System Architecture
Used in: §1.2 Why Decentralized Identity, §1.5 Platform Architecture at a Glance Audience: all personas IA ID: D1
Reading guide: Clients always reach the API through the ingress; the API is the only component that owns Postgres, Redis, and chain-write authority. The five registries on ADI are write-only from the API and read-only from anyone (including verifiers’ own infra), which is what makes verifications trust-minimised.