The best, most experienced blockchain developers with years of experience usually have a different background to your average applicant for a software development role.  They're likely to fall into several of the categories below:  

📀 they get obsessed with technology early on and like to work on new things  

😠 they have strong opinions about traditional finance, and those opinions may transfer over into other areas  

😵‍💫 they're risk takers - after all they sank hours of their time into a technology well before its worth became globally apparent  

🤑 they've got a bit more spare capital sitting around than the usual candidate, so they're not (as) desperate for a job.  

🤐 they're concerned about security and privacy 

And there are plenty of wacky or unusual projects out there to catch their attention.  So if you put them through the usual corporate bullsh*t of grueling condescending interviews and pointless "do this at home" tasks, or ask them to copy/paste the resume they sent you (if they even bothered with that) into yet another recruitment portal, they'll walk away.  In other words, it's a seller's market, you're the buyer, and you're going to have to rethink your strategy.