Charles Hoskinson one of the co-founders of Ethereum (ETH), the founder of Cardano (ADA), and the CEO of Input Output Hong Kong (IOHK). Cardano is a fully open-source decentralized public blockchain and cryptocurrency project built by blockchain engineering firm, Input Output (IOHK). The platform maintains operations for its ADA cryptocurrency, and is multilayered, which gives the system the elasticity to be easily maintained and upgraded with a soft fork. Cardano uses a proof-of-stake (PoS) system, which allows for greater scalability and reduces electricity requirements.