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Just Show Up

Sybil resistance through physical presence

Alex Applebee & L. N. Combe

OMXUS Publishing — 680 words

Safety

Just Show Up

OMXUS Research Series — this paper of 33

The kitchen-table version of (Applebee & Combe, 2026, "Be In The Same Room")


How do you prove you're real?

Worldcoin wants to scan your eyeball with a $5,000 metal orb. BrightID wants you to build a social graph. Proof of Humanity wants you to submit a video to a decentralized court. Every crypto project has some elaborate, clever, expensive answer to the question.

Here's ours: be in the same room as three other people for one hour.

That's it.


How It Works

Four times a year — same hour, same day, everywhere on Earth — you stand in a room with at least three other verified humans. Could be your living room. Could be a pub. Could be a park bench. Doesn't matter where. Your phones confirm you were all there for the full 60 minutes via Bluetooth. Everyone signs off on the head count. Done. You exist for another quarter.

Miss the count? Your token goes dormant. Get verified again.

Vouch for someone who keeps not showing up? Your token degrades too. You vouched for a ghost.


Why It Works

Because Fred can't be in two places at once.

That's literally the whole security model. If every human on Earth is being counted in the same 60-minute window, Fred cannot show up as "Fred" in Sydney and also as "Frederick" in Brisbane. He has one body. Physics handles the rest.

Every other system fails because it lets you verify at different times. Different times means one person can appear as many people. Same time means one person is one person. Full stop.


"But What If—"

"I'm sick."
Call your neighbors. Press the emergency button on the mesh. Three people come to your kitchen table. Count happens there. If your neighbor won't come check on you when you're sick — that's exactly the problem this system fixes.

"60 minutes is too long."
You spend 2.5 hours a day on social media. This is 4 hours a year. Total.

"People won't do it."
Australians have shown up to vote since 1924. Over 90% turnout. The fine is $20. Your fine is losing your identity. Bit more motivating.

"8 billion people can't do this."
8 billion divided by 4 is 2 billion groups. All happening at the same time. Zero central coordination needed. It's the most scalable identity system ever designed because it has no server.


The Part Nobody Talks About

You have to spend an hour with your neighbors.

Four times a year, you stand in a room with real humans and confirm each other's existence. You'll learn their names. You'll end up talking. You might borrow sugar from them next month.

The entire system's "overhead" is: know the people near you.

People will complain about this. Right up until they realize it's the first time in years someone checked if they were alive.

The Sybil problem is the excuse. The connection is the point.


The Numbers

| System | Cost to fake one identity | Surveillance? | Works? |
|--------|--------------------------|---------------|--------|
| Worldcoin | One spoofed iris scan | Yes (biometric DB) | Kinda |
| BrightID | Some social engineering | Yes (social graph) | Sometimes |
| Proof of Humanity | One deepfake video | Yes (video DB) | For now |
| Just show up | 3 corrupted real humans, 4x/year | No | Physics says yes |


What Australia Already Knows

Mandatory voting. 1924. Show up, get counted, cast a ballot. 102 years. Nobody riots about it. Nobody calls it tyranny. It's just what you do.

We're not even asking for a ballot. We're asking you to stand in a room and say "I'm here." Four times a year. With people who live near you.

If that's too much to ask, the problem isn't the system.


The research version is (Applebee & Combe, 2026, "Be In The Same Room"). The physics is in the bibliography. Your neighbors are outside the door.

Published by OMXUS Publishing. Free to read. Free to share. Evidence is the credential.

Part of the OMXUS Research Series — 99 publications.

This paper serves:

#13 $29 ring. Press it, your people come in 60 seconds.

For Lily and Joshua.