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>If bitcoins were overproduced, say during a bubble, they could well remain low long-term - there is no particular pressure driving them up.

Well if the cost to produce them was higher than the price, people would simply stop mining. Perhaps my understanding of bitcoins isn't correct, but I thought that if there were no miners then transactions would stop being processed and the currency would basically stop working and die.

I know right now bitcoins are still being created/produced by miners, but at some point in the future that will stop happening and miners will be compensated through transaction fees as a percentage of each transaction. At that point if price of bitcoins falls below the cost to mine we likely will see people stop mining and transactions ceasing until the price rises enough for it to be worthwhile.

Of course bitcoin is a bit special in that there are a lot of fans of it that will likely be completely willing to accept a loss to keep the currency going. As we all know humans don't act as perfect economic-minded rationalists. But I still think the cost of production is a good bottom metric to keep an eye on. If the price falls below that we will know that the currency is in rather dire straits and being artificially propped up by those with an interest in keeping it going.



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