Amboss has activated RailsX, a Lightning-native exchange layer that allows users to trade bitcoin against stablecoins without relinquishing custody, marking a shift in how dollar-denominated liquidity can move across Bitcoin infrastructure.

The launch introduces two trading pairs, USDT-L and USDC-L, issued by Speed Wallet, and opens them to peer-to-peer trading across the Lightning Network. Trades route through existing Lightning channels and settle atomically within seconds, with no centralized order book or intermediary holding user funds.

The release moves stablecoin functionality on Lightning beyond experimentation. While the concept of dollar-pegged assets on Bitcoin’s…

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