---
id: "papers-keri-live-appraisal-key-compromise"
type: "talk"
type_label: "Talks and presentations"
title: "Live Appraisal of Key Compromise via Duplicity Evident Infrastructure: How to protect verifiers (and controllers) from imposters without blockchain and trusted third parties"
maintainer: "Samuel M. Smith"
authors:
  - "Samuel M. Smith"
date: "2024-07"
year: 2024
reading_level: "practitioner"
reading_level_label: "Practitioner"
reading_level_meaning: "architects, product people and adopters who know identity systems"
evidence: "informative"
evidence_meaning: "an author's paper, deck, tutorial or post explaining the suite"
status: "quiet"
status_meaning: "no change in six to eighteen months; still correct"
access: "public"
access_meaning: "anyone with the link"
topics:
  - "theory"
  - "infrastructure"
roles:
  - "security-architect"
  - "infrastructure-operator"
  - "communications"
  - "researcher"
source_url: "https://github.com/SmithSamuelM/Papers/blob/master/presentations/KERI_Appraisal.pdf"
source_license: null
source_license_note: null
found_on: "smith-papers"
kerisse_credit: false
abstract_license: "CC BY 4.0"
abstract_license_url: "https://creativecommons.org/licenses/by/4.0/"
abstract_attribution: "KSKB, the KERISuite Knowledge Base (https://kskb.dev/)"
last_checked: "2026-10-15"
kskb_url: "https://kskb.dev/cards/papers-keri-live-appraisal-key-compromise/"
kskb_app_url: "https://kskb.dev/#item/papers-keri-live-appraisal-key-compromise"
kskb_record_url: "https://kskb.dev/data/kskb/resources/papers-keri-live-appraisal-key-compromise"
kskb_markdown_url: "https://kskb.dev/export/cards/papers-keri-live-appraisal-key-compromise.md"
---

# Live Appraisal of Key Compromise via Duplicity Evident Infrastructure: How to protect verifiers (and controllers) from imposters without blockchain and trusted third parties

A 33-slide deck by Samuel M. Smith relating Key Event Receipt Infrastructure (KERI) to risk assessment and appraisal, with reference to the IETF Remote Attestation Procedures (RATS) working group. It defines static and dynamic appraisability, and covers end verifiability, duplicity, witnesses and watchers, KEL-anchored credential registries, trust bases, and a mortgage-signing use case.

Labels: reading level Practitioner; evidence informative (an author's paper, deck, tutorial or post explaining the suite).
Source: https://github.com/SmithSamuelM/Papers/blob/master/presentations/KERI_Appraisal.pdf (license not recorded).
The abstract is KSKB's own text under Creative Commons Attribution 4.0 (CC BY 4.0), https://creativecommons.org/licenses/by/4.0/; credit KSKB, the KERISuite Knowledge Base (https://kskb.dev/).