pledgor is the one pledging funds, anyone can add to a bounty to become a pledgor. No money is sent, it’s just a promise at this point.
Anyone can claim the bounty and become a pledgee (person receiving some, all, or none of the pledges).
Once any pledgor is satisfied with any of the proposed bounties (or if that was the one that was merged), the pledgors are at that point obligated to zap the dev’s bounty claim. Once the pledgor does this, the devs zapper will send a zap for the claim note, and clients can use this to confirm that the pledgor fulfilled the pledge.
If they don’t, everyone will be able to see that and their rating could be affected.
There are some attacks like using a fake zapper to claim bounties and lie about not receiving a zap, but for the most part it should work ok…