A Proposed Architecture Digital Money Sovereignty in the 5G and Ai Native 6G Era | Zenodo
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Published August 18, 2026
| Version v1
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A Proposed Architecture Digital Money Sovereignty in the 5G and Ai Native 6G Era
Authors/Creators
Das, Sangam
Description
Abstract
This paper presents a hardware-gated execution-finality architecture for sovereign digital payment systems and Central Bank Digital Currencies (CBDCs) in which a payment token, offline credential, or settlement instruction does not become technically valid merely because a wallet, application, operating system, network component, or user initiates it. Instead, each proposed payment remains a candidate act until a protected enforcement domain validates the applicable authority, purpose, monetary-policy manifest, jurisdiction, nonce, authorization state, content binding, and compliance predicates. Only after successful validation does the protected domain generate the signed cryptographic artifact required for payment acceptance or settlement, while downstream payment networks and settlement gates independently verify that artifact and reject the transaction if verification fails.
The problem addressed is structural. Offline CBDC payments lose real-time access to central authorization and can therefore expose payment systems to relay and replay attacks, offline double spending, power-interruption state inconsistencies, and temporary AML or policy-enforcement gaps . Conventional relay defenses may depend on NFC or Bluetooth proximity assumptions, while offline double-spend controls can depend on later reconciliation after value has already moved. A further vulnerability exists where a payment artifact can be released before the corresponding local spend state has been irreversibly consumed.
The proposed solution moves these controls to the protected execution boundary. A hardware-backed enforcement domain uses a hardware-bound, session-scoped identity incorporating device attestation, transaction-specific nonce information and temporal context before producing a spending artifact. Relayed transactions that cannot reproduce the required protected binding therefore fail before a valid payment token is generated.
For offline double-spend protection, the architecture applies Atomic State-Before-Release , including a protected write-ahead state mechanism in sealed storage, so that credential consumption or balance-state transition is durably committed before an externally usable spending artifact is released. If a power interruption occurs during the transaction, recovery logic preserves the intended state transition rather than recreating previously available spending authority.
For offline regulatory enforcement, pre-issued Consumable Authorization Credentials (CACs) carry bounded policy envelopes so that spending limits and AML-related constraints can be evaluated locally within the protected domain without requiring a network query at the moment of payment. Offline operation therefore uses a pre-authorized constraint envelope rather than suspending compliance during disconnection.
The resulting architectural rule is:
No validated compliance state means no valid cryptographic artifact; no valid artifact means no settleable payment.
The proposed architecture therefore shifts offline CBDC security from post-event fraud detection and reconciliation toward pre-finality cryptographic enforcement , such that non-compliant, relayed, replayed, duplicated, or incompletely state-committed operations fail to produce the protected spending artifact required for downstream acceptance and settlement.
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Keywords
cbdc
digital money
finance
payment
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10.5281/zenodo.21991408
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Resource type<br>Patent
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Created
August 18, 2026
Modified
August 18, 2026
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