Atum emerged from stealth on September 22, 2026, after raising $13.5 million in seed funding led by Variant to launch what it describes as the first open payments network built specifically for global stablecoin money movement. The platform coordinates payment requests across chains, stablecoins and traditional payment rails, while leaving liquidity, custody, customer relationships and final settlement to independent participants. Settlement providers compete through quotes based on pricing, speed and risk, allowing senders to specify the asset they provide and receivers to request the asset they want. Atum says it does not issue a currency, operate a blockchain, fulfill payments or hold customer funds. Instead, it authorizes requests, selects quotes, orchestrates transfers and returns receipts confirming delivery. The network supports traditional applications and AI agents through protocols including x402 and MPP, with identity, policy controls and reversible payments built into the design. Founder and CEO Pete Cooling’s previous work leading Visa’s crypto product team and contributing to the Linux OpenWallet Foundation shaped the company’s emphasis on open standards and neutral infrastructure. Atum is open to builders through its website and documentation, with sandbox tools, CLI examples and API references available. The launch comes as stablecoin supply approached $303 billion in August 2026 and reported stablecoin payments reached between $401 billion and $527 billion during the first eight months of the year, highlighting demand for infrastructure that reduces fragmentation across chains and payment corridors.