Probabilistischer mitgliedschaftstest für blockchain-transaktionsausgänge

AT1916578TInactive Publication Date: 2026-05-15NCHAIN LICENSING AG
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Patent Information

Application Number
AT2021731391T
Authority / Receiving Office
AT · AT
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-05-28
Filing Date
2021-04-23
Publication Date
2026-05-15
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Light clients in blockchain networks face challenges in identifying double-spend attempts without constant communication with blockchain nodes, leading to potential losses from malicious double-spending attacks, especially when accepting 0-conf transactions.

Method used

Implementing probabilistic filters, such as Bloom or Cuckoo filters, to encode identifiers of spent transaction outputs, allowing light clients to quickly check if transaction outputs have been previously spent, thereby preventing double-spending attempts without flooding the network with invalid transactions.

Benefits of technology

Enhances security for light clients and blockchain nodes by enabling local verification of transaction outputs, reducing the risk of double-spending attacks and denial-of-service issues, while minimizing data storage and computational requirements.

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Abstract

A computer-implemented method of identifying a double-spend attempt of a blockchain transaction output, wherein the method is performed by a transmitting entity and comprises: generating a first probabilistic filter, wherein the first probabilistic filter encodes a respective identifier of each of a first plurality of spent blockchain transaction outputs available to the transmitting entity; and making the first probabilistic filter available to a receiving entity.
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