Describe the students' full names and grades in Intro to BlockChain course.
student's full names = f_name, l_name;
SELECT T1.f_name, T1.l_name, T2.grade FROM student AS T1 INNER JOIN registration AS T2 ON T1.student_id = T2.student_id INNER JOIN course AS T3 ON T2.course_id = T3.course_id WHERE T3.name = 'Intro to BlockChain'