The concept of money has evolved dramatically throughout human history. In the era of physical asset exchange, gold served as the primary medium for trading goods. As we transition into the digital age, a critical question emerges: will digital assets become the new "digital gold" for exchanges? This article explores the essence of digital currency, ownership concerns, and the geopolitical challenges facing sovereign digital currencies.
The Rise of Digital Currency
Digital currency and its issuance have become hot topics in global finance. The discussion intensified when Facebook announced its Libra cryptocurrency project in June 2019. While Bitcoin—created by the mysterious Satoshi Nakamoto—preceded Libra by a decade, Facebook's entry brought unprecedented mainstream attention to digital currencies.
Bitcoin's value skyrocketed over the years, reaching over $20,000 per unit in 2017. Even after coordinated regulatory actions by central banks worldwide, its value remains significant, with total Bitcoin valuation approaching hundreds of billions of dollars. This massive valuation demonstrates the substantial seigniorage benefits that attracted Facebook to the cryptocurrency space.
The Libra announcement triggered immediate regulatory responses. Within a month, both the U.S. Senate Banking Committee and House Financial Services Committee held hearings on the project. Shortly afterward, France and Germany jointly declared their opposition to Facebook's cryptocurrency plans.
Meanwhile, China's central bank expressed serious concerns about Libra. Former PBOC officials identified several potential problems: threat to monetary sovereignty of non-reserve currency countries, financial stability risks, reduced monetary policy effectiveness, and increased regulatory complexity.
The regulatory pressure worked. Several initial Libra partners, including PayPal, Visa, eBay, and Stripe, withdrew from the project. Governments worldwide made it clear they wouldn't allow uncontrolled private sector expansion into digital currency issuance.
Understanding Digital Currency Fundamentals
The emergence of digital currencies challenges traditional central banking systems and requires us to reconsider the nature of money itself.
The Historical Nature of Money
Classical economic theories provide valuable insights into money's fundamental nature. David Ricardo (1772-1823) viewed money as a special commodity created through labor. Meanwhile, William Stanley Jevons (1835-1882), building on Adam Smith's work, emphasized money's role as a medium of exchange that solves the "double coincidence of wants" problem.
These theories eventually converged in understanding money as a unit of value measurement that emerges from market equilibrium between production and consumption forces. As Karl Marx noted, gold naturally functions as money, but money doesn't have to be gold. This principle extends to digital forms like Bitcoin, though its long-term viability as a value unit remains uncertain.
Money Creation Mechanisms in Traditional Economies
Through Keynesian developments, economists William Baumol and James Tobin created the B-T Model in the 1950s. This model describes how economic agents balance holding cash versus financial assets based on opportunity costs. The resulting money demand function shows relationships between money, income, interest rates, and transaction costs.
Figure 1 illustrates the dynamic monetary process in mainstream economic general equilibrium theory: increased income raises money demand, while higher interest rates reduce it. Subsequent economists like Joseph Stiglitz identified modifications under information asymmetry conditions, but these basic relationships remain fundamentally sound.
The B-T Model essentially concluded classical discussions about money's nature, as later economists focused more on operational aspects than fundamental principles.
Digital Currency Generation Mechanisms
Satoshi Nakamoto's 2008 whitepaper revealed insights about money creation in primary markets and exchange in secondary markets. The Bitcoin system represents a cryptographic digital currency based on peer-to-peer principles.
Consider an economy with four participants: A, B, C, and D. When A transfers 10 Bitcoin to B, this transaction is recorded not just between them but broadcast to all participants. The transparency ensures everyone simultaneously sees and verifies the transaction.
These transactions are grouped into blocks (approximately 1MB each, storing about 4,000 records). When a block fills, it's cryptographically linked to the previous block, forming a blockchain.
This system addresses three critical challenges:
- Consensus mechanism: Establishing which transaction sequence is valid despite network delays
- Incentive structure: Motivating participants to maintain records
- Anti-counterfeiting: Ensuring transaction validity and prevention of double-spending
Nakamoto's solution involved two reward systems: transaction fees (similar to banking fees but much lower) and block rewards. Initially, miners received 50 Bitcoin for each block mined, with this reward halving approximately every four years. The mathematical limit ensures only 21 million Bitcoin will ever exist.
The consensus mechanism uses proof-of-work—participants solve complex mathematical problems (based on SHA256 hash functions) to earn the right to create blocks. This process, known as "mining," represents a primary market behavior seeking the most efficient "gold flow" in digital form.
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Global Risks and Challenges for Digital Currencies
Digital currency blockchain technology represents a strategically significant national technology with upgrade implications for entire economic systems.
Blockchain as a New Public Good
Digital blockchain represents a novel form of public good that should benefit all internet participants—both online and offline. Its characteristics include:
- An anonymous or identified central top-level account system design
- A stem-cell-like logical function at the genesis block that allows forward extension but not reverse growth
- A system where new specialized digital blocks connecting to the main chain preserve their data while maintaining copies of branch block contents through hash functions
- A validation qualification system that emerges when main chain data covers a threshold number of block networks
- A value system where blocks gain third-party functions for asset storage, preservation, and transfer when connected in a topological "open ball space" configuration
Blockchain design features open architecture with point-to-point centers, resembling the growth process of stem cells in organisms. This network growth exhibits self-integration and acceleration tendencies from main chains to spinal cord chains to targeting chains, eventually forming super-network "intelligent-wisdom" entities encompassing what might be analogous to vertebrae, organs, and brains.
The concept of "decentralization" inadequately describes blockchain's metaphysical nature. Instead, blockchain represents a highly intelligent pre-designed system that replaces many post-organization management problems—a non-human, non-machine super "life form" with self-wisdom growth characteristics.
Current blockchain technology resembles early single-cell organisms and trilobite-like spinal "organisms" in their blind but orderly self-generating process. However, once this process crosses the intelligence threshold—what we might call the "Fuxi-Nüwa" or "Adam-Eve" threshold—an internet warring states period could emerge with consequences far beyond simple system disruptions.
Blockchain's core contribution lies in its unidirectional growth, bidirectional transparency, and process immutability, which can correct behavioral uncertainties and reduce massive social transaction costs caused by human involvement. In these activities, blockchain technology proves safer, fairer, more transparent, and more popular than existing human-dominated economic systems.
Digital currency represents a public good collectively created and owned by all economic citizens who build and operate it.
National Risks and Global Prospects
Blockchain technology presents tremendous positive impacts on the financial industry through three fundamental features:
- A top-level design making block nodes share directory data through hash functions, with equivalent authorization between starting point directory data and node directory data
- A system where any valuable information receives asset qualification that subsequent blocks cannot alter
- A transaction system where blocks share information with counterparts through hash directory functions
This creates a分级 (multi-level) clearing and settlement system where value (capital) and systems (markets) are separated, eliminating systemic risk and leaving only behavioral moral risk (collusion) and technical moral risk (hacking). This represents a more objective and fair third-party "mechanical (self-) natural system" compared to existing human-designed systems.
In this context, humanity's 700-year accumulation of primary (liquidity mobilization-savings) and secondary (liquidity trading) money market systems may upgrade to version 2.0. The technical possibility of moving beyond traditional "central bank-commercial bank" operations already exists, with Bitcoin and Ethereum representing small market experiments of such central top-level account systems.
We estimate blockchain technology's replacement of traditional money markets might lag by an era, similar to how the New York Stock Exchange long maintained floor trader systems before adopting electronic trading. However, the cost of resisting transformation grows exponentially as trading volumes increase.
Governments must secure leadership and discourse power in digital currency blockchain construction to maintain monetary sovereignty.
Blockchain technology represents a national core strategy—or more accurately, a super-national human strategic technology—as internet scale approaches the boundaries of human economic scale. This technology iteration built upon existing internet infrastructure might enable humanity to surpass industrial information economy and ascend to a digital wisdom economy era.
Since blockchain operates outside traditional national public goods governance domains, its conflicts with existing public goods (including club goods and sub-public goods) represent clashes between old and new public goods rather than between public goods and market private goods.
With effective national management but inadequate global governance, if a hegemonic country achieves blockchain technology领先 by an entire generation—especially with quantitative gap differences—the consequences for global governance could be disastrous. Thus, responses at both policy and national strategic levels have become security issues on the new economic technology front.
Blockchain technology has already reached a point where technical and engineering developments surpass management boundaries. China should prepare accordingly, conducting strategic research beyond technical and engineering expertise on concepts like "decentralization" and "de-central-bankization." These studies should involve open participation across scientific, engineering, and management disciplines at appropriate levels.
Frequently Asked Questions
What is the fundamental difference between traditional money and digital currency?
Traditional money derives value from institutional trust and government backing, while digital currencies like Bitcoin derive value from cryptographic verification, decentralized consensus, and limited supply. Digital currencies operate on distributed networks rather than through central authorities.
How does blockchain technology improve transaction security?
Blockchain enhances security through cryptographic hashing, distributed consensus mechanisms, and immutability. Once recorded, transactions cannot be altered without network consensus, making fraud extremely difficult. The transparent nature of distributed ledgers allows all participants to verify transactions independently.
Why are governments concerned about private digital currencies?
Governments worry about private digital currencies potentially undermining monetary sovereignty, facilitating illegal activities, creating financial stability risks, and reducing effectiveness of monetary policy. Private currencies could also challenge national control over money supply and economic management.
What advantages might central bank digital currencies (CBDCs) have over private cryptocurrencies?
CBDCs would combine the benefits of digital currencies—efficiency, transparency, and programmability—with the stability and trust associated with traditional fiat currencies. They would maintain monetary sovereignty, ensure regulatory compliance, and provide legal tender status while modernizing payment systems.
How does "mining" create new digital currencies?
Mining involves solving complex mathematical problems to validate transactions and create new blocks. Successful miners receive newly created currency as reward, simultaneously introducing new coins into circulation while securing the network through proof-of-work mechanisms.
What is the long-term potential of blockchain technology beyond currency?
Blockchain's potential extends far beyond currency to include smart contracts, supply chain management, digital identity verification, voting systems, and decentralized autonomous organizations. The technology enables trustless interactions and verifiable record-keeping across numerous applications.