Skip to Content
KERI Deep Dive

KERI Deep Dive

KERI (Key Event Receipt Infrastructure) is the cryptographic protocol behind Foundry’s identity and verification layer. These pages explain the protocol concepts you will meet when working with Foundry. Not every reader needs them, but they help when you investigate verification results or design integrations that need a high level of trust.

  • KERI Fundamentals: Core concepts such as AIDs, the KEL, key rotation, witnesses, SAIDs, ACDCs, the TEL, OOBIs and CESR
  • Duplicity Detection: What duplicity is in KERI, how it is detected, and what Foundry shows
KERI FundamentalsCore KERI concepts and how Foundry uses them for identifiers, keys and credentials.Duplicity DetectionWhat duplicity is in KERI, how it is detected, and what a verifier should do about it.
Quick Start GuideKERI Fundamentals
KERI Deep Dive | Digital Trust Foundry Docs