[SC-REP-049] Reputation System Robustness Auditing - Step 49

[soomtochukwu]

Configure Dynamic Rating Decay Parameters (Lambda Tuning)

• Category: Smart Contract: Reputation & Badges
• Task ID: SC-REP-049

Description

This issue is dedicated to the technical design, implementation, and rigorous auditing of 'Configure Dynamic Rating Decay Parameters (Lambda Tuning)' inside the Lance marketplace ecosystem, specifically focusing on the Smart Contract: Reputation & Badges component. As a Soroban smart contract task, the contributor must design robust instance or persistent storage allocations, ensure safe checked math operations, and write high-coverage unit tests within the Rust cargo test harness. The compiled WASM footprint must fit comfortably within standard block boundaries. Ensure that your implementation strictly adheres to the project's architectural guidelines, features self-documenting code with comprehensive inline annotations, and provides solid verification proofs. Any modifications to state variables must undergo strict validation before commits.

Requirements

• Implement the reputation storage and metrics inside contracts/reputation/src/lib.rs for Configure Dynamic Rating Decay Parameters (Lambda Tuning).
• Design a custom Profile struct that stores review aggregates, completed jobs count, and active badge levels.
• Implement safe fixed-point arithmetic for averaging ratings and applying mathematical decay factors.
• Secure the score adjustment routines to strictly check that the caller is an authorized contract address.

Acceptance Criteria

• Reputation profiles load and save correctly without panicking on empty accounts.
• Badge upgrades trigger and level changes reflect immediately in the public getters.
• Vulnerability tests prove that arbitrary direct reviews from unverified public keys are rejected.

[Thoni76]

@Thoni76 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I’m a smart contract and full-stack developer who turns complex ideas into secure, production-ready blockchain code.
With strong skills in Rust and Solidity, I build systems that are fast, safe, and built to last.
My experience with the Stellar SDK lets me ship real-world Web3 solutions that actually move value

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Thoni76 to this issue.

[Stanley-Owoh]

@Stanley-Owoh has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Good day maintainer please I would like to work on this issue please assign it to me thank you

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

[drips-wave]

Congratulations, @Stanley-Owoh! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @Stanley-Owoh: 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 awarded 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 🌊