Zest Fresh - Blockchain-based Cold Chain Management for Food
Sector: Primary sector · Industry: Agriculture · Organisation: Zest Labs (Ecoark Holdings) · Maturity level: Production
Zest Labs uses IoT sensors with ZIPR codes and blockchain technology to monitor temperature, freshness, and quality of food throughout the entire cold chain. The solution captures data on harvest quality, aging speed, and microclimate conditions, enabling precise predictions of shelf life. The system is already operationally deployed across multiple regions in the USA and demonstrates measurable success in reducing food waste.
Documentation status
- Project status: Production
- Evidence: Evidence high
- Editorial review: Ufuk Avci, 15 April 2026
Description
Zest Labs (formerly Intellicheck) developed ZEST Fresh — a cold chain monitoring platform that combines IoT sensors with blockchain data security. Every refrigerated container, truck, and storage room is equipped with sensors for temperature, humidity, and shocks; all measurements are secured on the blockchain.
The cold chain is the most critical and least monitored part of the food supply chain. The problem: cold chain interruptions are often only discovered once products have already spoiled. Disputes over responsibility are difficult to resolve because conventional monitoring systems can be tampered with. Zest Labs solves this: IoT sensors capture cold conditions in real time; the data is immutably secured on the blockchain; smart alerts notify immediately when limits are exceeded. Special feature: ZEST Fresh uses historical cold chain data to create dynamic remaining shelf-life forecasts — a lettuce stored for 3 hours at 8°C instead of 2°C has measurably shorter shelf life. This dynamic information can be passed on to retailers, who can then initiate price reductions or accelerated sales. Legal relevance: the blockchain-secured temperature log can be used as evidence in liability disputes. Zest Labs has won several innovation awards and patented the dynamic shelf-life calculation.
Perspectives
B2B — organisations perspective
Food producers and logistics providers can maintain seamless cold chain records with Zest Labs' blockchain monitoring: every deviation is immediately detectable, liability issues can be clarified through immutable logs, and dynamic shelf-life forecasts reduce waste.
B2C — consumers perspective
Consumers can access the complete cold chain history of their food products via QR codes — enabling them for the first time to make informed decisions about freshness and quality.
Employees perspective
Employees in logistics and quality control receive data-driven decision support instead of relying on estimates. The system automates monitoring and sends alerts for critical deviations, thereby reducing workload.
Benefits
General
- Measurable reduction of food waste through precise cold chain monitoring.
- Improved product quality through continuous temperature and humidity control.
- Increased transparency and traceability through blockchain-based documentation.
B2B — organisations
- Significant cost savings through reduced losses and optimized logistics processes.
Employees
- Relief through automated monitoring and data-driven decision support instead of manual checks.
Challenges
General
- High initial investments for IoT infrastructure and blockchain implementation.
- Complex integration with existing logistics systems and training requirements for staff.
B2B — organisations
- Dependence on the reliability of sensor technology and potential scalability issues with large data volumes.
Employees
- Need to adapt to new data-driven working methods and handle complex technology.
Technology foundation
The solution combines IoT sensors for data collection with blockchain technology for secure and immutable storage of cold chain data. Blockchain ensures the integrity and traceability of the recorded temperature and quality data throughout the entire supply chain.
Implementation examples
Zest Fresh Cold Chain Monitoring USA
The company aimed to proactively prevent food waste and provide farmers and distributors with precise data for informed shipping decisions. The goal was to improve cold chain efficiency and reduce losses from spoiled goods.
Zest Labs already operates their blockchain-based cold chain solution in several US regions.
Zest Labs successfully implemented their Zest Fresh technology in several regions across the USA, demonstrating measurable success in reducing food waste. The solution combines IoT sensors with ZIPR codes attached to pallets and blockchain technology for secure data storage. The system continuously collects data on harvest quality, ageing speed, field conditions, and microclimate, enabling accurate predictions of shelf life.
The challenge of unreliable manual quality checks was solved through continuous sensor monitoring. Additionally, the lack of transparency in the supply chain was addressed by blockchain-based documentation.
Tags
Cold chain, IoT sensors, Food safety, Waste reduction, Supply chain transparency