cuqa if I had to guess, I would say you are accidentally mining on realnet instead of testnet. ;-)

If the section was closed people would just post the same crap somewhere else.

How do I prevent somebody else from using my card? How can I check somebody with a card is the correct person who owns the card?

How do I complain about somebody to get their card revoked?

 

Since you aren't a cryptographer, why not just implement transactions with multiple signatures?

Looks like you missed my post: http://forum.bitcoin.org/index.php?topic=14789.msg218966#msg218966

You still haven't explained how your system would work. Remember that bitcoins, like cash, are sometimes exchanged between two ordinary people, not just between a "merchant" and a "consumer". How would it work in this case?

Instead of pegging to the price of a kWh, why not just peg to the dollar? 

Anyway, the central authority will quickly go bankrupt and then people will be unable to redeem their coins for kWh.

Read this before continuing to make suggestions: https://secure.wikimedia.org/wikipedia/en/wiki/Currency_peg

On top of that, you're suggesting all fees will be arbitrarily set by a central authority which can change its mind at any time. Hahaha! You made a joke!

It can take a few days for interest on Mt Gox to increase after news stories. Dwolla is slow.

Maybe you could respond to my point instead of saying all of that irrelevant crap?

creighto, I was talking about jhansen858's "hidden fees" proposal, not how things are now.

1) The merchants would just raise all their prices by 0.03 BTC to ensure they get the right amount of money. But not all fees are 0.03 BTC exactly, so the merchant wouldn't always be paid the same amount for the same product.

2) I send you 0.05 BTC without realising there will be a fee attached, you get 0.04 BTC and a message that 0.01 BTC was deducted for fees. But you needed 0.05 BTC! So now you try to cancel the transaction to reject the fee, but the only way to cancel a transaction is to resend the money back to the address it came from. But then a fee needs to be deducted again. So we both lose out, because I didn't know you wouldn't get as much money as I sent.

Do you really think the government is that stupid?


The penalties are the same as for drug dealing itself.

Are you saying you would want to work on "coin un-mixers", software that attempts to reduce the effectiveness of coin mixers? (Using statistical analyses on the public data of the block chain.)

Yes they were flawed, it was only a back-of-the-envelope calculation. I didn't think the maintenance cost and building cost would be so expensive compared to the GPUs themselves, but you probably know better.

I think you may have misunderstood my line of attack though. Once somebody has more computing power than everybody else put together, they should go about 1,000 blocks back and try to build a new chain building off that, in secret. (This would take a week.) However their chain will not include any of the transactions from the last 1,000 legitimate blocks. Once it becomes longer than the existing chain, they publish it and instantaneously a whole week of transactions un-happen, i.e. they are reversed and the money (including mining fees) returns to the hands of the original owner, whereas the 50,000 BTC legitimately mined disappear, and the new 50,000 BTC generated are owned by one bitcoin address, the attacker's.

This would cause a massive panic and the price of BTC would crash on the exchanges.

They are then pretty much done in my opinion. They can turn off their datacentre and as long as everybody knows that the datacentre is there and can be powered up again at any time, people will not want to use bitcoins or any similar system.

Of course ideally all the miners would rally together and increase the network power, so much so that our attacker is forced to order another batch of GPUs or give up. But that's a little too idealistic for me.

$1 million can buy enough mining hardware to take over the bitcoin network and basically ruin it for everybody. Assuming you can even find that many GPUs, which you won't on the open market.

You would need about 3,500 mining rigs, each with 3x6990 AMD cards. I haven't done the maths, but you can probably buy that for $1 million. Edit: More like $5 million.

That's not technically a DDoS attack though.

I think you need a better font. Italics? Two exclamation marks? C'mon.

So you support people's right to abuse their children? I think you're exaggerating when you say you consider religious indoctrination to be a form of child abuse.

As long as no pool has over 50% of miners, we should be OK.


I don't believe any such "clever tricks" exist, nor do I believe they even can exist, and unless anybody has any suggestions, we might as well just stop this thread now.

This still leaves the question of how to add or withdraw USD into the service. A service dealing in USD, such as a BTC/USD exchange, can only be so secret.

He asked for a donation, not a loan.

If electricity isn't cheap enough for him to mine coins, why should we pay him to mine coins that he gets to keep? It's an absurdity.

Bitcoin is a currency, not a system for creating social fairness.

So the thing that makes it a transaction fee is the destination address. So without OP_NOP, the destination address would still allow Eligius to pick up that donation, but the only difference is that the transaction might be included in a non-Eligius block.

So they're paying as a thank you for Eligius mining it, but the only reason no other miner mined the transaction is that they changed their transaction to prevent them from doing so.

This is really pointless.