---
id: "papers-keri-alphaomega-2025"
type: "talk"
type_label: "Talks and presentations"
title: "Key Event Receipt Infrastructure: An Identity System Security Overlay for the Internet, A Trust Spanning Layer for the Internet"
maintainer: "Samuel M. Smith"
authors:
  - "Samuel M. Smith"
date: "2025-09-03"
year: 2025
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: "active"
status_meaning: "changed within the last six months, or a live service"
access: "public"
access_meaning: "anyone with the link"
topics:
  - "start-here"
  - "theory"
  - "deployments"
roles:
  - "security-architect"
  - "infrastructure-operator"
  - "product"
  - "communications"
  - "investor"
  - "business-development"
  - "researcher"
source_url: "https://github.com/SmithSamuelM/Papers/blob/master/presentations/KERI_AlphaOmega.20250903.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-alphaomega-2025/"
kskb_app_url: "https://kskb.dev/#item/papers-keri-alphaomega-2025"
kskb_record_url: "https://kskb.dev/data/kskb/resources/papers-keri-alphaomega-2025"
kskb_markdown_url: "https://kskb.dev/export/cards/papers-keri-alphaomega-2025.md"
---

# Key Event Receipt Infrastructure: An Identity System Security Overlay for the Internet, A Trust Spanning Layer for the Internet

A 57-slide overview deck by Samuel M. Smith, dated 2025-09-03 in its file name, covering Key Event Receipt Infrastructure (KERI) from first principles: the secure attribution problem, trust bases, autonomic identifiers and pre-rotation, duplicity detection, the KERI ecosystem, Authentic Chained Data Containers (ACDC) registries, and the Trust Spanning Protocol (TSP). It lists the specifications and the adoptions the author names, for newcomers and practitioners.

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_AlphaOmega.20250903.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/).