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Topic: New Ixcoin fork -> I0coin - page 28. (Read 217119 times)

legendary
Activity: 1078
Merit: 1005
October 02, 2011, 08:39:40 PM
That sucks.  Sorry to hear that happened.  Neither of those chains had the time warp issue fixed did they?   Seems proof that needs to be fixed for any chain to be viable.  That and maybe also  merged mining.   I still think the idea of multiple chains is a good one in the long run.
Right, none had the time warp issue fixed. That definitely needs to be fixed on new chains to make it harder for >51% exploits. Such an attacker can still do whatever they want though, it just takes longer. Merged mining helps if it means that large number of users will start mining, making it more difficult for someone to get >51%. Or finding a trusted pool to 'centralize' things for a while until growth happens. I agree that multiple chains are still a good thing and I still hope to work on pools/exchanges as the technology improves.

I don't think people should just delete their ix/i0 coin wallets. It's possible someone could fix the isues, re-release a client and the coins remain valid. It just requires a committed and interested developer to push things forward.
legendary
Activity: 1078
Merit: 1005
October 02, 2011, 08:28:12 PM
The withdraw function for IOC is locked up incidentally. And it might be nice to turn off the fees charged for people to withdraw their remaining funds.
Withdrawals seem to be working - what do you mean they are locked up? The exchange still has to pay a withdrawal fee, especially as the wallet gets low on funds and hits fragmented addresses, so it doesn't make sense for it to turn it off and to incur an even greater loss than it already has.
sr. member
Activity: 280
Merit: 250
Firstbits: 12pqwk
October 02, 2011, 06:09:58 PM
glad i pulled the plug on this a while ago.
legendary
Activity: 1554
Merit: 1222
brb keeping up with the Kardashians
October 02, 2011, 12:07:55 PM
Some of them are 51% proof, like GG.
GG isn't in any real danger, even if it's not 51-proof.
sr. member
Activity: 574
Merit: 250
October 02, 2011, 11:46:17 AM
Once again there was another double spend attempt on the exchange. The exchange closed block chain processing when it happened. As a result of these continued attacks I've had to close the exchange. As it says from the main page:
Quote
Deposits for I0Coin and Bitcoin have been suspended, along with trading. Due to low network power of the I0Coin chain over the last couple of weeks there have been attempts to do 51% double spend attacks. The exchange would stop processing the block chain when these were detected and users will have noticed this, as deposits/withdrawals were suspended while I investigate. I'd then re-open with a higher deposit confirmation limit.

Some of the double spends were successful and a total of 198 bitcoins were successfully taken from the exchange. This involved anonymous users operating over TOR depositing I0Coins, trading for bitcoins, withdrawing the bitcoins and reversing the original deposit.

Due to this loss and the risk involved in continuing to operating an exchange for a chain which has, or can easily get, an attacker with >51% of the power, I've closed the exchange. Please withdraw all bitcoins and I0Coins before 31 Oct 2011 12:00 UTC. You can reach the exchange operator at [email protected] if you have any questions. It's unfortunate that the actions of a few have to stop the exchange usage for many honest users.
The basic approach from the attacking user was to deposit about 120,000 I0Coins, sell them, withdraw the BTC then invalidate/remove the original deposit. All the successful attacks (totaling 198 bitcoins or so) were done by a user operating over TOR. The user used accounts with names like:
* youdozeek
* mooncoin
* ploti
* adolf
* mojimcheo

The bitcoin addresses that were withdraw too were:

* 13kf6BR32STEuW7FSKVbM3WNUcF6nqcP3q
* 1H3Zx5a7fTWnpt8pfZnwekQzQYb4497vWb
* 1AKxgg8jESUvooeHtNvaSQYhbPCyv7wYZF
* 1G8XACmUXoTF3FaA5bATSD3fnSR2WQXVJH
* 1PoUHcuTqoSiKupYzkQUbPHE4SwTPBT9Ht

If you were one of these users and don't believe you did a deliberate double spend, please get in touch.

That sucks.  Sorry to hear that happened.  Neither of those chains had the time warp issue fixed did they?   Seems proof that needs to be fixed for any chain to be viable.  That and maybe also  merged mining.   I still think the idea of multiple chains is a good one in the long run.



sr. member
Activity: 574
Merit: 250
October 02, 2011, 11:41:55 AM
Is there no way to patch this problem once and for all? 
Stop alternate coins from starting? Smiley
Basically I'd expect this is happen to all alternate coins.
Some sooner than others.

Some of them are 51% proof, like GG.

GG is not 51% proof....  it is Time Warp bug fixed is all.
hero member
Activity: 756
Merit: 500
October 02, 2011, 09:08:01 AM
From what I was reading "Some of the double spends were successful and a total of 198 bitcoins were successfully taken from the exchange. This involved anonymous users operating over TOR depositing I0Coins, trading for bitcoins, withdrawing the bitcoins and reversing the original deposit."

that's quite a large theft. Nearly a grand.
sr. member
Activity: 574
Merit: 250
October 02, 2011, 09:00:25 AM
The withdraw function for IOC is locked up incidentally. And it might be nice to turn off the fees charged for people to withdraw their remaining funds.
hero member
Activity: 574
Merit: 513
October 02, 2011, 08:57:29 AM
Additionally with a working implementation to provide double spending abilities, it (the software) shall improve over time and be easily compatible with all p2p blockchains, including potentially even bitcoin blockchain if one or more individuals behind the implementation are able to accumulate enough processing power.
hero member
Activity: 756
Merit: 500
October 02, 2011, 08:22:18 AM
Maybe they should all patch and be like GG, it isn't safe to have to keep on having such 51% issues and stopping deposits and whatever.
legendary
Activity: 1526
Merit: 1002
Waves | 3PHMaGNeTJfqFfD4xuctgKdoxLX188QM8na
October 02, 2011, 08:01:16 AM
Is there no way to patch this problem once and for all? 
Stop alternate coins from starting? Smiley
Basically I'd expect this is happen to all alternate coins.
Some sooner than others.

Some of them are 51% proof, like GG.
legendary
Activity: 4592
Merit: 1851
Linux since 1997 RedHat 4
October 02, 2011, 07:42:06 AM
Is there no way to patch this problem once and for all? 
Stop alternate coins from starting? Smiley
Basically I'd expect this is happen to all alternate coins.
Some sooner than others.
hero member
Activity: 756
Merit: 500
October 02, 2011, 06:33:33 AM
Is there no way to patch this problem once and for all? 
legendary
Activity: 1078
Merit: 1005
October 02, 2011, 06:11:43 AM
Once again there was another double spend attempt on the exchange. The exchange closed block chain processing when it happened. As a result of these continued attacks I've had to close the exchange. As it says from the main page:
Quote
Deposits for I0Coin and Bitcoin have been suspended, along with trading. Due to low network power of the I0Coin chain over the last couple of weeks there have been attempts to do 51% double spend attacks. The exchange would stop processing the block chain when these were detected and users will have noticed this, as deposits/withdrawals were suspended while I investigate. I'd then re-open with a higher deposit confirmation limit.

Some of the double spends were successful and a total of 198 bitcoins were successfully taken from the exchange. This involved anonymous users operating over TOR depositing I0Coins, trading for bitcoins, withdrawing the bitcoins and reversing the original deposit.

Due to this loss and the risk involved in continuing to operating an exchange for a chain which has, or can easily get, an attacker with >51% of the power, I've closed the exchange. Please withdraw all bitcoins and I0Coins before 31 Oct 2011 12:00 UTC. You can reach the exchange operator at [email protected] if you have any questions. It's unfortunate that the actions of a few have to stop the exchange usage for many honest users.
The basic approach from the attacking user was to deposit about 120,000 I0Coins, sell them, withdraw the BTC then invalidate/remove the original deposit. All the successful attacks (totaling 198 bitcoins or so) were done by a user operating over TOR. The user used accounts with names like:
* youdozeek
* mooncoin
* ploti
* adolf
* mojimcheo

The bitcoin addresses that were withdraw too were:

* 13kf6BR32STEuW7FSKVbM3WNUcF6nqcP3q
* 1H3Zx5a7fTWnpt8pfZnwekQzQYb4497vWb
* 1AKxgg8jESUvooeHtNvaSQYhbPCyv7wYZF
* 1G8XACmUXoTF3FaA5bATSD3fnSR2WQXVJH
* 1PoUHcuTqoSiKupYzkQUbPHE4SwTPBT9Ht

If you were one of these users and don't believe you did a deliberate double spend, please get in touch.
newbie
Activity: 47
Merit: 0
October 02, 2011, 04:54:46 AM
Seems we have another lock up happening at block 58557.

Sure looks like it. I wish these things would be announced by the exchange.
hero member
Activity: 896
Merit: 1000
Seal Cub Clubbing Club
October 01, 2011, 06:49:11 PM
I tried several deposits of i0 and ixcoins this morning.  The deposit of ixcoins directly from my wallet worked ok, but the deposits from my pool seem to be hung up.  Using block explorer they say "Not yet redeemed".  I don't get it.
sr. member
Activity: 574
Merit: 250
October 01, 2011, 02:53:50 PM
Seems we have another lock up happening at block 58557.
legendary
Activity: 1078
Merit: 1005
September 28, 2011, 05:47:16 PM
Another block chain rollback was attempted and the exchange stopped processing blocks until I look into it.
full member
Activity: 135
Merit: 100
September 28, 2011, 04:57:30 PM
I can't even login to i0exchange anymore. Whats going on?
sr. member
Activity: 574
Merit: 250
September 28, 2011, 01:54:36 PM
Another one that has been locked on block 54482 for the past 7 hours or so. Blocks keep marching onward, but the exchange is hung.
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