Decentralized ID

Decentralized ID is a type of Digital ID that enables individuals to represent and prove who they are across different contexts without relying on centralized identity registries

eIDAS 2.0 | Identity Verification with ID Wallets | Gataca electronic IDentification, Authentication, and Trust Services
eIDAS v2 Demystified: What it means for the SSI community? | Gataca

OpenPGP

Pretty Good Privacy - Wikiwand
RFC 9580 - OpenPGP
OpenPGP - ArchWiki
Stateless OpenPGP - ArchWiki

Index - GnuPG wiki
sequoia-pgp / sequoia · GitLab

Keyoxide Docs

WKD - GnuPG wiki
Web Key Directory — Keyoxide Docs
What is WKD? Everything You Need to Know About Web Key Directory | Mailfence Blog
Setting up WKD for self-hosted automatic key discovery
Web Key Directory - Tester

Mobile Driver's License (mDL)

utilizes mobile's TEE
supports offline use
selective disclosure
non-blockchain related

ISO/IEC 18013-5:2021 - Personal identification — ISO-compliant driving licence — Part 5: Mobile driving licence (mDL) application
What Is a Mobile Driver's License (mDL)? Your 2026 Guide

DID with Blockchain

Decentralized identifier - Wikiwand
Decentralized Identifiers (DIDs) v1.0
Decentralised Identifiers

Identifies a person, organization, or device.
Has a resolvable DID Document describing public keys, service endpoints, etc.
Is controlled using cryptographic keys.
Works across DID methods (did:ion, did:key, did:web, did:ethr, etc.)

DID Method	Where the key is stored
did:ion	Bitcoin + Sidetree network
did:web	HTTPS web server hosting a JSON file
did:key	In-place
did:ethr	Ethereum
did:sov	Hyperledger Indy ledger

Self-sovereign identity - Wikiwand
Self-Sovereign Identity: The Ultimate Guide 2025
Self-sovereign identities | Bosch Global
A gentle introduction to self-sovereign identity – Bits on Blocks
Hyperledger In-depth: An hour with Poste Italiane: The Path to SSI: A proposal from Poste Italiane | Hyperledger

DIDComm
Understanding DIDComm. A cross-community effort to standardize… | by Kaliya-IdentityWoman | Decentralized Identity Foundation | Medium
DIDComm Messaging Specification v2.1

DIDs and DIDcomm

Identity.com: User-Centric Digital Identity

Blockchain Authentication: Security for Digital Identities | 1Kosmos

Wallets across NFT aggregators: Monetization & Build Architecture - Abi Dharshan - Zerion - YouTube
解讀 DID 去中心身份》未來大規模採用，具體投資方向在哪？ | 動區動趨-最具影響力的區塊鏈新聞媒體

What Is Identity Management? - 1Kosmos
Blockchain for Digital Identity | Real World Blockchain Use Cases | Consensys
The Identity Cookbook: Blockchain for Identity: Access Request Management
Anatomy of a zero-knowledge web application - Clipperz, register your creations on the blockchain
What Is Decentralized Identity? A Complete Guide for Beginners

Decentralized Autonomous Organization/DAO

Decentralized autonomous organization - Wikiwand
Govern better, together. Build your DAO now.

Self-sovereign identity/SSI

Blockchain can be used as Public Key Infrastructure (PKI), but not the necessary condition.

Self-sovereign identity - Wikiwand
Self Sovereign Identity & Decentralized Identity - An Unlimited Guide - 101 Blockchains
What is self-sovereign identity? Definition from WhatIs.com

SSI Essentials: Everything you need to know about Decentralized Identity | Gataca
SSI Essentials: A crash course on Digital ID Wallets | Gataca
The Role of Trust Registries in an SSI Ecosystem | Gataca | Gataca
Reusable KYC: Integrating SSI Technology into KYC Processes | Gataca
Gataca DID Registry: Achieving blockchain interoperability | Gataca DID Registry links natural person to DID documents on blockchain
EBSI DID Method v2: What has changed? | Gataca | Gataca

European Blockchain Services Infrastructure deemed DIDs as personal hence storage of DID on public is non-GDPR-friendly for natural persons
EBSI DID v2 embeds the public key in the DID identifier
EBSI DID v2 is not backed by a ledger

SSI and Digital wallets
Frontiers of Trust

Trust Over IP - Defining a complete architecture for Internet-scale digital trust
Sovrin Governance Framework - Sovrin

Decentralized Identifiers (DIDs) v1.0 rejected by Google, Apple and Mozilla as there are too many (> 150) verification protocols, some requiring blockchain

Find an Ethereum Wallet | ethereum.org

Projects

KILT is an identity blockchain for issuing decentralized identifiers (DIDs) and verifiable credentials.
Docs | KILT Protocol
KILT Protocol - CertiK Skynet Project Insight
Get Your DID: Now You Can Pay with KILT and PayPal | by KILT Protocol | kilt-protocol | Medium

Home - Keri.one Key Event Receipt Infrastructure (KERI) is the first truly fully decentralized identity system.
keri | Key Event Receipt Infrastructure - the spec and implementation of the KERI protocol

LFDT

Trust Over IP
Trust Over IP - Defining a complete architecture for Internet-scale digital trust

Hyperledger Identus
Hyperledger Identus - Hyperledger Identus | Hyperledger Identus
hyperledger-identus/hyperledger-identus: Identus provides components to develop decentralized identity solutions that adhere to widely recognized self-sovereign identity (SSI) standards.
Hyperledger Identus – then, now, and tomorrow - IOHK Blog

Hyperledger Indy
Hyperledger Indy — Hyperledger Indy 1.0 documentation
hyperledger/indy

credebl.id Adopted as Bhutan's National Digital Identity solution
Overview | CREDEBL Docs
CREDEBL
CREDEBL

OpenWallet Foundation

OpenWallet Foundation – Linux Foundation Project

ACA-Py – OpenWallet Foundation
ACA-Py README - ACA-Py Docs
openwallet-foundation/acapy: ACA-Py is a foundation for building decentralized identity applications and services running in non-mobile environments.

Credo – OpenWallet Foundation previously Hyperledger Aries Framework Javascript
Credo | Credo
openwallet-foundation/credo-ts: Typescript framework for building decentralized identity and verifiable credential solutions

Askar – OpenWallet Foundation
openwallet-foundation/askar: Secure storage designed for Hyperledger Aries agents.

Verifiable Credentials

see crypto#Zero-knowledge proof/ZKP

Verifiable Credentials Data Model v2.0
Verifiable Credentials Data Model latest
What Are Verifiable Credentials? Complete Overview
What are Verifiable Credentials? Examples and Use Cases | Gataca

Building interoperable ZKP credential systems | by Decentralized Identity Foundation | Decentralized Identity Foundation | Medium

(PDF) Towards a Novel Identity Check Using Latest W3C standards & Hybrid Blockchain for Paperless Verification

Verifiable Credentials: A Simple Guide to How They Work
MATTR Learn Digital credentials resources and tools you’ll actually enjoy using

OpenID for Verifiable Credential Issuance (OID4VCI)

OpenID for Verifiable Credential Issuance 1.0
What is OpenID4VCI? The Developer's Guide (2026)
OID4VCI | MATTR Learn
OpenID for Verifiable Credential Issuance - Authlete

Selective Disclosure

crypto#bbs-signatures
crypto#zk-SNARKs

RFC 9901 - Selective Disclosure for JSON Web Tokens

Selective Disclosure
SD-JWT VC Explained: A Practical Guide for 2026
Selective Disclosure Guide: Privacy Feature of Verifiable Credentials
Selective disclosure in digital credentials: A review - ScienceDirect

Zero Knowledge Proof (ZKP) and Selective Disclosure | Gataca ❗!important, different SD approaches
Selectively Disclosed Verifiable Credentials | by Julian Voelkel | 51nodes | Medium predicates, Zero-Knowledge-Set-Membership (ZKSM), Zero-Knowledge-Range-Proofs (ZKRP)

Linked-Data-based Verifiable Credentials with Selective Disclosure, Unlinkability, and Predicate Proofs - Speaker Deck
zkp-ld GitHub org

Anoncreds

Part of #LFDT
ZPK for maximum privacy and selective disclosure

Hyperledger Anoncreds the most commonly used Verifiable Credential (VC)
Hyperledger AnonCreds - Hyperledger AnonCreds - LF Decentralized Trust

anoncreds/anoncreds
anoncreds/anoncreds-v2-rs: Anonymous Credential Exchange 2.0 supports BBS (Boneh-Boyen-Shacham) signatures, a privacy-preserving signature scheme that offers zero-knowledge proof-like properties by allowing selective disclosure of specific signed attributes without revealing the entire set of signed data, not PQC ready

TrustVC

wrapper over Verifiable Credential 2.0 (and deprecated OpenAttestation)

TrustVC - Verifiable Credentials Platform
TrustVC/trustvc

Blockcerts

Blockcerts : The Open Standard for Blockchain Credentials
Blockcerts V3 aligns to W3C's Verifiable Credentials & Decentralized Identifiers