Or at least that's what we like to think.
On the other hand BitCoin fundamentally has no tangible asset backing it. Its price is driven purely by supplly/demand, rather than any sort of book value.
I don't know enough about macro finance to discern whether this is a good/bad/neutral thing for BitCoin, but it's a worthy distinction to make in comparing stock and Btc.
Not really. You can't recover the costs by "melting down" bitcoins, so it doesn't provide a support for the value of bitcoins the way that the use-value of gold might provide a support for the value of gold currency.
Clearly, if the cost to mine coins is less than the market value plus the expected transaction fees that can be earned by mining (mining is also transaction verification), there is no economic incentive to mine, but that doesn't operate as a price floor so much as a limit on the viability of the system.
As the value of the created coins go up, miners can afford to spend more on the effort in an attempt to capture a bigger share.
More precisely: Does the cost of making something have anything to do with the price it is sold at?
That said, it's by no means a floor, particularly on goods that stick around a while, since the things already in existence can more than meet the demand, which can drive the price arbitrarily low.
On the other hand, dividends are actually quite often the primary reason for owning stocks, just not typically the stocks we talk about a lot here. Stocks in large, well established companies are often pretty stable, growing only with the market at large, to the point that the dividend can certainly be the bulk of the payout for owning the stock.
A bitcoin exchange is a place where the bitcoin is traded.
Obviously this is neither the only actual, nor potential use of bitcoin.
It is my understanding that common stock typically does have voting rights.