Spray slow cooker with non-stick cooking spray. Place chicken in crock pot.
Combine soy sauce, balsamic vinegar, sugar, garlic, ginger, hot sauce, and 1/2 cup water in a bowl and pour over chicken. Cook on low for 6-8 hours OR high for 3-4 hours.
Once done cooking, pull chicken out and place on large plate. Mix together cornstarch and 1 tablespoon water in a small bowl and pour into remaining liquid in the slow cooker. Turn heat to high (if it wasn't already) and cook for another 15 minutes (or until sauce thickens a little bit).
Shred chicken and add back into liquid in slow cooker.
Serve over rice, topped with green onions and sesame seeds.
Notes
*Sriracha hot sauce is available at most grocery stores and Wal-Mart. It is a Thai chili sauce with amazing flavor. It cost me about $3 for a huge bottle of it and it is totally worth it. The flavor it adds is so yummy.