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For roughly the first decade of the "cash machine," they were offline devices
，这一点在雷电模拟器官方版本下载中也有详细论述
Who owns Blockchain?Blockchain is a decentralized technology. It’s a chain of distributed ledgers connected with nodes. Each node can be any electronic device. Thus, one owns blockhain.
Meanwhile, the back-end systems powering the venue, for cashless sales of merchandise and food, ticketing, or crowd control and safety, are also inter-connected.