CONTRACTS: Implement Multi-Signature Wallet Support

[truthixify]

Description

Enhance the access control system to support multi-signature operations for critical administrative functions, improving security for high-value operations.

Files to Modify

• contracts/access_control/src/access_control.rs - Enhance existing multisig functionality
• contracts/access_control/src/types.rs - Add advanced multisig structures
• contracts/access_control/src/lib.rs - Add multisig endpoints
• contracts/manage_hub/src/lib.rs - Integrate multisig for critical operations
• contracts/access_control/src/errors.rs - Add multisig-specific errors

Key Changes Required

1. Enhanced Multisig System - Build upon existing multisig functionality with more advanced features
2. Proposal Management - Improve proposal creation, approval, and execution workflows
3. Time-Locked Operations - Add time delays for critical operations requiring multisig approval
4. Emergency Procedures - Implement emergency override mechanisms with higher signature thresholds
5. Signature Validation - Add comprehensive signature validation and verification
6. Multisig Integration - Integrate multisig requirements into all critical contract operations

Acceptance Criteria

• Extend existing multisig functionality with advanced proposal types
• Add proposal creation and approval workflows for all critical operations
• Implement time-locked operations with configurable delays
• Create emergency override mechanisms with higher thresholds
• Add signature threshold management and validation
• Include comprehensive multisig tests for all scenarios
• Implement proposal expiration and cleanup mechanisms
• Add multisig audit logging and monitoring

[drips-wave]

This issue has been added to the Stellar Wave Program and is worth 100 Points.

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[ChielokaCode]

@ChielokaCode has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hello Maintainers,

I would like to work on Issue #425: Implement Multi-Signature Wallet Support.

I have experience designing secure access-control systems, multi-step authorization flows, and state-driven contract logic in Rust-based smart contracts. This task aligns well with my background in building safety-critical features such as proposal execution, signature validation, and administrative controls.

For this task, I plan to:

• Extend the existing multisig system with advanced proposal and execution workflows.
• Design robust multisig data structures for proposals, approvals, thresholds, and expiration.
• Implement proposal creation, approval, rejection, and execution logic.
• Add time-locked execution for sensitive administrative operations.
• Implement emergency override mechanisms with higher signature thresholds.
• Add strict signature validation and threshold enforcement.
• Integrate multisig checks into all critical ManageHub contract operations.
• Add multisig-specific error handling and audit logging.
• Implement proposal expiration and cleanup logic.
• Write comprehensive tests covering approvals, failures, time locks, overrides, and edge cases.

I will follow the project’s contribution workflow, work on a dedicated feature branch, and submit a well-tested pull request that matches the existing architecture and coding standards.

Thank you for considering my application

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

[Sandijigs]

@Sandijigs has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

hi My name is Sandra.
I have reviewed the issue and understand what needs to be done
I am a fullstack software/ Blockchain Engineer with over 6years of experience web2 experience(Fullstack) and 2 year web3 experience (JavaScript,TypeScript, Rust ,Python, Soroban,Solidity,(Backend, frontend, Mobile and smart contracts) ). I have contributed to several projects in the stellar ecosystem. . please Assign this Issue to me

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

[Skinny001]

@Skinny001 has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

i will like to apply for this issue and i will implement the multi-signature wallet support

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Skinny001 to this issue.

[KuchiMercy]

@KuchiMercy has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hello manage hub, I'd like to take on this issue. Kindly assign. Thanks

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

[samuelgodsgift]

@samuelgodsgift has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

I have 5+ years of experience. I would love to take on this issue! Kindly assign.

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

[ReinaMaze]

@ReinaMaze has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hello,
I’d like to apply for this issue and kindly request to be assigned.
I’ve reviewed the requirements and I’m confident I can deliver the solution as described. I have open-source contribution experience and I’ll follow the project guidelines to ensure the implementation is clean, tested, and meets the acceptance criteria.

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

[Abidoyesimze]

@Abidoyesimze has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hi, I would like to work on this issue

Kindly assign me

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

[Rampop01]

@Rampop01 has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

I would like to work on this issue . I understand the assignment and the requirements, and I’m confident in the approach needed to deliver the best solution. Kindly assign this task to me.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Rampop01 to this issue.

[ryzen-xp]

@ryzen-xp has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hi maintainers 👋
I’m a blockchain developer with strong expertise in Stellar, Rust,TS and Stellar SDK integrations. I’ve worked on multiple Stellar-based smart contract and backend systems.

I understand the scope of this issue and can deliver a reliable, production-quality solution with proper tests and documentation.
Plz assign me !!

ETA: 24 hours

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

[Edoscoba]

@Edoscoba has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

I’d like to work on this task because multi-signature + timelock controls are the strongest practical upgrade you can make for high-value admin operations. Expanding the current multisig into a robust proposal/approval/execution system with signature validation, expiration, audit logs, and emergency procedures will significantly reduce key-compromise risk and improve operational safety across the hub.

I have experience designing and reviewing security-critical access control systems (threshold signing, timelocks, replay protection, and “break glass” flows).

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

[drips-wave]

Congratulations, @Sandijigs! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on January 31, 2026.

🧑‍💻 @Sandijigs: 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.

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