Celo

ChainMemory is a beginner-friendly Solidity smart contract designed to store, track, and retrieve game states and match results directly on the blockchain. It’s perfect for developers or learners exploring how to build decentralized applications (dApps) that record game data in a secure, transparent, and tamper-proof way. This project serves as a foundational example of blockchain-based game data storage, paving the way for more advanced concepts like multiplayer matches, leaderboards, and…

This project is a decentralized checklist and progress-tracking system built using a Solidity smart contract. It allows users to create, manage, and complete their personal tasks directly on the blockchain, without relying on any centralized application or database. Each user, identified by their wallet address, receives their own secure on-chain task list where they can add new tasks, mark tasks as completed, and monitor their overall progress through an automatically calculated completion…

WordFi is a simple decentralized application (dApp) built using Solidity and deployed on the Celo Sepolia test network. The contract stores inspirational quotes on the blockchain, allowing anyone to submit and view quotes. The quotes are immutable and can be accessed by anyone in the world, providing a transparent and public record of inspiring lines https://github.com/aryangupta-codes/WORDFI.git

VibeCoding is a smart contract–based concentration challenge where users can test their focus by joining a “vibe challenge.” Players deposit a small entry fee to participate, and upon completion, they can claim rewards if they succeed. Think of it as a “focus-to-earn” experiment — powered by blockchain transparency. Github repo link: https://github.com/shubhajeet26/VibeCoding

ScoreChain is a blockchain-based smart contract built using Solidity that enables secure, transparent, and tamper-proof publication of student exam results. Unlike traditional centralized result systems, ScoreChain leverages blockchain immutability to ensure that once a result is published, it can never be altered or deleted. This helps educational institutions build trust and transparency, while allowing students to verify their scores publicly without revealing personal information.

ImmutableEducationRecords is a decentralized application (dApp) designed to maintain academic integrity and trust in educational records. Once a record is added by the admin, it becomes immutable — meaning no one can modify or delete it. This ensures transparency, permanence, and verifiability of all student academic data. Built on Celo, this project demonstrates how blockchain technology can transform traditional systems into verifiable digital ledgers that empower both institutions and…

DrawChain is a decentralized, provably fair on-chain draw system that uses a commit–reveal mechanism to ensure transparent and tamper-proof winner selection. GitHub Link:https://github.com/rupsaaa/DrawChain.git

VoteBhakti is a decentralized application (dApp) that allows anyone to create and participate in transparent, tamper-proof voting events. It eliminates the need for a central authority by using smart contracts on the blockchain, ensuring that votes are secure, public, and verifiable. This project is ideal for beginners learning Solidity, as it covers the fundamental concepts of: Smart contract structure Data storage (mappings, structs, arrays) Access control (admin functions) Event…

WorkChain Records is a foundational Solidity smart contract designed for beginners to understand how to store structured data immutably on the blockchain. It implements a decentralized, tamper-proof ledger for tracking completed job assignments and maintaining a permanent, verifiable history of contributions. This project is an excellent starting point for learning about structs, mappings, and basic write/read functions in Solidity.

On-Chain Notebook is a blockchain-powered journaling app that stores your notes immutably on the Celo network. Each wallet address acts as its own notebook — where every note you write is safely recorded with a timestamp. Think of it as a digital diary, but instead of living on a central server, it lives on-chain — forever accessible and owned by you. https://github.com/riyaahere28/OnChainNotebook

ReadVault is a beginner-friendly Solidity smart contract that tracks the ownership and borrowing history of both digital and physical books on the Ethereum blockchain. My github link: https://github.com/srijitag448-jpg/Readvault

FlipCoin DApp allows users to bet ETH (or CELO on testnet) on a coin flip — choosing Heads (true) or Tails (false). If the player wins, they receive double their bet. All bets and results are stored on-chain. The game logic is fully transparent and open for everyone to inspect. GITHUB : https://github.com/sumedhachowdhury-03-05/FlipCoin