Delayed Proof of Work (dPoW) is a consensus mechanism that enhances the security of blockchain networks by leveraging the hashing power of a more established blockchain to protect a less secure one. In dPoW, transactions are initially validated on a primary blockchain, such as Bitcoin, before being recorded on a secondary blockchain, like Komodo. This process creates a "checkpoint" on the primary chain, ensuring the integrity of the transactions on the secondary chain.

The dPoW mechanism involves periodically notarizing the state of the secondary chain onto the primary chain through a process known as notarization. This notarization provides a layer of security for the secondary chain by linking it to the robust security of the primary chain. In case of a potential attack on the secondary chain, the notarization mechanism allows for the restoration of the chain's state from the last notarized checkpoint, effectively rolling back any malicious changes.

By utilizing dPoW, blockchain projects can benefit from the enhanced security and immutability provided by established chains like Bitcoin, without requiring the same level of hashing power. This dPoW effectively creates a backup mechanism for blockchain networks, offering protection against 51% attacks and other security threats. The notarization process ensures that the history of transactions on the secondary chain is secured and tamper-proof, as any discrepancies can be detected and resolved by referencing the notarized checkpoints on the primary chain.

Overall, Delayed Proof of Work is a powerful security mechanism that enhances the resilience of blockchain networks, especially those with lower hashing power. By leveraging the security of established blockchains, dPoW provides a cost-effective and efficient way to safeguard the integrity of transactions and data on interconnected blockchain networks.