Easily accessible by anyone, even you.
My failure to provide it to you does not mean that it does not exist.
My failure, for example, to provide and explain the Principia Mathematica in a discussion about gravity, for example, does not mean that the underlying scientific proof of gravity doesn't exist. It just means I haven't provided it for you.
Same thing here. It's right at your fingertips, but you refuse to find out FOR YOURSELF. It's easily verifiable.
Ipse dixit would mean I want you to rely on me as the authority. I DO NOT. I specifically want you to FIND OUT FOR YOURSELF, to avail yourself of information that is seconds away with almost zero effort. That's the polar opposite of Ipse dixit.