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Engineering

Two Second Settlement

Sep 14, 2026 · 6 min read

For most of the last fifty years, sending money across borders has meant routing a payment through a chain of correspondent banks. Each hop takes time, each bank takes a cut, and no one can tell you where your money is until it lands.

Where the time goes

A typical international wire passes through two to four banks. Each settlement window is measured in hours, and most of them only run during business days. String those windows together and you get the familiar "three to five business days".

Flux collapses that chain to a single hop. We convert the source amount to USDC, route it across the network, and convert to the destination currency at the other end — all inside the same transaction.

Two seconds, not three days

  • Conversion happens at the moment of settlement, so there's no overnight FX risk.
  • The payment posts to a single ledger, not four different bank statements.
  • Every settlement writes a receipt you can verify on-chain.

The result is a median settlement time of 2.1 seconds — 24/7/365.

Settle your next payment in seconds.

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