From SWIFT to Stablecoins: The New Operating System for the World’s Economy

On this episode of The Ledger Podcast, Ledger’s EVP of Consumer Services Jean-François Rochet sits down with Shah Ramezani, CEO and founder of Noah, and a new partner inside the Ledger Wallet ecosystem, to get into one of the more consequential shifts happening in crypto right now: traditional finance and self-custody are starting to converge. 

They discuss how stablecoins went from a niche crypto trade to real payments infrastructure, why regulatory clarity finally unlocked mass adoption, and how the Noah integration inside Ledger Wallet turns a self-custody wallet into something closer to a full financial account.

“The future of stablecoin is to create this kind of directly interconnected infrastructure for value transfer, for payments around the world.” – Shah Ramezani

Watch the full episode here:

Key Highlights:

From Speculation to Real-World Utility: The Stablecoin Inflection Point

Shah Ramezani founded Noah roughly four and a half years ago on one conviction: crypto’s killer app wouldn’t be speculation, it would be payments. In the early days, most of crypto’s activity looked closer to gambling than genuine utility; revenue driven by people “hoping something goes up.”

But one number kept climbing even through the downturn that followed the FTX collapse: the total value held in stablecoins. Digging into why, Noah’s team found users weren’t holding stablecoins for crypto exposure: they were using them to move money. That observation became the company’s founding thesis.

Shah notes that the internet started with “a lot of weird use cases” before the technology worked its way into everyday life in sequence. Stablecoin payments, he argues, are that first sequence for crypto.

Regulatory Clarity: The Unlock That Changed Everything

For years, the real obstacle to stablecoin payments wasn’t technical; it was political. Crypto was always more traceable than a traditional bank transfer, since every onchain transaction carries a record back to the moment it was minted. Regulators were just slow to see it that way.

The arrival of the MiCA framework in Europe, followed by a shift in US regulatory sentiment toward stablecoins, gave payment institutions the clarity they’d been missing. Before that, smaller payment providers were “taking a massive risk” working with stablecoin rails without clear guidance.

That’s changed over the last two years, opening space for Noah to build compliance infrastructure that combines fiat and crypto monitoring through KYC, sanctions screening, and behavioral analytics into one engineering-first stack. 

“Banks have tested this,” Shah notes. “It has always worked.”

Ledger Wallet as Your Bank Account: The Cash-to-Stablecoin Account

“Ledger is kind of your bank account. But what was missing for that bank account to become full circle was to be able to instruct payments.” – Shah Ramezani

The practical outcome of the Noah and Ledger partnership is the Cash-to-Stablecoin account, a feature inside Ledger Wallet that issues a real EUR or USD bank account number. Any fiat deposited into that account converts automatically into stablecoin and lands directly in the user’s self-custody wallet.

The flow runs both ways: users can receive payroll, third-party payments, or personal transfers in fiat, and send value back out to the traditional banking system whenever they need to. That’s a meaningful step beyond what centralized exchanges typically offer, where deposits and withdrawals are usually restricted to the account holder alone. Noah’s model is built for the payment use case, including paying and getting paid by anyone in the financial ecosystem and not just yourself.

In Europe, where SEPA settles near-instantly, a round trip from a fiat bank transfer to onchain stablecoin can complete in as little as 20 seconds.

Clear Signing and the Trusted Display: Why the Hardware Still Matters

The principle underneath the whole integration is simple: in today’s threat landscape, trusting what you see on a phone or computer screen just isn’t good enough anymore. Malware, compromised protocols, and spoofed interfaces have made a general-purpose device’s screen an unreliable source of truth.

That’s exactly why Ledger’s hardware signers, including the recently launched Ledger NanoTM Gen5, serve as the trusted display in the stack. The Secure Screen, driven directly by the Secure Element, shows the genuine details of any transaction before you sign it.

Consider the stakes with a scenario Shah raises: imagine a message from a friend stranded abroad who urgently needs money. With a Ledger signer in hand, you can verify the destination address through Clear Signing before authorizing a SEPA-to-stablecoin transfer that lands in seconds, on a Sunday, across borders, faster than any traditional wire could move. The hardware isn’t just storing a key; it’s the verification layer that makes a trustless payment actually trustworthy.

Stablecoins as the Operating System for Global Value Transfer

The broadest framing treats stablecoin infrastructure less like a crypto product and more like a new global settlement layer:  the comparison Shah reaches for is Voice over IP replacing the old international telephone network. Legacy cross-border payments route through a chain of correspondent banks, each one taking a fee and adding delay. Stablecoins, connected to local instant payment rails like SEPA in Europe, Pix in Brazil, or FedNow in the US, collapse that chain into a single borderless transfer.

“The stablecoin is basically the Voice over IP,” Shah says. “It can go anywhere.”

This logic, he predicts, will spread past consumer payments: organizations adopting stablecoin-based internal accounting to eliminate the reconciliation delays baked into traditional banking. As tokenized stocks, real-world assets, and money market funds move onchain, people in emerging markets gain access to the same quality of assets historically limited to investors in the US or Western Europe. That’s Noah’s actual mission, making sure that on-ramp is open to everyone: “Crypto, for the first time, is leveling the playing field.”

Key Predictions

Shah Ramezani

• Fintech and crypto will fully converge. The distinction between a crypto company and a fintech company will disappear, much like the distinction between a “software company” and any other company has already faded.
• Stablecoin-based accounting will go institutional. Organizations will move internal treasury and inter-entity accounting onto stablecoin rails to cut reconciliation friction and cross-border delays.
• RWAs will democratize access to premium assets. Tokenized stocks, money market funds, and other real-world assets will become accessible onchain to users globally, opening up investment options once reserved for wealthier markets.
• Neobanks built on stablecoin infrastructure will outpace incumbents in emerging markets. In regions without entrenched banking infrastructure, crypto-native financial apps are already growing faster than anything seen before, leapfrogging traditional financial systems entirely.

Reading List

Learn more about these topics mentioned in the episode, or explore our library of articles on Ledger Academy:

• Stablecoins
• Cash-to-Stablecoin within Ledger via Noah
• Self-Custody
• Ledger NanoTM Gen5
• Tokenized stocks
• MiCA Legislation