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Other => MultiBit => Topic started by: Hello Im Me on October 04, 2015, 07:01:59 PM



Title: [Multibit] My wallet just sent twice to the same address
Post by: Hello Im Me on October 04, 2015, 07:01:59 PM
I have no clue how this happend or what to do.
I searched my address on blockchain and this was above my address with red font "Warning! this bitcoin address contains transactions which may be double spends. You should be extremely careful when trusting any transactions to or from this address"

What should/can i do?? The amount was really low, but i'm really scared to send money to anyone now  :o
And can anyone please explain to me what double spending is?


Title: Re: [Multibit] My wallet just sent twice to the same address
Post by: Omega.SportSciencie on October 04, 2015, 07:09:55 PM
I have no clue how this happend or what to do.
I searched my address on blockchain and this was above my address with red font "Warning! this bitcoin address contains transactions which may be double spends. You should be extremely careful when trusting any transactions to or from this address"

What should/can i do?? The amount was really low, but i'm really scared to send money to anyone now  :o
And can anyone please explain to me what double spending is?

Most of those double spent warnings are not coming from real double spents but from bugged trnsactions that look like double spends, they are a pair of txs sending the same amount of btcs on which the first one gets bugged and it will never be confirmed or accepted by the network.. so your balance will stay the same without any change.


Title: Re: [Multibit] My wallet just sent twice to the same address
Post by: unholycactus on October 04, 2015, 07:12:09 PM
https://bitcointalk.org/index.php?topic=1198032.0
Read the thread linked above.

What should happen is that one of your transactions will be confirmed and they other one should rejected.


Title: Re: [Multibit] My wallet just sent twice to the same address
Post by: achow101 on October 04, 2015, 07:13:18 PM
I have no clue how this happend or what to do.
I searched my address on blockchain and this was above my address with red font "Warning! this bitcoin address contains transactions which may be double spends. You should be extremely careful when trusting any transactions to or from this address"

What should/can i do?? The amount was really low, but i'm really scared to send money to anyone now  :o
And can anyone please explain to me what double spending is?
There appears to be an attack on the network that is exploiting transaction malleability. What is happening is that someone is modifying transactions so that the id changes but the actual payments stay the same. This is what makes it look like there is a double spend because the same inputs are spent but the txids are different. Don't worry, the warning should go away after one of those transactions (both spend to the same place) is confirmed. Just don't send transactions that spend unconfirmed inputs.


Title: Re: [Multibit] My wallet just sent twice to the same address
Post by: Hello Im Me on October 04, 2015, 07:41:08 PM
Thanks for the answers, after some time 1 of the transactions disappeared and everything went back to normal :)


Title: Re: [Multibit] My wallet just sent twice to the same address
Post by: shorena on October 04, 2015, 07:58:25 PM
Thanks for the answers, after some time 1 of the transactions disappeared and everything went back to normal :)

I am curious about this. Did you do anything? Reset the blockchain data on multibit classic or "repair" on multibit hd? Do you use HD or classic?


Title: Re: [Multibit] My wallet just sent twice to the same address
Post by: Hello Im Me on October 04, 2015, 08:38:21 PM
Thanks for the answers, after some time 1 of the transactions disappeared and everything went back to normal :)

I am curious about this. Did you do anything? Reset the blockchain data on multibit classic or "repair" on multibit hd? Do you use HD or classic?

The message is still on the blockchain, but everything has resolved around the wallet issue. I have no clue what the red text on blockchain really mean. But my guess is that it will disappear soon too.