Auxiliary Proof of Work (AuxPoW) is a mechanism that allows a blockchain to secure itself by leveraging the hashing power of an external network. This method enables smaller cryptocurrencies to benefit from the security and stability of a larger, more established blockchain, typically Bitcoin.In an AuxPoW system, miners from the larger network can also mine the smaller blockchain without having to invest in separate mining efforts. When a miner successfully mines a block on the larger blockchain, they can also create a corresponding block on the smaller one. This is done by including the smaller blockchain’s information in the larger one, effectively “anchoring” it.This dual mining process helps the smaller blockchain gain security and legitimacy, as its transactions are confirmed by the robust network of the larger coin. AuxPoW is particularly useful for new or less popular cryptocurrencies that seek to enhance their resilience against attacks and improve transaction validation efficiency.