labs@atheron:~/industries/restaurants/blockchains$ launch chain --validators

Shared gift cards

One card for a street, held by no single restaurant.

A gift card shared by independent restaurants is a balance several businesses write to and none should control. That is the narrow case where a private ledger beats a shared database. If a business association runs the card and the members trust it, a database is cheaper and we will build that instead.

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// what matters here

What is different in this industry.

No restaurant holds the balance alone

Each member runs a node, so no one restaurant can add or change a balance.

Spend it anywhere on the street

Cards are sold and redeemed through each restaurant's point of sale, with one balance across all.

Settlement from the same record

What each restaurant owes or is owed is worked out from the shared ledger.

Gift cards, not tokens

The card is a gift card with rules the members agree. Nothing is traded as a token.

// example projects

Priced examples for this service.

Each one is hypothetical, labelled as such, and priced live from our rate card. Open any of them in the estimator and make it yours.

Example projectWeb appBlockchain

Gift cards shared by independent restaurants

Hypothetical. Not a client, not a result.

// The problem

Independent restaurants on one main street want a gift card guests can spend at any of them, and none wants a rival or a card company to hold the balance and the money.

// What we would build

One gift card across the member restaurants, with each sale and redemption recorded on a private permissioned ledger every restaurant runs a node of, so balances are shared and each restaurant is settled from one record nobody can rewrite. If a business association runs the card and everyone trusts it, a database is simpler, and we will build that.

// What is in it

One card and balance across every member restaurant
Sold and redeemed through each restaurant's point of sale
Settlement between restaurants from the shared record
No restaurant can add or change a balance alone
Rules for joining and settling agreed by the members

// Stack

Next.js
PostgreSQL
Hyperledger Besu (private, permissioned)
Point of sale interfaces
DigitalOcean

// estimate

Build: ≈ US$115,000 to US$176,000, delivered within 24 weeksCAD 163,500 to 250,100
Hosting: ≈ US$344 a monthCAD 490 a month
Support: ≈ US$2,500 a monthCAD 3,565 a month

Prices in your currency are estimates from today's Bank of Canada rate. All invoicing is in CAD or USD.

Timeline by milestone

Discovery: 2.9 to 3.4 weeks
Architecture: 0.4 weeks
Design approved: 3.9 to 6.4 weeks
Core features: 1.4 to 2.4 weeks
Full build: 0.9 to 1.4 weeks
Devnet: 2.9 to 4.4 weeks
Testing and fixes: 0.4 weeks
Testnet: 2.9 to 3.4 weeks
Launch: 0.9 to 1.4 weeks
Mainnet: 0.9 to 1.4 weeks

Outside our hands, and added to the calendar

Interface access from your point of sale vendor: 1 to 4 weeks

How it is paid

Deposit 20%: CAD 32,700 to 50,020
Discovery 2.5%: CAD 4,087.50 to 6,252.50
Architecture 6.7%: CAD 10,954.50 to 16,756.70
Design approved 2.5%: CAD 4,087.50 to 6,252.50
Core features 7.5%: CAD 12,262.50 to 18,757.50
Full build 5%: CAD 8,175 to 12,505
Devnet 20.2%: CAD 33,027.00 to 50,520.20
Testing and fixes 2.5%: CAD 4,087.50 to 6,252.50
Testnet 13.4%: CAD 21,909.00 to 33,513.40
Launch 2.5%: CAD 4,087.50 to 6,252.50
Mainnet 7.2%: CAD 11,772.00 to 18,007.20
Holdback, 30 days after launch (10%): CAD 16,350 to 25,010

Start from this example

// questions

Questions we get about this.

Why run shared restaurant gift cards on a ledger?

Only when independent restaurants want a balance none of them controls. If an association runs the card and members trust it, a database is the better choice.

Do diners need a wallet to use a shared gift card?

No. They use a plastic or phone card like any other gift card. The ledger stays behind the scenes.

How does a new restaurant join the shared gift card?

With the members' agreement, by connecting its point of sale and running a node, which we can host for it.

Back to the industry: Restaurants and food service About the service: Private and public blockchains

// next

Not quite your project?

Tell us what you have in mind. We will come back to you with a range and the questions that would narrow it. Or book a call and talk it through.

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