Hi Shentist, thanks for the answer, most of which I don't understand at all. What is a UIA? Haven't explored the wallet yet as i had an immense struggle creating the wallet in the first place and that got me into looking for answers all over the net first.
In the youtube video "Smart Trading Decentralised" CCEDK wrote in a comment "'You can easily shift bitcoin into your bitshares wallet and back out...." but he hasn't yet explained how to do that. '
UIA is a User Issued Asset. It's an asset controlled by a 3rd party, so you must trust the issuer that it will be worth what they say it is worth. For example your balance at an exchange like poloniex, bitstamp or coinbase requires you trust that they will honor your balance when you go to withdraw. The same thing with a UIA.
One such UIA is OPEN.BTC which is just BTC held by OpenLedger(CCEDK).
1 BTC = 1 OPEN.BTC
If your BTC were held by Poloniex you could imagine your balance as a UIA called Poloniex.BTC
To send BTC to your BitShares wallet go to your BitShares Account page and click Deposit/Withdraw on the left
Then from the there you have 3 choices BlockTrades | CCEDK | MetaExchange
They are all reputable and safe for holding BTC, but if you intend to trade this BTC on BitShares I would suggest looking at the various pairs first to find the markets with the best liquidity.
Here's 3 such markets to compare.
https://bitshares.openledger.info/#/market/BTS_OPEN.BTChttps://bitshares.openledger.info/#/market/BTS_METAEX.BTChttps://bitshares.openledger.info/#/market/BTS_TRADE.BTCOnce you select one of these exchanges from the deposit/withdraw screen, you can generate a BTC deposit address.
In sending BTC to that address your BitShares account will be credited with the corrisponding about of a BTC UIA from the issuer.
You can withdraw the BTC at any time in the same manner, from the same screen.
I hope that makes sense. It's a bit to get used to at first, I know. Hopefully we can get some explainer videos for this because it's certainly not obvious. : )