Polymarket launches instant Bitcoin Lightning Network deposits, integrates Spark Protocol.
2026.07.08 10:55:17
Prediction market platform Polymarket has announced support for instant, self-custodial deposits via the Bitcoin Lightning Network, with the new feature backed by the Spark Protocol. Compared to prior on-chain deposit methods that required waiting for 3 to 6 block confirmations and took 10 to 60 minutes, the new solution delivers near-instant settlement while lowering deposit barriers and transaction costs. According to details, Spark can conduct checks for double-spend risks, transaction fees, and Replace-by-Fee (RBF) at the time of transaction broadcast, enabling "zero-confirmation" posting. It also supports on-chain, Lightning Network, and stablecoin payment rails, removing the need for the platform to operate its own Lightning Network nodes. Polymarket noted that this step will further boost Bitcoin users' capital efficiency and strengthen its competitiveness against rival Kalshi.
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