Blockchain Transaction Protocol for Lightweight Client Validation

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Solution Overview

Problem

Existing blockchain systems face limitations in enabling secure, efficient, and scalable transactions between clients, particularly for digital asset payments, requiring full nodes that consume significant energy and resources, and lack seamless integration with lightweight clients.

Innovation Solution

A method and system for processing transactions between a customer and a merchant using lightweight devices, establishing a secure communication channel, generating a partial invoice transaction, and validating it before broadcasting to a blockchain node, ensuring transactions are efficiently and securely written to the blockchain without requiring full nodes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If full node replication is used for secure blockchain transactions, then security and reliability are improved, but computational resources and energy consumption increase significantly

Engineering Contradiction:

Improvetransaction securityVSAvoidcomputational energy

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent introduces a secure communication channel as an intermediary layer between the merchant device and the blockchain network. This channel enables lightweight clients to perform secure transactions without needing to replicate full blockchain nodes, thus maintaining security while reducing computational energy requirements.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system separates the transaction validation function from the blockchain node replication requirement. By using secure communication channels for validation, the patent segments the security function from the resource-intensive full node operation, allowing lightweight clients to participate securely.

Inventive Principle:

Principle #1Segmentation

2Reliability

If full node replication is required for blockchain transactions, then transaction validation reliability is improved, but device complexity increases

Engineering Contradiction:

Improvetransaction validationVSAvoidnode replication complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The secure communication channel acts as an intermediary that handles the complex validation processes, allowing merchant devices to perform simple send and receive operations without implementing full node replication logic.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system enables merchant devices to perform self-service transactions through the secure communication channel without requiring them to maintain full blockchain nodes, thus reducing device complexity while maintaining validation reliability.

Inventive Principle:

Principle #25Self-service

3Reliability

If traditional blockchain transaction processing is used, then security is maintained, but scalability is limited due to high computational requirements

Engineering Contradiction:

Improvetransaction securityVSAvoidtransaction throughput

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The secure communication channel serves as a mediator that enables high-volume transactions to be processed through lightweight clients, bypassing the computational bottlenecks of traditional full node validation and thus improving scalability and throughput.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent implements partial validation through secure communication channels rather than requiring complete full node validation for every transaction. This partial action approach maintains sufficient security while enabling higher transaction throughput and scalability.

Inventive Principle:

Principle #16Partial or excessive action

4Ease of operation

If lightweight clients are used for blockchain interaction, then ease of operation and accessibility are improved, but security validation capabilities are reduced

Engineering Contradiction:

Improveclient accessibilityVSAvoidtransaction validation

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The secure communication channel acts as a trusted intermediary that compensates for the reduced validation capabilities of lightweight clients. The channel provides the necessary security guarantees that would otherwise require full node replication, enabling easy operation without sacrificing validation reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12615164B2Blockchain based transaction protocol

Publication Date: 2026.04.28 NCHAIN LICENSING AG

AI summary

The present disclosure proposes methods, devices and systems for processing a transaction between a customer and a merchant. The method may be performed at a merchant device. The method may comprise receiving customer information from a customer device associated with the customer; establishing a secure communication channel between the customer and the merchant based on the customer information; generating a partial invoice transaction based on the customer information; sending the partial invoice transaction to the customer device via the secure communication channel; receiving via the secure communication channel, a transaction which is a completed version of the partial invoice transaction and which has been authorised at the customer device; validating the transaction; broadcasting the validated transaction to a blockchain node to be submitted to a blockchain; receiving at least one notification that the transaction has been validated by the blockchain node and included on the blockchain.