Have you seen the full process of a seasoned trader being liquidated? He did his homework—set stop-losses, studied candlestick charts thoroughly—yet he was defeated by a 2-second price delay. Afterwards, he asked a heartbreaking question: "Blockchain claims to be the most transparent, so why can't it even get an accurate price right?"

This is not an isolated case. Before 2024, everyone who is involved in DeFi is worried about the same thing—you're watching the charts and your positions on the screen, but where does that crucial price data come from? Is it reliable?

The problem looms like a shadow over the entire industry until someone decides to take serious action. Leo Su and Simon Shieh, founders of APRO, have seen enough project collapses caused by data opacity. Instead of patching things up, they drew a bold idea on a whiteboard: rather than making oracles just messengers, why not turn them into "data bodyguards" that can verify identities?

**The pain points are truly heartbreaking**

The DeFi protocols you use every day rely on underlying data that is as fragile as paper—many people don't even realize this. The traditional oracle approach is old-fashioned: fetch a price from an exchange → post it on-chain → done. It sounds simple, but there are many issues. The exchange data itself might be flawed, transmission could be delayed, or even manipulated. Your collateral, your positions, your set stop-losses—all are based on these "potentially faulty" data sources.

**A new approach: multi-layer verification**

APRO took a different route. Instead of relying on a single data source, they built a multi-layer security system—combining real-time AI quality checks, redundancy verification systems, and anomaly detection and alerts. Replacing individual efforts with a team, and manual checks with automated systems, they aim to block all avenues of cheating.