Bitcoin QT change transaction fee / Dogecoin hashrate wallet

To elaborate on that. If not very careful, you can end up sending a big fee, since the fee is calculated in the following way:

sum of all inputs values - sum of all outputs values

"Change" is an output that you control to which you will send the remaining amount. Failing to do so will end up sending all remaining value as transaction fee, which then goes to the miners.

If you end up doing that (as I did few months ago) you still have a chance though - through blockchain.info you can get information about who mined the block in which your transaction was included. If you're lucky, it will be one of the big pools. You can then try to contact them and ask to send the amount back to the originating address. In my case BTC Guild was nice enough to do exactly this.

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Linking to a thread about a paranoid blog/rant, regarding:

"Bitcoin is a cryptographic botnet"

Bitcoin, I believe after reviewing the protocol description here is a US gov’t black op. Possibly worth discussing, since it's reactionary slant was directly provoked by OP's topic.

Seems to have gotten buried. Possible deliberate forum sliding?

The only reason I might suggest considering this botnet premise is due to hardware mining.

ASICs are pretty much the norm for mining now, and near as I can tell, there hasn't been much discussion regarding all the custom hardware floating around lately.

Source: news.ycombinator.com June 3, 2014 – 05:50