When you think about trading infrastructure, the bottleneck usually comes down to one painful choice: speed or security. Either you sacrifice custody for execution, or you wait for settlement while your assets sit in centralized vaults.

Rails is changing that equation. The protocol achieves sub-millisecond order matching—that's matching speed you'd expect from high-frequency traders on traditional exchanges—while your capital remains locked in audited smart contracts. You're never giving up possession. Every transaction is verifiable on-chain, every balance is transparent, every trade settles with the security guarantees of the blockchain.

It's not a tradeoff anymore. You get the execution velocity of a centralized exchange with the custody assurances of self-custodial finance. The smart contract layer handles settlement instantly. The audits are public. Your funds never leave the protocol.

This represents a genuine shift in how trading infrastructure can function—merging CEX-grade speed with on-chain verification, removing the traditional security theater that comes with custody intermediaries.