Topic: 简单区块程序编写步骤 (Read 313 times)

希望能有更多大虾来技术交流!

我会写python的程序。

中文区已经沦陷成广告集聚地，你还是发到英文区比较好

这个应该是要发到高级讨论区吧，这里 估计没几人看的明白

楼主这种帖子也算是一种干货，毕竟BTT充斥了太多的无意义的水贴，希望能多看见一些向楼主这样的技术帖子出现。
当然不一定多数人能看的懂，但是只要写出来，总是有会愿意去看的人，这个就是帖子的价值之所在。

区块链技术会应用越来越普遍，希望能有更多大虾来技术交流!

感谢楼主分享，区块链技术会应用越来越普遍，希望能有更多大虾来技术交流

好帖子哇，论坛里就该多些技术交流贴，大家可以互相交流，也能学到新的知识

多谢楼主分享，又学习到新知识了，区块链技术会越来越好，也是未来发展的一大方向

我只懂很基础的编程，这个根本就是编程基础入门，教别人我还没到那个级别，
这里肯定有很多懂得挖矿技术的牛人

其实我建议楼主，如果有这个技术或者想法，你可以写一写关于搭建海外节点方面的教程，现在流行节点挖矿，需要租用阿里云等公司的服务器，但是很多节点是用linux系统来安装软件的，老外的教程难以看懂，大家对这个可能更感兴趣吧。
毕竟区块程序编写这个离我们大多数人太过遥远了。

我在上面第一行已经写了英文原版编程的人名 Lauri Hartikka
原版是英文程序，如果懂编程的会知道，编程的步骤其实差不多，我用简单中文解释下行吧，
如果不行，就稍微改改里面一些 code， 就变成自己的了

你这个不是从别处搬运过来的吧? 如果是原创的话，建议整理一下，可以获取不少merit呢，如果是搬运过来的，建议注明出处，不然小心被别人举报，这个论坛的管理者们很反感copy行为的，即便你是从别的网站copy过来的，也可能被btt上的一些专门为了邀功获取merit的人抓住，然后举报以获取奖励。
当然，如果你是原创，大可不必考虑这个。

赞技术贴，也想学习一下！

支持楼主，难得的技术贴，论坛的风气会越来越好的。

多谢指点

Error: Could not locate the bindings file. Tried:

找不到file，你可试试复制 file 到
/home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node

Error ECONNRESET： node 没连好
可参考这个链接
https://bitcointalk.org/index.php?topic=641696.1920;imode

其实是不是就是个链表结构而已

大佬，我在建一个矿池，下不去，能帮忙看一下吗

/Desktop/project02/pool$ node init.js
2018-02-10 17:48:30 [master] Pool spawned on 4 thread(s)
2018-02-10 17:48:30 [api] API started & listening on port 8117
2018-02-10 17:48:30 [payments] Started
2018-02-10 17:48:30 [unlocker] Started
2018-02-10 17:48:30 [api] Error getting daemon data {"code":"ECONNRESET","errno":"ECONNRESET","syscall":"read"}
2018-02-10 17:48:30 [api] Stat collection finished: NaN ms redis, 69 ms daemon
2018-02-10 17:48:30 [api] Error collecting all stats
2018-02-10 17:48:30 [payments] No workers' balances reached the minimum payment threshold
2018-02-10 17:48:30 [unlocker] No blocks candidates in redis
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
2018-02-10 17:48:31 [master] Pool fork 1 died, spawning replacement worker...
2018-02-10 17:48:31 [master] Pool fork 3 died, spawning replacement worker...
2018-02-10 17:48:31 [master] Pool fork 4 died, spawning replacement worker...
2018-02-10 17:48:31 [master] Pool fork 2 died, spawning replacement worker...
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
2018-02-10 17:48:33 [master] Pool fork 4 died, spawning replacement worker...
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
2018-02-10 17:48:33 [master] Pool fork 2 died, spawning replacement worker...
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
2018-02-10 17:48:33 [master] Pool fork 1 died, spawning replacement worker...
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
2018-02-10 17:48:33 [master] Pool fork 3 died, spawning replacement worker...
2018-02-10 17:48:35 [api] Error getting daemon data {"code":"ECONNRESET","errno":"ECONNRESET","syscall":"read"}
2018-02-10 17:48:35 [api] Stat collection finished: NaN ms redis, 6 ms daemon
2018-02-10 17:48:35 [api] Error collecting all stats
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
2018-02-10 17:48:35 [master] Pool fork 4 died, spawning replacement worker...
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Debug/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/out/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/Release/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/build/default/multihashing.node
 → /home/tony/Desktop/project02/pool/node_modules/multi-hashing/compiled/4.2.6/linux/x64/multihashing.node
    at bindings (/home/tony/Desktop/project02/pool/node_modules/bindings/bindings.js:93:9)
    at Object. (/home/tony/Desktop/project02/pool/node_modules/multi-hashing/index.js:1:99)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object. (/home/tony/Desktop/project02/pool/lib/pool.js:7:20)
    at Module._compile (module.js:410:26)
2018-02-10 17:48:35 [master] Pool fork 2 died, spawning replacement worker...
2018-02-10 17:48:35 [master] Pool fork 1 died, spawning replacement worker...
^Z
[1]+  Stopped                 node init.js

区块连是由一个个区块组成，那么在编写区块连之前要先把区块逻辑，下面是区块编辑的简单Java 程序，原程序来自英文原编 Lauri Hartikka
对编程感兴趣的可以参考下

第一个逻辑步骤是决定块结构。
这个块中必须能找到前一个块的哈希值(hash)，以此来保证整条链的完整性。



class Block {
    constructor(index, previousHash, timestamp, data, hash) {
        this.index = index;
        this.previousHash = previousHash.toString();
//这一步很重要，起到区块链接功能
        this.timestamp = timestamp;
//输入的时间
        this.data = data;
//用户提供的资料
        this.hash = hash.toString();
    }
}


块哈希
var calculateHash = (index, previousHash, timestamp, data) => {
    return CryptoJS.SHA256(index + previousHash + timestamp + data).toString();
};

为了保存完整的数据，必须哈希区块。SHA-256会对块的内容进行加密，
记录这个值应该和“挖矿”毫无关系，因为这里不需要解决工作量证明的问题。

块的生成
var generateNextBlock = (blockData) => {
    var previousBlock = getLatestBlock();
    var nextIndex = previousBlock.index + 1;
    var nextTimestamp = new Date().getTime() / 1000;
    var nextHash = calculateHash(nextIndex, previousBlock.hash, nextTimestamp, blockData);
    return new Block(nextIndex, previousBlock.hash, nextTimestamp, blockData, nextHash);
};

要生成一个块，必须知道前一个块的哈希值，然后创造其余所需的内容（= index, hash, data and timestamp）。
块的data部分是由用户所提供，这样一个签单的块就编写完了。