Hacker News Reader

Yep clearly not obvious, I was also pondering if One Time Password. Would be a rare case where editoralizing the title could be handy

Not familiar with this area but also thought it was another tutorial about making an OTP authenticator.

If I had not know that Gleam was built on top of Beam I would have had no idea which OTP was referred to.

Yes, Gleam runs on the BEAM and has bindings for that OTP

Gleam reimplements (a large portion of) OTP and is interoperable with Erlang/Elixir code that uses OTP, rather than providing bindings.