If I get you right the sender did an RBF to another address, that’s something i don’t think an RBF can do, because you can’t change the destination address using RBF. It can only be accomplished with the CPFP method.
With the images from picture the transaction wasn’t RBF enabled and I doubt after making that transaction you can do that. Once a transaction is initiated without Full RBF enabled you wait for the confirmation or the transaction been dropped.
Also about the issue giving out the product after making transaction with the venting machine I think that has been fixed by you/seller waiting for at least a single confirmation or for at most 6 confirmation. With six confirmation the transaction is agreed to be save already
Topic: Is FullRBF allowing double spend? - page 2. (Read 349 times)
Based on my experience, yes.
Here is the history, in my telegram group some users were talking about the RBF flag and how this allow you many things from bump the fee to increment the priority of your transaction, up to change the destination address and amounts, even return the balance minus fee to the source address or some other address under you control.
That is some OK in the most of the cases, but some user reach me privately to show me that is not necessary to have the RFB flag enable in a TX to be replaced or modified, this is a FullRBF
This user send me some dust amount to my address and some of his addresses. The original TX doesn’t have the RFB flag.
After some days of the TX waiting in mempool, he do a FullRBF twice, first of it was changing the destination address to another address and 8 minutes later a second FullRBF changing the destination once again to my address.
Images
Original TX
First FullRFB
Second FullRFB
Final TXID: 942a454340c5115d769a16aad85b85a19875bb2f5e544de1b776570b76294f62
If he hadn't performed that second FullRBF the dust amount would have ended in one of his addresses.
This makes me think about the post of satoshi about the vending machine.
What if a dishonest user sends a TX with low Fee (1 Sat/vB) to a vending machine, the machine releases the product, and after some time that user performs a FullRBF changing the destination address to one of his own addresses?
I like the FullRBF feature to bump the fee. But i also see it as some kind of loophole for those some scenarios
So the question about this is: what do you think about FullRBF, does it allow double spend or not?
Here is the history, in my telegram group some users were talking about the RBF flag and how this allow you many things from bump the fee to increment the priority of your transaction, up to change the destination address and amounts, even return the balance minus fee to the source address or some other address under you control.
That is some OK in the most of the cases, but some user reach me privately to show me that is not necessary to have the RFB flag enable in a TX to be replaced or modified, this is a FullRBF
This user send me some dust amount to my address and some of his addresses. The original TX doesn’t have the RFB flag.
After some days of the TX waiting in mempool, he do a FullRBF twice, first of it was changing the destination address to another address and 8 minutes later a second FullRBF changing the destination once again to my address.
Images
Original TX
First FullRFB
Second FullRFB
Final TXID: 942a454340c5115d769a16aad85b85a19875bb2f5e544de1b776570b76294f62
If he hadn't performed that second FullRBF the dust amount would have ended in one of his addresses.
This makes me think about the post of satoshi about the vending machine.
What if a dishonest user sends a TX with low Fee (1 Sat/vB) to a vending machine, the machine releases the product, and after some time that user performs a FullRBF changing the destination address to one of his own addresses?
I like the FullRBF feature to bump the fee. But i also see it as some kind of loophole for those some scenarios
So the question about this is: what do you think about FullRBF, does it allow double spend or not?
Jump to: