Stablecoins backed by emerging-market currencies are moving from niche experiments to institutional infrastructure, with South Africa's ZARU and Circle's Arc blockchain signaling a major shift in how global finance settles transactions. The trend reflects growing demand for on-chain versions of currencies like the South African Rand, Brazilian Real, and Mexican Peso, creating new liquidity pools and reducing reliance on dollar-denominated assets for cross-border payments.

Why Are Emerging Markets Building Their Own Stablecoins?

For decades, emerging-market traders and institutions had limited on-chain options. They could hold US Dollar stablecoins like USDC or USDT (Tether), but that meant converting their local currency first, paying spreads and fees in the process. Now, BlockTower's ZARU stablecoin, backed 1:1 by South African Rand reserves held at Standard Bank, offers a direct on-chain bridge.

The demand is real. Non-USD stablecoin supply has grown 50 times since 2020, expanding from $44 million to $2.20 billion, according to research cited in the announcement. The Brazilian Real has seen trading volume compound at roughly 20% per quarter over two years, reaching $5.3 billion, while the Mexican Peso has set successive quarterly trading records. The Rand, one of the most actively traded emerging-market currencies globally, ranks among the most liquid and heavily traded emerging-market currencies, with strong bilateral trade flows from a resource-rich, industrial, and services economy.

ZARU's listing on Luno Global, a major regulated crypto exchange, marks the first time an institutional-grade Rand stablecoin has accessed a large secondary market. The exchange now offers ZARU/USDT and ZARU/USDC trading pairs, giving the Rand its first continuous, 24/7 on-chain secondary market and direct links to the world's two largest dollar stablecoins.

How Does Institutional-Grade Stablecoin Infrastructure Work?

• Reserve Management: ZARU is backed 1:1 by cash-equivalent reserves held in a segregated account at Standard Bank, with Sanlam Specialised Asset Management managing the underlying assets and Moore Johannesburg attesting reserves monthly.
• Market Making and Liquidity: BlockTower partnered with Currency Hub, an authorised Financial Services Provider regulated by the Financial Sector Conduct Authority, as ZARU's dedicated market maker to quote two-way prices on exchange-listed pairs, ensuring continuous liquidity around the clock.
• Dual Access Models: ZARU can be accessed through direct minting and redemption via the BlockTower issuance platform for qualified institutional clients, or through secondary liquidity on exchanges like Luno Global for broader market participation.
• Regulatory Compliance: BlockTower is an authorised Financial Services Provider and Crypto Asset Service Provider in South Africa, meeting local regulatory requirements while enabling cross-border settlement.

The infrastructure mirrors traditional finance's operational discipline. As Jacques Le Roux, CEO of Sanlam Financial Markets, explained the reserve management structure: "For institutional holders, the reserve management structure is the point. It is the same operational discipline we apply across our asset base, now standing behind a Rand stablecoin".

Le Roux, CEO of Sanlam Financial Markets

"Continuous liquidity is what turns a listing into a market," said Warren Deats, CEO of Currency Hub.

Warren Deats, CEO at Currency Hub

This liquidity enables treasuries and trading desks to move large amounts in and out of ZARU at competitive spreads, around the clock in secondary markets.

What Role Does Circle's Arc Play in the Stablecoin Ecosystem?

While ZARU focuses on emerging-market currency settlement, Circle is building broader infrastructure through Arc, its new Layer-1 blockchain designed as an "enterprise-grade, stablecoin-native economic operating system." Arc is scheduled for public mainnet launch on September 16, following a private mainnet phase and testnet that processed 502 million transactions involving nearly three million wallets.

Circle announced a "curated set of global financial institutions" serving as Arc's founding validator cohort, a list that reads like a who's who of traditional finance and crypto infrastructure. The validators include BlackRock, the Depository Trust and Clearing Corporation (DTCC), Galaxy Digital, Global Payments, Intercontinental Exchange (parent of the New York Stock Exchange), Mastercard, MoneyGram, SBI Group, Standard Chartered, Sumitomo Corporation, and Visa.

Circle

BlackRock plans to deploy its BUIDL fund (BlackRock USD Institutional Digital Liquidity Fund) on Arc, enabling institutional investors to "subscribe, redeem, and deploy fund assets within a single onchain environment." The DTCC will begin tokenizing its custodied assets on Arc in the second half of 2027, allowing market participants to "utilize third-party applications on Arc that may enable stablecoin-native settlement outside of DTC but against DTC-tokenized assets".

Circle's financial results for the second quarter of 2026 show the company navigating a challenging environment. Revenue and reserve income hit $701.3 million, slightly above Q1's $694 million but missing Wall Street's expectations by approximately $12 million. Net income from continuing operations totaled $48.2 million, down 12.4% from Q1, as operating expenses rose by $12 million to $254.5 million.

USDC, Circle's flagship dollar stablecoin, claimed a 27% share of the overall dollar-backed stablecoin market cap, down one point from Q1. USDC's market cap stood at $73 billion at the quarter's end, down from $76.8 billion at the end of Q1. However, USDC demonstrated strong transaction activity, with on-chain transaction volume hitting $14.8 trillion in Q2, averaging $163 billion per day. That quarterly total is up 151% year-on-year, though down nearly one-third from Q1's $21.5 trillion due to reduced activity by market-makers.

Circle CEO Jeremy Allaire attributed the profit decline to external factors: "The Q2 results reflect the current interest rate environment and a crypto market that has slowed, both are conditions outside our network." Circle's reserve return rate was 3.5% in Q2, down 66 basis points year-on-year but unchanged from Q1.

Looking ahead, Circle updated its "other" revenue projections for fiscal year 2026 to $310-$330 million, up from $150-$170 million, with $242 million coming from two presale rounds of ARC, the native coordination asset (token) of the Arc blockchain. The company also celebrated receiving a limited purpose trust charter from the New York Department of Financial Services on July 31, and approval from the U.S. Treasury Department's Office of the Comptroller of the Currency to launch a national trust bank called Circle National Trust.

The convergence of emerging-market stablecoins like ZARU and institutional infrastructure like Arc suggests a future where cross-border settlement happens on-chain, with local currencies and dollar stablecoins coexisting in regulated, liquid markets. BlockTower's vision extends beyond ZARU, with plans to launch stablecoins across key African and Asia-Pacific markets and position itself as the emerging-market stablecoin issuer and wallet-as-a-service provider of choice for capital markets and the payments industry.

As more emerging-market stablecoins move on-chain, cross-peg pairs between them become possible, creating liquidity pools and network effects that did not exist before, particularly with established financial institutions involved. This infrastructure shift could reshape how multinational companies, financial institutions, and traders settle transactions across borders, reducing friction and expanding access to global capital markets.