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Link Identity Platform

Document status

Version 13.0

The authoritative reference for the Link Identity Platform — its functional requirements, architecture, data models, API specifications, and integration patterns. It is the foundation every other Link product consumes for authentication, palm verification, KYC, device management, multi-tenancy, and compliance. Implementation code is intentionally excluded; this captures the what and why, not the how.

How this is organized

A capability-first build guide grouped into six parts. Each capability reads end-to-end — concept → behavior → flows — with its sequence diagrams inlined and links into the reference lookups.

  • Part I · Orientation

    What the platform is, the glossary, and the identity domains, access-control trust model, and admin console.

    Overview

  • Part II · Platform Foundations

    The cross-cutting model every capability touches: multi-tenancy and configuration.

    Multi-Tenancy

  • Part III · Capabilities

    Authentication, palm verification & flows, device management (mTLS), the broker, compliance, and webhooks.

    Authentication · Palm · Devices

  • Part IV · Interfaces & Reference

    The lookups — every endpoint, the data model, every error code, every event.

    API · Data Model · Errors · Events

  • Part V · Build & Operate

    Deployment architecture and backend repository structure.

    Deployment · Backend Repo

  • Part VI · Appendix

    Reference appendix and the full revision history.

    Appendix · Revision History