Blockchain-based revocable large-value transfer method and system

The revocable large-amount transfer method designed using blockchain technology solves the trust risks and high transaction costs associated with centralized institutions, realizes a decentralized transaction process, ensures the fairness and security of transactions, and improves transaction efficiency.

CN117078244BActive Publication Date: 2026-05-26INST OF SOFTWARE - CHINESE ACAD OF SCI +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF SOFTWARE - CHINESE ACAD OF SCI
Filing Date
2023-06-02
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing large-value transfer transactions rely on centralized institutions, which presents problems such as trust risks, high transaction costs, and low efficiency, and makes it difficult to guarantee the fairness and security of transactions in a network environment.

Method used

This paper proposes a revocable large-amount transfer method using blockchain technology. It verifies the legality of transactions through fuzzy signatures and blockchain scripts, realizes a decentralized transaction process, and utilizes the distributed ledger and script mechanism of blockchain to verify and execute transaction conditions.

Benefits of technology

It enables public verifiability and revocability of transactions on the blockchain, reduces reliance on centralized institutions, improves the fairness and security of transactions, lowers transaction costs, and increases transaction efficiency.

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Abstract

This invention discloses a method and system for revocable large-amount transfers based on blockchain. The method includes: obtaining the fuzzy signature σ, verification parameter R, and signature message M of the transaction recipient; verifying the legality of the transaction script corresponding to the signature message M based on the public key of the transaction initiator, the public key of the transaction recipient, and the fuzzy signature σ; if the transaction script is legal, creating and broadcasting a transaction Tx based on the transaction script, so that the transaction recipient can unlock the transaction based on the secret value k, or the transaction initiator can redeem the transaction based on the signature of the transaction initiator's public key and the transaction Tx. This invention not only ensures the fairness and security of transactions but also improves the efficiency of information exchange between the two parties.
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