以下关于区块链所用系统中“挖矿”行为的描述中，错误的是( )
- A.“挖矿”取得区块链的记账权，同时获得代币奖励
- B.“挖矿”本质上是在尝试计算一个Hash碰撞
- C.“挖矿”是一种工作量证明机制
- D.可以防止比特币的双花攻击
正确答案及解析
正确答案
解析
挖矿就是记账的过程，矿工是记账员，区块链就是账本。挖矿算法的实质就是哈希算法。其中pow挖矿算法就是工作量证明算法。UTXO机制和区块链的共识机制以及“多次确认”机制来防止双花攻击。
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