I don't get it. You need someone who's WORKED on blockchain based tech so you can use their credentials to "sell" your product?
Or are you looking to hire a blockchain expert who'd represent your tech and spread it to their connections?

If its the first, then that's not only wrong, morally speaking, its also very scandalous.
It's better you come clean. Because if you want to hire people with substantial history in blockchain and cryptos to act as your product's mouthpiece - then that's understandable.