plc-did-resolver

Plc DID Resolver

This library is intended to resolve PLC DIDs and retrieve an associated DID Document from the "PLC Directory"

It requires the did-resolver library, which is the primary interface for resolving DIDs.

This DID Method is not considered "decentralized" at all, and will likely be replaced in the future.

DID Document

The DID resolver takes the DID and retrieves a document from the PLC Directory associated with that DID.

A minimal DID Document might contain the following information:

{
 		"@context": ["https://www.w3.org/ns/did/v1", "https://w3id.org/security/suites/secp256k1-2019/v1"],
 		"id": "did:plc:wuyiqd25zhsut5a2gc46iqoi",
 		"alsoKnownAs": ["at://okaynick.bsky.social"],
 		"verificationMethod": [{
 			"id": "#atproto",
 			"type": "EcdsaSecp256k1VerificationKey2019",
 			"controller": "did:plc:wuyiqd25zhsut5a2gc46iqoi",
 			"publicKeyMultibase": "zQYEBzXeuTM9UR3rfvNag6L3RNAs5pQZyYPsomTsgQhsxLdEgCrPTLgFna8yqCnxPpNT7DBk6Ym3dgPKNu86vt9GR"
 		}],
 		"service": [{
 			"id": "#atproto_pds",
 			"type": "AtprotoPersonalDataServer",
 			"serviceEndpoint": "https://bsky.social"
 		}]
 	}

Resolving a DID document

The resolver presents a simple resolver() function that returns a ES6 Promise returning the DID document.

import { Resolver } from 'did-resolver'
import { getResolver } from 'plc-did-resolver'

const plcResolver = getResolver()

const didResolver = new Resolver({
    ...plcResolver
    //...you can flatten multiple resolver methods into the Resolver
})

didResolver.resolve('did:plc:wuyiqd25zhsut5a2gc46iqoi').then(doc => console.log(doc))

// You can also use ES7 async/await syntax
;(async () => {
    const doc = await didResolver.resolve('did:plc:wuyiqd25zhsut5a2gc46iqoi')
    console.log(doc)
})();