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Author Topic: Lost my bitcoins after upgrade to 0.8 wallet  (Read 2327 times)
marra (OP)
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March 21, 2013, 02:59:19 PM
 #1

Hello,

Yesterday after upgrade, one of my wallets was emptied. 9btcs were lost. I have noticed that the number of transactions that were there before were reduced from 450 to 220 and that some of transactions we're doubled? The ones that went to satoshidice.

Wallet wasn't encrypted, I know were I went wrong, but I'm just wondering what happened? I'm willing to submit reports of double transactions.

Thanks beforehand.

$1 = 1 satoshi  ☰☱☲☳☷☷☳☲☰☰☱☲☳☷☳☲☰☰☱☲☲☳☷☷☳☲☳☱☷☷☳☲☰☰☰☰☲☳☳
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marra (OP)
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March 21, 2013, 03:02:47 PM
 #2

The OS is Lion, and antivirus didn't report anything suspicious.

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March 21, 2013, 03:02:59 PM
 #3

do a re-scan?

In the Beginning there was CPU , then GPU , then FPGA then ASIC, what next I hear to ask ....

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marra (OP)
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March 21, 2013, 03:04:13 PM
 #4

do a re-scan?

Nothing... ClamXav antv...

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March 21, 2013, 03:08:18 PM
 #5

do a re-scan?

Nothing... ClamXav antv...

He means start the client with -rescan so it re-balances your account according to the block chain.
marra (OP)
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March 21, 2013, 03:19:18 PM
 #6

I have uploaded the wallet.dat to blockchain. It's empty.

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March 21, 2013, 03:21:46 PM
 #7

do you have a older copy of your wallet? What OS are you on?
marra (OP)
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March 21, 2013, 03:22:45 PM
 #8

Yes, I do have an old wallet.dat, Lion Mac.

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marra (OP)
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March 21, 2013, 03:23:58 PM
Last edit: March 21, 2013, 03:37:19 PM by marra
 #9

I understand that the unprotected wallet can be emptied, but how can the blockchain be manipulated?

Transaction detail popup says I sent btcs to 2 address in one transaction...

$1 = 1 satoshi  ☰☱☲☳☷☷☳☲☰☰☱☲☳☷☳☲☰☰☱☲☲☳☷☷☳☲☳☱☷☷☳☲☰☰☰☰☲☳☳
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marra (OP)
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March 21, 2013, 03:44:14 PM
 #10

I would feel ok if I just saw that someone gained control over my unprotected wallet and sent btcs to another address, but how did he retroactively manipulated the blockchain history, and how can one transaction contain 2 recipients?

Is this a bug in blockchain? Anyone please?

$1 = 1 satoshi  ☰☱☲☳☷☷☳☲☰☰☱☲☳☷☳☲☰☰☱☲☲☳☷☷☳☲☳☱☷☷☳☲☰☰☰☰☲☳☳
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March 21, 2013, 03:45:37 PM
 #11

I would feel ok if I just saw that someone gained control over my unprotected wallet and sent btcs to another address, but how did he retroactively manipulated the blockchain history, and how can one transaction contain 2 recipients?

Is this a bug in blockchain? Anyone please?

One is a change address?

One address is the recipient, and the other is a "change address", to which to "change" is sent.

Buy a TREZOR! Premier BTC hardware wallet. If you're reading this, you should probably buy one if you don't already have one. You'll thank me later.
marra (OP)
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March 21, 2013, 03:47:53 PM
 #12

I would feel ok if I just saw that someone gained control over my unprotected wallet and sent btcs to another address, but how did he retroactively manipulated the blockchain history, and how can one transaction contain 2 recipients?

Is this a bug in blockchain? Anyone please?

One is a change address?

One address is the recipient, and the other is a "change address", to which to "change" is sent.

Hmmm, don't get it... Could you please elaborate?

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marra (OP)
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March 21, 2013, 03:50:47 PM
 #13

How can someone reduce the number of transactions on my wallet?

Yesterday, there were 450 transactions and 9.16btc ballance, today after upgrade I have 250 transactions and 0.0001btc balance... The blockchain has been manipulated...

$1 = 1 satoshi  ☰☱☲☳☷☷☳☲☰☰☱☲☳☷☳☲☰☰☱☲☲☳☷☷☳☲☳☱☷☷☳☲☰☰☰☰☲☳☳
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March 21, 2013, 03:55:07 PM
 #14

How can someone reduce the number of transactions on my wallet?

Yesterday, there were 450 transactions and 9.16btc ballance, today after upgrade I have 250 transactions and 0.0001btc balance... The blockchain has been manipulated...

OK, that's a good sign.  I think your coins may still be there.  Don't panic.

Have you tried downloading the latest client (8.1) then running if from the command line like this: bitcoin-qt -datadir=/folder/with/wallet.dat -rescan

It will take a while, but do that first with your backed-up wallet, then with your regular one.

It would be unheard of for the blockchain to have been manipulated, and if that happened much larger accounts than yours would be affected.

EDIT: Just to be sure, where did you download your upgrade from?

4096R/F5EA0017
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March 21, 2013, 04:00:41 PM
 #15

When you send coins, they are sent to at least 2 different addresses. One is your intended recipient address. The other is a change address that you own. In some clients, the change address can be the same as your original public key address.

Also, your backup may be old. You need the latest one if you had done that many transactions.

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March 21, 2013, 04:03:10 PM
 #16

When you send coins, they are sent to at least 2 different addresses. One is your intended recipient address. The other is a change address that you own. In some clients, the change address can be the same as your original public key address.

Also, your backup may be old. You need the latest one if you had done that many transactions.

Yes, totally, my bad.  If there are more than 100 transactions since you made your backup, you need to use the latest one.  

But the fact that this happened right around your upgrade makes me think that you've encountered a (very panic inducing) bug that can be resolved if you keep your cool.

4096R/F5EA0017
marra (OP)
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March 21, 2013, 04:10:03 PM
 #17

Ok, thanks guys, I'll try first with rescan.

But shouldn't upload of wallet.dat to blockchain do the same as rescan?

$1 = 1 satoshi  ☰☱☲☳☷☷☳☲☰☰☱☲☳☷☳☲☰☰☱☲☲☳☷☷☳☲☳☱☷☷☳☲☰☰☰☰☲☳☳
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March 21, 2013, 04:16:03 PM
 #18

Ok, thanks guys, I'll try first with rescan.

But shouldn't upload of wallet.dat to blockchain do the same as rescan?

Yes, theoretically.  But I'm not very familiar with blockchain.info  I'd download the very latest official bitcoin-qt client (8.1), not earlier versions since there was a change in database backends that could be causing your problem.  And then just >bitcoin-qt -datadir=/folder/with/wallet.dat -rescan  

First with your regular wallet, and if that doesn't work with your backup.  It will take a while but please let us know how it goes.

PS: Make sure your antivirus and/or firewall are not blocking bitcoin.

4096R/F5EA0017
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March 21, 2013, 04:19:17 PM
 #19

Yes, I will definitelly post result here. Thanks.

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marra (OP)
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March 21, 2013, 06:46:32 PM
 #20

ok guys, rescan didn't work, yet it gave me an idea... I pulled the old bitcoin-qt version including wallet and chain files from 2 weeks ago using time machine...

balance looks ok and it's not infected with unknown transactions... since there are many transactions on that wallet and i think it is dating from early 2011, I will just forward funds to another one which is using latest bitcoin-qt and download the whole chain again... also, i had a hard drive accident in june 2011 and i changed the whole computer couple of months ago... it could be that just the crc during copying on backup caused the craziness on my piece of blockchain since it has changed a couple of hard drives in the last 2 years...

many thanks for assistance...

cheers


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