Picture this

Who it is for

Dr Okafor's clinic has forty walk ins on Saturday. Fair Queue gives each patient a spot onchain, shows the line live, and lets a parent pass their place to a grandmother who arrived late.

Two ways to own it

What you get

Base$139

$35 deposit to reserve

Join by QR, live line page, transfer place, staff console.

You choose: accent color
You choose: queue rules

Customfrom $1,000

Built around you

Reshape it entirely: new features, your flows, your brand end to end, integrations you need. We scope it with you.

Everything in Base
Custom features and design
Priority build

Why it is new

What exists today, and what this does differently

What is new

ThanQ (ETHGlobal) built a blockchain queue; transferable queue positions were not found.

Closest things out there

ThanQ (ETHGlobal Bangkok); digiQueue (off chain).

Checked with web searches in October 2026. A search is not proof that nothing similar exists, and the market moves fast, so we recheck before every build.

What it unlocks

The human in it

No more arguing about who was first.

The Regatta Board

Races it can enter

accelerator · Monad Foundation · upcoming

Monad builder programs (Monad Madness, Mach)

unknown

Official page ↗

Ecosystem program for shipped apps; check current terms.

Their rule on existing code: unknown

What you own

The whole app, not a starter kit.

The complete Fair Queue app: visitors join a line by QR, hold a place nobody can argue with, keep it when they step out, and pass it to someone they love, while names and symptoms never go onchain, with a paywall and line agent built in.

Base price · $139

The user app, complete

Every buyer gets the same finished app. Basic branding and copy changes come through a quick form.

Three step onboardingHome

Shown once: scan at the gate, step out and keep your place, hand it to someone you love.

Line status and next actionHome

Now serving, your place, wait and one next step.

Join by rotating gate codeLine

Scan or type the code that changes every few minutes at the gate.

Live line and ticketLine

The line drawn as footprints with your place ticket and code.

SMS when three awayLine

A text so visitors can wait outside. Gated behind Clinic.

Learned wait estimatesLine

Estimates by visit type within minutes of real waits. Gated behind Clinic.

Pass a placePass

Hand your place to a relative in one tap, one transfer per place.

Tout and no-show handlingPass

Extra places from one phone released; called and away gets a ping and grace.

Place receiptPass

Join and pass onchain on Monad; names and symptoms never.

Visit history and calendarVisits

Past Saturdays, waits and fewer arguments at the desk.

Priority rebookingVisits

People not seen get priority places next time. Gated behind Clinic.

Plans and USDC checkoutMe

Gate, Clinic and Street tiers through the shared USDC checkout.

Open the full app demo

Add-on

Owner console

Your admin side: revenue, paywall editor, users, rules and the agent log.

Revenue and paywall editorRevenue

MRR, incoming USDC, payment methods, tiers and gates.

Staff rulesRules

Capacity, grace, transfer policy, places per phone, gate code rotation and elder priority.

Line agent logAgent

The auto skip and tout failures and how the rules changed.

Roadmap build requestsRoadmap

v2 and v3 scopes with add-on prices.

Top-up

Growth and referrals

Referral and growth mechanics, switched on when you are ready to grow.

Pass share cardPass

Share the moment you passed a place.

Street pilot loopGrowth

Run a street pilot, pass loops, neighbour venues and referrals.

The money path, built in

How it earns for you

Visitors never pay; clinics and whole streets subscribe in USDC.

GateFreeOne desk, up to 40 places, QR join, pass a place, live line page

Clinic$29 a monthSMS alerts, learned wait estimates, priority rebooking, 3 desks

Street$149 a monthEvery venue on a street or market, shared visitors, one console

Roughly $0.05 to $0.10 per visitor in SMS and gas, paid by the venue plan.

Prices are yours to set. Illustrative, not a promise of income.

Growth loops, built in

How it spreads

Relatives who receive a passed place
Venues on the same street seeing each other's lines
The pass share card
Venue referrals

Roadmap · build the next phase with us

Where it goes next

v1 included

The full fair queue

Queue contract with join, pass, hold, move back and serve
Rotating gate QR
Live line page
Staff console
Rules, SMS and paywall

Included

Street network

Many venues on one street
Shared visitor sign in
Book ahead slots
WhatsApp line page

Add-on from $450

Public service lines

Government offices
Accessibility rules
Open wait data
Kiosk tickets

Add-on from $1,200

For investors and grant reviewers

The pitch, ready

A fair and kind line: your place is a record nobody can argue with, and you can hand it to someone you love.

Problem: Walk in clinics and offices waste hours, people lose their place for stepping out, and touts sell spots.

Solution: A queue contract with rotating gate codes, grace instead of skips, one place per phone and one transfer per place.

Why now: Monad makes per visitor contract calls cost a fraction of a cent, and every visitor has a phone.

Market: Clinics, offices, barbers and markets, from free to $149 a month for a whole street.

The ask: Four Saturday pilot with one Lagos clinic, then a street.

Funding is never guaranteed. Check each program's rules.

For hackathons and demo days

Your 2 minute demo

Home: Okafor Clinic's line opens.
Line: join with the gate code at place 7.
Pass: pass place 7 to Mama Efe stuck on the bridge.
Pass: a tout's extra places are released; a no-show gets grace.
Visits: fewer arguments; priority rebooking gated behind Clinic.
Owner Agent: the auto skip fix.
Owner Revenue: change the Clinic price.
Owner Growth: run a street pilot.

Many hackathons require code written at the event. See the Regatta Boardfor each race's rule.

Make it entirely yours

Multi desk routing, book ahead slots, kiosks and branded line pages, scoped on a call from $1,000.

Custom from $1,000

BLUEPRINT

Why it matters and how it really works

The need

Clinics, barbers and food spots with walk in lines run on paper lists and memory. People argue about who came first, anyone who steps out loses their turn, and a parent cannot hold a place for a grandmother who is stuck in traffic. Staff spend their morning refereeing instead of serving.

What exists and what is new

Blockchain queues exist as prototypes: ThanQ, built at ETHGlobal Bangkok, put a queue onchain, and off chain tools such as digiQueue already run virtual waitlists with SMS. What our research did not find is a queue where a place can be passed, once and under the venue's rules, to a named person, with the full chain of holders visible to the front desk. The new parts are the transferable place, the rules written in the contract, and the move back instead of kick out handling for people who step away. It is a medium novelty product on top of known patterns, not a new primitive.

The data it runs on

Per venue: the day's rules (capacity, grace minutes, transfer policy, places per phone), each place as a record with a join time, a short code and a salted hash of the holder's phone, every handover, hold and move back event, and served or rebooked status. Names, phone numbers and the reason for a visit stay off chain or are never collected.

1.The mission

Make waiting in line fair and kind: your place is a record nobody can argue with, and you can hand it to someone you love.

2.Why people can't resist it

The pass Handing a place to Mum with one tap is the moment people tell their friends about. It turns a stressful wait into an act of care.

Wait anywhere The live line page means people wait at home or at work and come in at 15 minutes. Time in the room drops even when the doctor's pace does not.

No referee Staff point at the record instead of arguing. The desk gets quieter every week, which is why venues keep it.

3.How it works for real

Join by QR: A rotating QR at the gate opens a web page. The visitor enters a phone number; the app creates an embedded wallet with Privy so nobody needs a crypto app. The code changes every 2 minutes so places cannot be claimed from a photo.

Queue contract on Monad: A small Solidity contract per venue holds the day's rules and an ordered list of places. Join, pass, hold, move back and serve are single calls. Monad's fast blocks keep the line page close to real time, and the venue pays gas through a sponsored paymaster.

Transferable place: Each place records its holder and a pass counter. The rules decide whether it can be passed, how many times and to whom (for example only to a phone named at join). Sales to unknown wallets revert.

Live line page: An indexer such as Envio or a small Ponder service listens to queue events and pushes updates over websockets to every phone, showing place, now serving and an estimated wait.

Line keeper agent: A small model such as Claude Haiku or GPT-4o mini reads anonymised events to estimate waits, spot many places on one phone and draft the Friday reminder. It suggests; it cannot remove anyone.

Staff console: A tablet view for the desk: call next, start a hold, mark served, confirm priority by eye, rebook to Monday. Every action is an event the visitor can see.

Notifications: SMS or WhatsApp messages via a provider such as Termii or Twilio for your turn soon, called, and passed to you. Message content is stored off chain.

4.Cost per use and pricing

Per visitor, roughly: a few contract calls on Monad at well under one US cent each in total, about 2 to 3 SMS at around $0.01 to $0.03 each depending on country and provider, and a few hundred model tokens for wait estimates at a small fraction of a cent. Call it $0.05 to $0.10 per visitor. A clinic with 40 walk ins every Saturday is about 160 visitors a month, so roughly $8 to $16 a month plus about $10 to $20 hosting. Gas and SMS prices change; check current rates before pricing.

Corner Free up to 25 places a day

One venue, one line, the live page and transfers. Good for a barber or a suya spot.

Clinic $19 a month

Up to 80 places a day, staff console, priority lane, SMS reminders and Monday rebooking.

Street $59 a month

Several venues on one street or one group of clinics, shared reminders, reports on waits and arguments logged.

5.Growth loop

Each visitor sees the app at the gate and again when a relative passes them a place, often someone who has never used it. Venues on the same street share visitors, so a barber sees the clinic's line page and asks for the same. The share card from a passed place is the warmest ad the app has.

6.Risks and guardrails

Touting and resale: Places can become a market. Defaults are one place per phone, one pass per place, and passes only to a phone named at join. Venues can switch transfers off.

Privacy: A clinic line can reveal who is ill. Only salted hashes and place numbers go onchain; names, numbers and reasons for a visit never do. Short codes rotate per day.

People without phones: Some elders do not carry phones. The desk can issue a printed code tied to the same contract, and a relative can hold it for them.

Unfair removal: Early testing showed auto skipping was cruel. The default is to ping, hold, then move back three places. The agent can never remove a person.

Clinical priority: The app does not triage. Emergencies go straight in; priority lanes are confirmed by staff, not by the software.

Network or app downtime: If the indexer lags, the desk console works from the last known order and the paper fallback prints from it.

7.Build order

Queue contract on Monad testnet with join, pass, hold, move back and serve
Gate QR with rotating code and phone sign in through an embedded wallet
Live line page fed by an indexer
Staff console for one desk
SMS for called and passed to you
Rules screen for capacity, grace and transfer policy
Pilot with one clinic for four Saturdays

8.Where this is going

Now
One clinic in Lagos runs its Saturday walk ins on a line nobody argues about.
Next
The barber, the suya spot and the pharmacy on the same street share one app, so a phone already knows the routine.
Later
Public offices, embassies and vaccination days run fair lines that families can hold for each other, with printed codes for people without phones.
The big one
Waiting stops being a test of who can stand longest. Time spent in lines goes back to work, rest and family.

Costs and tools are estimates at the time of writing. General information only, not legal or financial advice.

OWNER PLAYBOOK

Own it, then chart your voyage

Nine routes from one vessel. Tap a port to open its chart.

Why own Fair Queue

Fair Queue: A public waitlist for clinics, barbers and food spots where your place is onchain and you can hand it to someone. Using someone else's version means their rules, their brand and their revenue. Owning Fair Queue means it is deployed under your wallet, carries your name, and every customer, partner and result builds your track record instead of theirs.