No matter how secure smart contracts are or how transparent the blockchain becomes, if the data itself is fake, the entire system turns into a scam. This issue is often overlooked, but it is crucial to the stability of Web3.

Why is a decentralized oracle like APRO important? Simply put, blockchain is a "digital island"—it cannot access external information directly. Stock prices, weather data, sports scores—blockchains cannot fetch these directly. Traditional solutions involve using an intermediary (oracle) to transmit data, but the problem is that this intermediary can be attacked or manipulated.

APRO's approach is different. Instead of relying on a single data source, it pulls data from multiple trusted channels simultaneously, then performs cross-verification among network nodes, combined with AI risk scanning, before allowing data to be on-chain. In simple terms, it's like having a "data jury" to confirm the authenticity of information. It doesn't generate data itself; it only ensures that the data on-chain is clean, trustworthy, and tamper-proof.

Flexibility needed for practical applications is also considered. Real-time push mode is used for scenarios like price fluctuations and event results that require second-level updates. DeFi trading and insurance claims are not affected by delays that could lead to arbitrage. On-demand pulling is suitable for low-frequency but critical tasks—called only when truly needed, saving idle costs. Developers can think of it like ordering takeout: fetching off-chain information as needed, with controllable costs.

On the technical level, two key components are involved: one is an AI firewall that automatically detects abnormal transaction patterns and filters suspicious data; the other is a verifiable random engine that ensures fair node selection. These two defenses form the core mechanism of APRO's anti-tampering system.