Bitcoin Yield Aggregator Smart Contract

A sophisticated yield optimization platform built for BTC-based assets, enabling automated yield farming and portfolio management across multiple DeFi protocols on the Stacks blockchain.

Overview

The Bitcoin Yield Aggregator is a smart contract system that automatically maximizes yields for Bitcoin-based assets by dynamically allocating funds across various DeFi protocols. It implements a secure, efficient, and flexible architecture for managing deposits, calculating rewards, and optimizing returns while maintaining strong security guarantees.

Features

Core Functionality

• Multi-Protocol Yield Optimization: Automatically distributes funds across different protocols based on APY
• Dynamic APY Tracking: Real-time monitoring and adjustment of yield strategies
• SIP-010 Token Support: Compatible with any Bitcoin-based token implementing the SIP-010 standard
• Flexible Protocol Management: Support for adding, updating, and managing multiple yield protocols
• Emergency Controls: Built-in emergency shutdown mechanism for risk management

Security Features

• Token Whitelisting: Only approved tokens can interact with the contract
• Deposit Limits: Configurable minimum and maximum deposit amounts
• Owner Controls: Protected administrative functions
• Safe Transfer Mechanisms: Secure token transfer implementation
• Protocol Validation: Comprehensive validation for all protocol interactions

Yield Management

• Automated Rebalancing: Smart rebalancing of funds across protocols
• Weighted APY Calculation: Sophisticated APY calculations based on protocol allocations
• Reward Distribution: Fair and efficient reward calculation and distribution system
• Platform Fee Management: Configurable platform fees with upper limits

Technical Architecture

Constants

ERR-NOT-AUTHORIZED (u1000)
ERR-INVALID-AMOUNT (u1001)
ERR-INSUFFICIENT-BALANCE (u1002)
...

Data Structures

Maps

• user-deposits: Tracks user deposit amounts and timestamps
• user-rewards: Manages pending and claimed rewards
• protocols: Stores protocol configurations and status
• strategy-allocations: Manages protocol allocation percentages
• whitelisted-tokens: Tracks approved tokens

Variables

• total-tvl: Total Value Locked in the contract
• platform-fee-rate: Current platform fee percentage
• min-deposit: Minimum allowed deposit amount
• max-deposit: Maximum allowed deposit amount
• emergency-shutdown: Emergency shutdown status

Core Functions

Deposit Management

(define-public (deposit (token-trait <sip-010-trait>) (amount uint)))
(define-public (withdraw (token-trait <sip-010-trait>) (amount uint)))

• Handles user deposits and withdrawals
• Validates token and amount constraints
• Updates TVL and user balances
• Triggers protocol rebalancing when needed

Protocol Management

(define-public (add-protocol (protocol-id uint) (name (string-ascii 64)) (initial-apy uint)))
(define-public (update-protocol-status (protocol-id uint) (active bool)))
(define-public (update-protocol-apy (protocol-id uint) (new-apy uint)))

• Manages protocol configurations
• Updates protocol status and APY
• Handles protocol allocation strategies

Reward Distribution

(define-public (claim-rewards (token-trait <sip-010-trait>)))

• Calculates user rewards based on deposit amount and time
• Handles reward distribution
• Updates reward tracking

Administrative Functions

Platform Management

(define-public (set-platform-fee (new-fee uint)))
(define-public (set-emergency-shutdown (shutdown bool)))
(define-public (whitelist-token (token principal)))

• Controls platform parameters
• Manages emergency situations
• Handles token whitelisting

Usage Guidelines

For Users

1. Ensure your tokens are whitelisted
2. Deposit funds within the min/max limits
3. Monitor your rewards using the provided getter functions
4. Claim rewards when desired
5. Withdraw funds with proper validation

For Administrators

1. Manage protocol configurations
2. Monitor and update APY rates
3. Handle emergency situations
4. Manage platform fees
5. Maintain token whitelist

Error Handling

The contract implements comprehensive error handling with specific error codes:

• ERR-NOT-AUTHORIZED (u1000): Unauthorized access attempt
• ERR-INVALID-AMOUNT (u1001): Invalid amount specified
• ERR-INSUFFICIENT-BALANCE (u1002): Insufficient funds
• And more...

Security Considerations

Best Practices

• Always verify token whitelist status
• Monitor protocol allocations
• Regular APY verification
• Maintain safe deposit limits

Risk Management

• Emergency shutdown capability
• Deposit/withdrawal limits
• Protocol validation
• Safe transfer mechanisms

Integration Guide

Required Interfaces

• SIP-010 Token Interface
• Protocol-specific interfaces

Implementation Steps

1. Deploy contract
2. Configure initial protocols
3. Set platform parameters
4. Whitelist tokens
5. Monitor and maintain

License

This project is licensed under the MIT License.

Contributing

We welcome contributions from the community. To get started, fork this repository, make your changes, and submit a pull request. For significant changes, please open an issue first to discuss the proposed changes.