Cardano is one of the biggest cryptocurrencies by market cap. It’s designed to be a flexible, sustainable, and scalable blockchain platform for running smart contracts — which will allow the development of a wide range of decentralized finance apps, new crypto tokens, games, and more.
Cardano’s goal is to be the most environmentally sustainable blockchain platform. It uses a unique proof-of-stake consensus mechanism called Ouroboros, as opposed to the energy-intensive proof-of-work system currently used by Bitcoin.