TeleHub Avail
A Backend service that interactes between users and the Avail blockchain via a Telegram bot. The main functionality of the service allows users to securely submit and retrieve data.
Demo
About
The problem it solves Key features include secure data handling, blockchain-based storage, and retrieval, making this project a powerful tool for decentralized applications that require secure and reliable data management. Users interact with the system through a Telegram bot, where they can submit data, encrypted with a public key, which is then stored on the Avail blockchain. Additionally, users can retrieve stored data by providing a transaction hash and decrypt it using their private key. The project integrates Polkadot.js API for communicating with the Avail network and leverages NestJS for the backend structure.
How it's made
Challenges we ran into One of the challenging parts of the project was managing asynchronous transaction submissions on the blockchain while maintaining real-time interaction via the Telegram bot. Handling transaction states, including errors or blockchain rejections, and relaying that information back to the user in real-time through the bot required careful handling of async operations and error management. I implemented a secure key management system for users to submit their public and private keys in a way that ensured the integrity of the encryption process and prevented any leaks or mishandling of sensitive information.