DID Method
The portion of a Decentralized Identifier URI before the second colon (did:METHOD:identifier) — names a registered algorithm for resolving the DID to its DID Document. Methods can be registry-free (did:key, the DID is the public key), DNS-anchored (did:web), blockchain-anchored (did:ion Bitcoin/Sidetree, did:ethr, did:cheqd), or anchored to other registries (did:peer, did:pkh). Over 100 methods are registered in the W3C DID Method Registry.