I wonder how to calculate the 'book' value vs. trading value of 1 BTC.
Book value of BTC's shold be the sum of money put into their production since the start (as calculations made by the computers etc.) minus 20% amortization yearly. So this amount divided into BTC's should be 1 BTC book value. And then we could compare to the trading value (present).
Simplified example with non-real values:
Year 1 - used 20 cents for electricity to produce 1 BTC. Book value of 1 BTC = 20 cents.
Year 2 - used 21 cents for electricity to produce 0.9 BTC. Book value = [(0,8*1*20) + (1*0.9*21)] => 2BTC book value = 16 + 18,9 = 34,9 cents=> 1BTC = 17,45
Year 3 - used 25 cents for electricity to produce 0.5 BTC. Book value = [(0,6*1*20) + (0.8*0.9*21) + (1*0.5*25)]+ => 3BTC book value = 12+15,12+12,5 = 39,62=> 1BTC = 13,20
and so on.. (assuming not selling the BTC's, short period od production etc.).
Thesis:
no. 1. If the difficulty increases over some level, the book value will start to decrease so the disproportion over book and trading value will be increasing, that is the moment, when BTC value should be lower
no. 2. If we see the BTC as gold, this difficulty increases astronomically the value due to exhausting resources.
Also I wonder how it refers to the general market cap.
What do you think?