bearex (OP)
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October 24, 2015, 11:36:43 AM |
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How much does it costs, for an attacker to double spend a coin at:
0 confirmations 1 confirmation ... ?
Trying to get some borders for buyers to wait, so the double spend doesnt happen.
Thanks
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redsn0w
Legendary
Offline
Activity: 1778
Merit: 1043
#Free market
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October 24, 2015, 11:45:17 AM |
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How much does it costs, for an attacker to double spend a coin at:
0 confirmations 1 confirmation ... ?
Trying to get some borders for buyers to wait, so the double spend doesnt happen.
Thanks
To double spend (send two times the 'same' TX) you have only to use a custom client (the RbF -replace by fee | bitcoinCore). However, you can't double spend a tx once it has 1 or more confirmation.
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bearex (OP)
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October 24, 2015, 11:48:30 AM |
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So you can double spend a 0 confirmation transaction with no cost?
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redsn0w
Legendary
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Activity: 1778
Merit: 1043
#Free market
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October 24, 2015, 11:52:37 AM |
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So you can double spend a 0 confirmation transaction with no cost? You have to put & spend the correct fee(s), and choose the 'right' inputs.
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bearex (OP)
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October 24, 2015, 11:57:07 AM |
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Is this something that could be possible when a person is buying goods <100$? In a physical store.
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achow101
Moderator
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Activity: 3500
Merit: 6833
Just writing some code
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October 24, 2015, 01:39:24 PM |
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Is this something that could be possible when a person is buying goods <100$? In a physical store.
Theoretically, yes. They would need custom software on their mobile device that would allow them to spend the same inputs again and with a different fee.
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shorena
Copper Member
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Activity: 1498
Merit: 1530
No I dont escrow anymore.
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October 24, 2015, 04:51:52 PM |
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Is this something that could be possible when a person is buying goods <100$? In a physical store.
Its possible, but you should read this thread -> https://bitcointalk.org/index.php?topic=1197567.0
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Im not really here, its just your imagination.
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Hugroll
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October 24, 2015, 08:26:55 PM |
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How much does it costs, for an attacker to double spend a coin at:
0 confirmations 1 confirmation ... ?
Trying to get some borders for buyers to wait, so the double spend doesnt happen.
Thanks
To double spend (send two times the 'same' TX) you have only to use a custom client (the RbF -replace by fee | bitcoinCore). However, you can't double spend a tx once it has 1 or more confirmation. i remember seeing this video on youtube that explained that double spending can have more than 1 confirmation but the two tx would have to be confirmed at the same time? but the chances are very low of that happening. Does it work like that or if you double spend theres a 0% chance of both of them getting 2 confirmations each?
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redsn0w
Legendary
Offline
Activity: 1778
Merit: 1043
#Free market
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October 24, 2015, 09:04:19 PM |
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How much does it costs, for an attacker to double spend a coin at:
0 confirmations 1 confirmation ... ?
Trying to get some borders for buyers to wait, so the double spend doesnt happen.
Thanks
To double spend (send two times the 'same' TX) you have only to use a custom client (the RbF -replace by fee | bitcoinCore). However, you can't double spend a tx once it has 1 or more confirmation. i remember seeing this video on youtube that explained that double spending can have more than 1 confirmation but the two tx would have to be confirmed at the same time? but the chances are very low of that happening. Does it work like that or if you double spend theres a 0% chance of both of them getting 2 confirmations each? It is impossible to get confirmed the 2 transactions (double spend). Because for a successful double spend one of the two tx must not be confirmed, this is how it works.
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amaclin
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Activity: 1260
Merit: 1019
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October 25, 2015, 12:21:16 PM |
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However, you can't double spend a tx once it has 1 or more confirmation.
wrong
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redsn0w
Legendary
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Activity: 1778
Merit: 1043
#Free market
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October 25, 2015, 12:26:39 PM |
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However, you can't double spend a tx once it has 1 or more confirmation.
wrong Can you make a test? This is my address bitcoin 1GkGt3218AM8FU7ZGDCeZS4LWZR8xeZcjf send me a PM once you'll start. Good luck !
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amaclin
Legendary
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Activity: 1260
Merit: 1019
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October 25, 2015, 01:34:35 PM |
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Can you make a test? This is my address bitcoin 1GkGt3218AM8FU7ZGDCeZS4LWZR8xeZcjf send me a PM once you'll start. Not today, man. On mainnet. We can test this on testnet or on altcoin network.
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redsn0w
Legendary
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Activity: 1778
Merit: 1043
#Free market
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October 25, 2015, 01:37:05 PM |
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Can you make a test? This is my address bitcoin 1GkGt3218AM8FU7ZGDCeZS4LWZR8xeZcjf send me a PM once you'll start. Not today, man. On mainnet. We can test this on testnet or on altcoin network. Why not the real BTC blockchain?
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yakuza699
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October 25, 2015, 01:46:14 PM |
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Can you make a test? This is my address bitcoin 1GkGt3218AM8FU7ZGDCeZS4LWZR8xeZcjf send me a PM once you'll start. Not today, man. On mainnet. We can test this on testnet or on altcoin network. Do it on litecoin/dogecoin network.Are you going to orphan block that included your transaction?
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criptix
Legendary
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Activity: 2464
Merit: 1145
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October 25, 2015, 02:04:37 PM |
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Can you make a test? This is my address bitcoin 1GkGt3218AM8FU7ZGDCeZS4LWZR8xeZcjf send me a PM once you'll start. Not today, man. On mainnet. We can test this on testnet or on altcoin network. Why not the real BTC blockchain? because he cant.
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redsn0w
Legendary
Offline
Activity: 1778
Merit: 1043
#Free market
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October 25, 2015, 02:21:55 PM |
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Can you make a test? This is my address bitcoin 1GkGt3218AM8FU7ZGDCeZS4LWZR8xeZcjf send me a PM once you'll start. Not today, man. On mainnet. We can test this on testnet or on altcoin network. Why not the real BTC blockchain? because he cant. He said I'm wrong, but you can't double spend a 1 conf. BTC transaction. It's real impossible .
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criptix
Legendary
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Activity: 2464
Merit: 1145
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October 25, 2015, 02:23:56 PM |
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Can you make a test? This is my address bitcoin 1GkGt3218AM8FU7ZGDCeZS4LWZR8xeZcjf send me a PM once you'll start. Not today, man. On mainnet. We can test this on testnet or on altcoin network. Why not the real BTC blockchain? because he cant. He said I'm wrong, but you can't double spend a 1 conf. BTC transaction. It's real impossible . you would need to fork the blockchain. i'm sure he cant do it.
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amaclin
Legendary
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Activity: 1260
Merit: 1019
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October 25, 2015, 02:46:37 PM |
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you would need to fork the blockchain. i'm sure he cant do it. I can not do it today on mainnet. I haven't said that it is impossible always.
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yakuza699
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October 25, 2015, 02:51:47 PM Last edit: October 25, 2015, 03:03:30 PM by yakuza699 |
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you would need to fork the blockchain. i'm sure he cant do it. I can not do it today on mainnet. I haven't said that it is impossible always. All you need is just a simple orphan block.
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redsn0w
Legendary
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Activity: 1778
Merit: 1043
#Free market
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October 25, 2015, 03:03:54 PM |
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you would need to fork the blockchain. i'm sure he cant do it. I can not do it today on mainnet. I haven't said that it is impossible always. Maybe tomorrow?
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