Can people with view-only links see blocks?

No, blocks can only be seen by collaborators who are using the Airtable web app or desktop app.

So if I’m given “read-only” permission level for a base, then I’ll be able to see the blocks but not with a share view link.

Also, if I have editor permission level to Base A, but only a share view link for Base B, then I still won’t be able to view blocks in Base B?

Thanks!

That is correct.

(Also, from a security standpoint, you should note that if you have “read-only” permission level for a base, you can view & download all the data from that base for your own personal usage.)