In a medium bowl whisk to combine cold brew, chia seeds, and cocoa powder. Cover and refrigerate overnight.
In a medium saucepan combine 1½ cups raspberries and maple syrup. Bring to a boil, then reduce heat to simmer, stirring frequently, until raspberries are completely broken down. Transfer to a blender and blend until smooth.
Divide half the raspberry puree between 4 small glasses. Whisk chia pudding to break up any clumps, then top raspberry puree with chia mixture. Top with remaining raspberry puree. Garnish with remaining ½ cup raspberries and hemp seeds.