Dead Man's Switch for Blockchain Wallet Recovery
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Solution Overview
Problem
Existing cryptographic currency systems lack effective mechanisms to prevent loss of funds due to lost or stolen private keys, with current solutions like key copies and repositories being vulnerable to theft and fraud.
Innovation Solution
Implementing a smart contract system that automatically transfers cryptographic currency from an inactive primary wallet to a secondary wallet after a predetermined period of inactivity, ensuring continuous ownership and minimizing risk of theft or fraud.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If users keep extra copies of their private key on portable storage devices, then recovery capability is improved, but security risk increases due to potential theft
Solution Approach 1:
The patent introduces a smart contract as an intermediary mechanism between the user and their cryptocurrency funds. Instead of directly storing private keys on portable devices, the system uses a smart contract that monitors wallet activity and automatically transfers funds to a secondary wallet after a predetermined period of inactivity. This intermediary smart contract eliminates the need to physically store private key copies while maintaining recovery capability.
Solution Approach 2:
The system performs preliminary action by pre-configuring a secondary wallet address and establishing a smart contract with a predetermined inactivity period before automatic transfer. This advance preparation ensures that if the primary wallet becomes inaccessible, the funds can be automatically recovered without requiring immediate physical access to private key copies or manual intervention.
2Ease of operation
If users rely on third-party repositories to store private keys, then ease of recovery is improved, but trust and security deteriorate due to potential fraud and hacking
Solution Approach 1:
The patent implements a self-service mechanism where the smart contract autonomously monitors the primary wallet's activity status and automatically executes fund transfer to the secondary wallet when inactivity is detected. This eliminates the need for third-party repositories or manual recovery processes, as the system serves itself by automatically detecting loss conditions and initiating recovery without external intervention.
Solution Approach 2:
The smart contract continuously monitors blockchain transactions involving the primary wallet address, creating a feedback loop that detects when the wallet becomes inactive. This automated feedback mechanism triggers the recovery process only when necessary, providing ease of recovery through automatic detection and transfer while maintaining security by eliminating reliance on third-party services.
3Reliability
If a dead man's switch mechanism is implemented using smart contracts, then security against loss is improved, but system complexity increases
Solution Approach 1:
The smart contract serves multiple functions within a single system component: it monitors wallet activity, detects inactivity conditions, automatically transfers funds, and maintains a record of the predetermined period. This multi-functionality consolidates what would otherwise require separate monitoring systems, transfer mechanisms, and timing devices into a single universal smart contract, reducing overall system complexity while maintaining comprehensive protection.
Data Source
AI summary
A method for propagating survival of cryptographic currency after inactivity over a predetermined period of time in a blockchain through the use of smart contracts includes: receiving a propagation request that includes unspent transaction output addresses, a digital signature, and a recipient address; generating a smart contract that is configured to self-execute after a predetermined period of time to initiate transfer of cryptographic currency from the output addresses to the recipient address; submitting the smart contract to a node in a blockchain network for addition to the blockchain; monitoring for new blockchain transactions involving any of the unspent transaction output addresses; generating a new smart contract to update the unspent transaction output addresses based on new blockchain transactions; and submitting the new smart contract to a node in a blockchain network after updating.