at 1000ehs, 1 BTC = $100k
Cool idea and why shouldnt the world be this neat but the fly in the soup here is the inclusion of the $ sign. We cant rely on a constant $ value, I guess perhaps we can refer to 2019 $ and account for its variability afterwards. If we do that we might as well go back to 1971 and take the last fixed price for dollar as the measure, in fact we'd take the grams or troy ounces of gold equal at that time as it would translate in a non changing measure physically.
The free market will always set the price with some error up or down and it generally does eventually do a good job of accounting for various inflation and excess supply available. If we could fix BTC to another commodity, it might be energy as that is used to create the price and gold can also be said to have a relationship to the oil price again with energy a large part of the costs to mine gold. So that is the way I'd go to find a constant relationship in the price.
The security of the blockchain scales directly with the hash rate and so should
the price.
I do think there is some good comparable measure here between blockchains thats fair reflection of approximate worth.