Proof of Type

Proof that a human typed it — not AI

The concept, and why it matters.

The problem

Since the moment we first played with generative AI, it was clear the internet would be flooded with machine-written text. A large and growing share of what you read online was never typed by a person — and, with visuals aside, you usually can’t tell the difference.

The idea

A Proof of Type is a verifiable link that shows a post was typed, in real time, by a human — not pasted from an LLM and not pushed by a bot. It doesn’t judge what you write; it attests how it was written: by human hands, key by key.

How it works

You type your post on proofoftype.com — a place where only humans can type: no pasting, no AI, no bots. Posting requires a hardware-level human check on your own device. When you’re done, you get a Proof of Type link to share alongside your words, wherever you post them.

The promise

If you see a Proof of Type link, you know you can relax and enjoy reading genuine human thoughts.

From the founder
Proof of Type It was clear from the moment we first played with GPT, that we're going to be flooded with AI written posts. Already—content online is 50—50. (em—dash—are—safe—again) How important is to you—to know if what you're reading is typed by a human? putting visuals aside for now. To be sure it was typed by a human, we need a Proof of Type, to know it wasn't pasted from an LLM or pushed by a bot. You can get that Proof of Type as a link when you type first on ProofOfType.com, where only humans type and paste your post with the link. P.O.T is built to prevent bots or AI to post and requires human hardware level ID. TL;DR If you see a post with a ProofOfType link, you'll know you can enjoy reading human thoughts. Yogi.
— Yogev Shelly · see the proof →