Sarah Idahosa holds two distinct roles at the intersection of African Web3: she leads Africa partnerships and sales for MANSA Finance, a UAE-based stablecoin liquidity provider backed by Tether, and she founded Women In DeFi (WiDeFi) in 2022, a pan-African initiative designed for women and open to all genders that trains participants to engage with blockchain technology.

In a TechCabal Quick Fire interview published June 26, 2026, Idahosa described stablecoin infrastructure as "closer to scaled payments than generally recognized," and identified regulatory restrictions, liquidity constraints, and off-ramp gaps as the three remaining structural blockers to broader adoption.

The combination of roles is not coincidental. WiDeFi partners include StarkNet Africa and Base Africa, two networks that also underpin MANSA's own on-chain operations. MANSA runs two liquidity pools on Base, the Ethereum Layer 2 network developed by Coinbase, which reached a peak total value locked of $5.6 billion in October 2025, representing approximately 46.6 percent of all Layer 2 DeFi TVL at that time.

Rather than requiring payment companies to park idle cash in bank accounts across multiple countries before sending money, MANSA extends one-to-five-day credit lines denominated in USDC or USDT (two of the major dollar-pegged stablecoins widely used in emerging markets). That model lets fintech operators move money across borders without the upfront capital commitment that has historically constrained smaller companies.

MANSA's numbers offer concrete evidence that demand exists. The company processed $394 million across more than 40 currency corridors since August 2024, including $11 million in on-chain settlements during January 2025 alone. In June 2026, Esca Finance tapped MANSA's settlement rails to offer same-day payouts across Nigeria, Ghana, and the XAF/XOF franc zones covering francophone West and Central Africa.

Esca Finance CEO Shalom Osiadi said: "MANSA's settlement-first USDT rails have strengthened our ability to deliver same-day settlements across key African corridors, helping Esca scale more efficiently with tier-one remittance players."

Esca processes between $75 million and $120 million in monthly transactions, and MANSA expects to handle 10 to 20 percent of that volume. The macro backdrop supports the push: sub-Saharan Africa recorded more than $205 billion in on-chain value between July 2024 and June 2025, a 52 percent year-over-year increase, with stablecoins accounting for 43 percent of regional crypto volume.

Nigeria sits at the center of all of this. Since 2019, the country has accounted for 60 percent of sub-Saharan Africa's stablecoin inflows, making it MANSA's most important corridor and its most complicated. The IMF flagged "digital dollarization" as a concern in its June 2026 report, warning that widespread USDT adoption could erode the effectiveness of domestic monetary policy in countries where central banks are already managing currency pressures. The Central Bank of Nigeria has alternated between crypto restrictions and engagement since 2017, and its precise regulatory posture as of mid-2026 remains an active variable for any operator building on Nigerian payment rails.

MANSA-style USDT expansion through Nigerian fintech partnerships will test how far those frameworks extend. Idahosa also pointed to China-Africa trade as a specific use case that benefits from this infrastructure. Small and mid-sized West African importers of textiles, electronics, and commodities from China have relied heavily on informal intermediaries and premium FX conversion. Stablecoin settlement, she argued, removes much of that friction and enables seamless cross-border transactions for SMEs.

WiDeFi, meanwhile, is generating builders rather than just learners. More than 30 percent of program participants have launched their own blockchain projects, according to figures from February 2025. WiDeFi reported a community of 5,000 members in February 2025; by mid-2026, the organization had educated more than 8,000 women through its training programs, with active chapters in Nigeria, Kenya, and Ghana. The two figures likely reflect different measures, community membership and cumulative training participants respectively, and should be read as complementary data points rather than a single tracked series.

Institutional partners now include Propel, StarkNet Africa, Base Africa, and Cassava Network. Idahosa's own entry into Web3 was nonlinear. She came to blockchain during the COVID-19 pandemic through affiliate marketing, took a loss on an early Ethereum position, and enrolled at Nirvana Academy in Nigeria to study blockchain formally, having previously pursued a microbiology career path. She became a tutor at Nirvana Academy before transitioning to a Web3 community consultant role at the African Tech Summit, and eventually founding WiDeFi. That unconventional route from life sciences to crypto education directly informs how she designs programs for women who do not come from technical backgrounds.

She has described the organization's success in terms of participant financial outcomes rather than community headcount, telling Technext24 in 2023: "The profit I have made from training these women is the satisfaction of knowing that these females went from nothing to having a few thousand dollars."

Looking ahead, MANSA's geographic scope is expanding beyond Africa. An April 2026 partnership with Stables, an API-first infrastructure company, targets Asian markets where 60 percent of global stablecoin flows originate but only 1 percent of local banks currently support the technology. Idahosa's Africa-specific role becomes more consequential as that expansion proceeds. The approach she is executing across Nigeria, Ghana, and the franc zones, building local partnerships, navigating layered regulatory environments, and extending credit-backed settlement into underserved corridors, points toward a replicable market-entry model for regions where stablecoin infrastructure is still maturing.

For fintech operators building cross-border settlement corridors, the immediate implication is a credit-backed liquidity layer that removes the need for pre-funded multicurrency accounts. For developers building on Base, MANSA's two live liquidity pools represent active infrastructure already processing institutional volume. And for women entering Web3 through WiDeFi's free training programs, the initiative is producing a measurable share of founders: more than 30 percent of participants have launched projects of their own. The infrastructure and the talent pipeline are being built in the same region, by many of the same networks, at the same time.