Apparently you missed my point entirely when using those examples - I could have picked any arbitrary item that was created by someone else and claim ownership/

Apparently you missed my point entirely when using those examples - I could have picked any arbitrary item that was created by someone else and claim ownership/creatorship In the end, it comes down to a "he said, she said" problem - especially given, for example, 2 of those 3 were published within my lifetime Lawsuits arise all the time over creation rights (eg the lawsuit against Zuckerburg over who "actually" created Facebook) - so no, mere "historical evidence and publishing records" are not sufficient on their own to determine creatorship