How to do Double spend - page 2. | Bitcointalksearch.org

pooya87

legendary

Activity: 3472

Merit: 10611

Quote from: ariellee on August 02, 2019, 07:57:04 PM

what do you mean by sending the same transaction twice ?

Quote from: ariellee on August 02, 2019, 08:40:16 PM

What do you mean by pay the change address?

based on your comments here, it seems to me like you may not know the basics of how bitcoin works. maybe it is best if you start there. read what is a transaction output, what is a change address, how transactions work, how the network works,... and then start looking for how to double spend! you can't jump in to the end.

TimeBits

member

Activity: 224

Merit: 62

Quote from: ariellee on August 02, 2019, 07:35:10 PM

Hi, is anybody there who can please explain me how to do double spend ?
I heard that is was possible to make it on coinb.in but I don’t really know it works. I am only asking it for an educational purpose. Please please please
If my post is in the wrong section please tell me.
Thank you

You don`t double spend.

If you want to double spend, the first thing you do is find the tallest building, now jump off it!

ariellee

newbie

Activity: 5

Merit: 0

Quote from: figmentofmyass on August 02, 2019, 08:15:26 PM

Quote from: ariellee on August 02, 2019, 07:35:10 PM

Hi, is anybody there who can please explain me how to do double spend ?
I heard that is was possible to make it on coinb.in but I don’t really know it works. I am only asking it for an educational purpose. Please please please
If my post is in the wrong section please tell me.
Thank you

why, so you can fool someone into accepting a zero-confirmation transaction, only to send the funds back to yourself? Tongue

anyway, the easiest way is to use something like double-spend.py---see here: https://bitcoin.stackexchange.com/a/32347

Quote

Basic usage:

./double-spend.py

Creates two transactions in succession. The first pays the specified amount to the specified address. The second double-spends that transaction with a transaction with higher fees, paying only the change address. In addition you can optionally specify that the first transaction additional OP-RETURN, multisig, and "blacklisted" address outputs. Some miners won't accept transactions with these output types; those miners will accept the second double-spend transaction, helping you achieve a succesful double-spend.

What do you mean by pay the change address? Can I have a live demo ? The tools isn’t working well according to the comments.

Thanks

dkbit98

legendary

Activity: 2212

Merit: 7064

Quote from: ariellee on August 02, 2019, 07:57:04 PM

Quote from: dkbit98 on August 02, 2019, 07:51:19 PM

Quote from: ariellee on August 02, 2019, 07:35:10 PM

Hi, is anybody there who can please explain me how to do double spend ?
I heard that is was possible to make it on coinb.in but I don’t really know it works. I am only asking it for an educational purpose. Please please please
If my post is in the wrong section please tell me.
Thank you

Why would you want to so double spend?
Not sure it will work anyway, depending on mempool and other things,
but it is 2 exact same transactions sent from same wallet sent to some other wallet.

Again, DO NOT experiment with double spend!

Hi please don’t worry for me I just want to know how to do it. And also what do you mean by sending the same transaction twice ?
I want to know how to send bitcoin and make it back to my wallet. I think it’s still possible because somebody that I know did it but he does not want to show it to me that’s why I’m coming here to ask it to you.
Please help me

no comment

figmentofmyass

legendary

Activity: 1652

Merit: 1483

Quote from: ariellee on August 02, 2019, 07:35:10 PM

Hi, is anybody there who can please explain me how to do double spend ?
I heard that is was possible to make it on coinb.in but I don’t really know it works. I am only asking it for an educational purpose. Please please please
If my post is in the wrong section please tell me.
Thank you

why, so you can fool someone into accepting a zero-confirmation transaction, only to send the funds back to yourself? Tongue

anyway, the easiest way is to use something like double-spend.py---see here: https://bitcoin.stackexchange.com/a/32347

Quote

Basic usage:

./double-spend.py

Creates two transactions in succession. The first pays the specified amount to the specified address. The second double-spends that transaction with a transaction with higher fees, paying only the change address. In addition you can optionally specify that the first transaction additional OP-RETURN, multisig, and "blacklisted" address outputs. Some miners won't accept transactions with these output types; those miners will accept the second double-spend transaction, helping you achieve a succesful double-spend.

ariellee

newbie

Activity: 5

Merit: 0

Quote from: dkbit98 on August 02, 2019, 07:51:19 PM

Quote from: ariellee on August 02, 2019, 07:35:10 PM

Hi, is anybody there who can please explain me how to do double spend ?
I heard that is was possible to make it on coinb.in but I don’t really know it works. I am only asking it for an educational purpose. Please please please
If my post is in the wrong section please tell me.
Thank you

Why would you want to so double spend?
Not sure it will work anyway, depending on mempool and other things,
but it is 2 exact same transactions sent from same wallet sent to some other wallet.

Again, DO NOT experiment with double spend!

Hi please don’t worry for me I just want to know how to do it. And also what do you mean by sending the same transaction twice ?
I want to know how to send bitcoin and make it back to my wallet. I think it’s still possible because somebody that I know did it but he does not want to show it to me that’s why I’m coming here to ask it to you.
Please help me

dkbit98

legendary

Activity: 2212

Merit: 7064

Quote from: ariellee on August 02, 2019, 07:35:10 PM

Hi, is anybody there who can please explain me how to do double spend ?
I heard that is was possible to make it on coinb.in but I don’t really know it works. I am only asking it for an educational purpose. Please please please
If my post is in the wrong section please tell me.
Thank you

Why would you want to so double spend?
Not sure it will work anyway, depending on mempool and other things,
but it is 2 exact same transactions sfrom same wallet sent to some other wallet.

Again, DO NOT experiment with double spend!

ariellee

newbie

Activity: 5

Merit: 0

Hi, is anybody there who can please explain me how to do double spend ?
I heard that is was possible to make it on coinb.in but I don’t really know it works. I am only asking it for an educational purpose. Please please please
If my post is in the wrong section please tell me.
Thank you

Topic: How to do Double spend - page 2. (Read 438 times)