实验 1 熟悉 Bitcoin Core 的基本配置方法
1.1 熟悉比特币客户端的配置方法
本实验在Linux下完成配置
在Ubuntu中依次执行：
mkdir /wallet cd /walletwget https://bitcoincore.org/bin/bitcoin-core-0 .15.2 /bitcoin-0 .15.2 -x86_64-linux-gnu .tar.gzcd bitcoin-0 .15.2 /binln -s /home/skye/Desktop/wallet/bitcoin-0 .15.2 /bin/bitcoind /usr/bin/bitcoind ln -s /home/skye/Desktop/wallet/bitcoin-0 .15.2 /bin/bitcoin-cli /usr/bin/bitcoin-cli ln -s /home/skye/Desktop/wallet/bitcoin-0 .15.2 /bin/bitcoin-qt /usr/bin/bitcoin-qt
成功安装好：
在根目录下新建.bitcoin,新建bitcoin.conf文件，文件内容如下（这里是做完后续实验的截图，regtest文件夹是下一步生成的）：
运行bitcoind，regtest文件夹中内容如下：
打开日志文件debug.log
2022-09-28 12:09:23 Bitcoin version v0.15.2 2022-09-28 12:09:23 InitParameterInteraction: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1 2022-09-28 12:09:23 Validating signatures for all blocks. 2022-09-28 12:09:23 Setting nMinimumChainWork=0000000000000000000000000000000000000000000000000000000000000000 2022-09-28 12:09:23 Using the 'standard' SHA256 implementation 2022-09-28 12:09:23 Using RdRand as an additional entropy source 2022-09-28 12:09:23 Default data directory /root/.bitcoin 2022-09-28 12:09:23 Using data directory /root/.bitcoin/regtest 2022-09-28 12:09:23 Using config file /root/.bitcoin/bitcoin.conf 2022-09-28 12:09:23 Using at most 125 automatic connections (1024 file descriptors available) 2022-09-28 12:09:23 Using 16 MiB out of 32/2 requested for signature cache, able to store 524288 elements 2022-09-28 12:09:23 Using 16 MiB out of 32/2 requested for script execution cache, able to store 524288 elements 2022-09-28 12:09:23 Using 4 threads for script verification 2022-09-28 12:09:23 scheduler thread start 2022-09-28 12:09:23 HTTP: creating work queue of depth 16 2022-09-28 12:09:23 No rpcpassword set - using random cookie authentication 2022-09-28 12:09:23 Generated RPC authentication cookie /root/.bitcoin/regtest/.cookie 2022-09-28 12:09:23 HTTP: starting 4 worker threads 2022-09-28 12:09:23 init message: Verifying wallet(s)... 2022-09-28 12:09:23 Using BerkeleyDB version Berkeley DB 4.8.30: (April 9, 2010) 2022-09-28 12:09:23 Using wallet wallet.dat 2022-09-28 12:09:23 CDBEnv::Open: LogDir=/root/.bitcoin/regtest/database ErrorFile=/root/.bitcoin/regtest/db.log 2022-09-28 12:09:23 Cache configuration: 2022-09-28 12:09:23 * Using 2.0MiB for block index database 2022-09-28 12:09:23 * Using 8.0MiB for chain state database 2022-09-28 12:09:23 * Using 440.0MiB for in-memory UTXO set (plus up to 286.1MiB of unused mempool space) 2022-09-28 12:09:23 init message: Loading block index... 2022-09-28 12:09:23 Opening LevelDB in /root/.bitcoin/regtest/blocks/index 2022-09-28 12:09:23 Opened LevelDB successfully 2022-09-28 12:09:23 Using obfuscation key for /root/.bitcoin/regtest/blocks/index: 0000000000000000 2022-09-28 12:09:23 LoadBlockIndexDB: last block file = 0 2022-09-28 12:09:23 LoadBlockIndexDB: last block file info: CBlockFileInfo(blocks=0, size=0, heights=0...0, time=1970-01-01...1970-01-01) 2022-09-28 12:09:23 Checking all blk files are present... 2022-09-28 12:09:23 LoadBlockIndexDB: transaction index disabled 2022-09-28 12:09:23 Initializing databases...a 2022-09-28 12:09:23 Pre-allocating up to position 0x1000000 in blk00000.dat 2022-09-28 12:09:23 Opening LevelDB in /root/.bitcoin/regtest/chainstate 2022-09-28 12:09:23 Opened LevelDB successfully 2022-09-28 12:09:23 Using obfuscation key for /root/.bitcoin/regtest/chainstate: 358c63173439fcc5 2022-09-28 12:09:23 init message: Rewinding blocks... 2022-09-28 12:09:23 block index 20ms 2022-09-28 12:09:23 init message: Loading wallet... 2022-09-28 12:09:23 nFileVersion = 150200 2022-09-28 12:09:23 Keys: 2002 plaintext, 0 encrypted, 2002 w/ metadata, 2002 total 2022-09-28 12:09:23 wallet 51ms 2022-09-28 12:09:23 setKeyPool.size() = 2000 2022-09-28 12:09:23 mapWallet.size() = 0 2022-09-28 12:09:23 mapAddressBook.size() = 1 2022-09-28 12:09:23 UpdateTip: new best=0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206 height=0 version=0x00000001 log2_work=1 tx=1 date='2011-02-02 23:16:42' progress=1.000000 cache=0.0MiB(0txo) 2022-09-28 12:09:23 Failed to open mempool file from disk. Continuing anyway. 2022-09-28 12:09:23 mapBlockIndex.size() = 1 2022-09-28 12:09:23 nBestHeight = 0 2022-09-28 12:09:23 torcontrol thread start 2022-09-28 12:09:23 Bound to [::]:18444 2022-09-28 12:09:23 Bound to 0.0.0.0:18444 2022-09-28 12:09:23 init message: Loading P2P addresses... 2022-09-28 12:09:23 Loaded 0 addresses from peers.dat 0ms 2022-09-28 12:09:23 init message: Loading banlist... 2022-09-28 12:09:23 init message: Starting network threads... 2022-09-28 12:09:23 net thread start 2022-09-28 12:09:23 dnsseed thread start 2022-09-28 12:09:23 Loading addresses from DNS seeds (could take a while) 2022-09-28 12:09:23 0 addresses found from DNS seeds 2022-09-28 12:09:23 dnsseed thread exit 2022-09-28 12:09:23 addcon thread start 2022-09-28 12:09:23 opencon thread start 2022-09-28 12:09:23 init message: Done loading 2022-09-28 12:09:23 msghand thread start 2022-09-28 12:10:24 Adding fixed seed nodes as DNS doesn't seem to be available.
测试中为存储链上交易状态初始化的数据空间是多少？
2022-09-28 12:09:23 * Using 2.0MiB for block index database 2022-09-28 12:09:23 * Using 8.0MiB for chain state database
可以看到是8.0MIB
初始化过程中，节点钱包密钥池最终保存了多少对密钥？
2022-09-28 12:09:23 setKeyPool.size() = 2000
2000对
简述回归测试模式下，程序添加 P2P 节点的步骤
在区块链中增加新的区块并与ip端口绑定，之后加载P2P地址，重建peers.dat和banlist.dat；启动网线程,完成加载,然后开启其他线程,寻找新鲜的更新信息,最后接受版本信息。
1.2 学习 bitcoin.conf 的配置方法
实验 2 掌握常用 RPC 指令，利用回归测试网络实现挖矿与交易
linux中命令简写：
alias alice-d='bitcoind -regtest -conf=/root/.bitcoin/alice/bitcoin.conf -datadir=/root/.bitcoin/alice $*' alias bob-d='bitcoind -regtest -datadir=/root/.bitcoin/bob $*' alias network-d='bitcoind -regtest -datadir=/root/.bitcoin/network $*' alias alice-cli='bitcoin-cli -regtest -conf=/root/.bitcoin/alice/bitcoin.conf -datadir=/root/.bitcoin/alice $*' alias bob-cli='bitcoin-cli -regtest -conf=/root/.bitcoin/bob/bitcoin.conf -datadir=/root/.bitcoin/bob $*' alias network-cli='bitcoin-cli -regtest -conf=/root/.bitcoin/network/bitcoin.conf -datadir=/root/.bitcoin/network $*' alias alice-qt=bitcoin-qt -regtest -datadir=/root/.bitcoin/alice $* alias bob-qt=bitcoin-qt -regtest -datadir=/root/.bitcoin/bob $* alias network-qt=bitcoin-qt -regtest -datadir=/root/.bitcoin/network $*
注意-conf后面对应的是刚刚配置文件的路径，要读取rpcuser rpcpassword,找不到就会报错
同时启动四个终端：
进行交易的步骤：
alice生成余额：
root@skye-vm:/home/skye# alice-cli generate 150 [ ....这里有150条 ] root@skye-vm:/home/skye# alice-cli getbalance 2500.00000000
生成交易，由 alice 分别支付给 bob 2.5BTC，network 1.5BTC，并使交易入块获得确认；
分别查询network和bob的地址，支付给他们，bob再挖一块确认，最后查看余额
root@skye-vm:/home/skye# alice-cli getnewaddress mgQnJdZhzPw3y5jfzoibM1kMA8Rc3huyyt root@skye-vm:/home/skye# bob-cli getnewaddress mobmsBsg7NMXVRzHsisp4gtBUtorNZY1yk root@skye-vm:/home/skye# network-cli getnewaddress mvo34utYwAKmRY2sPiwE6mc8yBPaSocUYu root@skye-vm:/home/skye# alice-cli sendtoaddress "mobmsBsg7NMXVRzHsisp4gtBUtorNZY1yk" 1.5 6be8d1fb847daaf2f668ff41f99168173a9af8eb7ce5635e9921a6a9c7ac40d4 root@skye-vm:/home/skye# alice-cli sendtoaddress "mvo34utYwAKmRY2sPiwE6mc8yBPaSocUYu" 2.5 0c691ad0b9134650eea5dd6ee20dba25c3120acc81b1b9a798522d0e4da571c9 root@skye-vm:/home/skye# bob-cli generate 1 [ "7f3ec2a1e50f138eb8311b0dfc1d48287a64246545ad2fd2c3c17488e3fef828" ] root@skye-vm:/home/skye# bob-cli listaccounts { "": 1.50000000 } root@skye-vm:/home/skye# network-cli listaccounts { "": 2.50000000 }
实验
输入命令：
可以看到两个交易的基本情况如图，包括交易id，交易序号，输出包含交易值，scrippubkey等，第一个交易数据量大小为0.10000000，第二个为0.09890000
Author:
紫炁
License:
Copyright (c) 2019 CC-BY-NC-4.0 LICENSE
Slogan:
Do you believe in DESTINY ?
