CyberMiles之区块链


在上一篇博客中，简单介绍了CyberMiles的相关技术及应用之处，CyberMiles相信区块链技术可以为c2c电子商务网络中的常见问题提供自然的解决方案。但区块链这个技术也是近几年的新生物，对于不了解此技术的人们，很难理解这个区块链到底是什么东西，一不小心，还会以为是“取快递”呢。。。在这里，我就结合个人近来所学，先简单介绍下区块链技术。

区块链（Blockchain）是指通过去中心化和去信任的方式集体维护一个可靠数据库的技术方案。通俗一点说，区块链技术就指一种全民参与记账的方式。所有的系统背后都有一个数据库，你可以把数据库看成是就是一个大账本。那么谁来记这个账本就变得很重要。目前就是谁的系统谁来记账，微信的账本就是腾讯在记，淘宝的账本就是阿里在记。但现在区块链系统中，系统中的每个人都可以有机会参与记账。在一定时间段内如果有任何数据变化，系统中每个人都可以来进行记账，系统会评判这段时间内记账最快最好的人，把他记录的内容写到账本，并将这段时间内账本内容发给系统内所有的其他人进行备份。这样系统中的每个人都了一本完整的账本。这种方式，我们就称它为区块链技术。


可以发现，这是在牺牲一点效率的情况下，获得了极大的安全性。首先没有一本中央大账本了，所以无法摧毁。每个节点都仅仅是系统的一部分，每个节点权利相等，都有着一模一样的账本。摧毁部分节点对系统一点都没有影响。其次，无法作弊，因为除非你能控制系统内大多数人的电脑都进行修改，否则系统会参照多数人的意见来决定什么才是真实结果，结果会发现修改自己的账本完全没有意义（因为别人不承认）。由于没有中心化的中介机构存在，让所有的东西都通过预先设定的程序自动运行，不仅能够大大降低成本，也能提高效率。而由于每个人都有相同的账本，能确保账本记录过程是公开透明的。

区块链最重要的是解决了中介信用问题。在过去，两个互不认识和信任的人要达成协作是难的，必须要依靠第三方。比如支付行为，在过去任何一种转账，必须要有银行或者支付宝这样的机构存在。但是通过区块链技术，比特币是人类第一次实现在没有任何中介机构参与的情况下，完成双方可以互信的转账行为。这是区块链的重大突破。


区块链主要有以下核心内容：

1、去中心化

所谓的信任的力量。你不信任一个没有足够信用度的单独个体，但你会信任一堆个体或者有足够信用度的单独个体。在现实社会中，银行就是这个有足够信用度的个体（中心）。但以银行等作为信用中介是需要成本的，而我们普通大众就要为这庞大的信用成本买单。所以才会造就金融业是最赚钱的行业。

2、开放性

区块链可以理解为一种公共记账的技术方案，系统是完全开放透明的，账簿对所有人公开，实现数据共享，任何人都可以查账。开放效果类似这样：


3、不可撤销、不可篡改和加密安全性

区块链采取单向哈希算法，每个新产生的区块严格按照时间线形顺序推进，时间的不可逆性、不可撤销导致任何试图入侵篡改区块链内数据信息的行为易被追溯，导致被其他节点的排斥，造假成本极高，从而可以限制相关不法行为。

好了，相信大家对区块链技术的优势已经有了大概了解，而CyberMiles正是利用区块链技术，并且对其进行革新，使其应用场合更加广泛。其详细技术呢，还是请大家看其技术白皮书啦。


随着时间的推移，CyberMiles可以用于许多不同类型的商业应用，包括：建立C2C交易平台的交钥匙解决方案，基于社区的争端解决方案，构建电子商务的替代支付和融资解决方案，使当地企业能够运行有针对性的，真实的或者建立一个分散的，基于社区的乘车分享平台。这些都是我们正在解决的现实世界问题的例子，但我们的第一步是利用区块链技术革新在线市场。


项目白皮书：https://cm.5miles.com/file/project/Project%20white%20paper_en-US.pdf

技术白皮书：https://cm.5miles.com/file/technical/Technical%20Whitepaper_en-US.pdf

bt论坛：https://bitcointalk.org/index.php?topic=2344875.msg23939527#msg23939527

作者：citacititut

Bitcointalk配置文件: https://bitcointalk.org/index.php?action=profile;u=1155701

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