Crypto Assets (Virtual Currencies): New Asset Class in the Digital Age

Crypto Asset (Cryptocurrency) Fundamentals

What are crypto assets (cryptocurrencies)?

While many have heard of Bitcoin or Ethereum, it's common not to fully grasp what they actually are.

This guide explains the essential nature of cryptocurrency and clearly distinguishes it from everyday money and electronic payment systems.

Definition and Legal Status of Crypto Assets

Crypto assets (cryptocurrencies) are digital forms of money that can be exchanged online.

In Japan, the Payment Services Act defines crypto assets by three main characteristics:

1. They can be used for payments (such as at stores) and exchanged for legal tender (like yen or the US dollar).
2. They are recorded and transferred electronically using devices like computers or smartphones.
3. They are distinct from government-issued legal tender and electronic money.

These assets were previously called "virtual currencies," but since a legal revision in May 2020, the official name has changed to "crypto assets."

Nonetheless, "virtual currency" remains a common term in media and daily language.

Cryptocurrency vs. Fiat Currency

The main differences between cryptocurrencies and traditional money (yen, dollars, etc.) lie in who issues them and how their value is assured.

Because cryptocurrencies aren't managed by governments or banks, they're less vulnerable to political or economic shifts.

However, this also means they're subject to significant price volatility.

Cryptocurrency vs. Electronic Money

While both cryptocurrencies and electronic money are digital, they differ fundamentally.

Electronic money—such as Suica, PASMO, and nanaco—is issued by private companies and backed by fiat currency.

Conversely, cryptocurrency prices are set by supply and demand in the market, and are often held for investment.

Technology Behind Crypto Assets (Cryptocurrencies)

How do cryptocurrencies actually operate?

They rely on a unique technology known as blockchain.

This concept may sound complex, but the fundamentals are straightforward.

This section explains the underlying technology of cryptocurrencies in accessible terms, minimizing technical jargon.

What Is Blockchain?

Most cryptocurrencies are built on blockchain technology.

A blockchain is a type of database where transaction records are grouped into "blocks" and linked together in a chain.

Each block contains several transaction records, along with information from the previous block.

This design makes tampering with the data extremely difficult.

To alter any given block, one would need to modify all subsequent blocks simultaneously, which is virtually impossible in practice.

In essence, blockchain is a system that builds trust through shared verification of records.

How Distributed Ledgers Work

Traditional banks centrally manage transaction and balance records.

Blockchain, in contrast, uses a distributed ledger system—many computers on the network maintain identical records.

Benefits of this system include:

• The system continues to run even if one node fails
• No single party can unilaterally alter the data
• High transparency, since anyone can review transaction records

Sharing records across a large network creates a more secure and trustworthy system.

Security and Trust

Transaction verification on blockchains is achieved through consensus algorithms.

For example, Bitcoin uses Proof of Work (PoW).

In PoW, miners solve complex mathematical problems for the right to add new blocks.

To take over the system, a malicious actor would need to control more than half the network’s total computing power—an almost impossible feat.

This technology creates a reliable, decentralized system that requires no central authority.

In short: many participants monitor one another, preventing fraud.

Major Categories of Crypto Assets (Cryptocurrencies)

There are many cryptocurrencies, including Bitcoin and Ethereum.

Even if you recognize their names, you may not know what sets each apart.

This section introduces the key features and differences of prominent cryptocurrencies for newcomers.

Bitcoin (BTC)

Bitcoin, the first cryptocurrency, was proposed in 2008 by someone (or a group) under the alias Satoshi Nakamoto and launched in 2009.

The whitepaper "Bitcoin: A Peer-to-Peer Electronic Cash System" outlined a way for people to transfer money directly, without banks.

Bitcoin’s defining features:

• Supply is capped at 21 million, creating digital scarcity
• A new block is mined roughly every 10 minutes
• New issuance halves every four years ("halving")
• It is the best-known and largest cryptocurrency by market cap

Bitcoin is often called "digital gold" for its role as a value store.

Ethereum (ETH)

Ethereum was created in 2015 by developer Vitalik Buterin.

While Bitcoin is designed for simple value transfer, Ethereum introduced smart contracts—self-executing agreements triggered by preset conditions ("if A, then B").

This enables complex transactions and decentralized applications (DApps).

Ethereum’s defining features:

• Enables diverse application development via smart contracts
• Forms the basis for DeFi (decentralized finance) and NFTs
• No fixed supply cap; issuance varies
• Second-largest cryptocurrency by market capitalization

Other Leading Cryptocurrencies (Altcoins)

All cryptocurrencies except Bitcoin are known as "altcoins" and have unique features and purposes.

• XRP: Developed by Ripple for international payments—faster and cheaper than traditional bank remittances, with transactions settling in seconds to minutes.
• Solana: A blockchain focused on high speed and low fees, capable of processing tens of thousands of transactions per second.
• Cardano: A "third-generation" blockchain based on academic research, emphasizing security and sustainability.
• Dogecoin: Started as an internet meme, Dogecoin has gained value through celebrity support and viral popularity.

Each cryptocurrency brings unique capabilities and helps diversify the crypto ecosystem.

Key Features and Benefits of Crypto Assets (Cryptocurrencies)

What advantages do cryptocurrencies offer over traditional money?

This section explores the convenience and appeal of crypto in everyday scenarios.

Certain tasks that are difficult with banks or cash become easy with cryptocurrency.

Borderless Transfers and Payments

One of cryptocurrency’s key features is seamless cross-border transfers.

Traditional international remittances are costly and take days due to multiple banks being involved.

With cryptocurrency:

• Transfers complete in minutes to a few hours, anywhere in the world
• Lower fees thanks to fewer intermediaries
• Accessible even for the unbanked

These features make crypto popular for international remittances and family support across borders.

Some merchants and online platforms now accept crypto payments as well.

24/7/365 Market Access

Traditional assets like stocks or bonds can only be traded during exchange hours.

Cryptocurrencies are tradable 24/7 from anywhere in the world.

This allows for:

• Investing at any time, from any location
• Real-time reaction to global market movements
• Trading that fits your work and lifestyle

Decentralized, No Central Authority

Conventional financial systems rely on central banks, governments, and intermediary institutions.

Cryptocurrency operates on decentralized networks, with no central administrators.

Benefits include:

• Less direct impact from government or financial policy changes
• Lower risk of censorship or account freezes
• Reduced risk of total system outages

Lower Transaction Costs

By enabling direct transactions without intermediaries, cryptocurrencies can reduce costs compared to traditional financial services.

Examples:

• Reduced international remittance fees
• Lower infrastructure costs for payment processing
• Reduced costs for transaction recording and verification

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

Risks and Cautions with Crypto Assets (Cryptocurrencies)

Crypto assets offer benefits, but also carry important risks.

Be wary of any promise of guaranteed profits.

This section outlines essential cautions for crypto users and investors.

Understanding these risks is key to safe participation.

Price Volatility Risk

Crypto prices are extremely volatile, with steep increases and drops possible in short periods.

Key drivers:

• Relatively small market size, so large trades have outsize effects
• Heightened sensitivity to regulatory and technical news
• Speculative activity and strong market sentiment

Only invest what you can afford to lose and prepare for sudden downturns.

Security Risks (Hacking, etc.)

While the underlying technology is secure, exchanges and personal wallets can be hacked.

There have been major incidents involving large-scale asset theft from exchanges.

Main security threats:

• Exchange hacks and asset losses
• Phishing scams stealing login credentials
• Malware targeting wallet private keys

To stay safe, enable two-factor authentication and consider hardware wallets or offline storage for significant holdings.

Regulatory Changes

Crypto laws differ widely across countries and change frequently. Some have banned cryptocurrencies entirely.

Examples:

• China’s ban on cryptocurrency mining
• Japan’s 2020 Payment Services Act revision
• Tax changes in various countries

Regulatory shifts can significantly impact crypto prices and usability.

Scams and Fraudulent Solicitations

As crypto grows, so do scams and fraudulent offers.

Investment scams via social media or dating apps are increasingly common.

Red flags include:

• Exaggerated claims of "guaranteed profits" or "certain price increases"
• Ponzi schemes paying old investors with new investor funds
• Solicitations for non-existent cryptocurrencies
• Repeated demands for extra withdrawal fees

Be skeptical of "guaranteed profits" and avoid unregistered or suspicious operators.

Crypto Asset (Cryptocurrency) Regulation and Outlook

How are crypto assets treated around the world, and what are the future prospects?

This section outlines key regulatory frameworks in Japan and globally, as well as emerging opportunities for crypto technology.

Cryptocurrency innovation now extends beyond money into diverse fields.

Current Regulatory Status in Japan

Japan is a global leader in crypto regulation.

The Payment Services Act was revised in April 2017 to require registration of crypto asset exchange operators.

The 2020 amendment renamed "virtual currency" to "crypto asset" and tightened customer asset management rules.

Key Japanese regulations:

• Registration for crypto asset exchanges (Financial Services Agency/Local Finance Bureaus)
• Anti-money laundering (strict know-your-customer requirements)
• Mandatory cold (offline) wallet storage for customer assets
• Capital gains on crypto treated as miscellaneous income for tax purposes

Further legal reforms are under discussion, including proposals to incorporate crypto assets into the Financial Instruments and Exchange Act, while maintaining their status as a distinct asset class.

International Approaches

Crypto regulation varies significantly by country.

• United States: Multiple agencies (SEC, CFTC, etc.) oversee the sector; crypto ETFs are gaining approval.
• European Union (EU): MiCA (Markets in Crypto-Assets) provides a unified regulatory framework across the EU.
• China: All crypto trading and mining are banned; meanwhile, China is advancing its CBDC, the digital yuan.
• El Salvador: Bitcoin has been adopted as legal tender, with the official "Chivo" digital wallet introduced.

Countries prioritize regulation based on consumer protection, financial stability, and fostering innovation.

Web3 and New Developments Like DeFi

Crypto technology is rapidly evolving from payment and investment tools to foundational infrastructure for the digital economy.

• Web3: The shift from centralized (Web2) to decentralized internet, where users control their own data and access decentralized services.
• DeFi (Decentralized Finance): Financial services (lending, trading, insurance) provided without traditional institutions, automated by smart contracts for open, transparent, and accessible finance.
• NFTs (Non-Fungible Tokens): Technology certifying ownership of digital assets (art, music, in-game items) and creating new revenue streams for creators.
• DAOs (Decentralized Autonomous Organizations): Organizations without central leadership, governed through collective voting with tokens.

These technologies are poised to disrupt traditional industries and drive innovation across multiple sectors.

Conclusion

Cryptocurrencies, as a new asset class, are evolving constantly with technological progress.

Their innovative features could transform the traditional financial system, but they also involve significant risks.

Before investing in or using cryptocurrencies, understand their mechanisms and risks thoroughly, and always act with personal responsibility.

FAQ

What is a crypto asset (cryptocurrency), and how does it differ from traditional currency?

Crypto assets are electronic money powered by blockchain technology. Unlike traditional currency, they are decentralized and not controlled by central banks, offering greater transparency and flexibility.

What types of crypto assets exist? What distinguishes Bitcoin from altcoins?

Crypto assets are mainly categorized as Bitcoin (BTC) and altcoins. Bitcoin is the original and largest by market cap. Altcoins are all other crypto assets, such as Ethereum and Ripple, each offering unique features and uses.

How do crypto assets work? What is blockchain?

Crypto assets use blockchain technology—a distributed ledger maintained via P2P networks and consensus algorithms, with cryptographic hashes ensuring data integrity. Multiple participants share and verify transaction data, providing security and transparency.

How do I buy and store crypto assets?

To buy and store crypto assets, open an account with a registered exchange and complete identity verification. Fund your account, select your desired asset, and place your order. For security, use two-factor authentication and always test with a small transfer before sending the full amount.

What are the advantages and risks of investing in crypto assets?

Advantages include high return potential, portfolio diversification, and 24/7 trading. Risks involve sharp price volatility and regulatory uncertainty.

Are crypto assets secure? How can I protect my assets from scams or theft?

Crypto assets offer strong security, but hacking risks remain. The safest storage method is a cold wallet. Always enable two-factor authentication, keep private keys secure, and use reputable wallet providers.

What is the future outlook for crypto assets and regulation?

The outlook for crypto assets is strong, with ongoing market growth. Regulatory frameworks like MiCA and CARF are increasing transparency and trust, accelerating industry maturity.