Quote from: RaiCaptchas on May 11, 2017, 04:49:24 PM

Quote from: ethantaylor on May 11, 2017, 03:29:51 PM

Quote from: ahmedjamal1998 on May 11, 2017, 03:14:03 PM

As far as I know when a transaction is double spent, the first to be included in a block and start receiving confirmations is the going that is going to pass and the other one will be forgotten later on.

Any way, whoever sent you these coins is not trustworthy. He made this double-spent transaction to make you think you received the money. In fact he put lower fees on yours hoping that it won't get confirmed before his.

Thank you for explaining the effect. It looks like I need to talk to that person and ask him why he made this double-spent transaction.

Quote from: newIndia on May 11, 2017, 03:19:00 PM

Your Tx has got confirmation. So, the "Double Spend!" does not matter to u.

The thing is, the same coin i/p of your Tx was used in some other Tx, which is not yet confirmed.

Yes. Now I'm seeing it has received three confirmations so far. I guess this transaction can now be called a successful transaction. ViaBTC's acceleration really works! I appreciate your explanation.

with bitcoin qt its simply possbile to send balance which is not completly confirmed. that means im received ethey BTCcoins from mercatrox which is an Exchange service for XRB/Mrai of the Riablocksproject.
while this transaction is not completly confirmed, im already able to send it and set it up at the blockchain for a futher transaction.
since two hours the first trans was cvonfirmed and the second one two ethey wit 10k sat byte was confirmed then very fast aswell.

What does sending unconfirmed balance that you received with double spending !!
Absolutely nothing. If what is true and you received BTC from an exchange and then made the transaction yourself, inputs shouldn't be the same then.

EDIT:
Even if that exchange is managed by you as well, inputs won't be the same for 2 transactions with time interval between them except if inteded.