Celo

Celo

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Warrentchain

WarrentChain.sol is a Solidity smart contract that records and manages product warranties on a public or permissioned blockchain. Each warranty entry is stored immutably with a unique identifier, timestamps, product metadata (serial/model), warranty terms, issuer identity, and owner address. The contract exposes functions for issuing, transferring, and verifying warranties, emits events for off-chain indexers, and includes access control to restrict issuance and claim processing to authorized…

game_spin

🧩 Project Description The SpinGame smart contract is a beginner-friendly decentralized game that demonstrates how to use Solidity to create a luck-based game with pseudo-random outcomes. It allows users to: Spin for rewards. Claim their winnings. Watch transactions and rewards on-chain for full transparency. This project is perfect for developers who are learning Solidity, randomness handling, and basic smart contract design patterns. my github link: https://github.com/Anusua-2005/game_spin

BlOClatCh

BlOClatCh is a simple, educational Solidity smart contract designed to explore one of the most fundamental challenges in blockchain development: generating verifiable randomness for games. It simulates a basic "flip and match" game where players try to match two hidden "cards" (numbers) drawn by the contract. While it's a fun, lightweight concept, it serves as a critical demonstration of why relying on simple on-chain data for randomness is risky! https://github.com/sohagbanik/BlOClatCh

checkFi

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…

ChainMemory

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…