Keltham is in fact currently thinking about whether he can find a one-inch iron helmet and, if so, if there's any reasonable way he can test whether it blocks emanation divinations, but he's really not seeing how to test that by which he can know that the Conspiracy isn't selectively blocking things.  If they can fake his own spell signature on the truthspell, they can do an awful lot - and if they can't do that, truthspells are unbeatable that way, which doesn't sound like it allows Golarion to be such an untrusting wreck.

This also reminds Keltham to perform a Detect Magic and look around the shop that way, though he's pretty sure what he'll find.

Keltham is in fact currently thinking about whether he can find a one-inch iron helmet and, if so, if there's any reasonable way he can test whether it blocks emanation divinations.  But Keltham is really not seeing a method to test that, by which he can know that the Conspiracy isn't selectively blocking divinations from the helmet only when they please.  If the Conspiracy can fake his own spell signature on the truthspell, they can do an awful lot - and if they can't do that, truthspells are unbeatable that way, which doesn't sound like it allows Golarion to be such an untrusting wreck.

This also reminds Keltham to perform a Detect Magic and look around the shop that way, though he's pretty sure what he'll find.

Keltham is in fact currently thinking about whether he can find a one-inch iron helmet and, if so, if there's any reasonable way he can test whether it blocks emanation divinations.  But Keltham is really not seeing a method to test that, by which he can know that the Conspiracy isn't selectively blocking divinations from the helmet only when they please.  If the Conspiracy can fake his own spell signature on the truthspell, they can do an awful lot - and if they can't do that, truthspells are unbeatable that way, which doesn't sound like it allows Golarion to be such an untrusting wreck.

This also reminds Keltham to perform a Detect Magic, as he's been doing occasionally, and look around the shop that way.  Though he's pretty sure what he'll find.