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What Is Bitcoin (BTC)?
Bitcoin is the world's most widely circulated cryptocurrency, invented in 2008 by the anonymous developer Satoshi Nakamoto. It became the first operational cryptocurrency in 2009.
Unlike traditional currencies like JPY or USD, Bitcoin lacks state-backed value assurance. It operates without central administrators (e.g., central banks), existing purely as an intangible digital asset secured by blockchain technology. Transactions are encrypted, making data alteration extremely difficult.
Key Features:
- Decentralized validation (Mining): Miners verify transactions and earn Bitcoin rewards.
- Fixed supply: Capped at 21 million BTC to preserve scarcity.
- Fast cross-border transfers: Typically faster and cheaper than bank transfers.
- Growing adoption: Accepted at physical stores globally, including Japan.
How Bitcoin Works
Bitcoin utilizes a P2P (Peer-to-Peer) network, where participants collectively maintain the blockchain without centralized servers. This ensures near-zero downtime.
Mining & Consensus:
- Proof-of-Work (PoW): Miners solve cryptographic puzzles every ~10 minutes to validate blocks and earn BTC.
- Transaction fees: Paid to prioritize faster confirmations amid high network demand.
Bitcoin (BTC) Basics
| Attribute | Detail |
|---|---|
| Creator | Satoshi Nakamoto (pseudonym) |
| Issuance Method | Decentralized mining rewards |
| Max Supply | 20,999,999.9769 BTC |
| Block Time | ~10 minutes |
👉 Explore real-time Bitcoin charts
Bitcoin's History & Milestones
- 2008: Nakamoto publishes the Bitcoin whitepaper.
- 2010: First commercial use (10,000 BTC for two pizzas).
- 2017: "Cryptocurrency boom" peaks; SegWit upgrade completes.
- 2021: Taproot upgrade; El Salvador adopts BTC as legal tender.
- 2022: Market downturn amid global monetary tightening.
Advantages of Bitcoin
✅ Borderless transactions: Send/receive globally without intermediaries.
✅ 24/7 availability: No banking hours or holidays.
✅ Store-of-value potential: Scarcity drives long-term price appreciation.
⚠️ Risks:
- No interest accrual.
- Self-custody security responsibilities.
- High volatility.
Bitcoin's Future Outlook
With a market cap exceeding ¥50 trillion (2022), Bitcoin attracts institutional investors and ETFs. Its role in portfolios continues evolving alongside regulatory advancements.
Frequently Asked Questions (FAQs)
How do I buy Bitcoin?
Register with a licensed exchange like SBI VC Trade, fund your account, and purchase BTC starting from 0.0001 BTC.
What are the fees?
SBI VC Trade offers zero fees for account opening, maintenance, and deposits. Transaction fees vary by platform.
Can I trade via mobile?
Yes! Use SBI's "VCTRADE Mobile" app for real-time trading.
Is Bitcoin convertible to JPY?
Yes—sell BTC on exchanges to withdraw JPY.
Trading Flexibility
- Spot trading: Available 24/7 (excl. maintenance).
- Minimum purchase: 0.000001 BTC on exchange platforms.
Quick Facts (2022 Data)
| Metric | Value |
|---|---|
| Market Cap (USD) | $254.5 billion |
| Market Cap (JPY) | ¥26.5 trillion |
| Consensus Algorithm | Proof-of-Work (PoW) |
| Smallest Unit | 1 Satoshi = 0.00000001 BTC |
Data sources: Blockchain.com, BTC.com