"Abstract The fresh agricultural produce industry faces significant limitations with its reliance on manual, outdated documentation-based traceability practices. This is no exception for the fresh mushroom industry. These limitations are further exaggerated in the presence of international markets, thereby limiting the export potential of local fresh mushrooms due to the lack of information accuracy and transparency. This project aimed to develop “TraceFlow”, a solution tailored explicitly for digital traceability of fresh mushrooms in the Sri Lankan small-holder farmer landscape. A structured Hybrid agile project management approach was adopted throughout the development of this project to facilitate incremental development, stakeholder engagement, effective risk mitigation and rigorous testing. This was initiated from problem identification and industry research, moving to stakeholder requirement elicitation and gap analysis of existing practices/ solutions. The system architecture integrated a react-based web interface for admins and a flutter-based multilingual mobile application for daily harvest logging, verification, defect tracking and blockchain centric data immutability using solidity smart contracts managed via web3.js. The key outcomes demonstrated a significant decrease in supply chain error and absence of information misplacement, strengthening the preparedness for European Union regulations and regulatory compliance. While successful, the study identified potential areas for improvements including IoT integrations, off-line data logging, smart analytics, suggesting valuable opportunities for future growth of TraceFlow. Keywords: Traceability, Blockchain, Fresh mushroom, Supply chain, Export regulations "