The most serious problems are often hidden in unseen places.

A vaccine stored under the wrong conditions may still look fine in the bottle when taken out, but once injected into the body, it turns into sugar water; a high-priced Wagyu beef that is thawed and refrozen during transportation still appears bright red and tempting to the naked eye, but in reality, its proteins have already broken down and denatured—these are the harsh realities of cold chain logistics.

In traditional transportation systems, this is called routine operation. Logistics companies try to save money by turning off refrigeration, then turning it back on near the unloading point, and producing a "temperature compliance certificate" that looks perfect, as if no issues occurred during transit. Consumers may unknowingly eat false-positive products, and public health risks are thus hidden.

But what if goods could remember their own journey?

A certain project’s Oracle solution attempts to do this—using blockchain’s tamper-proof features to attach a "thermal record" to the product. Each batch of goods can record a complete temperature curve, and any deviation outside the safe range will be logged, ultimately triggering automatic asset depreciation or destruction mechanisms on the chain. This fundamentally changes the cost of counterfeiting.

How is it done? Low-power temperature sensors are embedded inside the cargo containers, integrated with the company’s SDK. These sensors don’t write data to local cards or company servers; instead, via NB-IoT or 5G networks, they send a hardware-signed temperature data point to the Oracle node network every 10 minutes. The data is bound to the on-chain assets in real-time.

Once the temperature exceeds the boundary, the corresponding on-chain asset value immediately drops, or it is marked as discarded. This prevents logistics companies from playing games by turning off the cooling system to cut corners—because it can’t be hidden, nor can the data be altered.

This logic may seem simple, but it solves a big problem: linking the real-world physical state with digital assets, breaking the space for information asymmetry. Consumers can see the complete history of the goods, and merchants cannot use false certificates to deceive.

For the entire cold chain industry, this is like installing a pair of X-ray eyes.