Polymarket, a crypto-native prediction market, now supports instant Bitcoin deposits via the Lightning Network. This feature uses the infrastructure of Spark, the Bitcoin protocol built for payments and stablecoins.
In a post on X, Spark told users that they can now deposit BTC to the platform faster and more privately than the old methods offered.
The move extends a funding drive that began in October 2025, when Polymarket launched standard on-chain Bitcoin deposits. There was a wait time for these deposits. Most on-chain Bitcoin transactions require 3 to 6 confirmations and a 10 to 60 minute time frame before the platform funds your account.
On-chain routes now have higher minimum deposit amounts to reflect bridging costs. Delays and fees are both costs for traders who want to take positions in live markets.
Lightning and Spark close the gap. Spark validates Bitcoin transactions at the moment of broadcast, checking for double-spend risk, fee validity, and fee substitution flags.
This protocol deposits deposits within 1 second and absorbs verification risk. This is a design that Spark sells as zero conf.
Polymarket doesn’t require you to manage verification thresholds or run your own Lightning nodes. A single Spark SDK handles on-chain, Lightning, and stablecoin rails.
Spark self-custries deposits. Each wallet is tied to a user’s own keys, so the protocol, not Polymarket, carries the operational burden and users retain control of their funds until a transaction is made.
Spark counts wallet providers like Breez, Xverse, and Cake among its teams building on the same rails, and Tether head Paolo Ardoino has hailed the protocol as a path to programmable Bitcoin via Lightning.
Polymarket boom over the years
Timing is critical for companies in the growth stage.
Founded in 2020, Polymarket gained attention during the 2024 US presidential election, adding new competition from Chainlink’s oracle, profit market and regulated rival Karshi.
Faster, cheaper funding lowers the barrier for Bitcoin holders, who make up the majority of crypto users, and gives Polymarket a new answer to rivals that have been squeezing trading volumes.
