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trout (OP)
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July 19, 2012, 12:43:03 PM
Last edit: July 19, 2012, 03:21:51 PM by trout |
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short version: blockchain.info anonimizer sent 3.4BTC less than it received, the transaction
for 3.4BTC was hanging as "unconfirmed" on blockchain.info (and there only) then disappeared.
long version:
blockchain.info anonimizer is a mixer and anonimizing proxy for sending coins.
On Tuesday I saw that it was giving away 0.5% "bonus" because they needed fresh coins to mix with.
I decided to test it, so first I sent 1 BTC through it to myself, it went smoothly and gave me the bonus 0.005.
Fine. Next goes 200BTC. I requested a transaction to 1BKp56zc9UgAxqQjku8UXiGwEriABZGYW7 and was given the address
1Boob22SYZMGPrniV8Yp4amWEvzBV5F1Ru (yep. its firstbits is 1boob2) to send to.
Sent 200BTC, received a bonus of 1 BTC on the sender, but here goes the weird part - I only received 196.54171277 BTC
on the receiving address. There was another transaction of 3.4xxx BTC that would make the total right. It's been hanging
as "uncomfirmed" on blockchain.info for at least 10 hours (I checked the next morning), but my client never saw it (it was not broadcast?) and then it disappeared from blockchain.info as well.
So I think blockchain.info has got a bug and I lost my hard-earned coins.
anyone had anything similar going on?
I guess some people may want to keep what they do on "anonimizer" secret, but to me it doesn't matter,
I was just sending some coins to myself to see if I get a bonus...
Edit: I've got 3.4BTC back from blockchain.info (piuk) now
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Once a transaction has 6 confirmations, it is extremely unlikely that an attacker without at least 50% of the network's computation power would be able to reverse it.
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davout
Legendary
 Offline
Activity: 1372
Merit: 1007
1davout
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July 19, 2012, 12:46:57 PM |
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There is a fee for anonymizing.
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trout (OP)
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July 19, 2012, 12:50:35 PM |
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There is a fee for anonymizing.
According to blockchain.info the fee was not supposed to be applied when the bonus was offered. It was not applied to my first (test) transaction (except for miner's fee of 0.0002) of 1BTC. And this does not explain the weird "uncomfired" transaction. |
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NRF
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July 19, 2012, 12:51:32 PM |
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Not really related to your question but...
If you "bitcoind getnewaddress [whatever]" and use that address for the transaction and NEVER use it again you have just done an anonymous transaction that cannot be tracked (unless someone gets your wallet.dat, and then it is the least of your problems).
No third party's that have any information about you (the anonimizer) nothing. Just you and your bitcoins.
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OneEyed
aka aurele
Full Member
Offline
Activity: 154
Merit: 100
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July 19, 2012, 12:53:28 PM |
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There is a fee for anonymizing.
If he received the 1 BTC bonus, it means that the transaction was free. In this case, the anonymizer only subtract the 0.0002 miner fee from what you receive. He should have received 3.458087223 in addition to his 196.54171277. |
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trout (OP)
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July 19, 2012, 12:55:23 PM |
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Not really related to your question but...
If you "bitcoind getnewaddress [whatever]" and use that address for the transaction and NEVER use it again you have just done an anonymous transaction that cannot be tracked (unless someone gets your wallet.dat, and then it is the least of your problems).
No third party's that have any information about you (the anonimizer) nothing. Just you and your bitcoins.
you'll have to deposit some coins to that address first. So you have to use the address at least twice. But yeah, I don't see much point in paid anonimzers since you can use any collective wallet like instawallet or any exchange to do just the same. |
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NRF
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July 19, 2012, 01:03:38 PM |
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you'll have to deposit some coins to that address first. So you have to use the address at least twice. I didn't think you had to deposit coins in an address before you deposit coins in an address. I admit I could be wrong. I have another for you, what came first, the chicken or the egg?  |
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davout
Legendary
Offline
Activity: 1372
Merit: 1007
1davout
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July 19, 2012, 01:40:45 PM |
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There is a fee for anonymizing.
If he received the 1 BTC bonus, it means that the transaction was free. In this case, the anonymizer only subtract the 0.0002 miner fee from what you receive. He should have received 3.458087223 in addition to his 196.54171277. Are there any fees for anonymous transactions? The base fee for anonymous transactions is 1.5% fee + 0.0002 BTC miners' fee. From what I understand the bonus is for ppl who provide clean coins to the mixer |
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trout (OP)
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July 19, 2012, 01:49:15 PM |
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There is a fee for anonymizing.
If he received the 1 BTC bonus, it means that the transaction was free. In this case, the anonymizer only subtract the 0.0002 miner fee from what you receive. He should have received 3.458087223 in addition to his 196.54171277. Are there any fees for anonymous transactions? The base fee for anonymous transactions is 1.5% fee + 0.0002 BTC miners' fee. From what I understand the bonus is for ppl who provide clean coins to the mixer The way to provide coins to the mixer is to send them through the mixer. Then there are (supposedly) no fees and 0.5% bonus. Which is how it worked for my 1BTC transaction. For the big one the missing 3.458087223 is actually more than 1.5% (which is 3) but the fee should not apply anyway. From what I understand, if the mixer is requested to transfer X coins it needs at least X "clean" (=just different, unrelated coins) to perform it. If it doesn't have X coins it asks them from others and offering 0.5% bonus. Since he charges 1.5% from X he makes profit anyway. |
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OneEyed
aka aurele
Full Member
Offline
Activity: 154
Merit: 100
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July 19, 2012, 01:49:53 PM |
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There is a fee for anonymizing.
If he received the 1 BTC bonus, it means that the transaction was free. In this case, the anonymizer only subtract the 0.0002 miner fee from what you receive. He should have received 3.458087223 in addition to his 196.54171277. Are there any fees for anonymous transactions? The base fee for anonymous transactions is 1.5% fee + 0.0002 BTC miners' fee. From what I understand the bonus is for ppl who provide clean coins to the mixer People providing clean coins to the mixer get a bonus + no 1.5% fee. There is no way to get the bonus (as he did) without getting the 0% fee as well. And he says the transaction was stuck in the blockchain without being included, this can well happen due to a non-propagation. Note that this morning blockchain.info didn't have any information about the last few hundreds blocks, so it might well have crashed while having pending transactions that should have been (re)propagated. |
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bulanula
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July 19, 2012, 01:55:14 PM |
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Sorry if I am stating the obvious here but consider this : maybe your coins were not clean and you have to pay the fee instead.
Nothing is 100% clean except new generated blocks.
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piuk
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July 19, 2012, 02:44:17 PM |
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Note that this morning blockchain.info didn't have any information about the last few hundreds blocks, so it might well have crashed while having pending transactions that should have been (re)propagated.
This was the problem and it should now have been resolved. |
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