Indonesia as a country with a Muslim majority population is very concerned about the halal status of the food it consumes, including food in the form of fresh beef. The Indonesian Ulama Council has set the halal standard of fresh beef by collaborating with slaughterhouses that are closely monitored by the slaughtering process according to the halal standard according to Islamic law, but many illegal beef circulating does not comply with slaughter standards according to Islamic law and is difficult for Muslims to distinguish halal beef which is cut according to Islamic law and illegal beef. The purpose of this research is to help those who care about halal beef and make it easier for Muslims to find out the halalness of fresh beef using block chain technology