Hi, Just a little technical question about Bitcoin-QT,

I noticed when I send some coins to gox or bitstamp, that the transaction is only locally in my bitcoin-qt.
There is no transaction showing up in the blockchain. (even not after a night.)

I checked in qt and my fee is zero for this moment (did not know this option)


My question is, is there something broke at my side, and should a transaction that sent some coins appear a immediatly or a few minutes later unconfirmed  in the blockchain? And maybe gets confirmed a few hours later

Or does my bitcoin-qt have to wait on the transaction delay and can only send the transaction to the blockchain after a few hours / days and appears only after a few hours / days in the blockchain?

How exactly can a miner decide to process a transacion or not? is it a setting or is this setting managed by the mining pools and not by the individual miners?

Hi,
 is there somewhere a calculator or spreadsheet available so you can calculate the profit you made with the miner(s) you already have?

for example, in juni I purchased 20 USB erupters @ 0.5btc each, or at 75 euro each,
they have mined since then, what is my profit made with them.? (calculation with the known difficulties)

Is there a calculator that calculates historical profit and not only expected profit?

I want to do a proposal , to help stop fraude & scamming with bitcoin via this forum.

I would like to propose that every forum user that wants to organise a group buy, or wants to sell in the marketplace, need to have his ID verified by the forum owner before he can start a group buy or offer something in the market.

With a verified ID i mean drivers license, ID card, 3 named invoices, Bank accounts,...
pretty like Gox asks to verify and ID.

Personally I find the forum owner shares responsability in scam or fraud cases that go via the forum.

Is it possible to have something like this implemented on very short notice?

I have the feeling that a lot of group buy's of mining machines shares maybe also scam, and also some companies that offer mining machines but don't even succeed in having a valid address or VAT number on their website.

If they have ads here, or announcments, please verify them!

Is this something where the forum owner want to work on? Offcourse this needs some resources, but it would be good for the whole BTC community