Not sure if anyone has already attempted this but I signed up for a paid account at domaintools.com to run a whois history report on scryptpools.com. I figured it may have been possible that the whois protection was added on after registering the domain rather than at the same time.
I was able to find 5 historical changes to the whois records but unfortunately none of them contained any personal details, only DNS changes between CloudFlare and the registrar.
If there are any other domains that may be linked to this guy please provide the details and I can attempt to run a history report.