Put the potatoes in a pot and cover with the clam juice. Bring to a boil over medium heat and cook until the potatoes are fork tender, about 20 minutes. Remove the potatoes with a slotted spoon and place in a bowl. To the cooking liquid, add the onion and bay leaf; bring to a simmer for 3 minutes. While the potatoes are still hot, mash with a hand masher and set aside. Add the cod to the simmering broth and cook until the fish is opaque, about 3 minutes. Remove the fish with a slotted spoon and add to the mashed potatoes.
Add the eggs, cilantro, hot sauce, and salt to the fish and potato mixture. Mix until well combined. Cover with plastic wrap and refrigerate until completely cooled and firm, at least 4 hours or preferably overnight.
Preheat the oven to 400 degrees F. Coat a baking pan with nonstick cooking spray. Spread the bread crumbs on a plate.
Using an ice cream scoop, roll the chilled fish and potato mixture into 2-inch balls. Then roll each ball in bread crumbs to coat completely. Put the codfish balls on the prepared pan and spray the tops lightly with nonstick cooking spray, this will make them really crispy. Bake until the codfish balls are nicely browned, 20 to 25 minutes. Put the codfish balls on a platter and garnish with cilantro.