Prediction markets actually have a gameplay that most people overlook.

If you want to confirm the truth of something, there's no need to ask around for sources. You can open a prediction contract in the market and buy the side that is obviously wrong—for example, deliberately lowering the price of the correct answer.

What's the cleverness of doing this? If someone truly has inside information and knows the answer, their most rational choice is to buy the correct side to make a profit. This effectively puts the cost of the truth directly on the table.

From another perspective, the act of buying a particular option itself becomes a form of information disclosure. This is a fully decentralized reward mechanism—no middlemen, no need to find informed parties in advance. The information holders are automatically attracted by economic incentives. In terms of intelligence, it cleverly bypasses the hardest step: identifying who holds key information. Market price changes will do this work for you.