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Topic: Double Spend on Pocket Dice - page 2. (Read 2751 times)

sr. member
Activity: 434
Merit: 250
July 20, 2015, 10:43:51 PM
#8
I`m pretty new to spotting a double spent address or how it works.

Any chance to screen cap how it looks like? since anyone can get pm`d by him or does future business w. that person.
hero member
Activity: 504
Merit: 500
July 20, 2015, 09:44:32 PM
#7
Hi everyone!

Today we'd like to talk about double-spending.

We've had a player named yakuza699 – he's got the same username on bitcointalk and is actually a Hero member here, which means he's a respected part of the community. Here is a link to his profile here: https://bitcointalksearch.org/user/yakuza699-136722.

He's been playing Pocket Dice for a while now using the same strategy over and over: he makes a large deposit, places a couple of low-risk ALL IN bets, and then withdraws. All his game sessions have been profitable for him though yesterday he returned to Pocket Dice, deposited 71.38 BTC and lost them all. This happens sometimes as this is the game of chance. What happened next was he double-spent his deposit transaction.

So why are we writing all this? Just to say you all should beware of any kind of cooperation with yakuza699. Moreover, you should never seriously rely on user's rating at Bitcointalk.

Has anyone of you ever had any cooperation with yakuza699? did he also double spend in your web services?
Any ideas on how to solve this will be aprreciated.

why such a gambling site accepts instant deposit since double spend attacks isn't new in the BTC world? can you give more proof that yakuza699 in your site is the same yakuza699 here at BCTalk?
legendary
Activity: 1288
Merit: 1043
:^)
July 20, 2015, 09:06:51 PM
#6
How did he double spend? Your system is vulnerable?

Post this on the scam accusations section with your evidence.

my guess is that he sent a 0 fee deposit to pocket dice then broadcast a second transaction with a fee to get the network to forget about the first transaction.

1st question, why do you accept double spend transactions? Secondly, could you provide the txid's of the transactions in question, and other evidence to link that profile to the person you are claiming scammed you?

question is, why do they accept 0 fee deposits? accepting them is ok, but they should wait for 1 confirmation in the case the deposit transaction has no fee as those are vulnerable to double spending. other than that, we do need proof the account on your site that initiated this double spend is indeed yakuza699, 71+ BTC is not a small amount.
copper member
Activity: 2996
Merit: 2374
July 20, 2015, 08:59:37 PM
#5
1st question, why do you accept double spend transactions? Secondly, could you provide the txid's of the transactions in question, and other evidence to link that profile to the person you are claiming scammed you?
hero member
Activity: 602
Merit: 500
July 20, 2015, 07:04:55 PM
#4
Yakuza699 also tried sending a double-spend to repay his loan..                                               

Repaid 0.43(+0.01) damn it took longer than I fault.
https://blockchain.info/tx/c985bc196067e84ac11f595dc7d25f7d342e009dfbd1b9433804d07950ff996d
EDIT. If this tx doesn't confirm ask me to resend!

That's not very nice Sad now I have the tag: 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.
Don't worry it will vanish after 2-3 days plus it's only on blockchain.info block explorer.

The transaction has failed please resend it.
It looks like yakuza699 actually double spent the transaction. I would be weary about accept 0/unconfirmed transactions from this person.  
full member
Activity: 182
Merit: 100
July 20, 2015, 05:51:42 PM
#3
How did he double spend? Your system is vulnerable?

Post this on the scam accusations section with your evidence.
hero member
Activity: 633
Merit: 591
July 20, 2015, 02:34:54 PM
#2
Today we'd like to talk about double-spending.
[...]
Any ideas on how to solve this will be aprreciated.

Simple. Do not provide services that are vulnerable to double-spending.
sr. member
Activity: 342
Merit: 250
July 20, 2015, 10:16:43 AM
#1
Hi everyone!

Today we'd like to talk about double-spending.

We've had a player named yakuza699 – he's got the same username on bitcointalk and is actually a Hero member here, which means he's a respected part of the community. Here is a link to his profile here: https://bitcointalksearch.org/user/yakuza699-136722.

He's been playing Pocket Dice for a while now using the same strategy over and over: he makes a large deposit, places a couple of low-risk ALL IN bets, and then withdraws. All his game sessions have been profitable for him though yesterday he returned to Pocket Dice, deposited 71.38 BTC and lost them all. This happens sometimes as this is the game of chance. What happened next was he double-spent his deposit transaction.

So why are we writing all this? Just to say you all should beware of any kind of cooperation with yakuza699. Moreover, you should never seriously rely on user's rating at Bitcointalk.

Has anyone of you ever had any cooperation with yakuza699? did he also double spend in your web services?
Any ideas on how to solve this will be aprreciated.
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