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The Stablecoin Sandwich: How Digital Dollars Slashed Cross-Border Payment Costs by 85%
Why JPMorgan, Visa and Mastercard are rebuilding on stablecoin rails (and how to prepare)

Stablecoins just hit $20 trillion in annual transaction volume. That’s more than Visa, Mastercard, and American Express combined.
While crypto headlines obsess over Bitcoin's price swings, a financial revolution is happening in plain sight. Global institutions have quietly built a parallel payment system processing $8.5 trillion in Q2 alone—double Visa's volume in the same period.
The "Stablecoin Sandwich" model has slashed cross-border payment costs by 85%, reduced settlement times from days to seconds, and eliminated correspondent banking fees that have inflated international transfers for decades.
JPMorgan now processes billions monthly on their blockchain platform.
Visa settled $3 billion through USDC.
This is the new financial plumbing being implemented by the world's largest institutions.
From emerging markets to institutional treasuries, the stablecoin infrastructure revolution is transforming how money moves, creating massive opportunities for those who understand how to navigate this new landscape.
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A few things I’ve loved reading this week—
The Stablecoin Infrastructure Revolution
While crypto headlines focus on market volatility, stablecoins have quietly transformed from speculative tools to serious financial infrastructure. Just look at the numbers—
$8.5 trillion in transaction volume across 1.1 billion transactions (Q2 2024)
More than doubled Visa's $3.9 trillion in the same period
Total market capitalization reached approximately $178 billion (Oct 2024)
Monthly transaction volume hit $1 trillion in November 2024 alone
Stablecoin market cap growth up 300% year-over-year
Transaction volumes doubled from $10 trillion to $20 trillion in just twelve months
Stablecoins are proving that digital dollars can work at scale. USDC alone has accumulated $39 billion in circulation across 16 blockchain networks, with direct integration into more than 500 million wallet products.
The technical evolution has been remarkable:
Layer 2 scaling solutions increased transaction capacity 50x in 4 years
Transaction costs reduced up to 99% on some networks
Post-Dencun upgrade brought significant fee reduction for Layer 2 networks
Settlement times reduced from days to seconds
Cross-chain bridges enhanced interoperability
Real-world impact is even more telling:
Cross-border settlement costs dropped from $30 to $2 per transaction
Settlement time reduced from days to seconds
Liquidity requirements decreased by 70%
Over $850 billion moved from traditional finance into decentralized systems
The "Stablecoin Sandwich" Model Transforming Cross-Border Payments
One of the most impactful innovations is the "Stablecoin Sandwich" model for international transfers. Traditional cross-border payments require multiple intermediary banks, with 3-5 day delays and fees of $25-35 per transaction.
The Stablecoin Sandwich works differently:
Initial fiat-to-stablecoin conversion in source country
Cross-border blockchain transfer (settlement in seconds)
Final stablecoin-to-fiat conversion in destination country
For example, a $100 USD to JPY transfer would follow this process:
USD moved to a payment provider's US account
Converted to USDT or USDC
Transferred to a Japanese wallet
Converted to JPY
Final settlement to recipient
This model eliminates correspondent banking fees, reduces settlement time from days to seconds, and lowers total costs by up to 85%. Traditional remittance costs average 6.5% per transaction, while stablecoin transfers cost under 1%.
Market Players Driving the Infrastructure Revolution
Stablecoin Issuers Leading the Charge
Stablecoin issuers function like modern digital banks—taking dollar deposits and issuing tokens in return, with each token backed by one dollar in regulated bank accounts.
Circle (USDC)
$39 billion circulates across 16 blockchain networks
78% year-over-year circulation growth
241% transfer volume increase in 2024
61% market cap growth in 2024
$20 trillion total transaction volume
Tether (USDT)
Market leader with over 75% market share
$80+ billion in US treasury holdings
Significant presence on TRON blockchain
Highest trading volume, maintaining a 24-hour volume of $51.14 billion
New Entrants
PayPal launched PYUSD, now integrated across their platform
Mountain Protocol launched USDM
Paxos supports multiple stablecoins including USDL and PYUSD
Non-USD stablecoins growing with EUR, SGD, and YEN options
Banking Integration Accelerates
Traditional financial institutions are integrating stablecoin infrastructure at an accelerating pace:
Processes billions monthly through JPM Coin
Developed Onyx platform for blockchain settlement
Transactions reduce settlement times by over 90%
Visa
Processes $3 billion in stablecoin payments
Collaborated with Circle to use USDC for settlement
Launched Tokenized Asset Platform (VTAP) in October 2024
Mastercard
Aims to reduce cross-border fees by up to 50% through blockchain settlements
Partnership with MetaMask for self-custody debit card
Collaboration with JP Morgan on blockchain-based B2B payments
The Regional Impact is Significant but Varies
Stablecoin adoption varies dramatically across global markets, creating a mosaic of adoption patterns tied to local economic conditions.
In Turkey, stablecoins have achieved remarkable penetration, accounting for 3.7% of GDP in purchases and generating $63.1B in cross-border payment volume during 2024, with strong adoption persisting despite relatively looser foreign exchange controls compared to other high-adoption markets.
Argentina presents perhaps the most compelling case for stablecoin utility, where the peso has lost over 90% of its value against the USD since 2019. Despite attempted economic reforms, Argentinians continue to pay significant premiums for stablecoin access following the December 2023 peso devaluation of 50%, with current inflation rates exceeding a staggering 250% annually.
Brazil shows a different adoption pattern, with $12B in cross-border stablecoin payment outflows in 2024, representing approximately 0.20% of GDP. The Brazilian market features a balanced growth trajectory with simultaneous expansion in both institutional adoption and retail user engagement.
In Nigeria, the TRON blockchain has become the dominant network for stablecoin activity, hosting the highest USDT volumes in the country. Nigerian adoption has been driven by multiple currency devaluations, strict forex restrictions, and the widespread penetration of mobile wallet technology.
Across all emerging markets, stablecoins command an average premium of 4.7%, with peaks reaching as high as a 30% premium in Argentina during periods of extreme economic stress. The total value of these premium payments reached approximately $4.7B in 2024, with projections indicating growth to $25.4B by 2027 as adoption continues to accelerate in countries with unstable currencies.
The Technical Implementation Challenge
Implementing stablecoin infrastructure requires navigating several technical approaches.
Direct API integration provides real-time transaction processing with webhook notifications, error handling, and security measures.
SDK implementation offers pre-built libraries, code samples, and testing environments for faster deployment.
Wallet infrastructure requires multi-party computation, key management systems, and scalability solutions.
Organizations must select the integration method that best aligns with their technical capabilities and business requirements.
Real-World Business Impact
Stablecoin infrastructure delivers substantial business benefits.
Cost savings include 85-99% reduction in transaction fees, near-instant settlement, reduced operational overhead, lower compliance costs, and eliminated correspondent banking fees. Efficiency gains enable 24/7 operation without banking holidays, real-time processing, automated compliance, reduced manual intervention, and improved transparency. Strategic advantages include expanded global market access, enhanced treasury management, improved customer experiences, and competitive differentiation.
The infrastructure battle is already won—the question is how quickly businesses will adapt.
How Can I Help?
At Catalyst, we help fintech companies articulate these complex transformations in ways that drive real business results. Through our work with infrastructure providers, we've found that success comes from demonstrating deep understanding of the problems you're solving and the ecosystem you're building for.
Want to dive deeper into infrastructure content strategy? Hit reply—I'm always ready to discuss where fintech is really heading.
Will