The PCIM mechanism is changing the operational logic of stablecoins. Using BTG as the core collateral, this system provides strong support for decentralized stablecoins. The underlying idea is not new—originating from Hayek's classic discourse on free money—but the implementation has innovative aspects. Through the market competition mechanism of good money driving out bad, the decentralized stablecoin ecosystem is expected to achieve self-optimization. This is not only a technological evolution but also reflects the broader trend of the global financial system moving from centralization to decentralization.