CBDC Pull Payment Authorization for Real-Time Fund Transfers

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Solution Overview

Problem

Existing electronic payment systems, such as wire transfers and ACH, are costly and not instantaneous, while real-time payments using central bank digital currencies (CBDC) lack efficient pull transaction capabilities.

Innovation Solution

A method allowing account holders to authorize entities to issue pull requests for funds using real-time payment rails, leveraging CBDC and blockchain technology for immediate and secure transactions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If real-time payment rails using CBDC are used, then transaction speed is improved, but pull transaction capability is lacking

Engineering Contradiction:

Improvetransaction speedVSAvoidpull transaction capability

Core Design Contradiction:

SpeedVSAdaptability or versatility

Solution Approach 1:

The patent segments the payment authorization process into push transactions (initiated by payer) and pull transactions (initiated by payee). The pull transaction capability is implemented as a separate authorization mechanism where the payee obtains permission to initiate fund transfers, thus adding versatility to the real-time payment system without compromising its speed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements preliminary authorization actions where the payer pre-authorizes the payee to initiate pull transactions. This preliminary consent is stored and validated before the actual pull transaction occurs, enabling the system to support both push and pull modes while maintaining real-time processing speed.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If traditional wire transfer and ACH systems are used, then pull transaction capability is available, but transaction cost increases and speed decreases

Engineering Contradiction:

Improvepull transaction capabilityVSAvoidtransaction cost

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent replaces the traditional mechanical payment processing systems (wire transfer, ACH) with a digital CBDC-based real-time payment system. This substitution eliminates the need for complex intermediary processing while maintaining pull transaction capability through digital authorization tokens, thereby reducing transaction costs and improving speed.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If traditional payment systems are used, then pull transactions are supported, but network latency increases

Engineering Contradiction:

Improvepull transaction supportVSAvoidnetwork latency

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent extracts the authorization validation process from the traditional multi-layered payment system architecture and implements it directly within the CBDC real-time payment rail. By taking out the authorization check and embedding it in the blockchain-based system, the patent eliminates intermediate processing delays while maintaining pull transaction support.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20260037943A1Method of pull-based real time payment authorization

Publication Date: 2026.02.05 AMERICAN EXPRESS TRAVEL RELATED SERVICES CO INC

AI summary

Disclosed herein are system, apparatus, article of manufacture, method and/or computer program product embodiments, and/or combinations and sub-combinations thereof, for allowing an account holder to authorize an entity to issue pull requests for funds to be transferred using real time payment rails. A first account representing a store of central bank digital currency (CBDC) of a first user may be linked with a second account representing a store of central bank digital currency (CBDC) of a second user. A request may be received, from one of the first and second user, to transfer CBDC from the first account to the second account. From another of the first and second user, an authorization may be received to transfer the CBDC. In response to the authorization, an entry may be written to a blockchain ledger effecting the requested transfer of the CBDC from the first account to the second account.