Sun Oct 11, 2015 1:46 am

I've reviewed all the posts in this thread and, while disappointingly there has been some altcoin spam (despite the clear "Bitcoin Privacy" topic), it's also been clear we don't have many options in Bitcoin that truly protect privacy in a quality manner (trustless, low cost, open source to make transparent how the service works, validated by experts). It's easy for people to claim a product or service helps privacy, but privacy is actually very hard to get right. I think this point is essential to understand and remember.The ready-right-now options I saw were: Jumblr and Shiftd.xyz -- Jumblr is very new and experimental and still being tested and refined, while Shiftd.xyz is as far as I can see a completely opaque service that does not reveal how it works, nor what information is recorded when converting between BTC & LTC. It's also a web service, with no cryptographic guarantee that funds will not be stolen. Lastly, it has an atrocious 5% fee, which is super high. Thus, it's basically "privacy theatre".We do have one good option though, and it's ready now. It is the service Roger mentioned in his first post: "", but which I was sad to see did not get any further attention or elaboration.Although there is no GUI yet (still in development), there is a command line interface. It's not that difficult to use and, most importantly, it actually works and is: trustless as it uses smart contract tech to keep private keys with user / less than 0.002% fee on average / open source on GitHub / based on tested CoinJoin technology / peer-reviewed by Greg Maxwell (cryptographer and Bitcoin's privacy expert & inventor of 'CoinJoin' & co-inventor of 'Confidential Transactions' with Dr. Adam Back). -- As a point of comparison here, the 0.002% fee I cited is 2,500x cheaper than the 5% fee of the other shiftd.xyz service.JoinMarket is also a very active project. Here is the order book showing all the people who have locked their bitcoins, providing liquidity, to allow people to CoinJoin with them:And here's the GitHub:Lastly, here's a great infographic that nicely summarizes JoinMarket's concept: