Cryptographic Assets (Virtual Currency): New Assets for the Digital Era

Bitcoin sparked the rise of cryptocurrencies, which now number in the tens of thousands. In recent years, these digital assets have reached record highs and captured global attention.

Yet, surprisingly few people truly grasp the underlying principles or mechanisms of cryptocurrencies.

Cryptocurrencies operate on value systems distinct from fiat currencies and enable 24/7 cross-border trading, fundamentally reshaping our understanding of finance.

This article demystifies cryptocurrencies, clearly explaining everything you need to know—from foundational concepts to the latest trends—so you can stay informed in the evolving financial landscape.

Cryptocurrency Fundamentals

What exactly is a cryptocurrency?

Many have heard of Bitcoin or Ethereum, but aren’t sure what these assets actually are.

This section explains the core attributes of cryptocurrencies and how they differ from traditional money and electronic payment systems—in straightforward terms.

Definition and Legal Classification of Cryptocurrencies

Cryptocurrencies are digital assets that can be exchanged over the internet, functioning much like digital money.

Under Japan’s Payment Services Act, crypto-assets are defined by three main criteria:

1. They can be used for payments, such as at retail stores, and exchanged for fiat currencies like yen or US dollars.
2. They are electronically recorded and transferrable via computers or smartphones.
3. They are fundamentally different from government-issued money or electronic money.

The term “crypto-asset” replaced “virtual currency” following regulatory revisions, although “virtual currency” remains common in everyday language and media.

Key Differences: Cryptocurrencies vs. Fiat Currency

The main distinctions between cryptocurrencies and conventional money (such as yen or dollars) are their issuers and how their value is maintained.

Because cryptocurrencies are not overseen by governments or banks, they are less directly affected by political or economic events—but this also means greater price swings.

As a result, they can be highly volatile and carry significant risk.

How Cryptocurrencies Differ from Electronic Money

Both cryptocurrencies and electronic money operate in digital form, but they function differently at a fundamental level.

Electronic money—like Suica, PASMO, or nanaco—is issued by companies and fully backed by fiat currency.

In contrast, cryptocurrency values are set by market supply and demand, and many holders see them as investment assets.

Core Technologies Behind Cryptocurrencies

What powers the cryptocurrency ecosystem?

At its core lies blockchain—a breakthrough technology.

While blockchain may sound complex, its foundational idea is straightforward.

This section explains the technology behind cryptocurrencies in plain English and minimizes technical jargon.

What Is Blockchain?

The majority of cryptocurrencies are built on blockchain technology.

A blockchain is a type of database where transaction records are grouped into “blocks” and connected like links in a chain.

Each block includes multiple transactions and references the previous block.

This design makes data tampering extremely difficult.

Changing one block would require rewriting all subsequent blocks—a practically impossible feat.

In short, blockchain is a mechanism for enhancing trust by enabling collective verification of records.

Distributed Ledger Technology

Traditional banking systems centrally manage transaction records.

Blockchain, on the other hand, uses distributed ledger technology—meaning all network participants have access to identical records.

Advantages include:

• System resilience, even if one node fails
• Difficulty for a single party to alter data unilaterally
• High transparency, as anyone can verify transaction records

The result: “By sharing records across many participants, the system becomes safer and more trustworthy.”

Security and Trust

Blockchain transactions are validated using “consensus algorithms.”

Bitcoin, for instance, uses Proof of Work (PoW).

This approach requires participants to solve complex mathematical problems to earn the right to create new blocks.

To compromise the network, an attacker would need to control more than half the total computing power—an impractical challenge.

These technologies allow for a secure and trustworthy system without central oversight.

In essence: “Widespread oversight deters fraud and abuse.”

Major Cryptocurrency Types

The crypto ecosystem includes a wide range of assets, with Bitcoin and Ethereum leading the pack.

While many have heard the names, few know the unique characteristics of each.

This section introduces the features and differences of leading cryptocurrencies in a way that’s accessible to newcomers.

Bitcoin (BTC)

Launched in 2009 by the pseudonymous Satoshi Nakamoto, Bitcoin was the world’s first cryptocurrency.

The whitepaper “Bitcoin: A Peer-to-Peer Electronic Cash System” proposed a system for direct, bank-free value transfer between individuals.

Key characteristics of Bitcoin:

• Maximum supply limited to 21 million coins, creating scarcity
• New blocks generated roughly every 10 minutes
• “Halving” events reduce new issuance by half about every four years
• Most recognized cryptocurrency, with the largest market cap

Often called “digital gold,” Bitcoin is widely used as a store of value.

Ethereum (ETH)

Ethereum, launched in 2015 by Vitalik Buterin, is both a cryptocurrency and a programmable platform.

Unlike Bitcoin, which focuses on payments, Ethereum introduced smart contracts—self-executing agreements triggered by predefined conditions.

This enables more complex transactions and powers decentralized applications (DApps).

Ethereum’s main features:

• Supports diverse application development via smart contracts
• Backbone for DeFi (decentralized finance) and NFT (digital ownership) projects
• No fixed supply limit; total issuance varies
• Second-largest market capitalization among cryptocurrencies

Other Prominent Cryptocurrencies (Altcoins)

Cryptocurrencies other than Bitcoin are known as “altcoins”—each with unique purposes and features.

• XRP: Developed by Ripple for fast, low-cost international payments, with transfers settling in seconds to minutes.
• Solana: High-speed, low-fee blockchain capable of processing tens of thousands of transactions per second.
• Cardano: “Third-generation” blockchain built on academic research, focusing on security and sustainability.
• Dogecoin: Created as an internet meme, Dogecoin gained traction due to celebrity support and viral popularity.

These altcoins add diversity and innovation to the broader crypto landscape.

Key Features and Benefits of Cryptocurrencies

How do cryptocurrencies stack up against traditional money? Here are their standout advantages.

This section ties crypto benefits to daily life and practical scenarios.

What’s hard or expensive with banks and cash can be quick and easy with crypto.

Borderless Transfers and Payments

One of crypto’s greatest strengths is seamless cross-border transfers.

Traditional international transfers involve multiple banks, high fees, and long settlement times.

In contrast, cryptocurrency transfers offer:

• Completion within minutes or hours, anywhere in the world
• Low fees thanks to fewer middlemen
• Accessibility for those without bank accounts

These features make cryptocurrencies ideal for international remittances and sending funds abroad.

Additionally, a growing number of merchants and online services now accept crypto payments.

24/7/365 Trading Access

Traditional assets like stocks and bonds trade only during exchange hours.

Cryptocurrencies, however, can be traded anytime—24 hours a day, 365 days a year, worldwide.

This enables:

• Flexible investing, free from time and location limits
• Real-time response to global market movements
• Trading that fits your personal or work schedule

Decentralized, No Central Authority

Traditional finance is governed by central banks and governments, with banks or payment processors as intermediaries.

Cryptocurrencies operate on decentralized networks, with no central administrator.

Benefits include:

• Lower risk of direct impact from government or institutional policy changes
• Reduced risk of censorship or asset freezes
• Greater system resilience and uptime

Lower Transaction Costs

Cryptocurrencies allow for direct peer-to-peer transactions, potentially reducing costs compared to traditional financial services.

Examples:

• Lower international remittance fees
• Reduced infrastructure costs for payment processing
• Lower costs for record-keeping and verification

However, during periods of network congestion, transaction fees can spike—especially for Bitcoin and Ethereum.

Risks and Considerations for Cryptocurrencies

While cryptocurrencies offer notable benefits, they also involve significant risks.

Be cautious of promises like “guaranteed profits.”

This section highlights what to consider and watch out for when investing in or using cryptocurrencies.

Knowing the risks is key to safer participation.

Volatility Risk

Cryptocurrency prices can swing dramatically, with sharp spikes and drops in short periods.

Key drivers include:

• Small market size, making large trades more impactful
• High sensitivity to regulatory and technical news
• Prevalence of speculation and strong market sentiment

Invest only what you can afford to lose, and prepare for sudden downturns.

Security Risks (Hacking, etc.)

Although blockchain technology is secure, exchanges and personal wallets can be hacked.

There have been high-profile exchange breaches resulting in major asset losses.

Main security threats include:

• Exchange hacks leading to asset theft
• Phishing scams stealing login credentials
• Malware targeting wallet private keys

Mitigation strategies include enabling two-factor authentication and using hardware wallets for large holdings.

Regulatory Uncertainty

Cryptocurrency regulations differ widely by country and often change rapidly. Some countries have imposed outright bans.

Examples:

• Bans on crypto mining
• Revisions to Japan’s Payment Services Act
• Tax regulation changes in various jurisdictions

Regulatory shifts can heavily influence crypto prices and usability.

Fraud and Scams

As crypto grows in popularity, so do fraud and scam attempts.

Investment scams via social media and dating apps are frequently reported.

Red flags include:

• Claims of “guaranteed profits” or “certain price increases”
• Ponzi schemes using new investors’ funds to pay old ones
• Solicitations for investment in non-existent cryptocurrencies
• Repeated demands for additional fees to withdraw funds

Steer clear of “guaranteed profit” schemes, and never engage with unregistered or suspicious operators.

Regulation and the Future of Cryptocurrencies

How do different countries regulate crypto, and what’s ahead for the industry?

This section covers domestic and global rules, as well as emerging applications for crypto technology.

The potential of blockchain now extends far beyond payments.

Japan’s Regulatory Framework

Japan is a global leader in crypto regulation.

The revised Payment Services Act introduced mandatory registration for crypto-asset exchange operators.

Later amendments shifted terminology from “virtual currency” to “crypto-asset” and strengthened rules for customer asset management.

Key Japanese regulations include:

• Mandatory registration with the Financial Services Agency or local bureaus
• Robust anti-money laundering (AML) and identity verification requirements
• Mandatory cold (offline) storage of customer assets
• Capital gains from crypto treated as miscellaneous income for tax purposes

Further regulatory reforms are under review, including proposals to position crypto-assets as a distinct asset class under the Financial Instruments and Exchange Act, separate from conventional securities.

International Regulatory Approaches

Global regulatory approaches vary widely:

• United States: Multiple agencies (SEC, CFTC) share oversight; crypto ETFs are gaining approval.
• European Union: MiCA (Markets in Crypto-Assets) will create a unified regulatory framework across EU states.
• China: Bans on all crypto trading and mining, while proactively developing a central bank digital currency (the “digital yuan”).
• El Salvador: Adopted Bitcoin as legal tender and launched the official digital wallet “Chivo.”

Each jurisdiction prioritizes different goals, from consumer protection and financial stability to fostering innovation.

Emerging Trends: Web3, DeFi, and More

Crypto technologies are rapidly evolving into the backbone of the new digital economy.

• Web3: Transition from centralized (Web2) to decentralized internet (Web3), empowering users with data ownership and access to decentralized services. See Web3 for details.
• DeFi (Decentralized Finance): Financial services—lending, trading, insurance—provided without traditional intermediaries, automated by smart contracts for transparency and universal access.
• NFTs: Non-fungible tokens that prove digital ownership of assets like art, music, and in-game items, unlocking new revenue streams for creators.
• DAOs: Decentralized autonomous organizations where governance and decision-making are conducted collectively via governance tokens.

These innovations have the potential to reshape industries and accelerate global digital transformation.

Conclusion

Cryptocurrencies are a fast-evolving asset class shaped by ongoing technological progress.

They present innovative features that could transform traditional finance, but they also entail significant risks.

Before investing in or using crypto, fully understand how these assets work and the associated risks—and always act with personal responsibility.

FAQ

What are cryptocurrencies and how do they differ from traditional currency?

Cryptocurrencies are digital assets secured and managed by blockchain technology. Unlike physical currencies, they exist solely as data. Their functions go beyond payments, enabling applications like smart contracts and decentralized finance.

How can I buy or trade cryptocurrencies such as Bitcoin or Ethereum?

Open an account at a crypto exchange and fund it via bank transfer or convenience store payment. You can purchase crypto instantly from your smartphone or computer. Trading fees apply based on transaction volume.

What are the safety and risks of cryptocurrencies (hacking, volatility, etc.)?

Crypto prices are highly volatile and there are risks such as transfer errors and regulatory changes. However, since the 2017 crypto asset law, market integrity and reliability have improved. Start small and do your research to mitigate risks.

What practical uses do cryptocurrencies have? Are they usable in daily life?

Cryptocurrencies can be used for payments at some merchants and online services. They enable fast, low-cost international transfers and serve as tools for asset management and investment. Integration into daily life is expected to increase.

What are the current regulations and legal status of cryptocurrencies?

In Japan, cryptocurrencies are regulated as payment instruments under the Payment Services Act. Beginning December 2024, the OECD’s CARF (Crypto-Asset Reporting Framework) will enhance international anti-tax evasion measures. In the EU, MiCA regulation will take effect on December 30, 2024, establishing a more global regulatory environment.

What is mining and can individuals participate?

Mining is the process of validating blockchain transactions and minting new cryptocurrencies. Individuals can participate with a PC and mining software, but profitability depends on mining difficulty and electricity costs.

Is cryptocurrency investing suitable for beginners? What should I know before starting?

Cryptocurrency investing can be suitable for beginners if you start with the basics, invest small amounts, use a trusted, FSA-registered exchange, focus on spot trading, and practice sound risk management. Watch out for scams and unreliable information.