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比特币盛兴导致大量矿工加入 三年后人类或将因挖矿而无电可用
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Topic: 比特币盛兴导致大量矿工加入 三年后人类或将因挖矿而无电可用 (Read 70 times)
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比特币盛兴导致大量矿工加入 三年后人类或将因挖矿而无电可用
November 27, 2017, 03:40:13 AM
#1
最近,节节攀升的比特币成为了全球最耀眼的资产之一。
很多人担心攀上高位的比特币会一路暴跌,带来不可估量的损失。但是,比起比特币价格,更让人担心的是,按照现在比特币挖矿的增长速度,在2020年时,比特币就将消耗掉全球的电能。
按照Digicomist的统计,截至11月20日,比特币挖矿一年耗费的电能为29.05万亿瓦时,约占全球电能总消耗量的0.13%。
看起来这一比重在全球来说无足轻重对不对?但实际上挖矿耗费的电能已经超过了全球159个国家和地区的年消耗量,这其中包括西欧的爱尔兰和拥有近2亿人口的尼日利亚。
比特币挖矿耗电量也已经超过了部分欧洲国家,包括爱尔兰、冰岛和很多中东欧国家(图片来源:powercompare)
在一些国家,比特币挖矿已经耗费了当地相当比例的电能。如在澳大利亚、荷兰和捷克,比特币挖矿耗费的电能都超过当地的10%,在捷克这一比例更是已经接近45%。
几个国家中比特币挖矿耗费电能占全国总电能消费的比重(从上到下:美国、俄罗斯、加拿大、德国、法国、英国、意大利、澳大利亚、荷兰、捷克;图片来源:Bitcoin Energy Consumption)
而比特币挖矿的耗电量还在持续快速增长。仅仅在过去一个月内,挖矿耗电量就增加了29.98%,如果按照这一速率递增,在2018年10月,比特币挖矿耗电量就将比英国全年耗电量大(309万亿瓦时);在2019年7月,比特币挖矿耗电量就将比美国全年耗电量大(3913万亿瓦时);而到了2020年2月,比特币挖矿就将耗尽全球的电能(21776万亿瓦时)。
比特币挖矿能带来多大收益呢?目前,全球的比特币挖矿营收约为72亿美元,而成本仅有15亿美元。
比特币挖矿为什么会耗费这么多的电能?
在挖矿过程中,比特币矿工们需要性能优异的计算机来创建区块。而随着时间的推移,区块创建难度越来越大,就需要性能更好的计算机,耗电量也随之增加。(华尔街见闻)
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