ZAR Universal (ZARU), South Africa's first institutional-grade rand (ZAR) stablecoin, has gone live on Arc and launched simultaneously as a founding currency pair on Circle StableFX.

StableFX enables 24/7 programmable onchain foreign exchange using fully reserved stablecoins and instant settlement. The platform is designed to simplify global digital currency conversions. For a pair like ZARU/USDC, that places rand-to-dollar conversion in an always-on market rather than inside the trading hours of any single banking system.

ZARU is issued by BlockTower under a licence from the Financial Sector Conduct Authority (FSCA). It is fully reserved and independently audited, with every ZARU in circulation backed one-to-one by South African rands (ZAR) held onshore.

USDC, a fully reserved and transparent payment stablecoin redeemable 1:1 for U.S. dollars, is issued through regulated entities of Circle. Both ZARU and USDC settle on Arc, an open layer-1 blockchain developed by Circle and purpose-built for financial markets, real-time money movement and agentic economic activity.

The ZARU/USDC pair will settle atomically onchain through StableFX's Request-for-Quote engine. Under this structure, both sides of a trade settle or neither does, removing the counterparty risk that characterizes traditional foreign exchange. In conventional FX, the two legs of a trade can settle at different times, leaving each side exposed until the other delivers.

For the ZAR, which has historically been constrained by correspondent banking friction and limited trading windows, the launch represents a structural change, according to the announcement. That friction reflects how correspondent banking works: cross-border payments pass through intermediary banks, each applying its own operating hours and processing cutoffs, while settlement on StableFX runs continuously instead.

Luno will serve as the primary exchange venue for ZARU/USDC liquidity, bringing its regulated trading infrastructure and institutional client base to the network. As institutional market makers join StableFX and liquidity deepens, the pair is expected to provide greater access to the rand within global digital asset markets.

“StableFX was built to bring institutional FX onchain – with atomic settlement, RFQ execution, and real liquidity from day one,” said Nikhil Chandhok, Chief Product and Technology Officer at Circle. “We welcome ZARU as the first African stablecoin on the platform, bringing local regulatory oversight and the high standards of the Circle Partner Stablecoins program to institutional markets.”

Who is building #stablecoin rails across #Africa ? A key institutional stablecoin is #ZARU , a #Rand -pegged stablecoin backed by @LunoGlobal @ZARUniversal @StandardBankZA @MooreSAfrica @sanlam @EasyEquities pic.twitter.com/eCmo0kLtC9 — BitKE (@BitcoinKE) March 4, 2026

“With ZARU live on Arc Mainnet, the rand now has global institutional reach – backed one-to-one by reserves held onshore in South Africa. Programmable money supported by institutional market makers onchain, the infrastructure is now in place” says Vighnesh Patel, CEO at BlockTower.

The reserve structure was designed to meet the requirements of institutional counterparties and to qualify for integration into enterprise-grade global networks such as Arc, the announcement said.

“Globally compliant liquidity is the foundation of any serious institutional digital asset strategy,” said James Lan, CEO at Luno. “ZARU gives institutions a ZAR-denominated settlement that meets the regulatory bar, connected to a global network they already trust. Local compliance, global reach – that's exactly what we've been building towards.”

Per the announcement, the next markers are the arrival of additional institutional market makers on StableFX and the depth ZARU/USDC liquidity reaches on Luno. As the first African stablecoin on the platform, ZARU's run as a founding pair will also be the reference point for how onchain rand access develops from here.