Add VIP: Multi-Signature Wallet Standard

[sebaseek]

Hi everyone,

This VIP proposes the implementation of a standardized multi-signature (multi-sig) wallet for vechain. The multi-sig wallet standard will enhance security, transparency, enabling use cases across DAOs, businesses, and individuals requiring shared control over funds.

Some of the use cases unlocked with a multi-sig wallet include:

• DAO Treasury Management:
  Shared control over treasury funds for decentralized organizations, ensuring transparency and preventing unauthorized transactions.
• Business Accounts:
  Enabling joint financial management for partnerships and organizations, with predefined approval thresholds.
• Personal and Family Finance:
  Shared accounts requiring multiple approvals for significant transactions.
• Collaborative Projects:
  Transparent management of funds in multi-party projects or ventures.

Key Features:

• Wallet Creation:
  Initialize wallets with predefined signatories and approval thresholds.
• Transaction Proposals:
  Allow any signatory to propose transactions by specifying recipients and amounts.
• Approval Mechanism:
  Transactions are executed only after meeting the required number of approvals.
• Role Management:
  Securely add/remove signatories and update approval thresholds.

The multi-sig wallet will address the absence of native solutions on vechain, aligning it with other blockchain ecosystems like Ethereum / Polkadot and so on, which have well-established multi-sig standards.