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Showing 5 of 5 results by puchit
Re: How many confirmations do I have to have before I can move/spend BTC?
I realize that if I have a wallet with 1 BTC and I receive .5 BTC, have 2 confirmations on it, spend .5 BTC and then it turns out that transaction wasn't legit I will just end up spending .5 of my original 1 BTC.
Not really. It depends.
For any ordinary transaction (not block generation), there are inputs and outputs.
If you use your "1 BTC" as an input to create a transaction of 0.5 BTC, you will left with a 0.5 BTC change.
If you use your "0.5 BTC" as an input, and that incoming transaction has been double-spent, your 0.5 BTC outgoing transaction will never get confirmed as well, and you will left with your 1 BTC.
Of course, a transaction with 2 confirmations is very unlikely to be double-spent at this moment (51% attack is very unlikely now).
Is there a btc gambling site that let's me start with no bitcoins and win bitcoins (at least 1uBTC or 10uBTC)? 
You can get 1000 satoshi every minute from the built-in faucet on Primedice.