参考我写的文章：区块链学习指南

二、项目组成

1、迷你区块链客户端 2、迷你区块链浏览器（独立）

三、使用方法

Step1：启动迷你区块链客户端（模拟 3 个节点）

测试 demo 中一共使用 3 个节点，大家可以根据需要自己调节。

python run.py -p 5000 &

python run.py -p 5001 &

python run.py -p 5002 &

Step2：模拟交易

执行：python simulation_test.py

模拟节点之间的交易行为，启动后大家可以看到有交易输出。

Step3：迷你区块链的 json api 接口调用

区块链客户端实现了 json api，可以直接通过 api 调用来获取各个节点之间的信息： （ 1 ）获取区块链高度

请求：

http://127.0.0.1:5001/height

返回：

{"code": 0, "value": 2}

（ 2 ）获取钱包余额

请求：

http://127.0.0.1:5001/balance?address=3Q7KKThJr5qcT7hM189AkVtqYLS8

返回：

{ "address": "3Q7KKThJr5qcT7hM189AkVtqYLS8", "balance": 24 } 

（ 3 ）获取区块信息

请求：

http://127.0.0.1:5001/block_info?height=1

返回：

{ "current_hash": "00003b4ff8851ab57625b8d6a432c9288659ce91f52a5b1854b37a34c07ffee8", "difficulty": 4, "index": 0, "merkleroot": "24b486df77c70ba076f92e1ccd078f8073d596c73a29baf0a8f3aea948a54815", "nonce": 7534, "previous_hash": "00000000000000000000000000000000000000000000000000000000000000", "timestamp": 1496518102, "transactions": [ { "amount": 0, "receivers": [ { "receiver": "23DvZ2MzRoGhQk4vSUDcVsvJDEVb", "value": 100 } ], "senders": [], "timestamp": 1496518102, "txid": "ab9d943d8c126189f80484a0c8ade846038797968bf90fd1ed9e88f2f46f54fa" } ] } 

（ 4 ）创建一笔交易 请求： http://127.0.0.1:5000/transactions/new

{ 'amount': 1, 'sender': u'23DvZ2MzRoGhQk4vSUDcVsvJDEVb', 'receiver': u'2dgzLQJgWKhdt3ETnf3tFA9m4ZpK' } 

返回：

{ "message": "new transaction been created successfully!", "current_transactions": [ { "timestamp": 1538373019, "txouts": [ { "value": 30, "scriptPubKey": [ "OP_DUP", "OP_HASH160", "752f3a7934aa60d041250346e24b1d7a2886dbb0", "OP_EQUALVERIFY", "OP_CHECKSIG" ] }, { "value": 14, "scriptPubKey": [ "OP_DUP", "OP_HASH160", "ac280f709f81ec4eca086f1abfd0f3bec8baf395", "OP_EQUALVERIFY", "OP_CHECKSIG" ] } ], "txins": [ { "prev_tx_out_idx": 1, "pubkey_hash": "ac280f709f81ec4eca086f1abfd0f3bec8baf395", "prev_txid": "2f096e332b2371cd141d1f279c35fb820e3e5256c1a071c5a49636c2fcd9be3d", "signature": "e751d626ef0c147455ef0487b85f108ba56be57575f5133341e5e638dc697f94" } ], "txid": "8851e30bd03cd81b396df1904a17a87b89a30092a92572f7a66fce7a25a634c4" }, { "timestamp": 1538373058, "txouts": [ { "value": 9, "scriptPubKey": [ "OP_DUP", "OP_HASH160", "752f3a7934aa60d041250346e24b1d7a2886dbb0", "OP_EQUALVERIFY", "OP_CHECKSIG" ] }, { "value": 46, "scriptPubKey": [ "OP_DUP", "OP_HASH160", "4a879c658a42fc162f8cb3c740a4e0c4b63e80de", "OP_EQUALVERIFY", "OP_CHECKSIG" ] } ], "txins": [ { "prev_tx_out_idx": 0, "pubkey_hash": "4a879c658a42fc162f8cb3c740a4e0c4b63e80de", "prev_txid": "2f096e332b2371cd141d1f279c35fb820e3e5256c1a071c5a49636c2fcd9be3d", "signature": "0ff0b888d0dd468f1c6e37d1ab13d17f63747346dc0105b5e4974be71023079f" }, { "prev_tx_out_idx": 0, "pubkey_hash": "4a879c658a42fc162f8cb3c740a4e0c4b63e80de", "prev_txid": "72fb55e194e4d7dc71ab020483c61737c6a5b2e2474480cac4187f0633961423", "signature": "de72585b9c7c6a47d1adc2851244232581cc5f3e0a4633d754736677bdea0a57" }, { "prev_tx_out_idx": 1, "pubkey_hash": "4a879c658a42fc162f8cb3c740a4e0c4b63e80de", "prev_txid": "3bc92a17262ce2cc1fe7f34ef946fd10e0b9667f223b697bfaf520e5f443be11", "signature": "2871832295c53372ee44d9950676cb4675506676a9dce04db54e48b72b40a2b1" } ], "txid": "252d4e493ff514e87f3c00d9adcb635aba5f7c3b7890b7ccc1e17d73c23d1bf4" }, { "timestamp": 1538373093, "txouts": [ { "value": 10, "scriptPubKey": [ "OP_DUP", "OP_HASH160", "ac280f709f81ec4eca086f1abfd0f3bec8baf395", "OP_EQUALVERIFY", "OP_CHECKSIG" ] }, { "value": 36, "scriptPubKey": [ "OP_DUP", "OP_HASH160", "4a879c658a42fc162f8cb3c740a4e0c4b63e80de", "OP_EQUALVERIFY", "OP_CHECKSIG" ] } ], "txins": [ { "prev_tx_out_idx": 1, "pubkey_hash": "4a879c658a42fc162f8cb3c740a4e0c4b63e80de", "prev_txid": "252d4e493ff514e87f3c00d9adcb635aba5f7c3b7890b7ccc1e17d73c23d1bf4", "signature": "fc33dea5c178d38c4d98623e7a0fe881b9c6268088788b34c81b4b49a1cbe385" } ], "txid": "31cabe8dd4c9b7b03b9159409bc1929acbcefe361099bad5839c17cce497af8e" }, { "timestamp": 1538373570, "txouts": [ { "value": 1, "scriptPubKey": [ "OP_DUP", "OP_HASH160", "752f3a7934aa60d041250346e24b1d7a2886dbb0", "OP_EQUALVERIFY", "OP_CHECKSIG" ] }, { "value": 35, "scriptPubKey": [ "OP_DUP", "OP_HASH160", "4a879c658a42fc162f8cb3c740a4e0c4b63e80de", "OP_EQUALVERIFY", "OP_CHECKSIG" ] } ], "txins": [ { "prev_tx_out_idx": 1, "pubkey_hash": "4a879c658a42fc162f8cb3c740a4e0c4b63e80de", "prev_txid": "31cabe8dd4c9b7b03b9159409bc1929acbcefe361099bad5839c17cce497af8e", "signature": "adf76d1f32fb122fe2551b3e3059d64d9d11787f58cea37ec8e7ff1b3b540dd7" } ], "txid": "5bc1e91e8156710706934ee109976a71bdbac04b0d83e081844decb2a4d6ed15" } ] } ------ 

Step4：迷你区块链浏览器

当然，如果不想用接口来查看去快练心性，可以通过区块链浏览器来查看，只需将 mini_blockchain 下的 browser 文件夹移到 nginx 的 www 目录下，打开如下网址即可： http://127.0.0.1/browser