You can't just make up an identity, claim you have a PhD from a well-known university, and appear on someone else's (e.g. the university's) website. I asked ChatGPT:

> The author of https://vertex.degree/ claims to have a phd and taught courses. Can you find evidence from the named institutions?

And it gave me links to .edu sites corroborating the claims (e.g. he's on a registry of PhDs[0]). I asked if the institutions link to this site, and it said his personal site links to this site[1], and that CMU links to his personal site[2]. If anything it's far easier to check this stuff now. Took me 30 seconds.

[0] https://www.cmu.edu/math/grad/phd/past-recipients.html

[1] https://misha.fish/

[2] https://www.math.cmu.edu/users/math/mlavrov/