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[基础知识] 什么是区块链(动画中文版)

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发表于 2016-6-30 11:34:14 | 显示全部楼层 |阅读模式
什么是区块链(动画中文版)



区块链已经成为全球互联网金融最为火热的概念,罢特,what is 区块链?

网络中,无论大小系统背后都有一个数据库,数据库就像一个大的账本。比如某宝的数据库就像一个大账本,账上记录了A用户有多少钱、B用户有多少钱。如果A用户支付一元给B用户,那么某宝就在B用户账上加上一元,而在A用户账上减掉一元。所以也可以把数据库的变化看成是一种记账行为。

我们通常认为谁维护系统,谁就天经地义的管理数据库,而其它使用者无权参与。就像某宝的用户无法参与具体的记账行为一样。

区块链,颠覆体验,让每一个数据库用户参与其中。

区块链就像一个大的总帐本,系统中的每个用户都可以参与竞争记账。在某个时间段内,有任何数据变化,系统会在竞争者中找出记账最快最好的用户。该用户把这段时间内的数据变化写到一个区块中,就像写到一页账本上,并把这页账本复制给系统内所有其他用户进行备份,完成整个动作。在下个时间段周而复始,于是系统中每个节点都有着相同账本的副本。

由于每个区块数据是通过密码学技术来链接在一起,所以我们称它为“区块链(Blockchain)”,或者 “分布式总账技术(Distributed Ledger Technology)”。

区块链,让全民参与记账。全民记账更稳定,由于系统中并没有特定记账人,系统中任意部分节点失联或者被摧毁,都不会影响系统的运行。全民记账更安全,系统规定相同数量最多的账本是真账本,少部分和其他用户不一致的账本即为假账本。这让具有足够多节点的区块链很难被攻击和篡改。这些节点分布在互联网的任意角落,如果你不是上帝,无法控制全世界的电脑,否则无法篡改。因此区块链被认为有史以来最为安全的数据管理方式。全民记账更高效,由于没有中心化的中介机构存在,完全通过预先设定的程序自动运行,能够极大降低成本和提高效率,并且确保账本记录过程和内容公开透明。

比特币只是区块链技术方案在支付领域的一个试验性应用,它还可以用于更加广阔的领域,医疗、供应链、物联网、安全认证、社交以及人工智能等领域都有它的身影。《经济学人》称区块链“信任的机器(the Trust Machine)”,认为它对于全球金融甚至是社会结构都会产生巨大且深远的影响。

如果用一句话总结,区块链技术是在多方无需互信的环境下,通过密码学技术让系统中所有参与方协作,来共同记录维护一个可靠数据日志的方式。你懂了吗?



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发表于 2016-7-1 12:54:02 | 显示全部楼层
以往的信任,都是赌博。例如没有验钞机时,当面收了纸币,不好意思细看,等顾客走后,还要举起来仔细瞅瞅摸摸。网络银行、支付宝虽然解决了很多信任障碍,但也引发了新的问题,例如黑客攻击。有了区块链,轻松多了。
以太坊账户:0x36Bb749aF3a044b251C9bBe1552626464E37de07
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发表于 2016-7-23 14:23:12 | 显示全部楼层
不错前排支持!
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发表于 2016-7-25 11:01:17 | 显示全部楼层
加油,总有一个适合你回帖。
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发表于 2016-8-3 21:09:13 | 显示全部楼层
去中心化: 更安全, 不可篡改;
分布式: 更稳定, 任何节点失联不影响系统运行;
全民记账: 更高效;
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发表于 2017-2-16 12:40:37 | 显示全部楼层
可以应用领域是很多就等落地
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