nowhere - it doesn't really exist other than in bitcoin24's database. for whatever reason, the trading engine is spazzing out and crediting twice (or more) for trades in some instances. it doesn't matter how i'm buying from or selling to really, because the amount of free coins being made out of thin air by the bug makes it impossible to lose.

i tested this last night when i was the only one on it (seemingly). i don't mind detailing this now because the site is properly down and no-one can get in to take advantage, but if i'd revealed how as soon as i knew this could have been happening for hours. from memory i did:

make buy order 1 btc @ ~80 euro
make buy order 1 btc @ ~80 euro
account is credited for 3 btc, only 160 euro taken

make sell order 0.1 btc @ ~77 euro
x30

account is credited for 4.5btc worth of trades @ 77euro/btc

so i ended up with approximately +200EUR more than when i started over the course of a few minutes and just some quick clicking. really i should have been down about 6EUR i guess.

i was clicking very rapidly when making the buy/sell orders in order to reproduce the glitches i'd read about and it obviously worked very well. however even when NOT trying to induce a problem the glitch would still occur - i made a small trade just so i could see if the BTC withdrawal function was working, and ended up getting credited two or three times. just a simple, one click buy order, with no load on the engine as i was just about the only person there. something is clearly very wrong. i wasn't on the exchange this time yesterday but i can see why it was taken offline so abruptly if this was happening. it also explains why the hotwallet is being kept empty - if everyone draws out their coins this can't be corrected. if the coins stay in the system, the database of trades can be rolled back (as i understand it) and BTC/EUR/USD balances can be restored to something resembling 'normality' before the glitch.