§4 The Theory and Dream of Competing Currencies

The collusion of inflation and power puts on the table the question of who pays for monetary dilution; from that diagnosis Hayek advanced the idea of competing currencies.

Monetary monopoly was never inevitable, and doubts about it have never fallen silent. Across the history of economic thought, calls to open currency issuance and introduce competition have appeared in different guises: from nineteenth-century advocates of free banking, through the institutional economics of the Austrian school, to Hayek’s systematization of the idea as a policy proposal in the 1970s. When The Denationalization of Money appeared in 1976, it met almost no response; half a century later, the rise of blockchain technology brought it back into view as one of the principal coordinates for understanding contemporary monetary change. The idea of competing currencies has a theoretical logic, historical practice, and structural limits; it need not be read as a classic text to be refuted point by point, but as a series of unfinished questions.

Section 1. Hayek’s Core Questions and Epistemological Foundations

Throughout his scholarly career Hayek held a deep and systematic belief in the price mechanism: market prices are not merely signals for resource allocation, but a system for transmitting dispersed knowledge. No single actor—whether a government agency or a private firm—can command information complete enough to replace market prices; the function of competition is not only “efficiency” but also “discovery”—the discovery of previously unknown preferences, techniques, and combinations. This epistemological stance runs through his critique of planned economies (The Road to Serfdom, 1944) and his elaboration of spontaneous order (Law, Legislation and Liberty, 1973–1979), and finally extends into the monetary domain.

In The Denationalization of Money he noted an asymmetry: markets for goods and services rely on competition to discover quality and price, yet the monetary sphere has long been excluded from competition by sovereign monopoly. The monopolist lacks an external incentive to maintain the value of money—because the public has no substitute with which to “exit”—yet enjoys a continuing convenience in financing the fisc through monetary expansion. Hayek wrote: “Good money can come only from self-interest, not from benevolence”¹—competition forces issuers to trade currency stability for survival, just as product markets trade quality for customers. His proposal was to open the right of note issue, allow private institutions to issue named currencies on their own reputation, and let the public, through use, choose units of more stable purchasing power, so that competition would weed out inferior issuers and retain superior ones.

That question remains powerful: if issuance rules can be manipulated, why should holders not seek alternatives? If price competition works in goods markets, why should money markets be the exception? The theory of dispersed knowledge that Hayek developed in Individualism and Economic Order runs through this argument: “the function of competition is not only efficiency but discovery”—no single actor holds information complete enough to replace market prices². The logical chain of these two questions is intact—yet Hayek’s epistemological premises also include an important assumption: for competition to work effectively, several conditions must be met, including accessible information, acceptable switching costs, and credible constraint mechanisms. In the nineteenth and twentieth centuries, when metallic money and paper notes coexisted, the supply of these conditions was scarce, and the idea of competing currencies accordingly remained largely theoretical. The key is what infrastructure competition requires, not an abstract debate over whether competition is wanted.

Section 2. Historical Practice of Free Banking: Scotland’s Positive Case

The main historical empirical basis for free-banking doctrine comes from Scotland’s experience between 1716 and 1845. In that period, Scotland’s money and credit were supplied mainly by competing private banks; the Bank of England’s charter did not extend to Scotland; each bank issued notes backed by its own reputation and accepted one another’s paper under spontaneously formed multilateral clearing arrangements.

The record of this history is largely favorable. Economic historian Lawrence White, in Free Banking in Britain (first edition 1984), systematically surveyed the evidence: Scottish banks showed lower failure rates than their English contemporaries, broader financial coverage (including deposit services for urban and rural small savers), and more stable monetary quality. Scottish banks developed an “option clause” allowing a bank under liquidity pressure to postpone specie redemption for six months while paying 5 percent compensatory interest—a spontaneous liquidity-management device that did not depend on any government lender of last resort³. Selgin’s evolutionary model of competitive note issue, published the same year, embedded this mechanism in a dynamic path of “overissue—discount—clearinghouse reflux,” laying the framework for his 1988 monograph³.

White’s positive narrative is only one wing of a long historiographical debate, far from scholarly consensus. George Selgin, in The Theory of Free Banking (1988), derived monetary-supply discipline from a model of competitive issue: absent an artificially fixed parity, overissued notes would trade at a discount in the exchange market, and the public would spend discounted notes first and hold superior ones—aligned with Thiers’s law in Chapter 5, except that the mechanism shifts from national exchange rates to interbank clearing and discount rates⁴. In How Would the Invisible Hand Handle Money? (1994), Selgin and White argued further that clearinghouses, option clauses, and peer monitoring could endogenize stabilizing mechanisms so that competitive issue need not inevitably produce hyperinflation.

Critics do not deny that Scottish banks were relatively prudent; they question causal attribution. Charles Calomiris has pointed out that the Scottish system operated in the shadow of the British gold standard and the Bank of England as lender of last resort; in crisis years (such as 1825 and 1837) it often relied on London liquidity support. Strip away England’s institutional background, and the evidence that “pure competition” could be replicated is insufficient⁵. White responded directly in 1995: Scottish banks’ lower failure rates relative to English contemporaries cannot simply be attributed to an “English backstop,” but must be read as the joint product of clearing networks, option clauses, and community reputation constraints—yet even White conceded that counterfactual experiments fully stripped of the national gold-standard framework cannot be supplied by the sources⁵. Surveying the debate, Randall Kroszner acknowledged that the Scottish experience is instructive for understanding competitive issue, but that extrapolating it directly to contemporary emerging economies requires careful distinction among community scale, legal enforcement, and clearing infrastructure⁶. Warren Weber, in a Minneapolis Fed quarterly review, further summarized: the Scotland–United States contrast turns not on the labels “free / unfree,” but on three institutional variables—bond-collateral rules, branching rights, and note-authentication costs—narratives that can be read alongside Calomiris’s political-bargain explanation and Selgin’s endogenized-clearinghouse explanation rather than canceling one another⁷. Kevin Dowd showed from the modeling side that, within a competitive-issue framework, clearinghouse networks can endogenize “overissue—discount—reflux,” so that supply discipline need not depend on a single central bank—yet model conclusions likewise depend on whether clearing rules are enforceable and whether participants cannot escape discounted clearing⁸. Hugh Rockoff’s reexamination of the American free-banking era provides another mirror: failure rates under state “free banking” laws varied enormously and were not sheer chaos—institutional detail (especially reserve and bond-collateral rules) often mattered more for outcomes than “whether banking was free”⁹.

In a 1986 reappraisal of the legal-restrictions theory of money, Selgin offered a third reading: many “failures” of the American free-banking era were not necessarily deteriorations of competition itself, but layered legal restrictions—bans on interstate branching, compulsory state-bond collateral for notes, and the post-1865 holding tax on state banknotes—that successively blocked the discount clearing and Thiersian direction the market might otherwise have supplied¹⁰. This “legal restrictions theory” and the Calomiris–Haber political-bargain explanation are not mutually exclusive: the former asks which rules structurally distort relative prices; the latter asks who profits from the rules. Read together, they show that before opening competition one must clarify whether the restriction list can be removed, and whether after removal information costs remain high enough to require a clearinghouse or an on-chain state machine. When Hayek reviewed parallel-currency experience in Chapter 7 of The Denationalization of Money, he drew mainly on continental European cases; had he encountered Selgin’s historiographical reconstruction of the 1865 federal tax and the legal-restrictions framework, he might equally have stressed that whether competition can discover discipline depends on whether relative prices can adjust with the market—aligned with the Thiersian reading in Chapter 5 and the Hayek Gresham/Thiers boundary in Section 7 of Chapter 7.

In a 1991 Cato Journal essay, “The Case for Free Banking: Then and Now,” Selgin moved the historiographical debate from “whether Scotland succeeded” to a list of institutions transferable to the present: for competitive issue to discover discipline, it must simultaneously satisfy (1) notes circulating at market discount rather than forced parity; (2) branching and clearing networks sufficient to reflux overissue; and (3) a legal-restriction list that can be identified and removed—rather than an a priori claim that “private issue is necessarily chaotic”¹¹. In Competition and Currency (1989), White further brought another internal free-banking-school disagreement onto the table: some in the Austrian tradition (such as Rothbard) held that only 100 percent reserves count as “non-fraudulent issue,” whereas White and Selgin argued from Scottish sources that fractional reserves plus clearinghouse discipline were, in the nineteenth century, a workable and relatively prudent institutional combination—the dispute focusing not on “whether competition is wanted,” but on how reserve rules and clearing constraints are paired within a competitive framework¹¹. In dialogue with Hayek, this internal disagreement is worth retaining: Hayek wanted competition to discover discipline and did not lock in a single reserve ratio in The Denationalization of Money; Scotland’s option clauses and clearinghouse networks show that discipline can be embedded in interbank rules, not only in 100 percent metallic backing. In the on-chain era, MakerDAO-style overcollateralized CDPs and the dynamic-tier overcollateralization of VRC-10/PCIM (circulation thresholds triggering public votes, with an upper tier near 161.8%) functionally approach a modern variant of “verifiable reserves plus automatic redemption/liquidation”—whether superior to nineteenth-century paper clearinghouses must be tested by peg-deviation and run-recovery data, not decided a priori by historiographical allegiance.

In dialogue with Hayek, the foregoing debates should be read as different facets of the same question, not as taking sides on whether free banking is “good” or “bad.” Hayek wanted competition to discover discipline; Selgin and White show that discipline can be partly endogenized in banking networks; Calomiris and Rockoff remind us that discipline also depends on clearing arrangements, lender-of-last-resort expectations, and judicial enforceability—conditions that in 1976 could scarcely be replicated globally by private institutions. A more cautious reading is that the Scottish case shows under particular community conditions reputation competition can work, but it does not prove that reputation alone suffices in anonymous global markets; verifiable on-chain rules fill a gap in identification costs, without denying the critics’ empirical grounds in the historiographical debate.

That the Scottish case could operate was closely tied to several specific conditions. The Scottish banking community was relatively small; bankers were highly visible within commercial circles, and the consequences of reputational loss were direct and palpable; competitive clearing agreements among multiple banks formed spontaneously, reducing interbank frictions; and the legal system supplied reliable contract enforcement. That combination made reputation competition genuinely effective at a local scale.

Yet the Scottish case cannot simply be copied. It was an experiment within a geographically limited, economically tightly linked, culturally proximate community; information asymmetry between holders and issuers remained manageable because Scotland was not large and bank information was relatively transparent. Once the model is scaled to anonymous, globalized mass markets, the effectiveness of reputation mechanisms faces structural pressure.

Section 3. Adam Smith, Ricardo, and the Historical Genealogy of Competing-Currency Thought

Before Hayek, competitive ideas in the monetary domain were not without precedent. In The Wealth of Nations (1776), Adam Smith did not give unconditional support to monetary monopoly. He observed that the higher degree of competition in the Scottish banking system relative to England helped promote prudent management; he favored banks’ issuing paper under adequate reserves to raise capital efficiency, holding that competition led banks to curb excessive credit. Yet Smith also supported minimum-denomination limits on certain note issues, arguing that if very small notes were held largely by the poor, bank failure would impose unfair losses. That stance foreshadowed a lasting tension in competing-currency discussions: competition benefits large holders able to assess risk, while small depositors facing greater information asymmetry may suffer asymmetric losses.

On monetary questions Ricardo leaned more toward rule-based approaches. In The High Price of Bullion (1810), he argued that paper exceeding the quantity needed for gold circulation would depreciate, and favored constraining issue by a commodity standard to prevent banks’ excess money creation. His “quantity theory of the currency” became a foundation for the later Currency School and influenced the Peel Act of 1844—which separated the Bank of England’s Issue Department from its Banking Department and capped note issue by a forced reserve ratio. The nineteenth-century debate between the Currency School and the Banking School (which held that credit should respond flexibly to economic demand and not be bound by hard commodity reserves) was in substance an early clash between two philosophies of monetary management—“rule constraint” and “discretion.” That clash continues in different forms today—debates between Keynesian monetary policy and the Austrian school, between central-bank independence and fiscal dominance, between code rules and governance flexibility, are all modern variants of this older opposition.

Recognizing this historical genealogy helps avoid two extremes: one cannot simply assert the absolute superiority of on-chain rules because “rule constraint has historical precedent,” nor deny the value of rule constraint because “rules have historically been broken.” The real lesson of monetary intellectual history is that rule constraint and flexibility must be balanced within concrete institutional frameworks, and that different technical conditions shift the feasible boundary of that balance.

Section 4. The American Free Banking Era: Chaos and Learning

In sharp contrast to the Scottish case stands the American “Free Banking Era” of 1837–1863. After the federal government failed in 1836 to renew the Second Bank of the United States’ charter, states legislated banking for themselves; most allowed any institution meeting minimum capital requirements to obtain a bank charter and issue notes.

The result was a flood of notes, numerous but uneven in quality. By 1861, notes in circulation came from more than 1,500 different banks¹², with exchange rates floating by each bank’s reputation; discounts might range from 1–2 percent (reputable big-city banks) to 100 percent (banks already failed or unable to redeem)—Rockoff derived this order of magnitude from state circulation statistics and discount ranges compiled in the Bank Note Reporter⁹. Bank-note reporters arose so that merchants could judge the actual value of notes in hand—a market’s spontaneous response to information asymmetry, yet also evidence of how high competition’s transaction costs could be: in an age without real-time verifiable ledgers, “open competition” and “low-information-cost competition” were not the same thing.

Rockoff’s research on the period revises the popular narrative of “wildcats everywhere and total failure”: free-banking statutes differed sharply across states; some (such as New York and Ohio) used bond collateral and supervisory clauses to hold failure rates within acceptable ranges, while others permitted overissue⁹. The National Banking Acts of 1863–1865 imposed a 10 percent holding tax on state banknotes; drawing on issue statistics and discount series, Selgin argued that the tax effectively prohibited state notes from circulating at a discount and gave national banknotes a de facto legal parity—blocking the Thiersian direction so that, after the Civil War, private notes nearly vanished from circulation¹³. This institutional intervention is often overlooked, yet it shows that the endpoint of “open competition” can be legislative reconstruction of parity rather than natural market convergence; parity laws and federal tax suppression show that Gresham’s mechanism can be re-embedded in private systems by legislation.

This contrasts with the Scottish debate—whether competition “works” often depends on accompanying clearing and asset-constraint rules, not on abstract slogans. When Hayek discussed parallel-currency experience in Chapter 7 of The Denationalization of Money, he drew mainly on continental European and Latin American cases; had he encountered Rockoff’s empirics on interstate institutional variation and Selgin’s reconstruction of the 1865 suppression, he might equally have stressed that before opening competition one must answer “who executes clearing and constraint, and how is it verified”—the same set of institutional questions posed by verifiable rules.

So-called “wildcat banks” became the period’s most famous negative cases: banks located their headquarters in remote, hard-to-reach places to reduce actual redemption requests while circulating large volumes of notes in distant cities. When holders tried to redeem, they might find the headquarters “in wildcat country,” or find that the bank lacked sufficient reserves. Dwyer, drawing on state charter geography and Bank Note Reporter discount records, showed that the wildcat structure was essentially arbitrage on authentication and redemption costs—the surface result sometimes resembled Gresham-style retention of bad notes, yet the trigger was information cost rather than legal parity¹⁴. Under weak reputation constraints, such institutions extracted considerable short-run seigniorage, the cost borne by uninformed note holders.

The Panic of 1907 displayed the systemic fragility of a banking system lacking central-bank liquidity support: the federal Free Banking Era had ended in 1863, yet under the National Banking Acts there was still no central bank as lender of last resort; interbank runs spread rapidly and were finally calmed only by JP Morgan’s privately organized rescue. That episode directly propelled the creation of the Federal Reserve System in 1913—driven less by abstract monetary theory than by repeated demonstration that in the absence of a lender of last resort, private banking networks still face contagious runs. The historical roots of government intervention therefore include, alongside “desire for power,” institutional responses to real market failure; yet 1907 should not simply be attributed to the free-banking experiment of 1837–1863 itself.

Section 5. The Technical Conditions Competition Requires

Hayek’s scheme implied several critical technical premises that his era could not satisfy—key to understanding why the proposal was hard to implement at the time. The competitive path he envisioned was that countries would open monetary competition to one another and “impose upon existing monetary and financial agencies a very much needed discipline”—any issuer departing from honest money would see its currency rapidly displaced¹⁵—yet without real-time verifiable ledgers, that discipline was hard to land.

Identifiable and comparable issuance rules are the first condition. If holders cannot readily learn a currency’s issuance rules and reserve position, they cannot make meaningful comparative choices. Traditional banks disclose balance sheets quarterly or annually; the information is delayed and requires professional interpretation. Competing currencies need real-time accessible rule descriptions and state verification.

Low switching costs are equally indispensable. If moving from currency A to currency B requires lengthy account opening, approval procedures, and high fees, holders will inertially keep their current choice even when theoretically superior substitutes exist. Network effects are extremely strong in money; when switching costs are high, market response is slow even when gaps are clear.

Enforceable constraints and default penalties form the third. If an issuer advertises stability while actually expanding, holders must be able to verify and sell at low cost, and exit itself must send a strong enough punitive signal to discipline future issuance. In dispersed, information-asymmetric markets, this requires high-frequency price discovery and low liquidity frictions.

None of these three conditions could be met at low cost in the 1970s; Hayek’s vision was therefore more a thought experiment than a practical policy roadmap. In Chapter 22, “The Problem of Transition,” he conceded that abolishing legal tender overnight and fully opening competition was almost politically and contractually infeasible; the revised edition also admitted the scheme might be “too radical”¹⁶—the political feasibility of transition is a fundamental obstacle, not one solvable by technical detail alone. Transition is better understood as marginal substitution rather than overnight institutional switching, in keeping with that spirit.

Technical change has altered the supply possibility of these conditions: blockchain networks make issuance rules and ledger state, in principle, globally and in real time inspectable (identifiability); standardized interfaces (ERC-20, VRC-20, and the like) compress code-layer switching frictions (comparability); MakerDAO-style CDP automatic liquidation auctions and on-chain liquidity pools bring price discovery near continuous (punishability); VRC-10/11 risk paths are set out in the glossary. Most wages, taxes, and legal tender remain tied to sovereign money; deployable on-chain tokens are not the same as clearing licenses and compliant access (for on-chain real-payment metrics, see Chapter 1, Section 8¹⁷). Hayek’s vision of “bad money rapidly displaced” is more likely today to occur first in high-friction edge cases (cross-border remittance, high-inflation store of value, open-ecosystem internal pricing) than overnight rewriting of everyday settlement networks in advanced economies.

Section 6. Reputation, Rules, and Verifiable Constraints

The core mechanism of competing-currency theory is reputation competition: issuers discipline themselves to maintain market value; holders punish the untrustworthy by selling. The mechanism can work effectively in markets with adequate information, dispersed and highly mobile holders—substituting continuous market discipline for ex ante regulatory approval.

Yet reputation mechanisms have two structural weaknesses in the monetary domain. Information lag comes first: an issuer’s internal condition cannot be observed in real time, and manipulation can be completed before disclosure. The 2022 collapse of FTX is a clear case: the platform had a strong reputation; its founder was widely seen as a responsible industry builder; until days before failure, many analysts still gave positive ratings. Reputation could not prevent internal diversion of customer funds, because the diversion was invisible from outside. Reputation’s limit is that it is a lagged function of outcomes, not a leading indicator.

“Too big to fail” expectation distortion is the other. When an issuer grows large enough that failure would trigger systemic contagion, the punitive function of reputation is diluted by expectations of government bailout—holders expect government not to allow failure and therefore lower their self-protective vigilance. This is a classic form of moral hazard; in crypto it appears in a slightly different guise: government bailouts become “consortium rescues” and “protocol restarts,” which can likewise dilute market discipline.

In the on-chain era, rule constraints partly substitute for reputation constraints: supply caps, public collateral ratios $C_0$, Maker-style CDP automatic liquidation thresholds, and issuance schedules are written into code and cannot be unilaterally changed after deployment. This shifts the question “does the issuer keep faith?” from dependence on disclosure and reputational appraisal to dependence on code verifiability—anyone can read the contract code, confirm that rules match advertising, and see that rules cannot be modified without broad social consensus. Timberlake showed from nineteenth-century clearinghouse sources that the paper-era prototype of “verifiable discipline” was already the reflux of discounted notes onto overissuing banks by interbank clearing networks—full on-chain nodes continue the same logic structurally, only the medium shifts from clearinghouse books to a state machine¹⁴. Reputation and verifiable rules are complementary, not substitutes: code handles constraints that can be formalized; reputation handles flexibility and judgment beyond the code’s boundary.

Section 7. The European Monetary Union: A Counter-Experiment in Competition

In the revised edition of The Denationalization of Money, Chapter 1, “A Realistic Proposal,” Hayek proposed that a near-term operable first step would be for Common Market countries, by treaty, to remove barriers to currency flows and cross-border banking, allowing national currencies and banks to compete freely within each territory—preferable to the “utopian scheme” of issuing a common European currency¹⁸. History moved in the opposite direction: Europe chose a single currency. The Maastricht Treaty of 1992 set the course; the euro launched as a unit of account in 1999; euro notes and coins entered circulation in 2002; twelve founding members abandoned their own currencies. Competitive weeding-out did not occur; the euro came from political negotiation, aimed at eliminating exchange-rate frictions and lowering cross-border transaction costs, advancing European political integration through monetary union.

Euro-area experience supplies a complex reference for competing-currency theory. Monetary unification did lower transaction costs among members: Eurostat data show that in the euro area’s first decade, intra-area goods trade as a share of intra-EU trade rose from about 45 percent to a peak near 67 percent around 2007¹⁹—eliminating exchange-rate frictions brought a quantifiable trade-integration effect. Unified market scale also briefly brought the euro’s share of global foreign-exchange reserves near 30 percent in the 2000s, rivaling the dollar¹⁹. Yet by abandoning exchange-rate policy tools, members facing asymmetric shocks lacked independent adjustment means. In the sovereign-debt crisis of 2010–2015, Greece, Spain, and Portugal could not restore competitiveness through domestic-currency depreciation and had to rely on painful internal price and wage adjustment. Thomas Sargent, in his Nobel lecture, characterized the euro-area debt crisis as “the inevitable tension of incomplete fiscal-union design inside a monetary-union shell”—without adequate fiscal-transfer mechanisms, monetary unification under asymmetric shocks generates large distributional pressures.

From the standpoint of competing-currency theory, the euro-area experiment shows that eliminating monetary competition (substituting political unification for market competition) does not dissolve the core problem of seigniorage—incentive structures and constraint mechanisms do not vanish when names are unified; they reappear in new forms. Southern European countries within the euro area could not lighten debt burdens through currency depreciation; the result was sovereign-debt crisis. Had those countries retained independent currencies, similar pressures would have been released through depreciation plus inflation, the cost borne by money holders. Both paths have costs; the difference is who bears them and in what form. That is highly consistent with Hayek’s core claim—that monetary problems are essentially distributional questions of who bears the cost.

Section 8. Mises’s Monetary Theory and the History of Parallel Currencies

Ludwig von Mises was Hayek’s teacher and another major Austrian voice on monetary theory. His “regression theorem” sought to explain the origin of money’s value: money’s present purchasing power rests on people’s expectations of its historical purchasing power, which can be traced back to the point at which money, as a commodity, had use value²⁰. Some scholars have used the theorem to argue that Bitcoin cannot be money—without an original commodity use value, how can value have an initial anchor?

In “Synthetic Commodity Money” (2015), Selgin proposed a path that dialogues with rather than denies the regression theorem: Bitcoin can be seen as a “synthetic commodity”—scarcity, verifiability, and censorship resistance substitute for metal’s physical properties, so that it functionally takes on the constraining role commodity money once provided²¹. This sits closer to Menger’s logic of “saleability”: markets select attribute combinations that lower exchange frictions, not necessarily some predetermined “nonmonetary use value.” In practice, Bitcoin has sustained market capitalization and trading for more than fifteen years; the theorem’s relation to that fact is more a matter of historical origins and epistemology than functional negation—how a zero price on day one is anchored, and how continuous quotation on year fifteen is maintained, are two different layers. Had Mises seen this outcome, he might have distinguished “the regressive chain of explanation” from “saleability ranking under institutional competition,” rather than using an origin theorem to deny a continuing market fact—consistent with the Austrian school’s habitual pragmatism.

Of greater practical reference is Mises’s historical analysis of parallel currencies. He observed that historical coexistence of multiple monies was not naturally chaotic—so long as an expectable relative-price mechanism exists, multiple currencies can serve different scenes and functions without necessarily producing economic disorder²². The key is not “whether multiple currencies exist,” but divergence between officially fixed parities and genuine market valuations—that is the trigger for Gresham’s law, bad money driving out good. Under freely floating exchange rates, markets continually adjust relative prices among currencies, maintaining a dynamic balance that differs in kind from static pricing under monetary monopoly.

Section 9. Two Unresolved Problems of Competing Currencies

Hayek’s competing-currency scheme left two theoretical problems that remain incompletely answered and must still be faced.

Scale effects and new monopolies form the first tension. Competing-currency theory assumes market selection will preserve a plural pattern; yet network effects in money are extremely strong—money’s value derives partly from general acceptance, and acceptance rises with scale of use. Competition may therefore produce not a stable plural pattern but a winner-take-all new monopoly. Experience from internet platform economies suggests that competition’s result is not always plural coexistence; first-mover advantage plus network effects can quickly yield dominance. In money, the logic that “scale is value” continually strengthens the first currency to win broad adoption, while later entrants face extremely high network thresholds. If ultimately only one private money dominates, the discipline competition brought disappears, and the outcome may be no better than regulated central-bank money.

Deflationary bias and macro stability form the second tension. Issuers of competing currencies, to maintain purchasing-power stability, naturally avoid overexpansion—rational at the individual-incentive level. But if all issuers lean toward conservative supply policy, aggregate money supply lacks elasticity in economic contraction and may intensify deflationary pressure—the core of Keynes’s critique of the gold standard. Del Negro, Giannoni, and Schorfheide (2015), using a New Keynesian DSGE benchmark, showed systematic tension between model-implied low-inflation/deflation risk in several post-2008 periods and the central bank’s actual easing path—the macro-stabilizer function cannot be automatically aggregated from individual issuance discipline²³. When money contracts, the real value of debt burdens rises, potentially triggering a debt–deflation spiral and recession. Competing-currency theory has not supplied an adequate mechanism for this collective-action problem: individual issuers’ supply discipline is individually rational; the collective consequence may be macro-level demand shortfall.

These two unresolved problems have new room for discussion in the blockchain-protocol era, but they have not disappeared. Protocol design must face them, not bypass them.

Network effects are the primary path of rebuttal: money’s value derives partly from general acceptance; first-mover advantage may yield winner-take-all rather than plural steady states. The engineering aim of interoperability standards (IBC, cross-chain bridges, VRC/ERC fungible interfaces) is to lower migration frictions so that holders can “vote with their feet” when rules deteriorate—yet the 2022 Terra/UST collapse showed that migration costs can be extremely high when liquidity dries up; as of 2024, Bitcoin still accounts for roughly half of crypto market capitalization, and USDT/USDC are highly concentrated among stablecoins²⁴—on-chain data do not yet confirm a stable plural competitive pattern. Cross-chain adjusted settlement-volume growth and non-head protocols’ shares in vertical scenes (DeFi, gaming, supply chains) are observable positive indicators; head-protocol market-cap concentration, concentration at exchange and custody layers, and the fact that most retail still does not settle on-chain still conflict with the claim that “competition has dissolved monopoly.”

On deflationary bias, elastic supply mechanisms offer another design path: Ethereum’s EIP-1559 introduced base-fee burn, so that supply contracts at peak network use (burn exceeds issuance) and expands at troughs (issuance exceeds burn), achieving automatic adjustment based on on-chain activity²⁵—demonstrating a technical possibility of introducing elasticity within a rule-constrained framework, far from a proven macro scheme superior to central banks’ countercyclical tools; in a 2008-style deep recession, code rules as currently designed cannot actively play lender of last resort—a limit that must be understood alongside the welfare discussion of the 2 percent target under the New Keynesian framework in Chapter 3²⁶.

Section 10. From Banking Competition to Protocol Competition

The unit of competition is shifting from “notes issued by a bank, whose reputation attaches to institutional personality,” toward “tokens and rules under a public protocol, whose reputation attaches to verifiable code and on-chain state.” This shift touches a structural change in the basis of trust, far beyond mere terminological substitution—whether it has already occurred at the institutional level must be tested by observable indicators (fiat’s share in taxation and contracts; whether multi-rule monies obtain legal-tender or quasi-legal-tender status; adjusted on-chain payments as a share of global flows), not presupposed by a technology roadmap.

Historically, the trust chain of private bank money was: issuer reputation → dependence on disclosure and audit → dependence on auditors’ independence → dependence on legal enforcement → ultimately dependence on state authority. The trust chain of on-chain protocol tokens by engineering design is: code rules → independently verifiable by anyone → rule changes require holder-community consensus → violations are automatically enforced on-chain (rather than depending on judicial process). On-chain tokens still require trust—but the locus of trust is designed to shift from personality to rules, from lagged accountability to ex ante verifiability; events such as FTX and Terra/UST in 2022 show that verifiability covers only constraints already on-chain and formalized—opaque reserves, governance capture, and breaches of off-chain promises can still break the chain.

What the public chooses, therefore, in theory is not only “which institution has better reputation,” but expands to: whether collateral mechanisms are transparent; whether governance prevents capture by a minority; whether interoperability keeps switching costs acceptable; whether compliance boundaries are compatible with mainstream legal environments; whether issuance rules are clear and hard to modify unilaterally. Each dimension is an open competitive dimension, and each under ideal conditions can be verified and thus priced by the market—real-world frictions include oracle feeds, thin-pool manipulation, MEV, and whale governance distorting “equal verifiability,” so that “protocol competition” at this stage remains closer to a disciplinary supplement in edge cases than a full substitute for central-bank discretionary macro stabilization.

The door Hayek opened lacked a suitable technical track in his time. Globally synchronized ledgers and verifiable rules allow the competitive unit to move from named bank monies toward verifiable protocol rule suites—in Chapter 9 of The Denationalization of Money he distinguished competition among named bank currencies, whereas homogeneous tokens issued in parallel by many parties leave no one responsible for the aggregate supply²⁷. Under floating exchange rates and on-chain liquidity markets, good-versus-bad comparison must be reunderstood. The dream of competing currencies is not obsolete; its form of realization must shift from competition of personality and reputation to competition of rules and protocols.

This evolution is closer to an extension of Hayek’s thought than a negation. His most enduring contribution is a methodological stance: money should not be treated as a sacred public monopoly, but should, like other goods, submit to the test of competition; the dispersion of information requires decentralized mechanisms, not centralized discretion; good monetary institutions need embedded constraints, not reliance on issuers’ virtue. In the blockchain-protocol era, these three positions are closer to feasibility at the technical layer than in Hayek’s writing years—the institutional-layer transition remains long. When criticizing particular schemes, one must weigh valuable competitive logic separately from defective implementations; the empirical weight of on-chain experiments must still be placed on the same scale as free-banking historiography and the euro-area counterexample.