Create inter-blockchain wallet with time-complexity exchange based on difficulty of blocks, and associated expected energy to mine, and extinguish all cryptos with a more fundamental unit of value: measured time-complexity itself.
Each cryptocurrency unit represents a very different amount of energy (or time-complexity) used to mine its unit, which creates socio-economic crypto-inequality, as currently they are traded as if they are equal, in most cases... Wallets don't show invested energy (kWh or compute cycles), but could be made to (see link).
Idea: universal wallet that works for all coins based on electricity energy or time-complexity invested as universal exchange rate.
Resolve the scandal of cryptocurrencies, by introducing underlying asset: time-complexity itself -- as a currency.
Energy/Compute in Bitcoin Balance