Who Gets to Control the Ledger

Everyone Sees 'Zero Fees'

When talk of Korean won stablecoins comes up, the opening scene is always the same. International remittances that took days now take seconds, bank fees disappear, and merchant fees that small business owners paid to card companies approach zero. Fintech presentation materials almost without exception start with the phrase 'cost reduction.' Fast, cheap, running 24/7. Looking only this far, there's no reason to oppose the technology.

But the word efficiency is always half a sentence. When costs decrease, those costs haven't disappeared—they've just moved from one ledger to another. When card fees hit zero, that 1.5 percent doesn't evaporate; it transforms into something else that the transaction generates and gets recovered. If we don't ask what that 'something else' is that the side laying the payment infrastructure recovers, we'll never see what's really at stake in the stablecoin competition.

The stakes aren't payment itself. They're the gateway through which payments pass, and the record of every footprint that passed through that gateway. Who sent how much to whom, when, and where. The sum of this data is a society's transaction ledger, and the stablecoin war is an infrastructure battle over who operates and who reads this ledger. Lower remittance fees are closer to bait that issuers put out first to get their hands on that ledger.

Where Does the Bill for Free Payments Go

Examining the business structure of stablecoin issuers reveals their motivation clearly. Issuers receive Korean won deposited by users, mint coins for them, and put that won into government bonds or short-term deposits to capture interest. Tether becoming a major holder of U.S. short-term Treasury bonds and Circle turning profitable through interest income—that's precisely this issuance profit structure, or seigniorage (the profit gained by currency issuers). They don't need to charge users transaction fees. The issued balance itself is interest-free capital, and that capital generates interest as it circulates. So 'zero fees' isn't charity but a pricing strategy to gather larger balances.

Here's a point worth pausing on. Issuance profit alone doesn't fully explain this picture. What those laying payment networks really target isn't balance but flow. Balance is a number measured once, but flow is living data continuously updated. Those who know in real time which commercial districts are thriving or dying, what age groups spend money on what, whether a particular store's sales increased or decreased from yesterday—they privately possess functions equivalent to a credit rating agency, an advertising platform, and part of a financial regulator.

So the bill for free payments gets distributed across society as a whole, not to users. On one side, issuers take seigniorage; on the other, the invisible asset of exclusive access to transaction data accumulates in the issuer's books. Users save on fees but in exchange let a private company read their entire transaction history. It looks like an equal exchange but it's asymmetric. What I saved is one remittance fee; what I gave up is a lifetime of transaction patterns.

Let's address counterarguments honestly. Someone will say: card companies already see all our transactions, banks do too—isn't singling out stablecoins overinterpretation? Fair point. The difference isn't in degree but in structure. Card networks operate within the regulatory cage of the Specialized Credit Finance Business Act and Credit Information Act, with data usage scope legally bound. Stablecoins are laying payment networks in an empty lot where that cage hasn't yet been built. Even with the same data, who holds it under what rules determines the magnitude of power. The problem isn't data collection itself, but preemption in a ruleless state.

Whoever Controls the Gateway Sets the Toll

Rewriting this game in the language of power, it becomes this: payment is a bottleneck through which all economic activity must pass. And whoever controls the bottleneck holds the right to levy tolls—more precisely, the right to permit or deny passage itself. What stablecoin issuers target is this veto power.

Imagine a Korean won stablecoin becomes the domestic payment standard. That issuer can freeze specific wallets, exclude specific merchants from the payment network, and reverse specific transactions after the fact. Tether and Circle actually freezing hundreds of millions of dollars worth of wallets at the request of the U.S. Justice Department or sanctions authorities—that's physical evidence of this power. Blockchain promised decentralization, but as long as issuers hold the switches for minting and burning at the center, it's centralized power riding on top of a distributed ledger. Behind the promise of toll exemption hides the greater power to cut off passage.

Second and third effects follow. Once one issuer's coin becomes the payment standard, wage payments, settlements, loans, and subsidy distributions layer on top in sequence. Whoever dominates the payment layer controls the input values for all financial services built above it. They essentially determine on which data the next 100 financial products will be built. Then competitors, unable to access the same data, remain perpetually locked as followers. A game that started with efficiency escalates at some point to a veto game, then to a data blockade game.

We must distinguish whether this is an act of creating something or collecting rent from flows others created. Inventing cheaper remittances counts as creating something. But privatizing access rights and veto power over the transaction ledger isn't creation—it's standing at a gateway and collecting. The question Korean society must ask isn't 'how much cheaper' but 'what does this issuer ultimately intend to collect.'

Three Candidates, Same Gateway

Three types of candidates now compete for this transaction ledger. First are private issuers—whether bank consortiums or fintechs, they run on seigniorage and data. Second is the CBDC the Bank of Korea is reviewing—central bank digital currency. Third are big tech companies and major platforms that already control payment user bases.

These three superficially fly different flags, but they target one gateway. The difference is whose rules govern after controlling that gateway. If private issuers hold it, data converts to shareholder value and veto power becomes business policy. If CBDC holds it, efficiency rises but a structure forms where the state views all citizens' transactions through a single window. China's digital yuan experiment showed precisely these two sides. Counterfeiting and tax evasion decrease, but transaction anonymity effectively disappears and a path opens for the state to attach conditions to individual spending. If big tech holds it, payment data flows into advertising and credit businesses, completing a walled garden where super-apps like Kakao or Naver manage a person's entire financial life on one screen.

None of the three candidates is inherently good or evil. Their respective incentives simply make them act that way. Issuers are designed to grow balances and data, central banks to prioritize control and stability, platforms to lock users into their gardens. Even setting aside morality, this argument holds. It's not about who's greedier, but which incentive structure steers citizens' transaction ledgers in what direction.

Where Does Korea Stand

Let's fix Korea's position on the world map. The U.S. proceeded with legislation effectively endorsing the issuer-led model. The calculation underlying this is that dollar stablecoins are the digital extension of dollar hegemony. Europe with MiCA (Markets in Crypto-Assets) built the cage first, tightly binding issuers with reserve and supervisory requirements. China blocked private coins and went straight to state CBDC. Korea stands at coordinates not yet arrived at any of these three—where rules remain empty. On the adoption curve, this is the most decisive interval, right before the early majority climbs aboard, right before standards are set.

This empty lot is both risk and opportunity. The risk is that if the fastest operator lays de facto standards while rules are absent, regulations created later merely ratify already-laid infrastructure. The U.S. legislatively endorsing the issuer model followed that path. The opportunity is that we can still build our own cage.

Viewing this issue from Busan brings the coordinates into sharper focus. Busan, designated as a blockchain regulatory-free special zone, has been cited as a stage for digital asset experimentation. Special zones are spaces to loosen rules, not eliminate them. If the zone permits payment network preemption without asking issuers about data usage and freezing authority, that becomes offering the region as an experimental platform and donating transaction ledger ownership to private companies. Conversely, if the zone first designs conditions—public access to transaction data, judicial control over freezing authority, social return of seigniorage—and then permits experimentation, Busan becomes the city that created the prototype of rules Korea should follow.

If there's a reporter covering this beat tomorrow, instead of announced remittance speeds and fee numbers, they should ask these three things: How far does this issuer read our transaction data and to whom do they sell it? Through what procedures do they freeze wallets and is there judicial check on that decision? Into whose pocket does seigniorage go and how much of it returns publicly? Payment innovation that can't answer these three questions isn't innovation but power transfer.

This isn't about stopping technology. Fast, cheap payments are clearly good things. But we must decide, before infrastructure hardens, under whose rules the most sensitive infrastructure of a society—the transaction ledger—will operate. Someone will control the gateway anyway. The question is whether the gateway's rules will be written by issuer terms of service or citizens' laws.