Tangle Byzantine Vault

A smart contract adapter that integrates Byzantine Protocol's liquid restaking infrastructure with Tangle Network's restaking capabilities.

Overview

This vault allows users to deposit tokens which get delegated to Tangle operators running blueprint services, while receiving a liquid staking token in return. The vault handles the complexities of managing deposits, unstaking, and withdrawals across both protocols.

Two vault implementations are provided:

• TangleByzantineVault: For native asset (ETH) deposits
• TangleByzantineTokenVault: For ERC20 token deposits

Key Features

• Liquid Staking: Users receive shares representing their deposited ETH
• Operator Delegation: Automatically delegates assets to configured Tangle operators
• Multi-step Withdrawals: Handles the withdrawal process across both protocols:
  1. Schedule unstake from operator
  2. Schedule withdrawal from vault
  3. Execute final withdrawal
• Cancellation Support: Users can cancel unstaking or withdrawals at any point
• State Management: Tracks user requests and states independently
• Token Support: Handles both native assets and ERC20 tokens

Technical Details

The vault is built on two main components:

1. Byzantine Protocol: Provides the ERC7535/ERC4626 vault implementations for liquid staking tokens
2. Tangle Network: Offers the restaking infrastructure through its MultiAssetDelegation precompile

Architecture

• Inherits Byzantine's vault implementations for share-based accounting
  • ERC7535 for native assets
  • ERC4626 for ERC20 tokens
• Integrates with Tangle's MultiAssetDelegation precompile for operator delegation
• Implements state machines for tracking unstaking and withdrawal requests
• Ensures proper access control and user isolation

Usage Flow

graph TD
A[Deposit ETH] --> B[Receive Shares]
B --> C[ETH Delegated to Operator]
C --> D[Schedule Unstake]
D --> E[Schedule Withdraw]
E --> F[Execute Withdraw]

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