How the bridge works
• Polygon ↔ Ethereum: PING is locked on the source, wPING is delivered on the destination.
• Polygon ↔ Base: same flow between Polygon and Base.
• Convert POL / WPOL → USDT / USDC: swap stable-side without leaving the app.
• Fees are paid in POL on the source chain via LayerZero.
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