Yes, it is possible to have a protected identity.

It seems that you can have a protected address in Denmark as well. Apparently, the protected address is even a field in the current leak.

	▲	spragl 8 hours ago \| parent \| next [-]
		According to their announcement, the names and addresses of people with protected address, were not leaked.
	▲	mrweasel 9 hours ago \| parent \| prev [-]
		I worked on systems that has this, it would be funny if it wasn't putting people at risk. You can see the address, and then as you say there is a field that indicated that this is a protected address, so don't leak it,... unlike the others with you're then completely fine to leak?

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p-e-w 7 hours ago | parent | prev [-]

Ah, so the “open” system is actually a two-tier system where everyone’s information is equally open except for those who are more equal than the rest.