related to Zerocoin and Zerocash: * [login to view URL] * Some info on a presentation related to Zerocash * [login to view URL] * Zerocash technical paper, presented at the 2014 IEEE Security & Privacy Symposium. * [login to view URL] * The Zerocash project web site Another approach is CoinJoin. Here are some links: * [login to view URL] * Brief sketch of the CoinJoin idea * [login to view URL] * An implementation of CoinJoin * [login to view URL] * Another implementation of CoinJoin Also, for what it’s worth, one cryptocurrency, Darkcoin has claimed to have implemented a particular approach to CoinJoin. As of May 25, Darkcoin had not yet released the full client source code for doing spend transactions, but they say they will release the full source in early June. Here are some links: * [login to view URL] * [login to view URL] Finally, here is some info on Mixcoin, another, very promising proposed solution: * [login to view URL] * Overview of the Mixcoin idea posted by Andrew Miller * [login to view URL] * The full paper on Mixcoin by Andrew Miller and others