When it comes to decentralization, blockchain project teams are always eloquent. But here’s an awkward reality: on-chain applications actually know nothing about the external world. Price levels, market data, real-world asset values… these pieces of information are like blind men touching an elephant for blockchain. On-chain systems need an intermediary layer to transmit real-world information, and this link is often the most vulnerable part of the entire ecosystem.

This is called an "oracle" in the industry. Today, we’re talking about APRO, which plays this role. On the surface, its job seems dull—it simply inputs data into the blockchain. But if you truly understand its function, you’ll realize why it holds the lifeline of the entire chain.

**How to ensure data is authentic and reliable?**

Ordinary people think that data downloaded from the internet can be used directly, but in the blockchain field, this is a fatal mistake. A false price can cause a DeFi protocol to collapse instantly, resulting in losses ranging from millions to billions. So how does APRO prevent this?

First, it does not rely on a single information source. Instead, it synchronizes data collection from dozens of channels—different exchanges, mainstream media, authoritative information agencies—comprehensively scanning. This fundamentally reduces the risk of being misled by a single piece of garbage data. Second, every piece of data must undergo AI verification before being recorded on-chain. This system does two things: one, cross-validation—if a data point differs significantly from other sources, it is flagged with a warning; two, anomaly detection—catching outlier data that suddenly appears, which often signals an impending attack. It’s like conducting a thorough health check before the data is truly written onto the chain. Lastly, strict process isolation ensures that every link in the data flow has protective mechanisms.