人口数量下降背景下的教育：来自中国农村的实证研究
时间：2021年4月22日（周四）9:30-11:00
主讲：Emily Hannum（宾夕法尼亚大学教授）
主办：北京大学社会研究中心、北京大学社会科学学部
报名方式：欢迎对本讲座感兴趣的师生发送个人信息（姓名、专业、学校/单位）至[email protected]，获得会议链接邀请码，报名截止时间4月21日20:00
观看方式：zoom
语言：英文
BY 中文社科讲座资讯
Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”
To pay the bills, Mr. Durov is issuing investors $1 billion to $1.5 billion of company debt, with the promise of discounted equity if the company eventually goes public, the people briefed on the plans said. He has also announced plans to start selling ads in public Telegram channels as soon as later this year, as well as offering other premium services for businesses and users.
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