{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the current transaction versions of blockchain?","a":"Ethereum: Ethereum is a decentralized open-source blockchain platform founded in 2015. It introduces  the concept of smart contracts and adopts the Proof of Stake (PoS) consensus algorithm."}]}],"pr":"330586bc1bb362188df1326172078e205a27517f4377b237eb74c230e1bfe3de"}