Islamic criminal law in Aceh sharia courts hear and rule on both civil cases under Islamic law (such as divorce and inheritance) and criminal law under the "qanuns". However, civil cases continue to be the vast majority of cases heard by the court. In 2016 the courts received 10,888 first instance civil cases and 131 appeals, compared to 324 first instance criminal cases and 15 appeals. The sharia courts are part of the broader Indonesian legal system. Their decisions can be appealed to the Supreme Court, and their judges (including the chief judge) are appointed by the Supreme Court. Amnesty International said that they are
Sharia to enforce sharia restrictions on blasphemy and criticism of Islam over internet and social media. Sharia judicial proceedings have significant differences from other legal traditions, including those in both common law and civil law. Sharia courts traditionally do not rely on lawyers; plaintiffs and defendants represent themselves. Trials are conducted solely by the judge, and there is no jury system. There is no pre-trial discovery process, and no cross-examination of witnesses. Unlike common law, judges' verdicts do not set binding precedents under the principle of "stare decisis", and unlike civil law, sharia is left to the interpretation in each case