I am tired of moving money from Ghana to Togo via Ecobank, before I move it to the mobile network here. Why can't there be something like Universal Mobile Money, powered by a Stablecoin, with USSD as the authentication interface? All the fiat-based cross-border transaction mechanisms within Africa are tiring.
Is the answer USSD USDC (or any other stablecoin)?
USSD USDC is the most underrated payments thesis in emerging markets. Can there be universal merchant acceptance via USSD?
USSD is available on telcos globally, with 3.5 billion phone users. USDC settles globally without FX friction. Nobody has built the bridge at production scale with telco distribution.
The architecture is simpler than it sounds.
The USSD Interface Option:
The user dials a short code. Navigates a menu. Enters a merchant code and amount. Confirms with a PIN. That is the entire UX. No app. No smartphone. No hardware beyond the phone already in their pocket.
The merchant just needs either a USDC wallet address linked to their phone number or a short, memorable merchant ID. They do not need any new hardware or software.
The bridge layer is where the value lives. A custodial USDC wallet tied to a USSD session, with a merchant alias registry that maps phone numbers to wallet addresses. Phone number as a universal wallet identifier.
The USSD Authentication Option:
The merchant simply enters the user's phone number, already mapped to their crypto wallet, and the user gets a USSD Push prompt to authenticate the transaction.
SIM registration already handles KYC in most markets. The number is the identity layer. Any wallet provider can use this.
The result is this: any user on any phone, including a feature phone, can pay any merchant in the world that accepts stablecoin. No FX friction. Near zero fees on Base. SMS confirmation so the merchant knows without internet.
Mobile money in Africa has proven that the USSD model works at scale. Circle proved stablecoin settlement works at scale. Nobody has connected them.
The US GENIUS Act is accelerating merchant USDC adoption in the developed world. The telco networks already exist on the African side. Some African countries are already issuing Virtual Asset Provider licenses. The infrastructure gap between those two realities is a business.
What is stopping this from being built? All the pieces are there. Who will make them fit together like LEGO?
The regulatory hurdles are gradually being removed. Someone with balls has to bell this cat.