840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjMtMDEvMDA4YjllOTUtZWIzNy00ZGVkLWFhOGItYjVhODEwZDlhZjBmLmpwZw3D3D Continue Reading Previous Vitalik Buterin divulges the ‘largest remaining challenge’ in Ethereum