Support DID on-top of Cosmos SDK
HackAtom-V
10/30/2020
(To pitch on 11/4/2020)
Ming-der Wang <mingderwang@gmail.com>
Cosmos-did, Taiwan
To Implement An x/did Module With Starport
and for users to create DIDs with their cosmos accounts
My Goal Is
DID Stands For
Decentralized Identifiers, which is a kind of
"self-sovereign" digital identity solution proposed by W3C.
What Is DID?
Cosmos-did Is Compliant With
the W3C DID v1.0 Standard
The DID Verification Workflow
(example)
Holder (you)
image source: https://www.microsoft.com/en-us/security/business/identity/own-your-identity
Issuer (DMV e.g.)
Verifier (bar e.g.)
VC (Verifiable Credential)
user agent
Blockchain (a cosmos chain with x/did module)
Universal Resolver
identity hub
(to proof you are over 18)
DID Documents are registered on a blockchain
Many DID Methods Are Available
But, Cosmos DID Method Is Still Missing On The List
did:cosm:cosmos1xxx ...
Scheme
Method-specific-identifier
DID Syntax (W3C)
Method
where we can use Cosmos Address
This is just my current proposal for cosm method*
* alternative is to add :network: such as:
did:cosm:mainnet:cosmos1are9yj8e...
did:cosm:cosmos1are9yj8er0sj2tzffkyqlevncgwgqnc7ave50a
DID -> DID Document
resolve to a DID Document as follow;
demo
TODO list
* To finalize did:cosm spec with the community.
* To complete a DID universal resolver driver for cosm method. (uni-resolver-driver-did-cosm)
* To provide a javascript library for did:cosm DID resolution and verification (cosm-did.js)
* To implement a sample DID user agent (wallet) on mobiles for users to interact with DID with cosmos address.