Blockchain Document Platform for Real-Time Letter-of-Credit Verification

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Solution Overview

Problem

Existing electronic document platforms face challenges in managing complex trade finance transactions due to inefficiencies in document verification, lack of real-time access, and security issues, particularly in import/export operations.

Innovation Solution

A blockchain-based system utilizing distributed ledgers and smart contracts to manage trade finance transactions, enabling secure, real-time tracking and verification of trade financing documentation through cryptographically linked sequences of records, with access control and consensus rules to ensure data integrity and privacy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional electronic document platforms are used for trade finance transactions, then document verification and access can be achieved, but security issues and lack of real-time access occur

Engineering Contradiction:
ImprovesecurityVSAvoidreal-time access
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The system segments the document verification process into multiple independent verification stages across different nodes in the distributed ledger network. Each node independently verifies document authenticity and conditions, enabling real-time access while maintaining security through distributed validation rather than centralized control.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The distributed ledger acts as an intermediary between trading parties, providing a neutral, immutable record that all parties can access in real-time. This intermediary structure ensures security through cryptographic verification while simultaneously enabling real-time access to transaction information for all authorized participants.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If manual document verification processes are used, then flexibility in handling complex trade finance transactions is maintained, but inefficiency and increased time consumption occur

Engineering Contradiction:
ImproveflexibilityVSAvoidefficiency
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The system implements self-service through automated smart contracts that automatically execute verification processes and trigger payments when conditions are met. The distributed ledger automatically validates documents and enforces trade terms without manual intervention, providing both efficiency through automation and flexibility through programmable business logic that can adapt to different transaction types.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system changes the operational parameters from manual document handling to automated digital verification. Documents are transformed into digital tokens on the distributed ledger with programmable parameters that automatically enforce trade conditions, significantly improving efficiency while maintaining adaptability through configurable smart contract logic.

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If centralized document management is used, then control over trade finance transactions is maintained, but counterparty risk and lack of transparency occur

Engineering Contradiction:
ImprovecontrolVSAvoidtransparency
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The system merges control and transparency by combining centralized policy enforcement with distributed information access. Smart contracts encode trade terms and conditions that automatically enforce control rules, while the distributed ledger simultaneously provides transparent, real-time visibility of all transaction status to all authorized parties, eliminating the trade-off between control and transparency.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of manufacture

If physical paper documents are replaced with electronic documents, then burden of physical documentation is reduced, but verification security and authenticity issues arise

Engineering Contradiction:
Improvedocumentation burdenVSAvoidverification security
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The system creates cryptographic copies of physical documents on the distributed ledger. Each document is transformed into a digital token with immutable cryptographic hashes that serve as verifiable copies, eliminating physical handling while maintaining security through cryptographic verification. The distributed nature of the ledger ensures these copies cannot be altered without detection.

Inventive Principle:
Principle #26Copying

Data Source

PatentEP4336438B1Electronic document platform
Publication Date: 2025.07.23 ROYAL BANK OF CANADA
  • EP4336438B1 patent drawingFigure 1
  • EP4336438B1 patent drawingFigure 2
  • EP4336438B1 patent drawingFigure 3

AI summary

Systems, methods, and computer-readable media are provided in relation to electronic document platforms. An example method may include receiving a new electronic letter of credit request, the request identifying letter of credit parameters, and at least one condition of the letter of credit associated with corresponding party profiles; obtaining a public key associated with each of the party profiles; generating a plurality of blocks on a distributed ledger on a node of a distributed plurality of nodes, each of the blocks associated with a corresponding condition of the at least one condition to be effected an encrypted with a public key corresponding to the party profile associated with the condition; an generating signals to initiate propagation of the plurality of blocks to the distributed plurality of nodes.