merge mining

Namecoin pioneered merge mining, allowing Bitcoin miners to secure both chains simultaneously.Namecoin 开创了合并挖矿的先河，允许比特币矿工同时保护两条链。

Merge mining lets a smaller chain inherit security from a larger one without splitting the miner's hash rate.合并挖矿让较小的链继承较大链的安全性，而无需分割矿工的算力。