What about

this?

this

and this?

Here's the law regarding soliciting CP:

(B) advertises, promotes, presents, distributes, or solicits through the mails, or using any means or facility of interstate or foreign commerce or in or affecting interstate or foreign commerce by any means, including by computer, any material or purported material in a manner that reflects the belief, or that is intended to cause another to believe, that the material or purported material is, or contains—

(i) an obscene visual depiction of a minor engaging in sexually explicit conduct; or

(ii) a visual depiction of an actual minor engaging in sexually explicit conduct;

sauce

From Voat's User Agreement:

You may not use Voat to break the law

Conclusion: Soliciting (asking for) child porn from other people on the internet is illegal. Therefore, @theoldones has used voat to break the law.