Polymarket, a crypto-native prediction market, has started supporting Bitcoin deposits for the time being Lightning Network. This feature uses architecture from SparkBitcoin protocol designed for payments with stablecoins.
In a post on X, Spark he said users can deposit BTC on the platform with more speed and privacy than the old method offered.
This move increases the financial pressure to he started in October 2025, when Polymarket switched Bitcoin deposits on-chain. Those deposits have to wait: most Bitcoin machines require three to six confirmations, a window of 10 to 60 minutes, before the platform names an account.
The chain method had the lowest cost, indicating the cost of control. For a trader looking for a position in the live market, delays are fees and costs.
Lightning and Spark close the gap. Spark validates Bitcoin transactions during broadcast, checking for double use risk, fee adequacy, and flags instead of fees.
The protocol verifies a reservation within a second and based on the authentication risk, Spark markets the production as zero-conf.
Polymarket does not need to manage authentication or manage it automatically Lightning principle; One Spark SDK works on blockchain, Lightning, and stablecoin rails.
Spark maintains automatic deposits. Each wallet binds the user’s keys, so the protocol, not Polymarket, carries the burden of work, and users save money until they make a transaction.
Spark counts wallet providers such as Breez, Xverse, and Keke among the groups building on the same track, and Tether director Paolo Ardoino has praised the process as a way to program Bitcoin on Lightning.
Polymarket development over the years
Time is of the essence for a growing company.
Launched in 2020, Polymarket became prominent in the US presidential election in 2024 and has added the word Chainlink, income markets, and new competition with a competitor Kalshi.
Fast, cheap money lowers the barrier for Bitcoin holders who make up a large part of the crypto audience, and gives Polymarket a new solution to a more entrenched adversary.
