Method for performing a digital cash transaction

This invention describes a method for digital money transactions where a central system plays a key role. When someone wants to pay, they request a specific amount from their account, and the system generates a unique digital code for that value. This code is then given to the person receiving the payment, who sends it back to the central system for verification before the money is transferred to their account.

Why it matters: Filed before widespread mobile payment apps and tokenization made single-use digital codes common. The infrastructure and user familiarity for such a system are now mature, making implementation more feasible and accepted.

Status: ExpiredProtection ended and was never renewed
How hard to build: SpecializedHeavy software system, network infrastructure, security protocols

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