Polymarket just flipped the switch on Lightning Network deposits ⚡ The world's largest prediction market now accepts instant Bitcoin deposits. No more waiting 10-60 minutes for on-chain confirmation...
The tech powering this is called Spark — a Bitcoin L2 that validates transactions at broadcast time. Spark checks for double-spend risk, fee adequacy, and replace-by-fee flags before the transaction even hits a block. Then it credits your Polymarket balance in under a second. Zero-conf, but with real validation behind it.
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