He didn't say it "is" public domain, he said its been in the public domain, because nobody was too big of an ass to attempt to copyright it until Craig came along.
Correct. It is in the public domain and has been widely distributed.
Craig is not the only copyright claimant either. One applicant is claiming copyright twice.
https://cocatalog.loc.gov/cgi-bin/Pwebrecon.cgi?Search_Arg=Bitcoin%3A+A+Peer-to-Peer+Electronic+Cash+System.&Search_Code=TALL&PID=i-DenTaQ3xvpRNBNlGGoCYj6Rrggc&SEQ=20191030033213&CNT=25&HIST=1
Satoshi into lawn care ?
This is where it also gets interesting because:
Section 102 (b) of the copyright code states:
Quote
In no case does copyright protection for an original work of authorship extend to any idea, procedure, process, system, method of operation, concept, principle, or discovery, regardless of the form in which it is described, explained,illustrated, or embodied in such work.