Source: Cointelegraph.com NewsThe first day of the main stage event included a keynote presentation from Ethereum’s Vitalik Buterin, 1inch Network’s Sergej Kunz, and Klaytn Foundation’s Sam Seo.Read MoreEthereum, roll-up, layer 2, metaverse, Klaytn Foundation, Sam Seo, 1inch Network, Sergej Kunz