Delayed Proof-of-Work (dPoW)

From CryptoWiki

"The gargantuan power of the Bitcoin network is perhaps best understood by the amount of electricity it consumes. A study published by Dutch researcher Alex de Vries in May 2018 found that Bitcoin mining uses roughly the same amount of electricity as the entire nation of Ireland— that’s about 24 Terawatt hours of electricity per year. This means that every single hour, Bitcoin mining consumes 2.55 gigawatts of electricity.

While the environmental concerns surrounding this quantity of energy usage are important, we won’t get into that discussion here. The point is that the Bitcoin network is insanely powerful and will not be surpassed at any point in the foreseeable future.

So rather then competing with Bitcoin for the largest hash rate, why not simply take advantage of the protection Bitcoin’s enormous hash rate already provides?

That’s exactly what Komodo’s Delayed Proof of Work consensus mechanism does.

With Komodo’s security services, you can have your blockchain protected by with the power of the entire Bitcoin network. Global Bitcoin mining costs a staggering $400,000 USD per hour. But with Komodo, you can have the same level of security for a tiny fraction of a single percentage point of the cost."