One of the key aspects is energy consumption. Proof-of-Work (PoW) cryptocurrencies such as Bitcoin require huge computing power, which leads to significant electricity consumption. Alternative consensus mechanisms such as Proof-of-Stake (PoS) Sustainable crypto investment offer more environmentally friendly solutions, reducing energy costs significantly. In addition to environmental aspects, transparency and responsibility of projects are important. Investors are increasingly paying attention to the development teams, their reputation and contribution to the development of the community. Projects aimed at solving social problems and supporting sustainable development are becoming more attractive to responsible investors.