I don't know if the dev team has already looked into this, but this might be an option.
I recently read this article about a coin called SUQA : https://medium.com/@suqa/important-announcement-1a5f491b66b6 . In the article they state : "On November 20th 2018, Cryptopia denied listing SUQA on the basis of SUQA blockchain being susceptible to 51% attacks...everyone has to face at some point in crypto is that 51% attacks are REAL and it can easily disrupt a blockchain and devalue its currency. Since Cryptopia wallets already got hacked 3 times, we have to step in...We’ve established a partnership with Komodo in order to prevent such attacks using their state of the art Delayed Proof of Work (DPoW) cryptocurrency consensus mechanism. We are also preparing an in depth article explaining what a 51% attack is, and how SUQA is prepared to prevent one." The article was published 3 days ago, on December 7th.
The Bitcore team has already interacted with Komodo before, because that's the blockchain to which BTX made their first atomic swap transaction : https://twitter.com/Bitcore_BTX/status/994010991578017792
this might be an option to look into.
I was about to suggest that myself. Delayed Proof of Work (DPoW) has recently been integrated in EMC2 after it had suffered several 51% attacks, and now EMC2 is considered to be a safe coin and it has been removed from this site https://www.crypto51.app/
BTX should consider going the same way.