# Zest Fresh - Blockchain-based Cold Chain Management for Food

> 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.

**Sector:** Primary sector · **Industry:** Agriculture · **Organisation:** Zest Labs (Ecoark Holdings) · **Maturity level:** Production

Canonical URL: https://www.sapientblock.com/en/use-cases/zest-labs-kuehlkette-lueckenlos-ueberwachen

## 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.

## Benefits

- Significant cost savings through reduced losses and optimized logistics processes.
- 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.
- Relief through automated monitoring and data-driven decision support instead of manual checks.

## Challenges

- Dependence on the reliability of sensor technology and potential scalability issues with large data volumes.
- High initial investments for IoT infrastructure and blockchain implementation.
- Complex integration with existing logistics systems and training requirements for staff.
- 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.

## Sources

- [SEC EDGAR: Ecoark Holdings S-1 – Zest Fresh mit integriertem Blockchain-Support (regulatorisches Dokument)](https://www.sec.gov/Archives/edgar/data/1437491/000121390020006791/ea119764-s1a4_ecoark.htm)
- [PRNewswire: AgroFresh and Zest Labs Collaborate for Comprehensive Freshness Management](https://www.prnewswire.com/news-releases/agrofresh-and-zest-labs-collaborate-for-comprehensive-freshness-management-300862901.html)