Topic: Double spend? of .1 still not confirmed after 3 days (Read 1271 times)

ok thanks for taking the time to help me with this, I really appreciate it!

namaste

The .1 will still be available. Blockchain.info will just show your balance as negative until they drop the unconfirmed transaction

reply it did subtract the .1 from my stated balance... so when i get to 0 will there still be a withdrawable .1 ? Or what do I need to do to get that .1 available to me?

The 0.1 you wanted to send was sent. And if your balance deducted 0.2 (which it probably did) then it is wrong.

So the .1 is still in my wallet? And my stated balance is incorrect?

Opel everything is explained above. Let me just add that you need to change a wallet. Blockchain.info wallet is the most prone to these malleability attacks and if you have used some other wallet, you wouldn't have this issue at the moment.

Change a wallet and stay away from online wallets if you possibly can.

Let me give it a shot at explaining what happened.

You create a TX (A) that send 0.1 BTC to someone else. After you broadcasted it to the network. Someone else - lets call her Eve - modified your transaction slightly. Eve made a copy of the TX and gave it a different ID. Instead of A there is now also a TX A' that uses the same coins and sends them to the same person, but has a differnet name (TX ID)

A or A' can confirm, but never both, that would be a true double spend. Bitcoin was design to avoid true double spends, they can at best only exist in an unconfirmed state. This is the very basis of bitcoin. Your wallet provider (blockchain.info I assume from the above - B for short) however has to deal with unconfirmed transactions somehow to update your balance before a TX is confirmed. B has to handle A and A' and does so in the worst possible way. B handles A and A' as entirely different transactions that use entirely different coins.

That is why your balance is shown wrong, while on the blockchain you did not lose coins and the person you send them to received them without issues. Other wallets handle this better, e.g. I currently have a modified TX in my bitcoin core wallet. It shows up under the transactions as "conflicted" and is not part of the balance (not even of the unconfirmed). Its a bit annoying, but I can remove it myself with a simple command. Other wallets will have to update in order to deal with this somehow.

All you can do now is complain to blockchain.info and consider switching to a different wallet. Not because your wallet was compromised, but because blockchain.info is offering bad service.

it's not like you spent it twice, it's just that one can be called as a "fake spent" it has no value, it will sit there like a dust

i was in the same boat with a payment from a faucet, not a dust payment, but a reasonable payment, it come two time, but the first was with the "?" and remained there forever

No, as i'm saying, ignore them, they don't change anything. You sent the same coins twice to the same person. Not different coins each time. You did not spend 0.2. You only spent 0.1. Just ignore the malleability'd double spend. In all cause an effect, you can safely pretend they don't exist, because they don't actually do anything.

Just wait a few days and the transaction should disappear. Blockchain.info will automatically remove the transaction from their database when it remains unconfirmed for too long and that it is also a double spend.

No, that is not true. You did not spend twice as much, your spent exactly the same amount. One of the transactions is useful, it is confirmed and can be didn't fun. The other is completely and absolutely useless. It is unconfirmed and will remain that way forever. Your balance does not change except for the amount you wanted to spend.

Blockchain

It's not like it never happened because my coins are gone and I spent twice as much for something.

No. Just no. Ignore ^ comment. The malleability attacks has nothing to do with whether you're personally compromised or not. Your wallet is fine, its something to do that is completely unrelated.

https://www.cryptocoinsnews.com/bitcoin-attack-coinkite-reports-malleability-attack-urges-caution/
Etc, its not really related to you. It doesn't really change anything.

hemmm maybe yess

it is not done manually, all unconfirmed transactions will be dropped automatically by the memory pool if still not confirmed for 2-3 days AFAIK

Blockchain staff had to check the fake txid manuallyfgoing through all transactions and. Delete the record so it does takes time.. Mine take around 3-4 days lol

Just ignore the malleability attack, it doesn't really change anything. You sent the same coins twice to the same person, the second transaction confirmed, so he still got the money. All in all, just ignore the double spend, its like it never happened.

Technically, that person does, but that transaction is useless. It cannot be spent from and just takes up space. Everything is exactly how you intended it, except that there happens to be an extra transaction floating around. You can get rid of it from your wallet, but we will need to know what wallet you are using.

I don't know? What should I do? Why am I seeing this? Does this happen often?  Should I shut down this wallet and start a new one?