---
id: "kerione-cesr-proof-signatures"
type: "talk"
type_label: "Talks and presentations"
title: "CESR Proof Signatures: Partial Digital Signatures with KERI and ACDC"
maintainer: "unknown"
authors: []
date: null
year: null
reading_level: "implementer"
reading_level_label: "Implementer"
reading_level_meaning: "developers working in or against the code"
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:
  - "specifications"
  - "cryptography"
roles:
  - "developer"
  - "security-architect"
  - "standards-policy"
source_url: "https://docs.google.com/presentation/d/1Kkzi0Ay97VLdlFFnYuxcQ2csPo6h6rCDxDkAJS7Q97c/edit"
source_license: null
source_license_note: null
found_on: "keri-one-resources"
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: "2026-10-14"
kskb_url: "https://kskb.dev/cards/kerione-cesr-proof-signatures/"
kskb_app_url: "https://kskb.dev/#item/kerione-cesr-proof-signatures"
kskb_record_url: "https://kskb.dev/data/kskb/resources/kerione-cesr-proof-signatures"
kskb_markdown_url: "https://kskb.dev/export/cards/kerione-cesr-proof-signatures.md"
---

# CESR Proof Signatures: Partial Digital Signatures with KERI and ACDC

A 24-slide Google Slides deck introducing CESR Proof Signatures, a specification for attaching digital signatures to nested portions of self-addressing data, with signatures that can be transposed across envelope boundaries. It recaps KERI, ACDC and CESR, then explains SAD path signature groups, transposition, the SAD Path Language and new code-table entries, and lists uses in KERI, ACDC and the vLEI. For implementers.

Labels: reading level Implementer; evidence informative (an author's paper, deck, tutorial or post explaining the suite).
Source: https://docs.google.com/presentation/d/1Kkzi0Ay97VLdlFFnYuxcQ2csPo6h6rCDxDkAJS7Q97c/edit (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/).