01 自分が管理するウォレットを取得する
Feather Wallet on desktop or Cake Wallet on mobile are the usual recommendations. Both are open source and neither requires an account. Write the seed phrase down on paper; there is no recovery process.
02 取引所アカウントなしでMoneroを取得する
Atomic swaps exchange BTC for XMR directly between wallets, with cryptography guaranteeing that both sides complete or neither does. Haveno is a decentralised exchange for the same purpose. Peer-to-peer markets are the third route.
Buying on a centralised exchange and withdrawing to your own wallet still breaks the on-chain link, because the Monero chain reveals nothing — but the exchange retains a record of the withdrawal.
03 注文し、チェックアウトでXMRを選択する
Choose the plan, location and billing term, supply an email address you control, and select Monero as the payment method. The invoice shows a fresh address, an exact amount and a QR code, valid for 90 minutes at a locked rate.
04 正確な金額を送信
Let the wallet add the network fee on top rather than subtracting it from the amount — that is the most common cause of an underpayment. Shortfalls up to 3% are accepted automatically.
05 確認を待つ
Ten confirmations, roughly twenty minutes. The status page updates live. When it completes, credentials are emailed to the address you supplied, and provisioning takes under a further minute.