Multitude of pinning services united.
Readonly
Close all the services. Async semantics: every call should succeed.
List pinned CIDs.
Open all the services. Async semantics: every call should succeed.
Pin stream. Async semantics: every call should succeed.
Unpin CID. Async semantics: individual call failures do not propagate upstream; anything goes.
Static
Multitude of pinning services united.