KERI Deep Dive

KERI (Key Event Receipt Infrastructure) is the cryptographic protocol that powers Foundry’s identity and verification layer. These pages explain the protocol-level concepts you’ll encounter when working with Foundry — not every reader needs them, but they help when debugging verification flows or designing high-trust integrations.

• KERI Fundamentals — Core concepts: AIDs, KEL, key rotation, witnesses, SAIDs, ACDCs, TEL, OOBI, CESR
• Duplicity Detection — How Foundry detects, reports, and resolves KEL forks