Stablecoins became the default rail for on-chain betting
Stablecoins have quietly become the default rail for on-chain betting. Where bettors once funded accounts with bitcoin, many now hold USDT or USDC instead, and the reasoning is not complicated. A dollar-denominated balance makes stake and payout arithmetic legible; a bitcoin balance does not.
The change matters because it alters what a bettor is actually exposed to. Holding BTC on a sportsbook means taking an unhedged position on bitcoin's price for as long as the funds sit there, on top of the wager itself. Stablecoins remove that second exposure, at the cost of introducing issuer and peg risk instead. Neither option is neutral.
Operators have followed the flow. Multi-currency support is now common, but stablecoin pairs tend to be the deepest and the cheapest to settle. On networks such as Polygon, Arbitrum and BSC, transfers are quick and inexpensive, which suits frequent, smaller wagers better than a settlement layer designed for high-value transfers.
The shift does not eliminate risk. Stablecoin issuers can freeze addresses, and a depeg is not impossible. Bettors weighing rails should understand that they are choosing between different kinds of exposure, not between risk and safety.