The halal industry in Indonesia faces challenges in ensuring transparency and trust in the supply chain, such as data manip ulation and limited traceability. This study aims to explore the implementation of blockchain technology to overcome these problems, focusing on increasing efficiency, transparency, and consumer trust. The research method involves interviews with halal industry players, secondary data analysis from related reports, and simulation of blockchain implementation through digital recording of raw material, certification, and distribution data. The results show that blockchain enables decentralized data recording that cannot be manipulated, thereby increasing supply chain transparency up to 40% faster than traditional methods. This technology also strengthens data integrity by implementing smart contracts, which ensure Sharia compliance at every stage of the process. Consumers can verify the halalness of products in real time through QR codes, increasing trust in local halal products. In addition, blockchain adoption helps manufacturers comply with national halal standards more efficiently and opens up opportunities for increasing exports by up to 30% through compliance with international standards. This study proves blockchain can be a strategic solution in overcoming transparency challenges in the Indonesian halal industry, supporting digital transformation efforts, and strengthening the country’s position as the world’s halal economic center. Collaboration between government, certification bodies, and industry is needed to maximize the implementation of this technology.