Hmm, first time I've heard of it. They claim it's a sidechain. I've no clue if it's legit or not, but my initial reaction is always skepticism. I'll look into it though.
The closest and least invasive thing I've seen that maybe could work on Bitcoin (still a long shot) are drivechains like Paul Sztorcs "Ecash". Could have any crypto tech you want on Bitcoin as an optional sidechain. Monero sidechain, Ethereum sidechain, etc. If someone doesn't like it they can completely ignore it as a user/node/miner.
https://ecash.com/
