Build Multi-Signature Wallet for High-Value Assets

[yusuftomilola]

Description

Create a multi-signature wallet contract specifically designed for managing high-value assets, requiring multiple authorized signatures for critical operations like ownership transfers, asset modifications, and administrative actions.

Requirements

Contract State:

• Wallet owners (array of authorized addresses)
• Required signatures threshold
• Pending transactions (transaction_id → Transaction)
• Transaction confirmations (transaction_id → confirmer_address → confirmed)
• Asset assignments (wallet owns which assets)
• Daily transaction limits
• Executed transactions history
• Owner addition/removal proposals
• Emergency freeze status

Transaction Data Structure:

• Unique transaction ID
• Transaction type (Transfer, Update, Admin, Emergency)
• Target contract address (asset registry, etc.)
• Function to call
• Parameters/data
• Initiator address
• Creation timestamp
• Execution deadline
• Required confirmations
• Current confirmations count
• Confirmed by (array of addresses)
• Execution status (Pending, Executed, Expired, Revoked)
• Execution timestamp
• Transaction value (if applicable)

Wallet Owner Profile:

• Owner address
• Addition timestamp
• Added by address
• Owner type (Primary, Secondary, Emergency)
• Voting weight (if weighted signatures)
• Active status
• Total confirmations provided
• Last activity timestamp

Ownership Proposal:

• Proposal ID
• Proposal type (Add Owner, Remove Owner, Change Threshold)
• Target address (for add/remove)
• New threshold value (for threshold change)
• Proposer address
• Proposal timestamp
• Confirmations received
• Execution status

Core Functions:

• Initialize wallet with initial owners and threshold
• Submit transaction proposal
• Confirm transaction (by wallet owner)
• Revoke confirmation (by confirmer, before execution)
• Execute transaction (anyone can trigger after threshold)
• Cancel transaction (by initiator or all owners)
• Propose add wallet owner
• Propose remove wallet owner
• Propose change signature threshold
• Confirm ownership proposal
• Execute ownership proposal
• Get pending transactions
• Get transaction details
• Get wallet owners
• Get required confirmations
• Emergency freeze wallet (requires majority)
• Emergency unfreeze wallet
• Set daily transaction limit

Access Control:

• Wallet owners: Can confirm transactions and proposals
• Transaction initiator: Can submit and cancel own transactions
• Any address: Can execute transactions meeting threshold
• Majority owners: Can execute emergency freeze

Events to Emit:

• TransactionSubmitted (tx_id, initiator, tx_type, timestamp)
• TransactionConfirmed (tx_id, confirmer, confirmations_count, timestamp)
• ConfirmationRevoked (tx_id, revoker, timestamp)
• TransactionExecuted (tx_id, executor, result, timestamp)
• TransactionCancelled (tx_id, cancelled_by, timestamp)
• OwnerAdded (new_owner, added_by, timestamp)
• OwnerRemoved (removed_owner, removed_by, timestamp)
• ThresholdChanged (old_threshold, new_threshold, timestamp)
• WalletFrozen (frozen_by, reason, timestamp)
• WalletUnfrozen (unfrozen_by, timestamp)
• DailyLimitReached (limit, attempted_amount, timestamp)

Validation Rules:

• Minimum 2 owners required for wallet
• Threshold must be between 1 and total owners
• Threshold must be <= number of owners
• Cannot remove owner if it brings total below threshold
• Confirmer must be a wallet owner
• Cannot confirm same transaction twice
• Cannot confirm own transaction (optional security measure)
• Transaction must not be expired
• Transaction must not be already executed
• Cannot execute without meeting threshold
• Cannot add duplicate owner
• Cannot remove non-existent owner

Business Logic:

• Track confirmations from unique owners only
• Execute transaction automatically when threshold is met
• Expire transactions after deadline
• Support weighted signatures (some owners have more voting power)
• Implement time-lock delays for sensitive operations
• Support transaction batching (multiple operations in one)
• Implement daily/weekly transaction limits
• Support emergency recovery mechanism
• Track execution history for audit
• Allow configuration of confirmation requirements per transaction type

Transaction Types:

• Asset Transfer: Transfer asset ownership (highest security)
• Asset Update: Modify asset metadata (medium security)
• Administrative: Change wallet settings (high security)
• Emergency: Emergency operations (special majority)
• Routine: Low-value operations (lower threshold)

Security Features:

• Time-locked execution (delay between approval and execution)
• Daily transaction limits to prevent abuse
• Emergency freeze mechanism
• Proposal-based owner management
• Transaction expiration to prevent stale approvals
• Revocation of confirmations before execution
• Audit trail of all operations
• Optional transaction whitelisting

Multi-Signature Scenarios:

• 2-of-3: Two signatures required from three owners
• 3-of-5: Three signatures from five owners
• Weighted: Different owners have different voting weights
• Tiered: Different requirements based on transaction type
• Emergency: Special majority for emergency actions

Technical Specifications

• Implement secure transaction ID generation (hash-based)
• Use efficient storage for confirmations (bitmap or mapping)
• Implement cross-contract calls for transaction execution
• Use atomic operations for confirmation and execution
• Optimize gas costs for large owner sets
• Implement deadline checking mechanism
• Use events for all state changes
• Support batch confirmation (confirm multiple at once)

Acceptance Criteria

• Wallet can be initialized with owners and threshold
• Transactions require threshold confirmations to execute
• Owners can confirm and revoke confirmations
• Executed transactions call target contracts correctly
• Owner addition/removal requires proposals and confirmations
• Threshold can be changed through proposal mechanism
• Emergency freeze stops all transactions
• Daily limits are enforced correctly
• Transaction expiration works properly
• All events are emitted correctly

[drips-wave]

This issue has been added to the Stellar Wave Program and is worth 200 Points.

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

🤠 Repo maintainers: You can manage this issue's Points and Complexity on your Maintainer Dashboard here. Please keep an eye on applications and respond quickly 💙

ℹ️ Learn more about Drips Wave

[Samuel1505]

@Samuel1505 has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

I would like to work o this issue, i’m a blockchain developer with strong expertise in Stellar, Rust,. I’ve worked on multiple Stellar-based smart contract. Kindly assign me.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Samuel1505 to this issue.

[Arowolokehinde]

@Arowolokehinde 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, i have a solid background in Rust.
I have built, shipped, and contributed to projects using Soroban smart contracts, gaining hands-on experience writing efficient Rust programs and designing reliable test cases for real-world systems. I also recently contributed to the Rootstock ecosystem, working with both Solidity and Rust, which strengthened my understanding of cross-chain and blockchain-based architectures.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Arowolokehinde 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.

[KuchiMercy]

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

Hello DistinctCodes, I'd like to take up this issue. Kindly assign.

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

[drips-wave]

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

🧑‍💻 @KuchiMercy: 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.

⚠️ Important: When opening a PR, please link it to this issue to ensure it gets tracked accurately.

🤠 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]

This issue has been completed by @KuchiMercy as part of the Stellar Wave Program's 1st Wave 🥳

😎 @KuchiMercy: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here.

🧑‍💻 Repo maintainers: How'd the contributor do? If you like, you can reward them with additional points by making a compliment within seven days after the Wave Program's current wave ends.

[drips-wave]

@KuchiMercy received 4 compliments:

• Problem Solver: +50 points
• High-Quality Code: +50 points
• Fast & Easy: +50 points
• Good Communicator: +50 points