Barondeau, R. et Bali, M. (2025). Balancing Algorithmic Authority and Social Trust: Lessons from CHO Group's Blockchain Integration in Agri-Food Supply Chain. Dans BIOTC '25: Proceedings of the 2025 7th Blockchain and Internet of Things Conference, (p. 7-14). Association for Computing Machinery. https://doi.org/10.1145/3760550.3760552 Abstract : In a globalized and increasingly complex environment, food supply chains are fraught with information asymmetries, moral hazards, and opportunistic behavior. These issues not only impede collaboration among stakeholders, but also threaten the integrity, transparency, and traceability of food products. The resulting trust deficits not only impact operational efficiency, but also pose significant risks to food safety. This paper explores how blockchain technology, through its potential to establish algorithmic authority - a technology-enabled institutional trust - offers a new perspective on building trust in food supply chains. Our research is based on qualitative data collected from the case of CHO Group, a leading global olive oil producer, and its implementation of the IBM Food Trust blockchain platform. The findings highlight the importance of establishing a “trust equilibrium” within supply chains that balances relational, institutional constructs alongside technological solutions, and reveal that the algorithmic authority of the blockchain is deeply intertwined with existing social trust frameworks.