Blockchain Token Swap Escrow with Committee Freeze
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Solution Overview
Problem
Current blockchain networks face challenges in efficiently managing token swaps across different blockchain networks, particularly in ensuring secure and fair refund processes, as existing solutions are prone to issues like parties going offline or becoming unavailable, leading to aborted swaps and potential unfair access to funds.
Innovation Solution
A system that initiates a token swap operation between two parties on different blockchain networks, involving a committee to freeze tokens upon a refund request, preventing claiming and ensuring fair refund processes by only approving transfers if no operations are referencing the escrow account, thus preventing race conditions and ensuring both parties are treated fairly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a token swap operation is initiated between two parties on different blockchain networks, then the swap process can be executed, but parties may go offline or become unavailable leading to aborted swaps and potential unfair access to funds
Solution Approach 1:
A committee is introduced as an intermediary entity that manages escrow accounts and controls token releases during cross-chain swap operations. The committee freezes tokens when refund requests are detected and manages the release process, preventing direct access issues and ensuring fair outcomes when parties become unavailable.
Solution Approach 2:
The system performs preliminary actions by freezing tokens in escrow accounts before the swap is completed and by checking for referencing operations before releasing tokens. This prevents race conditions and ensures that tokens are only released under controlled conditions, maintaining reliability even when parties go offline.
2Reliability
If tokens are frozen upon refund request to prevent unfair access, then fair refund processes are ensured, but the complexity of managing token states increases
Solution Approach 1:
The smart contract automatically executes token freezing and release operations based on predefined conditions. When a refund request is detected, the contract automatically freezes tokens without requiring manual intervention. The system self-manages the complex state transitions, reducing the operational burden while maintaining fairness.
Solution Approach 2:
The system implements feedback mechanisms where the committee monitors refund requests and referencing operations, and automatically adjusts token states accordingly. This closed-loop control ensures that tokens are frozen or released based on real-time conditions, simplifying the management of complex state transitions through automated responses.
3Reliability
If the system checks for referencing operations before releasing tokens, then race conditions are prevented, but the processing time increases
Solution Approach 1:
The system performs preliminary checks for referencing operations before token release is allowed. By validating the state of escrow accounts and checking for active references in advance, the system prevents race conditions and ensures secure token releases, accepting that this preliminary validation is necessary for maintaining reliability.
Data Source
AI summary
A node on a blockchain network may receive an operation to initiate a token swap between a first party with a first token on a first blockchain network and a second party with a second token on a second blockchain network, receive a refund request operation, and receive a freeze operation from a committee preventing claiming of the first and the second token.