A simple Ethereum smart contract for a weekly prize pool lottery where users enter by sending Ether, and a winner is selected once every week to receive the entire prize pool.
Weekly Prize Pool is a lightweight Ethereum smart contract designed to gamify savings, participation, or engagement through a recurring, decentralized lottery system. Anyone can enter by sending ETH, and once per week, a randomly selected participant receives the entire prize pool.
This system promotes fair participation and transparency without the need for off-chain infrastructure, using Ethereum’s built-in beacon chain randomness (block.prevrandao) post-merge.
Open Participation: Anyone can join the pool by sending ETH — no whitelist or access control required.
Weekly Rounds: The lottery resets every 7 days, enabling recurring engagement without manual tracking.
On-Chain Randomness: Uses block.prevrandao (introduced post-Paris hard fork) to generate pseudo-random results.
Trustless Payouts: Winnings are automatically sent to the selected address — no third party or centralized claim process.
Self-Resetting: After each round, the contract clears all players and starts fresh, ensuring fairness across weeks.
We wanted to build something simple, decentralized, and engaging — a contract that:
Incentivizes participation
Demonstrates real smart contract mechanics like randomness, time-based access, and ETH transfer
Has real-world potential as a base layer for community raffles, prize-linked savings, or Web3 engagement rewards.
No dependencies. No oracles. Just Solidity and the Ethereum blockchain.
If developed further, this project could evolve with:
Chainlink VRF integration for verifiable randomness
Automated draws using Chainlink Automation or Gelato
Token-gated entry or NFT-based rewards
Frontend interface for Web3 user interaction
STAGE 1 IDEATHON
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