STON.fi has launched cross-chain swaps for USDT and USDC, connecting The Open Network and TRON with major EVM-compatible blockchains. The rollout gives users a self-custodial route for moving stablecoins across previously fragmented liquidity environments.
The service supports Ethereum, BNB Chain, Polygon, Arbitrum, Base, Avalanche and Robinhood Chain, alongside TON and TRON. STON.fi is using its Omniston execution layer to coordinate routing without requiring users to deposit funds with a centralized exchange.
Atomic Swaps Reduce Bridge and Custody Exposure
Omniston uses Hashed Timelock Contracts to coordinate atomic settlement between participating networks. Each swap either completes on both sides or fails entirely, reducing the risk of funds becoming trapped in an incomplete cross-chain transaction.
The structure avoids traditional wrapped-token issuance and conventional bridge custody models. Users retain control of their wallets while independent liquidity providers, known as resolvers, compete to complete the requested exchange.
STON.fi Dev CEO Slavik Baranov said the objective is to make cross-chain transfers resemble ordinary same-network swaps. Omniston handles routing and settlement complexity behind the interface while showing users the expected final amount before confirmation.
That model addresses one of stablecoin infrastructure’s persistent problems: liquidity fragmentation across chains. USDT or USDC held on one network may not be directly usable in applications operating elsewhere without exchanges, bridges or several manual transactions.
Initial Limits Keep the Rollout Retail-Focused
Most swaps are expected to complete within approximately 15 to 40 seconds, depending on network conditions and resolver availability. The interface provides a quoted output amount before users authorize the transaction.
The initial rollout applies a $1,000 transaction limit, keeping the service more suitable for retail transfers and smaller liquidity movements than institutional settlement. Broader adoption will depend partly on whether STON.fi raises that cap after observing early performance.
TRON support is particularly relevant because the network carries a large share of global USDT activity. Linking it directly with TON and EVM liquidity hubs gives users another route between high-volume stablecoin environments without passing through a centralized trading venue.
The design still introduces dependencies on resolver liquidity, smart contract integrity and cross-chain execution reliability. Removing custodial bridges reduces one class of risk, but it does not eliminate contract vulnerabilities, routing failures or limited liquidity during stressed markets.
STON.fi has added a live self-custodial stablecoin route across TON, TRON and several EVM networks. The next useful indicators will be swap volume, failure rates, resolver participation, transaction-limit expansion and whether the system maintains predictable execution as cross-chain demand grows.