If you transfer Bitcoins to a Tor hidden service you're just asking for them to be stolen. One cool thing about Bitcoin is you can use "colored coins" [1] to t

If you transfer Bitcoins to a Tor hidden service you're just asking for them to be stolen. One cool thing about Bitcoin is you can use "colored coins" [1] to track shares of stock, then you can use Bitcoin's "script"[2]/contracts[3] to do trustless/atomic trades. It requires the company (or some other counterparty) to issue the stock as colored coins though, so for now it's limited mostly to Bitcoin related companies. You can even do trustless cross-chain trades, for example if a you wanted to trade Litecoin for a Bitcoin (or Bitcoin blockchain-based colored coin) [4]. [1] http://coloredcoins.org/ http://coloredcoins.org/ [2] https://en.bitcoin.it/wiki/Script https://en.bitcoin.it/wiki/Script [3] https://en.bitcoin.it/wiki/Contracts https://en.bitcoin.it/wiki/Contracts [4] https://en.bitcoin.it/wiki/Contracts#Example_5:_Trading_across_chains https://en.bitcoin.it/wiki/Contracts#Example_5:_Trading_acro...