BULLetproof exchange

Logo
Client App -Client profile
Verfier App - Scan button
Client App - Clients coupons
Exchange orderbook
Client App - Reedemmed coupon
Create buy order
Fulfill buy order
Verifier App - After scanning clients QRCode

What it does

Our project covers two areas:

trading stocks
using stocks to gain discounts

Stock trading is achieved by using SIRA along with an aggregator application that can get buy orders from all smart contracts that are part of the SIRA-compliant ecosystem of smart contracts.

Purchased stocks can be then used to get various discounts etc. in companies that the user is holding stocks in. We have designed a proof of possession mechanism that is easy to use, reliable and uses data from the blockchain.

How we built it

The app uses provided Smart Contracts. We deployed them on the Sepolia blockchain. We have built an API in JavaScript that fetches the blockchain data using the Infura node to enable a good front-end experience. We have also built 3 separate frontend applications, one web app, and 2 iOS applications.

The web app is an order explorer that enables users to create buy orders, fulfill them, and browse their assets. The iOS apps showcase the loyalty use case that is enabled by the stocks being stored on the blockchain. There is an app for end-client and a company operator to validate that end-client has the equity required to earn a discount.

Challenges we ran into

iOS camera module integration cost us a few hours and ended up being a one-line fix
Making smart contracts work with frontend application, especially figuring out the validation errors

Accomplishments that we're proud of

Creating 5 working applications in less than 48hours (we started Friday evening)
Figuring out the use cases for SIRA standard
Finishing the project

What we learned

Regulations are already created for great, real-world blockchain use cases
The last 20% is always the hardest
What are the legal challenges when trying to utilize new technology

What's next for BULLetproof exchange

We want to contribute to SIRA standard to make it even better and more "bulletproof". We also want to enhance the loyalty application and create a white label for interested companies.