Spec
https://github.com/w3c-ccg/did-pkh
did:pkh is a generative “pseudo-DID method” like did:key that generates a DID document from blockchain addresses, conformant with the CAIP-10 specification for expressing blockchain addresses (usually based on public key hashes or “pkh”). This allows the keypairs driving most major blockchain identity systems to generate instantaneously a “pseudo-DID” (essentially a did:key) with an account. This allows short-lived, low-security DIDs to be generated on the spot anywhere a blockchain “web wallet” can be used, leaving security, account recovery, and other hard problems on the side of the blockchain that governs the address.