Hey thanks for taking a look at this. We support identity providers (the one you linked), and access controllers.[1]
Identity providers work by cross-signing an external keypair with the generated OrbitDB key-pairs, and access controllers generally work by exposing a `canAppend` function that facilitates any kind of auth you want to perform. There's support for Metamask for example. OrbitDB is also used _in_ Metamask under the hood by our good friends at 3box.[2]
TallyLab, my application project, uses these in its IAM system and you can see the repos here.[3]
What I'd like to know is do they support authorization?