C++从零开始区块链：区块链业务模块之区块结构定义

区块链的对外展示主要是以json的形式，我们先来定义一下json，主要是说明格式，数据什么的我瞎写的。实际应用中应该加入一个随机值用作校验，这里就不加了

block = {
'index': 1,                                           //索引
'timestamp': 1506057125,                              //时间戳
'transactions': [                                     //交易列表，可以有多个交易
{ 
'sender': "8527147fe1f5426f9dd545de4b27ee00",        //付款方
'recipient': "a77f5cdfa2934df3954a5c7c7da5df1f",     //收款方
'amount': 5,                                         //金额
}
],
'proof': 324984774000,                               //工作量证明
'previous_hash': "2cf24dba5fb0a30e26e83b2ac5b"       //前一块的hash
}  

json对应的C++结构体

typedef struct __transactions
{
    std::string sender;
    std::string recipient;
    float amount;

    bool operator == (const struct __transactions & value) const
    {
        return
            this->sender == value.sender &&
            this->recipient == value.recipient &&
            this->amount == value.amount;
    }
}Transactions;

typedef struct __block
{
    int index;
    time_t timestamp;
    std::list<Transactions> lst_ts;
    long int proof;
    std::string previous_hash;

    bool operator == (const struct __block & value) const
    {
        return
            this->index == value.index &&
            this->timestamp == value.timestamp &&
            this->previous_hash == value.previous_hash &&
            this->lst_ts == value.lst_ts &&
            this->proof == value.proof;
    }
} Block;