Prediction-market platform Polymarket has switched on native Bitcoin funding: users can now deposit BTC over the Lightning Network in seconds, powered by Spark and without any stablecoin conversion.

“Starting today, Polymarket now supports instant Bitcoin deposits over Lightning, powered by Spark. Deposit BTC straight to Polymarket — faster and more privately,” Spark said. Spark is a Bitcoin scaling network that calls itself “the best way to build on Bitcoin,” part of a wider push to make BTC directly spendable across crypto apps.