Is true justice and achieved at the end of the trail scene

Yes, true justice is achieved at the end of the trail scene, however, not mercy. At the end of the trail scene, Shylock is forced to give up all his fortune to Antonio for attempting to take his life, and Shylock is also forced to convert to Christianity, and all of these is according to law. besides, although Shylock signed a contract with Antonio on getting his pound of flesh, there is nothing written about taking his blood and so it is perfectly legal for Portia to take advantage of the mistake to attack Shylock. However, although true justice is given to Shylock, there is no mercy given. Although Portia knew about the fact that Shylock wanted revenge for the humiliation and disgrace Antonio gave him, she charged him mercilessly, taking all the evidence possible to land Shylock in a really bad situation. However, Antonio may have given Shylock some mercy by promising to give Shylock's fortune to Jessica after Shylock's death, however, it is Antonio's personal will and Shylock did not get any advantage, so true mercy is not really present.

P.S

There may be true justice given to Shylock, however, Portia is breaking some rules herself. In those days, women were not allowed into the court, and Portia broke the rule, thus making whether true justice is present variable.