2026年ビットコインの買い方 — ステップバイステップ

1 取引所を選ぶ

You need a cryptocurrency exchange — a platform where you can buy, sell, and hold Bitcoin. The two best options for beginners in 2026 are:

• Binance — lowest fees, largest exchange, most trading pairs. Use 紹介コード MGBABA for 20% off all fees
• OKX — great for P2P trading with local currency. Use invitation code BUYSTOCK for 20% off all fees

We recommend Binance for most beginners because of its lower fees and larger selection. If you need to buy crypto with local payment methods (bank transfer, mobile money), OKX's P2P marketplace may be a better fit.

2 アカウント作成

Sign up using one of the links below. The 紹介コード is pre-filled so you automatically get the 20% 手数料割引.

Enter your email, set a password, and verify your email address. Then complete identity verification (KYC) — upload a photo of your ID and take a selfie. This is required by law on all regulated exchanges.

3 入金する

You have three main options to fund your account:

• Bank transfer — cheapest option, usually free or under $1
• P2P trading — buy USDT directly from other users with local payment methods (zero exchange fee)
• Credit/debit card — fastest but most expensive (1.8% fee on Binance)

We recommend bank transfer or P2P for the lowest cost. Avoid card payments if possible — the 1.8% fee on a $1,000 purchase is $18 in unnecessary costs.

4 ビットコインを購入

Once your funds are deposited, navigate to the trading page. Search for BTC/USDT (if you deposited USDT) or BTC/USD. Place a market order to buy Bitcoin at the current price, or a limit order to set your own price.

With code MGBABA on Binance, your trading fee is just 0.08% (or 0.06% with BNB payment enabled). On a $500 purchase, that is $0.40 in fees — less than a cup of coffee.

5 ビットコインを安全に保管

For small amounts (under $1,000), keeping Bitcoin on the exchange is fine. For larger amounts, consider transferring to a hardware wallet like Ledger or Trezor for maximum security. Enable two-factor authentication (2FA) on your exchange account regardless of the amount.