My point is since the market cap formula is, well, market price * circulating supply, you could change the market price variable with something else. However, since there is no book value in crypto, we couldn't use it as a floor. Then, we couldn't use fair value as well since it would be extremely random
The floor is at ground zero
And at zero there's no demand for a coin, which basically tells us that the coin is dead, i.e. no one is willing to buy it at however low the price. That matches forced liquidation (selling out at whatever price is possible to obtain), and by going back in time from that point we can calculate how much the coin was really worth prior to its demise
In this vein, if we want to assess the current worth of a coin, we should kinda look into the future and find out that
liquidation value (I think the term fits in well with my idea). For this purpose, we could examine the lifetimes of the now-defunct coins and look for patterns. Then we could apply these patterns to a live coin and see where it gets us