Circle’s StableFX launches on Arc mainnet for 24/7 onchain FX

Circle just flipped the switch on StableFX, its onchain foreign exchange platform, bringing 24/7 currency trading to the Arc Layer 1 blockchain less than a week after the mainnet itself went live. The system enables institutional players to swap between more than 20 fully reserved stablecoins with atomic payment-versus-payment settlement, which is a fancy way of saying both sides of a trade settle simultaneously or not at all. The global FX market moves roughly $10 trillion every single day. Most of that volume still runs through infrastructure that closes on weekends, requires bilateral agreements, and takes one to two days to settle. What StableFX actually does StableFX pairs offchain request-for-quote pricing with onchain settlement on Arc. Think of it like getting your price quote the traditional way, but executing the trade on rails that never shut down and never require you to trust a counterparty with your funds during the settlement window. The atomic PvP mechanism is the key innovation here. In traditional FX, there’s a gap between when one party sends their currency and when the other party delivers theirs. That gap creates settlement risk, sometimes called Hershatt risk ...