Proving a Human Wrote Something with Semoi and Keystroke Tracking

I use AI daily for coding but prefer writing my own words to keep my mind sharp. To address the question of how to prove human authorship, I created Semoi, an Obsidian plugin that cryptographically signs the time and keystrokes used to write a document. This system verifies that a piece was typed by a human over time rather than generated instantly by an LLM, offering a simple, privacy-focused way to distinguish genuine effort from automated output.