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Author Topic: Swedish exchange FYBSE halts withdrawals  (Read 707 times)
Joohansson (OP)
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February 12, 2014, 06:24:59 AM
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From the site, Feb 11:
Yesterday, MtGox brought to the limelight an old Bitcoin protocol flaw which some of their users were exploiting to trick MtGox into crediting Bitcoins after having withdrawn them. The flaw is known as Transaction Malleability. FYB-SG is not affected by this issue.

Unfortunately, because of this flaw being brought to the limelight, a douchebag bot has appeared on the Bitcoin network actively mutating any transaction it can. This has the effect of "confusing/tricking" the full Bitcoin clients which form the backbone of the Bitcoin network to incorrectly report wallet balances which can prevent wallets from sending out coins because the mutated transactions will cause the client to debit it's balance twice, once when sending the original transaction and once when the mutated transaction gets included in a block. Furthermore, the bitcoin clients will create invalid transactions as they try to spend their original unmutated outputs, which will never be accepted on the blockchain.

As for what this means for you,
1)Your Coins are safe and not lost. The problem only confuses the Bitcoin software which is preventing normal operation.
2)Withdrawals are halted until this issue is fixed in the main client by Bitcoin devs, issue is trivial and should be fixed soon.
3)Withdrawals in the previous 24-36hrs may give invalid transaction reference urls, but the coins should still reach your address.
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