What Are the Key Technical Requirements for a Blockchain to Implement AuxPoW?

The key technical requirements for a blockchain to implement AuxPoW include using the same hashing algorithm as the primary chain, as the hash generated must satisfy the difficulty of both chains. The secondary chain's block header must be structured to be easily included in the primary chain's block.

Crucially, the primary chain's protocol must be compatible and allow the inclusion of the secondary chain's proof of work, which is not always the case without a hard fork. The secondary chain also needs a mechanism to verify the primary chain's proof of work.

How Does Hashing Relate to the Concept of a Merkle Tree in a Blockchain?
What Security Measures Can Smaller PoW Coins Implement to Mitigate the Risk of a 51% Attack?
Does the Use of AuxPoW Slow down the Block Production of the Primary Chain?
What Is the Difference between a Soft Fork and a Hard Fork in Relation to Block Size Changes?
How Does Proof-of-Activity Address the Energy Consumption Issue of Pure Proof-of-Work?
What Is “Merged Mining” and How Is It Related to AuxPoW?
How Do Merged Mining and Auxiliary Proof-of-Work (AuxPoW) Help Secure Smaller Coins?
How Does the Energy Consumption of Proof-of-Activity Compare to That of Proof-of-Work and Proof-of-Stake?

Glossar