2/
Many have hoped that Bluesky decentralizes DID-PLC & https://plc.directory , or replace it with something decentralized.
And, I do think the Bluesky founders want to fix this — "plc" is short for "placeholder" after all.
But, it isn't decentralized yet.
Interestingly...
3/
Interestingly, the Fediverse already has a decentralized equivalent to https://plc.directory .
On the Fediverse it is where a Fediverse ID:
@joeblow@example·com
Is resolved using WebFinger:
https;//example·com/.well-known/webfinger?resource=acct:joeblow@example·com
Which points you to the activity page:
https;//example·com/users/joeblow
Which returns the activity actor JSON-LD.
(BTW, plc.directory also returns JSON-LD)