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Polymarket has enabled instant self-custodial Bitcoin deposits through the Lightning Network using the Spark payment protocol. Funds are credited the moment a payment is broadcast, removing the 10-to-60-minute on-chain confirmation wait that has been Polymarket's onboarding tax since launch.
Why it matters
Prediction markets live and die by the gap between an event and a position. A deposit window measured in block confirmations has been a structural drag on Polymarket's growth, especially for users chasing fast-moving news markets where the price has already moved by the time funds settle. Spark's zero-confirmation model lets Lightning payments post in milliseconds, effectively collapsing that drag to zero.
Market impact
The integration does not change Polymarket's market structure, but it changes who can show up. Self-custodial Lightning rails let a global user base fund positions without touching a centralized bridge, which has been the friction point most often cited by retail users. For Bitcoin itself, every new high-volume destination settled in sats is another non-custodial on-ramp into the Lightning economy.
Source: [Polymarket Turns On Instant Bitcoin Deposits Via Lightning Network, Powered By Spark — Bitcoin Magazine](https://bitcoinmagazine.com/news/polymarket-turns-instant-bitcoin-deposits#webpage)
Frequently asked questions
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What did Polymarket actually launch?
Polymarket enabled instant self-custodial Bitcoin deposits through the Lightning Network using the Spark payment protocol. Funds credit the moment a payment is broadcast, replacing the prior 10-to-60-minute on-chain confirmation wait.
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How does Spark make Lightning deposits instant?
Spark uses zero-confirmation technology, which verifies and credits a Lightning payment as soon as it is broadcast rather than waiting for on-chain block confirmations. The end-to-end deposit window drops to milliseconds.
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Do users still custody their own Bitcoin?
Yes. The integration is self-custodial. Users fund Polymarket positions directly from their own Lightning wallets without depositing into a centralized bridge or exchange account.
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Why does instant deposit matter for prediction markets?
Prediction-market prices move on news in real time. A 10-to-60-minute settlement window has been a structural drag on traders chasing fast-moving markets, where the price often shifts before funds clear.
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What does this mean for Bitcoin and Lightning?
Polymarket is a high-traffic consumer venue. Routing its deposit flow through Lightning adds another non-custodial on-ramp into the Lightning economy and reinforces Lightning's role as default plumbing for high-throughput apps.
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