Cross-Chain Asset Tokenization With Custodian-Locked Minting
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Solution Overview
Problem
Challenges exist in representing regular-way assets in traditional finance on blockchain networks in a safe and compliant manner, ensuring accurate matching of underlying assets held at a triparty agent or custodian, and enabling interoperability across different blockchains.
Innovation Solution
A method and system for tokenizing assets via a blockchain-to-blockchain bridge using underlying assets held at a triparty agent or custodian, involving steps like minting, locking, and redeeming tokens across multiple ledgers, with cryptographic key management to ensure security and compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If assets are tokenized on blockchain networks to enhance efficiency and accessibility of financial services, then productivity and ease of operation are improved, but reliability and security are worsened due to challenges in ensuring accurate matching of underlying assets held at triparty agents or custodians
Solution Approach 1:
The patent introduces a custodian as an intermediary entity that holds the underlying assets and issues attestation tokens to verify the existence and quantity of assets. This mediator bridges the gap between the tokenized assets on blockchain and the physical assets in traditional finance, ensuring accurate matching without compromising the efficiency of blockchain operations.
Solution Approach 2:
The system implements a feedback mechanism where custodians continuously attest to the underlying assets, and this information is reflected on the blockchain through attestation tokens. This feedback loop ensures that the tokenized assets always correspond to actual underlying assets, maintaining reliability while enabling efficient tokenization.
2Adaptability or versatility
If tokenized assets are made interoperable across different blockchains to increase adaptability, then versatility is improved, but device complexity is worsened due to the need for blockchain-to-blockchain bridge mechanisms
Solution Approach 1:
The patent creates a universal tokenization framework using attestation tokens that can function across multiple blockchain networks. The custodian-based attestation mechanism serves multiple functions: verifying assets, enabling cross-chain transfers, and maintaining compliance. This multi-functional approach allows tokenized assets to be interoperable across different blockchains without requiring separate complex bridge mechanisms for each pair of chains.
3Reliability
If cryptographic key management is implemented to ensure security and compliance, then reliability is improved, but ease of operation is worsened due to the complexity of key management procedures
Solution Approach 1:
The patent extracts the complex cryptographic key management procedures into a separate, specialized component handled by the custodian and tokenization agent. Users interact with the system through simplified interfaces while the complex key management operations are performed by dedicated systems. This separation allows security and compliance to be maintained through robust cryptographic practices without burdening end users with key management complexity.
Data Source
AI summary
A method for tokenizing assets via a blockchain-to-blockchain bridge may include: receiving a first instruction from a client to mint first tokens for a client asset; encumbering the client asset on a custody ledger; creating a balance of the first tokens on a first distributed ledger; receiving a second instruction to lock and mint the first tokens to a second distributed ledger as second tokens; receiving verification from a custodian that the first tokens are locked on a lock ledger for the custodian; instructing a blockchain bridge computer program to mint second tokens to a client address on the second distributed ledger; receiving a third instruction to return the second tokens to the first distributed ledger; executing a public burn of the second tokens on the second distributed ledger; and instructing the custodian to unlock the first tokens and move the first tokens to the first distributed ledger.