Stablecoin issuers and fintech-linked firms are launching payment-focused blockchains to control more of the settlement infrastructure behind US digital-dollar transfers.

Tether-backed Plasma, a blockchain optimized for cross-border USDT transactions, launched on mainnet on Sept. 25, 2025, after raising $24 million. Circle also launched the public testnet for Arc, an open L1 blockchain for stablecoin finance.

These developments signal a shift from generic blockchain infrastructure to payment-focused networks, as companies compete to own the rails underpinning stablecoin settlement.

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Fintech companies are also joining the race. Tempo, a merchant-focused settlement layer for high-throughput stablecoin transactions, went live. Stripe, which has acquired several stablecoin infrastructure startups, is positioning itself to control more of the payment workflow.

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Controlling the settlement infrastructure behind stablecoins is seen as a new 'revenue layer,' with entities capturing fees on every transaction. Experts predict this will be the next major battleground among crypto and fintech firms.