#头条 #俄乌战争 乌克兰同意与美国达成矿产权协议 https://telegra.ph/%E4%B9%8C%E5%85%8B%E5%85%B0%E5%90%8C%E6%84%8F%E4%B8%8E%E7%BE%8E%E5%9B%BD%E8%BE%BE%E6%88%90%E7%9F%BF%E4%BA%A7%E6%9D%83%E5%8D%8F%E8%AE%AE-02-26
BY 华尔街日报 RSS
The Singapore stock market has alternated between positive and negative finishes through the last five trading days since the end of the two-day winning streak in which it had added more than a dozen points or 0.4 percent. The Straits Times Index now sits just above the 3,060-point plateau and it's likely to see a narrow trading range on Monday.
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.”
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