[benbataille]

1 Bitcoin today and 1 Bitcoin in six months is not the same at all because you lose all the value you could have add from this Bitcoin during the six months so you have to discount it. That's called present value of money and that's one of the way companies manage their investments.

Theoretically, you have to use the real rate of return of your money and discount it on the time period. Of course, estimating the real rate of return is an art in itself. Considering value of bitcoin has been shown to be highly volatile, doing any semi-long term investment with it is basically gambling.

[nandemo]

That's true, but you're talking "just" about time value (interest), sig's comment was about the volatility of BTC in terms of USD, different things. You'd also lose the interest if the product was denominated in USD or another major currency.