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1  Bitcoin / Bitcoin Technical Support / Re: [GUIDE] Delete your 0/unconfirmed transactions in 30 seconds on: January 22, 2017, 02:17:50 PM
Quote from: longbob72 on January 22, 2017, 02:15:18 PM
Quote from: .Sinister on January 22, 2017, 01:49:17 PM
Sorry for the bump but are you guys aware of the fact that people might scam with that method? A lot of people do not know that it is possible to "delete" unconfirmed transactions, so they might give the goods or whatever before it gets confirmed. Or do I miss something here?

You're right and people have scammed with this method. But people have been warned not to trust unconfirmed transactions.

Aren't there any aspirations in the Bitcoin community to prevent this?

2  Bitcoin / Bitcoin Technical Support / Re: [GUIDE] Delete your 0/unconfirmed transactions in 30 seconds on: January 22, 2017, 02:10:46 PM
Quote from: ranochigo on January 22, 2017, 02:06:24 PM
Quote from: .Sinister on January 22, 2017, 01:49:17 PM
Sorry for the bump but are you guys aware of the fact that people might scam with that method? A lot of people do not know that it is possible to "delete" unconfirmed transactions, so they might give the goods or whatever before it gets confirmed. Or do I miss something here?
It's not that easy. If you were to try to replace a transaction, nodes that has a transaction which spends that UXTO will reject it. Hence, the probability of nodes relaying and propagating them is very low.

However, it is very possible with opt-in RBF. Nodes can be configured to accept and relay transactions which spends the same UXTO as another transaction in the mempool and has Opt-in RBF flagged.

If you are dealing with huge amount of BTC, wait for at least a confirmation. It's that simple.

Tl,dr; it isn't super easy.

I just understood the half of your answer but shouldn't it be possible to apply what the original poster described, wait a week and then spend the funds?
3  Bitcoin / Bitcoin Technical Support / Scamming with -zapwallet? Huge risk? on: January 22, 2017, 02:04:16 PM
Isn't there a huge risk when you can "cancel" unconfirmed transactions?

A lot of people do not know that you can cancel transactions with -zapwallet for instance, so that the transaction is canceled and the bitcoins are back in your wallet. People might provide goods or whatever before the transaction gets one confirmation.

Don't you think that this is a huge risk? Especially for merchants who don't require confirmations? Or am I missing something here?
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4  Bitcoin / Bitcoin Technical Support / Re: [GUIDE] Delete your 0/unconfirmed transactions in 30 seconds on: January 22, 2017, 01:49:17 PM
Sorry for the bump but are you guys aware of the fact that people might scam with that method? A lot of people do not know that it is possible to "delete" unconfirmed transactions, so they might give the goods or whatever before it gets confirmed. Or do I miss something here?
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