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Tryraffle: Cryptocurrency lottery development

Lottery for basic ETH tokens on BASE network with 3 games at different logic.
Project category

Web3 & Blockchain

Industry

Gaming, Web3

Location

Global

Duration

Jan 2024 - Jun 2024

Tryraffle is an innovative, blockchain-powered lottery platform built on BASE network, offering players a chance to participate in three distinct games with unique mechanics.

Tryraffle ensures a transparent and fair process, where winners are selected through random number generation, and winnings are paid out securely. Players can easily purchase tickets through their crypto wallets, track game results via a Telegram bot, and enjoy flexible options to customize future rounds, such as adjusting ticket prices, frequency of rounds, and participant limits.

Objectives

The main objectives for the development of Tryraffle were:

  1. To create a fair and transparent lottery system using blockchain technology.
  2. To ensure an easy and engaging user experience with ticket purchases and game tracking.
  3. To integrate a referral program to boost user participation.
  4. To develop a backend system for managing games and updating the platform.

Approach used

The development process included:

  1. Building a smart contract to automate the lottery mechanics and securely process winnings.
  2. Integrating Chainlink VRF to generate provably random numbers, ensuring fairness and transparency in selecting lottery winners.
  3. Designing the backend system to manage new rounds, relay lottery information to the website, and support future updates.
  4. Integrating a Telegram bot for real-time notifications, ensuring users stay informed about game results and updates.
  5. Providing an adaptable system that allows customization of future game parameters (such as the number of participants, frequency of rounds, ticket price, etc.).
  6. Introducing a referral program directly linked to user wallets, ensuring transparency and smooth referral reward distribution.

Main page
Main page
Wallet connection
Wallet connection
Checkout
Personal panel
Transaction history
Referral panel
Claim
Claim

Technologies used​

  1. Solidity: To write smart contracts on the Ethereum platform.
  2. HardHat: For implementing smart contracts and automation scripts.
  3. Python (Django framework + fastapi) + Postgresql + Redis: For managing smart-contract and providing aggreated data forthe frontend.
  4. React+Wagmi+Viem: Frontend part for the website.
  5. Wsify: For realtime data syncing on the frontend.
  6. Aiogram: For telegram bot notifications.
  7. Docker-compose with an Nginx-based proxy: This technology stack was chosen for its efficiency in deploying the backend. It helped streamline the process and enhance the platform's overall performance.

Project got blockchain listener for data aggregation from the smart-contract using events. Events are processing by backend to sync data of smart-contract with database, make aggregations for the frontend, make refunds, change games parameters.

Tech stack

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