Bitcoin Futures Rise on Financial Exchange Trading
The future prices of bitcoin increased 18 percent to more than $18,000 on Monday morning on the Chicago Board Options Exchange.
Futures are a type of contract in which a buyer and a seller agree on a price for a particular item to be delivered on a date in the future. Future contracts are available for nearly everything that can be sold such as wheat, soy, gold, oil, cocoa and, now, bitcoin.
The demand for bitcoin futures slowed the trading in the Chicago exchange. At times, trading on the site was not available.
The price of a bitcoin itself has gone up from $1,000 at the beginning of 2017. As of December 11, it was $16,511 on the bitcoin exchange Coindesk.
What is a bitcoin, anyway?
Bitcoin is different from other national currencies that are supported by governments and national banks. It is not a coin or printed on paper. It is stored as a line of computer code.
Bitcoin is similar to cash because you can spend it without using your real identity, as you do with a bank transfer or credit card. People who want to buy and sell anonymously like bitcoin.
How is bitcoin created?
Mining is the only way to create new bitcoin.
People "mine" bitcoin by lending computing power to verify other users' transactions. They receive bitcoins in exchange. The coins also can be bought and sold on exchanges with U.S. dollars and other currencies.
This activity is called a blockchain. The blockchain, or global record of how bitcoin is exchanged, prevents anyone from spending the same bitcoin more than one time.
How did bitcoin come to be?
There is still some mystery about the creation of bitcoin in 2009. An anonymous person or group that used the name Satoshi Nakamoto described the idea of an electronic cash system in a research paper in October 2008.
The first bitcoin block was created by Satoshi Nakamoto in January 2009, with a reward of 50 bitcoin.
Who is using bitcoin?
Some businesses, such as Overstock.com, have accepted payments in bitcoin. Still, its popularity is low compared with cash and credit cards. Many individuals and businesses will not accept bitcoins for payments.
Some well-known banking executives have spoken against bitcoin. Jamie Dimon, head of JP Morgan Chase Bank called it a "fraud." But his bank is starting to use the technology behind bitcoin, known as blockchain, to more accurately track trading and assets.
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1.future price 期货价格
The future price of these resources zero is known.
2.particular item 特定商品
When a user likes a particular item, related ones are recommended.
3.credit cards 信用卡
Credit cards can be handy — they mean you do not have to carry large sums of cash.
4.compared with 与...相比
He's a pygmy when compared with great musicians.
5.They receive bitcoins in exchange.
in exchange 作为交换
The trade unions bargained away their rights in exchange for a small pay rise.
I let him have my watch, and took his camera in exchange.
6.At times, trading on the site was not available.
At times 曾经；有时
I think the reformers have at times oversold the reforms.
I found Ben's cynicism wearing at times.
期货是指买卖双方就特定商品的价格达成一致并在将来某一时间交付的合约类型 。期货合约几乎包括所有可交易的商品，如小麦、大豆、黄金、石油、可可和比特币 。
比特币期货交易的需求猛增导致芝加哥交易所的交易速度迟缓 。该交易所一度暂停交易 。
2017年初，比特币的价格开始从1000美元飞速上涨 。截至12月11日，它在比特币交易所Coindesk的交易价格涨至16511美元 。
比特币不同于其他国家货币，它缺乏政府及国家银行的支持 。它既不是硬币也不是纸币，而是一行计算机代码 。
比特币与现金类似，因为用户使用时不必像银行转账或信用卡一样验证身份 。和比特币一样，比特币交易双方也是匿名的 。
人们通过借贷计算能力验证其它用户的交易实现“挖矿” 。他们接受比特币交换 。这些比特币也可以在交易所中兑换美元和其它货币进行买卖 。
这一交易过程被称为“区块链” 。区块链或者说比特币交易的全球记录可防止其他人同一时间消费同一枚比特币 。
关于2009年比特币诞生仍然存在一些谜团 。一位自称中本聪的匿名人士或组织在2008年10月的一份研究报告中提出电子货币系统的概念 。
Overstock.com等企业已经接受比特币付款 。不过，与现金或信用卡相比，比特币的普及程度仍然很低 。许多个人或企业不接受比特币付款 。
一些著名的银行高管曾反对比特币 。摩根大通银行的负责人杰米·戴蒙（Jamie Dimon）称比特币是“一场骗局” 。但是其所在的银行却在使用比特币的交易方式——“区块链”，这可以更准确地跟踪交易和资产 。