CARDANO
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Cardano (ADA) is the blockchain; its token is named after mathematician Ada Lovelace. Cardano, which is open source, was launched in 2015 by Charles Hoskinson, a co-founder of Ethereum. Its foundation is Ouroboros, which the website describes as "the first provably secure proof-of-stake protocol" (versus proof-of-work protocol) and the first blockchain protocol built based on peer-reviewed research.