Only what you elect.
A share contains the specific claim you chose, the level of evidence behind it, and the date that evidence represents. It does not expose unrelated accounts, documents, counterparties, balances, entity structures, or any other record you did not elect to include.
Each share is scoped to a named recipient and a stated purpose. It receives an expiration at creation and can be revoked instantly. Every platform view is written to the audit log so the record shows when the share was accessed. Revocation blocks the next request; the platform does not continue serving a cached copy.