AFAIK currently the only supported DIDs are web DIDs and placeholders that the docs indicate are intended to be temporary until there's something better and mor

AFAIK currently the only supported DIDs are web DIDs and placeholders that the docs indicate are intended to be temporary until there's something better and more decentralised to replace them. Basedon that description, I'm not so sure about their permanence. At least, that's what people have been saying, the docs don't seem to mention that (anymore?) so maybe the placeholders weren't really placeholders after all. The npm package still mention placeholders (https://www.npmjs.com/package/@atproto/plc?activeTab=readme https://www.npmjs.com/package/@atproto/plc?activeTab=readme) but the up to date Github uses "Public Ledger of Credentials" as a backronym (https://github.com/did-method-plc/did-method-plc https://github.com/did-method-plc/did-method-plc). Based on the docs it seems like a web DID is technically just as valid a permanent DID as a placeholder DID, though that depends on the server implementation of course.