Maybe @brighton36 can give you a good answer.
You can obtain private key, but then you’d have to have it stored on your computer which is obviously not a good idea. There are utilities that can help you get private key for a given Counterwallet address. You could add the address to your Bitcoin Qt wallet. I don’t know how to do that “on the fly”.
Yes, it can be done in several ways and the corresponding private keys can be obtained too.
Counterwallet uses JavaScript to generate the addresses (see https://github.com/CounterpartyXCP/counterwallet/blob/master/src/js/util.bitcore.js ).
Anyone can easily generate a list of addresses that belong to their Counterwallet from the pass phrase with this or other utility - Counterwallet uses the standard deterministic path and shows first twenty-odd addresses.
Here we’ll show two methods that can …
Hi I've just released a tool to allow you to check/retrieve/generate your counterwallet bitcoin addresses/keys using your counterwallet 12 word passphrase. The script runs client side only (in your browser using javascript). No keys, passphrases are transmitted server side. For additional security the script can also be run while in offline/disconnected mode The tool can be accessed at https://blockscan.com/tool_generatekey. Because it is built purely with javascript and html, all of the code i…