Function resolve_verified_in 

pub async fn resolve_verified_in<Context>(
    context: &Context,
    targets: &[IdentityTarget],
) -> Result<Vec<Option<String>>, IdentityUpdateError>
where
    Context: IdentityContext,

The verified resolver, the only reader of a GetInboxIds answer that picks an inbox: look the targets up in one request, load the identity updates of every answered inbox in one incremental batch, derive each inbox’s newest state, at most IDENTITY_DEPENDENCY_CONCURRENCY at once, and drop any answer whose state does not hold its target.