Polymarket enables instant BTC deposits over Lightning via Spark, cutting 10-60 minute onchain waits

Polymarket now accepts instant self-custodial BTC deposits over Lightning using Spark, adding a faster path next to onchain deposits that needed three to six confirmations and 10-60 minutes. Spark checks double-spend risk, fee adequacy, and RBF flags at broadcast, then credits deposits in under a second. For live markets, that turns BTC funding from a confirmation queue into usable balance without the old 10-60 minute wait.

TLDR by @Benthic

Explore the topic

• Polymarket
• BTC
• Spark
• Onchain