(built from zero during 2 hackathons ^_^)

LOYO is the new generation loyalty program infrastructure.

LOYO is two applications, connected to a system of services on the blockchain:

• business LOYO: angular web application for business.
• LOYO: swift application for clients.

features of LOYO:

For clients:

• no personal data required to get and spend loyalty rewards
• easy-to-use application, all commercials promos at one place

For businesses:

• 500x less infrastructure costs
• open decentralized data about clients' transactions with endless insight opportunities.

Check our pitch deck and demo!:

https://pitch.com/public/71f1c5f5-f052-40e3-9867-873ae42f7eaf

Technical description

Loyo smart contracts are written on solidity and require account abstraction in certain cases. Loyo will be deployed on Avalanche and Arbitrum to profit from low-fees fast transactions.

This repository contains all the services, applications, contracts and docs we managed to do during the hackathon.

/app - swift application

/backend_data_collecter_layer - transaction handling and sending to GREENFIELD

/contracts - smart contracts for business logic implementation

/gsn-contracts - compatible contracts, gasless transactions 🚧 !under construction! Would be cool to integrate using Arbitrum AA

/businessLoyo - angular application for businesses 🚧 !under construction!

Client Application

Currently, Loyo is accessible only on IOS devices. It's a Swift application. This application is connected to the blockchain using QuickNode infrastructure. This application allows clients to get, spend and share tokens of different shops.

Key technical decisions:

• use relayer to enable gazless transaction (clients will not pay anything) 🚧 !under construction!
• each shop is a bep-20 smart contract extended with metadata
• use shop manager contract to know which tokens are held by every user
• connect LOYO app to the GREENFIELD. see /backend_data_collecter_layer

Set Up For Businesses 🚧 under construction

It will look something like:

When businesses want to use Loyo, they have to set up their business token. They can easily do this using the frontend. This frontend will call the Shop Manager contract that will build and deploy the token for business

Greenfield integration

See backend_data_collecter_layer/

Running project locally:

• To run the project locally, please, check ./contract README.
  • You'll have to execute a very simple bash script to deploy smart contracts and register a user.
• We also tried tried to implement GSN-capable smart contracts for meta-transactions, check it in ./gsn-contracts README.

Swift application frontend

See app/

Swift application connection with the blockchain and test

See contracts/

OpenGSN compatible contracts - gasless transactions

See gsn-contracts/

We are planning to add support for gasless transactions. The user will not require BNB tokens to pay with loyalty points. We made our contracts GSN-capable by implementing ERC2771Recipient contract. We tested it through a simple UI with Metamask and it works. However, we didn't finish the implementation of EIP-712 signatures in Swift. Check more in details in gsn-contracts folder`.