Since crows are pretty smart maybe you could try placing treats in one of those puzzle pet toys (or make your own)? They'd probably enjoy the challenge and it might deter invaders, although the Jays (being corvids themselves) might figure it out, too.

Otherwise, you're limited to putting out treats to when they're nearby and can see you doing so. They're quite skittish though, so avoid looking at or towards them while doing so. Eventually they should acclimate to your putting food out and get more comfortable with you.

Left treats out and made sure they saw me as they ate them

Ideally you should find a resident couple. That way you know you're always interacting with the same birds. Then you just wait and offer them food and let them come get it instead of taking it to them. They observe you closely and they will remember and recognize you. The intention is to teach to them that you're not a threat and that you reliably produce food.

Or maybe blackmail.

Yeah, that's a tricky one! My local murder has to contend with seagulls that have wised up to the sounds they make when I drop by to feed them. I try to scare off the seagulls but then I scare off the crows too of course; only the crows that have a bit more trust with me come back.

I was thinking of feeding them smaller amounts, like about three peanuts here and there so the amount doesn't attract the attention of the ash'ole birds. Have yet to try it out tho.

Crow shrine

Probably plenty of bribes.

no idea but I think a crow in the park had previous problems with a dog and maybe specifically a golden retriever because one day we were walking in the park and it started doing this dive bombing thing out of no where and once it started it never stopped. I know my dog had never been around the crow previous.

So... What did you do to get off their shitlist?

Yes. The crows decided they didn't like me and my dog one year, and would swoop us. Now I have crows that come to my balcony for food and hang out even with the dog around, and the rest have all left me alone.