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Reusable KYC / Portable Identity

Definition

Reusable KYC enables a customer to complete identity verification once at a trusted provider and then reuse that verified identity at other institutions — eliminating repeated document capture, selfie verification, and database checks.

Models

graph TD
    A[Reusable KYC Models] --> B[Central Registry<br/>India cKYC]
    A --> C[Federated<br/>UK Trust Framework]
    A --> D[Decentralized<br/>EUDI Wallet, SSI]
    A --> E[Utility Model<br/>Nordic KYC Utility]
    A --> F[Government API<br/>Singapore MyInfo]

    style D fill:#2E7D32,color:#fff
Model How It Works Example
Central registry KYC data stored centrally, institutions download India cKYC (CERSAI)
Federated Trusted IdPs issue verified identity, accepted by relying parties UK Digital Identity Trust Framework
Decentralized User holds verifiable credentials in wallet, presents to anyone EUDI Wallet, Hyperledger Aries
Utility Consortium of banks shares KYC data Nordic KYC Utility
Government API Government provides verified data on demand Singapore MyInfo

Benefits

Stakeholder Benefit
Customer Verify once, no repeated document submission
Institution Lower onboarding cost, higher conversion
Regulator Consistent KYC quality, centralized oversight
eKYC provider New revenue: credential issuance, wallet infrastructure

Challenges

Challenge Details
Data freshness How current is the reused KYC?
Liability Who's liable if reused KYC misses something?
Interoperability Different standards, formats, trust frameworks
Privacy Centralized models create privacy risks
Adoption Requires critical mass of issuers and verifiers

Key Takeaways

Summary

  • Reusable KYC is the end goal of digital identity for eKYC — verify once, prove everywhere
  • Multiple models exist: centralized (India cKYC), federated (UK), decentralized (EU), government API (Singapore)
  • EUDI Wallet (decentralized) is the most ambitious — user-controlled, cross-border, selective disclosure
  • Liability and data freshness are the biggest unresolved challenges
  • For eKYC providers: the shift from document processing to credential issuance and verification