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; n( x) _1 o: |" W; Z' i今天来继续昨天的嗨聊，昨天说到需要“区块链” Blockchain。区块链，它是一个去中心化的数据库，
& h' z- z2 s+ t- t8 P7 m0 r9 S全世界都可以看到它所记录的交易。
" t# n) I9 w+ i+ _; g9 _# y1 f: u
8 x4 ?2 R2 ~2 ?! M! [4 j2 x5 J2 @( k那么区块链的好处是什么？0 V# Q" L% `7 c+ J
（一）不可被更改- ?5 f2 W% _. H4 H3 b. |( y1 E
（二）不可被删除
/ V# r% L5 X6 r8 b（三）可追溯每一笔交易) l3 q! q3 x( O/ Z" v2 v
（四）全程公开0 K9 @' b: M4 n* `% i& A: E
) H2 ~* D6 S$ [; m0 l区块链是按照时间顺序接起来的，& |) {0 h) H- l1 x( o; e/ ^
每一个区块信息都包含着交易时间，交易对象，交易内容等等。! R6 e. J7 v) p& H. f3 M
它是根据“哈希”算法或是“散列”算法， e% ~# W1 S& V/ _; h* G4 S
简称一串数据，也可以被称为指纹！9 L% I' O D: ~6 G6 e
只要上一个区块的指纹改变看，接下来的也会被更改的！/ g; [, r. L5 `$ y0 Q% j
5 F/ q$ [9 g% P: M7 J6 f- r用故事来理解：
: ~1 _2 C1 k c) p7 \8 r4 y( g! e, ~# v比如小明，小康，小丽这三个人各自都欠了小美3块钱，
: m+ L0 @3 w4 c) |小美的手上有7块钱，这个在区块链上是会显示的，
) y0 D) W: E5 W. K6 _3 N如果小明还了小美2块钱，那么他还欠小美1块钱，0 A5 ^0 h+ R. ]
他是不能说谎说自己已经把所有钱都还了的，+ y, K) J2 h5 [' d3 Z6 O
因为其他人都知道小明只还了2块钱！
$ H0 G) _1 j9 _$ J4 G2 [6 H5 f6 C8 ~. O. W0 u
为什么大家会知道？那就是因为区块链全程都是公开的啊！! V. m, d6 u5 a# j. r6 ~
你所做的每一笔交易，全世界的各个角落都知道！/ N Q$ W7 e6 |8 I2 l
简单来说，如果一个黑客要侵入一个账户的话，! D+ L/ u' j% `# Z& U7 |9 x
那么他基本上就是要侵入世界各个角落的用户先，8 }* F! d; _9 r+ A* _, o. N
才能入侵到你的账号！0 ?, `2 S8 }$ F6 I) Q, f% I ^3 ~
4 R' X4 `6 G j. u y* o" e
今天就是区块链的一些小分享，自己也是刚起步学习，有错的地方就请各位帮我纠正一下了！你对于区块链的看法是什么？一起来探讨一下吧！ 4 P `8 a8 z! [
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1 c. h0 k4 n w$ X, U
我也是刚学习的，给大家分享分享而已~ |
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