Mosta Launches MainUSD for Global Cross-Border Settlement

Mosta, an AI-native business banking platform built by Anton Lobintsev's company SquareFi, launched MainUSD on June 23, 2026, a US dollar stablecoin issued by Brale, a Des Moines-based, US-registered money services business that handles reserve management, compliance, and issuance for corporate stablecoin issuers. Mosta co-founder Denis Spasio said in the announcement, "Global businesses should not have to choose between the speed of stablecoins and the usability of traditional financial rails." Mosta and Brale's own materials describe MainUSD as supporting more than 20 public and enterprise blockchains, including Ethereum, Solana, Base, Polygon, and Canton, with fiat off-ramps in more than 150 countries and swap fees as low as zero depending on plan; these figures come from the companies' own press materials and have not been independently verified. Brale head of product Chase Merlin said the company built its infrastructure "to make it easy for companies like Mosta to launch their own stablecoins without having to build reserve management, compliance, and issuance infrastructure from scratch." MainUSD is designed to align with the GENIUS Act, the federal payment-stablecoin law signed in July 2025, whose implementing rules are still being finalized.

MainUSD joins a fast-moving wave of corporate stablecoin launches: MoneyGram launched MGUSD through Stripe's Bridge in June 2026, and Mastercard agreed to buy stablecoin infrastructure firm BVNK for up to $1.8 billion. According to data compiled by Reap, stablecoin payment volume reached roughly $390 billion in 2025, more than double the prior year, and B2B stablecoin flows grew more than 700% to over $3 billion a month by year-end; total stablecoin supply sits near $321 billion, with Tether's USDT and Circle's USDC accounting for more than 80%. Stablecoins still account for only about 1% of global cross-border payment flows, and some industry voices are skeptical that issuing a branded coin changes much structurally: Neo, chief executive of onchain neobank UR, told the On The Margin podcast that for many entrants "structurally at its core, nothing's really changing."

MainUSD's stated positioning toward AI agent payment execution fits a broader agentic-finance trend that StablecoinInsider's analysis links to platforms like Crossmint's agentic Visa card infrastructure; Mosta and StablecoinInsider both describe MainUSD as among the first stablecoins explicitly marketed for both human enterprise clients and autonomous AI agents as co-equal users. A single programmable settlement balance can simplify how agent workflows track and reconcile money movement compared to juggling multiple token balances, and cross-chain and fiat bridges give agents deterministic rails for micro-payments or conditional payouts. That said, cross-chain transfer finality, smart-contract allowances, and bridge custody latency introduce new failure modes that agent orchestration and compliance logging need to account for.

No source reviewed provides an independent reserve attestation or third-party transaction-volume figure specific to MainUSD; watch for Brale's standard monthly reserve attestations (it already publishes them for other clients and ran a private settlement proof-of-concept with Visa) to extend to MainUSD, and for any measurable AI-agent transaction volume in its first few months, which StablecoinInsider flags as the key signal for whether the AI-agent-native positioning is more than marketing.

MainUSD's specific technical claims, more than 20 supported blockchains and 150-country fiat reach, come from Mosta and Brale's own announcement rather than independent verification, and should be read as company-reported figures. A previously reported claim of $7.5 trillion in cumulative stablecoin settlement volume, attributed to an outlet whose coverage of this event could not be independently located, has been removed from this summary pending verification.