아직은 많이 조악한 내가 만든 블록체인 코드

"""
python version : python3.x
작성자 : 김준현
"""
import datetime as dtime # 블록의 생성 시간 리턴
import hashlib as hash # 블록의 해시 값 - sha 256
#---------------------------------------------------------------------------------------
class Block:

    def __init__(self, index, prev_hash, bits):
        self.version   = str(4901).encode(encoding='utf-8') # 블록 버전 정보 (4byte)
        self.index     = str(index).encode(encoding='utf-8') # Genesis 블록은 0
        self.prev_hash = str(prev_hash).encode(encoding='utf-8') # 이전 노드의 해시 (32byte)
        self.timestamp_ = str(dtime.datetime.now()).encode(encoding='utf-8')# 블록 생성시간 정보 (4byte)
        self.bits  = str(bits).encode(encoding='utf-8')# 증명의 난이도
        self.block_hash = str(self.retHash()).encode(encoding='utf-8')  # 블록 해시 (32byte)

    def retHash(self):
        sha256 = hash.sha256() # 객체 생성
        sha256.update(self.version + # 블록 버전 정보
                      self.index +
                      self.prev_hash + # 이전 블록의 해시
                      self.timestamp_ + # 블록 생성시간 정보
                      self.bits) # 증명의 난이도

        return sha256.hexdigest()

==================================================================

Genesis block 

#----------------------------------------------------
import blockClass as Bclass
import InsertMongoDB_HASH
#----------------------------------------------------
GenBlock = Bclass.Block(0, "None", 0)
print (GenBlock.version.decode(encoding='utf-8'))
print (GenBlock.timestamp_.decode(encoding='utf-8'))
print (GenBlock.prev_hash.decode(encoding='utf-8'))
print (GenBlock.block_hash.decode(encoding='utf-8'))
print (GenBlock.index.decode(encoding='utf-8'))

InsertMongoDB_HASH.Insert_blockInformation(GenBlock)

==================================================================

일반 블록

#----------------------------------------------------
import blockClass as Bclass
import InsertMongoDB_HASH
import RetPrevHash
import RetIndex
#----------------------------------------------------
temp_index = RetIndex.ret_index()
t = str(temp_index-1)
temp_prev_hash = RetPrevHash.ret_prev_block_hash(t)
normalBlock = Bclass.Block(temp_index, temp_prev_hash, 0) # index, prev_hash, bits
print (normalBlock.version.decode(encoding='utf-8'))
print (normalBlock.timestamp_.decode(encoding='utf-8'))
print (normalBlock.prev_hash.decode(encoding='utf-8'))
print (normalBlock.block_hash.decode(encoding='utf-8'))
print (normalBlock.index.decode(encoding='utf-8'))
#----------------------------------------------------
# // Block information mongodb insert
InsertMongoDB_HASH.Insert_blockInformation(normalBlock)
==========================================================
import pymongo
from pymongo import MongoClient
import pprint
#-----------------------------------------------
def ret_index():
    Client = MongoClient('localhost', 27017) # 객체 생성
    db = Client["test01"]
    # print (db)
    # print (db.collection_names())

    collection = db.users
    dictValue = collection.find()
    s = [ n for n in dictValue ]
    #print (s[len(s)-1])
    return int(s[len(s)-1]["index"])+1

===========================================================

from pymongo import MongoClient
def Insert_blockInformation(block):
    client = MongoClient('localhost', 27017) # 객체 생성
    db = client.test01
    users = db.users

    doc = {'_version'  : block.version.decode(encoding='utf-8'),
           '_timestamp': block.timestamp_.decode(encoding='utf-8'),
           'prev_hash' : block.prev_hash.decode(encoding='utf-8'),
           'block_hash': block.block_hash.decode(encoding='utf-8'),
           'index'     : block.index.decode(encoding='utf-8')}

    try:
            users.insert(doc)
    except:
        print("insert faild")

==========================================================
import pymongo
from pymongo import MongoClient
import pprint
#-----------------------------------------------
def ret_prev_block_hash(index):
    Client = MongoClient('localhost', 27017) # 객체 생성
    db = Client["test01"]
    # print (db)
    # print (db.collection_names())

    collection = db.users
    dictValue = collection.find({'index':index})

    print (dictValue[0]['block_hash'])
    return dictValue[0]['block_hash']