Quote from: ranochigo on November 18, 2015, 01:59:32 PM

Quote from: Decoded on November 17, 2015, 03:23:59 AM

The possibility of a double spend Shocked

But really, this is unpreventable.
-snip-

Yes. But Bitcoin itself right now makes double spending on no confirmation transactions extremely hard and expensive. After one confirmation, the probability is close to 0. 51% attacks would be very possible at all times but there is no motive for such an attack and it is too expensive.

Quote from: richardsNY on November 17, 2015, 09:07:00 PM

Quote from: fr4nkthetank on November 17, 2015, 03:52:53 AM

Quote from: PenguinFire on June 27, 2015, 03:22:04 AM

For me, probably the transaction confirmation times. That is one the biggest wow or attractive factors with bitcoin for myself personally. It is getting too long.

Yup. If you need it done fast, use dogecoin as an example. I've sent stuff with tx fee, and it took over 6-7 hours....just the time to find a block. etc, etc. A lot of people dont think this is a problem, but its a huge problem.

Using an altcoin is not the solution. I send my transactions always with a 10K satoshi fee. The transactions confirm within 2 blocks. It's that simple. To be even more sure, you must add 1000 satoshi's per KB. Then you are mostly fine.

No matter how much fee you pay, a block must be mined before you have a chance for the transaction to be confirmed. And yes, alt coin is not a solution either. Alt coins, with their faster block times and lesser hashrate have lesser security and would need more confirmation for it to be as safe as Bitcoin's one confirmation.

I know miners need to mine a block first. Adding an appropriate fee will make your chances of getting your transaction included in the next block much higher. If you add an even higher than recommended fee, than your chances of being included in the next block are getting even bigger.