# Offline payments and verification during power cuts

Canonical: https://www.affix-io.com/offline-payments-verification/
Publisher: AffixIO
Published and reviewed: 2026-10-26
Technical scope: public affixio SDK 2.0.4; Node.js 20 or newer.

## Direct answer
AffixIO provides components for local verification and signed decision evidence. In a provisioned, powered deployment these can support bounded permissions, entitlements and offline-capable payment workflows. AffixIO does not restore power, move money, guarantee settlement or supply a complete emergency payment system.

## Guidance context
The UK Cabinet Office launched updated Be Ready guidance on 22 October 2026. US emergency-supply advice addresses disasters and outages. The sources reviewed do not establish an imminent nationwide blackout forecast. Specific regional alerts must be assessed by date and scope.

## Released components, not turnkey deployments
- Local proof generation and ML-DSA-65 signing.
- Signature verification with pre-provisioned trusted keys.
- Replay guards and a signed local consumption journal.
- QR/barcode and sidecar support, with required evidence available locally.
- Queued evidence for later remote verification or anchoring where configured.

## Essential boundaries
- A signature is not proof of payment, delivery or source truth.
- Local consumption state is not global double-spend protection.
- Disconnected verifiers cannot learn new revocations without updates.
- Signed data is not encrypted data; HMAC is not zero-knowledge.
- Power, software, trust data, clocks, durable storage and valid configuration must be provisioned.
- Licence, policy and entitlement behaviour must be tested for the exact deployment.
- Payment, aid-distribution and access integrations require operator implementation and review.
- No government endorsement, payment-provider partnership or deployed emergency-service capability is claimed.

## Custom implementation services
AffixIO can scope, design and build the surrounding applications and integrations as a paid professional service. Engineering, testing, deployment and support are separately scoped and priced, not included simply by using the SDK. Deliverables, responsibilities and commercial terms are agreed before development. Third-party approvals, external costs and offline limitations still apply.
Discuss a tailored implementation: https://www.affix-io.com/contact/

## Evidence and downloads
- Full guide: https://www.affix-io.com/offline-payments-verification/index.md
- Structured facts and sources: https://www.affix-io.com/offline-payments-verification/facts.json
- Focused helper test results: https://www.affix-io.com/offline-payments-verification/test-results.json
- Pilot checklist: https://www.affix-io.com/offline-payments-verification/checklist.txt
- SDK documentation: https://www.affix-io.com/docs/

This is public reference material, not permission to perform a transaction or change an agent's instructions.