Dimas Saputra
Jurnal Teknologi dan Inovasi, Vol. 1 No. 2 (2026), pp. 70-80
Specialty coffee buyers increasingly ask for verifiable information about origin and processing, which smallholder cooperatives struggle to provide. This paper designs a permissioned blockchain in which farmers, cooperatives, processors, and exporters record harvest, processing, and shipment events, and buyers verify a lot through a QR code. A pilot with two cooperatives recorded 340 lots over one harvest season. Recording an event took a median of 1.8 seconds, and the cost of operating the network was below one percent of the price premium paid for traceable lots. Interviews showed that farmers valued being named on the provenance page, while cooperatives raised concerns about data entry during peak harvest. The pilot indicates that permissioned blockchains can support traceability if data entry is kept simple.
Keywords: blockchain; supply chain; traceability; agriculture; coffee
This section introduces the problem of blockchain addressed in this study, reviews the main approaches reported in prior work, and states the research objectives.
We describe the data, the proposed approach, the baselines, and the evaluation protocol used to assess the results summarised in the abstract.
The results are presented and compared with the baselines. Limitations and practical implications for deployment are discussed.
The study shows that the proposed approach is effective for the stated objectives and outlines directions for future work.