Green cryptocurrencies should be developed according to new eco-innovative technologies, so that their creation, digging will use much less electricity than today. Currently, digging cryptocurrencies still uses as much energy as a medium-sized country on a global scale. The issue of saving electricity consumption is particularly relevant in the context of the current energy crisis and, in the future, also in the context of a multi-year developing climate crisis. Therefore, green cryptocurrencies, which will be used to finance new pro-environmental and pro-climate green business ventures, should also be created using many times less electricity than at present in order to be green in themselves.