Puzzle Lottery and Raffle Contract

[Mkalbani]

Location: contracts/puzzle_lottery
Labels: smart-contract, soroban, good first issue
Estimated Time: 7 hours
Difficulty: Medium

Description

Create a lottery system where players buy tickets with tokens for a chance to win rare NFTs and large token prizes.

Tasks

• Design lottery round structure
• Implement ticket purchase with tokens
• Add verifiable random winner selection
• Create prize distribution logic
• Implement round scheduling (weekly/monthly)
• Add prize pool accumulation
• Create ticket refund for cancelled rounds
• Write lottery flow tests
• Add multiple prize tiers
• Implement guaranteed winner mechanism

Acceptance Criteria

• Tickets purchased with tokens
• Winners selected randomly and verifiably
• Prizes distributed correctly
• Rounds schedule automatically
• Cancelled rounds refund tickets
• Contract deployed to testnet

[drips-wave]

This issue has been added to the Stellar Wave Program and is worth 150 Points.

🧑‍💻 Interested in contributing? Apply to work on this issue on Drips Wave, earn points, and receive rewards.

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Only applications submitted via the apply link above will be considered. Please do not apply by commenting on the issue or opening a PR directly.

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[unixfundz]

@unixfundz has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I’d like to work on this issue because building a lottery and raffle system involves secure token handling, randomness, and prize distribution—all core smart contract skills. I have experience designing token-based flows, implementing verifiable randomness, and writing thorough tests to ensure fairness and correctness, and I can deliver a reliable, well-tested lottery contract.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @unixfundz to this issue.

[Naomi-Gift]

@Naomi-Gift has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi I’d like to work on this please.

I’m a Web3 developer, and I’ll implement the full lottery flow: ticket purchase, verifiable random winner selection, prize distribution, round scheduling, refunds, multiple prize tiers, and tests.

I’ll ensure the contract works securely and transparently.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Naomi-Gift to this issue.

[drips-wave]

Congratulations, @unixfundz! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @unixfundz: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are issued when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[drips-wave]

Congratulations, @Naomi-Gift! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @Naomi-Gift: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are issued when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊