Topic: [RESOLVED] Dangerous situation with unconfirmed transactions! - page 2. (Read 2801 times)

All followed transactions will become orphans and will non confirm forever

It is not a bug. It is a feature of bitcoin protocol.

No. But I can "push" this transaction to a pool an it will be mined in reasonable time.
And all followed txs wil be mined also

I also can try to push malled transaction (this case is not guaranteed). And all followed transactions will be invalid and not mined

OK, I will not do anything. Your choice.

As i think the problem lies elsewhere.
What happens if owner of address 1BRiSksEx7wioajqneij9Q6cvZFRDBUwgW will want to make double spending now?
It can be done very easy. Enough install secret key in other wallet and make transaction with non zero fee. Miners will take new transactions quickly and many many other transactions to be depend from this will collapse...

Are you miner?

P.S. I don't want to resolve problem by manual methods.
No, please don't do something. I want to see how this problem will be resolved without manual actions.

Would you like me to fix problem with stuck tx https://blockchain.info/tx/7f6b37f6190a89b6f5e59329d7544f9627b6fd6e3c505d3058922ecce7a31669 ?

I am not owner of one of these addresses, but I can help

I think there behind many persons. And as i understand they only use last freshed wallet software.
My reseller uses blockchain.info online wallet as i think (he can attach comments to transactions - this feature only for online blockchain.info wallets). So first bad bidder - online blockchain.info wallet.
I saw what mobile wallets (Bitcoin Wallet for Android) can spent (create & broadcast transaction) money from unspent outputs of other transactions.
It normal behaviour if i have Bitcoin Wallet and do some serial payments.

In anyway this situation undermines trust to the Bitcoin for users.
I know how the Bitcoin works and i can understand and describe problem, i can wait and post here messages.
But if a payment will be got by other not-well-known bitcoin user?

I think this problem from miner software. The miner software could be take this zero-fee transaction as priority because many other transactions are based from it (with non zero fee!). As do you think?

"it came back to me" is how blockchain.info handles it. If you use bitcoin core it will broadcast the transcation until it gets confirmed. Given enough time its priority will be high enough and the TX will get confirmed. 1 BTC and 1 day waiting is fine for a feeless TX. In this case a little over 1000 days should be enough.

This is not practical granted, but I dont see a reason for panic as the OP seems to. Just dont accept a TX as paid unless there is a confirmation (more than 1 for higher values TX). If this would be a local cash deal, Id be gone with my money allready and would never trade with that person again.


Edit: I wonder if its something like this [1]

[1] https://bitcointalksearch.org/topic/why-first-instead-of-second-854655

Transactions without fees get confirmed all the time, they just take longer.
Idiots like the person behind this are the reason why you should never accept a TX without at least X confirmations where X is > 0.

They might confirm within a week or two.

Hi,

I am waiting money from this transaction

https://blockchain.info/tx/7a61556699cf0fa79ce974966f9692cf0dc9a0fc1937ee08e9f1857e3e8cfc15

I got this money as payment
But if you will see - there is (U) output

The reseller with address 1JHif33UQGNkApimhtXaxvNJvwaULLZT1v paid to me. I work with them and they are ok.
But i am sure that they uses blockchain.info wallet and reuse address (i think same because they can comment transactions in blockchain.info)

But there very very dangerous situation.
There is very long chain from unconfirmed transactions:

https://blockchain.info/tx-index/69901819/0
https://blockchain.info/tx-index/69903207/1
https://blockchain.info/tx-index/69900458/1
https://blockchain.info/tx-index/69899816/1
https://blockchain.info/tx-index/69897027/1
https://blockchain.info/tx-index/69898025/1
https://blockchain.info/tx-index/69895266/1
https://blockchain.info/tx-index/69893186/1
https://blockchain.info/tx-index/69893825/1
https://blockchain.info/tx-index/69889516/1
https://blockchain.info/tx-index/69888701/1
https://blockchain.info/tx-index/69888152/1
https://blockchain.info/tx-index/69888148/0
https://blockchain.info/tx-index/69887337/1
https://blockchain.info/tx-index/69887286/0
https://blockchain.info/tx-index/69888019/1
https://blockchain.info/tx-index/69887997/0
https://blockchain.info/tx-index/69887218/0
https://blockchain.info/tx-index/69888019/1
https://blockchain.info/tx-index/69888019/0

But the root of all problems is this transaction:

https://blockchain.info/tx-index/69887997/0

It was sent (6 hours ago!) with very small value with zero comissions and has small value (0.0088)

But somebodies after these transactions spent these money by sending next transactions in bitcoin pool.
Miners don't take this zero-fee transaction for block
But from this small transaction many many other transactions are depended (with sums more more bigger than root transaction)!

If owner of this spent money (https://blockchain.info/tx-index/69887997/0) will want to make now double-spending (now with non-zero fee for example) - IT WILL BE BOOM! It's very easy to make as 'sweep money' for example, if address is cool storage for example.

My reseller thinks that i got money. They pay through blockchain.info wallet.
It's not criminal - to send chain of transactions in pool before includeing these in block.
This allows you to make multiple payments from a mobile wallet without waiting to confirmation.

But if it depends from multiply wallets and resellers - it's very dangerous!

I think a decision may be depend only from miners. But theirs software don't take zero-fee transactions a long time.
Now my money and other ones depend from one very small transaction! And i could not to do something against from this

Partly, i think, it's problem is caused by improving wallet software - to allow spend money from transaction which are in only current pool not in block. It would work fine if only not wishes of miners to take transactions with non-zero fee.