Polymarket Launches Bitcoin Lightning Network Instant Deposits, Integrates Spark Protocol

BlockBeats News, July 8th, Predictive market platform Polymarket announced its support for instant, self-custodial deposits via the Bitcoin Lightning Network, powered by the Spark protocol. Compared to the previous on-chain deposit method that required 3 to 6 block confirmations, taking about 10 to 60 minutes, the new solution enables instant deposits, reducing the deposit threshold and transaction costs.

According to the announcement, Spark can complete double-spend risk, fee, and Replace-by-Fee (RBF) checks during transaction broadcasting, achieving "zero-confirmation" deposits. It also supports on-chain, Lightning Network, and stablecoin payment channels, without the platform needing to operate a Lightning Network node.

Polymarket stated that this move will further enhance Bitcoin users' fund efficiency and strengthen its competitiveness against its rival Kalshi.