Implement Stacks Vesting Protocol Smart Contract

[bukas898]

Overview

This PR introduces the initial implementation of the Stacks Vesting Protocol (SVP), a comprehensive token vesting system built on the Stacks blockchain using Clarity smart contracts. SVP enables secure, transparent, and verifiable token distribution with sequential release schedules and identity verification.

Changes

• Implemented core vesting contract with epoch-based release schedules
• Added treasury management functionality with secure authorization
• Created beneficiary registration system with KYC verification
• Implemented token claim mechanism with cryptographic identity proofs
• Added comprehensive event tracking and claim history
• Included read-only functions for contract state inspection

Key Features

• Sequential Vesting Schedules: Support for multiple vesting schedules with different unlock epochs
• Identity Verification: Secure token claims through cryptographic identity proofs
• KYC Integration: Built-in KYC verification process for beneficiaries
• Epoch-Based Releases: Time-locked token distribution based on blockchain epochs
• Comprehensive Tracking: Complete history of claims and distribution events
• Treasury Management: Secure control of token distribution by authorized managers

Technical Implementation

• Used Clarity maps for efficient storage of vesting schedules and beneficiary records
• Implemented robust error handling with descriptive error constants
• Added overflow protection for allocation calculations
• Created secure identity verification using cryptographic hashes
• Implemented event tracking for all token claims

Testing

• Tested all public functions with various input scenarios
• Verified security constraints and authorization checks
• Validated epoch-based release logic
• Tested identity verification with both valid and invalid proofs
• Confirmed proper event recording and state updates

Next Steps

• Add integration tests with token contracts
• Implement frontend for beneficiary interactions
• Create admin dashboard for treasury management
• Add support for multiple token types
• Implement batch processing for schedule creation