Best Overall Security
Ledger Nano X
Bluetooth connectivity and support for 5,500+ coins in a certified secure element chip.
Best Budget Pick
Trezor Model One
Fully open-source firmware at $59 — the cheapest hardware wallet from a reputable manufacturer.
Best Mobile Option
Tangem
NFC card form factor — tap your phone to sign transactions with no seed phrase to write down.
コールドウォレットとは何ですか？
A cold wallet (also called a hardware wallet) stores your cryptocurrency private keys on a dedicated offline device. Unlike a hot wallet on your phone or laptop, it never exposes your keys to the internet, which means even a fully compromised computer cannot steal your funds.
Transactions are signed on the device itself using a secure element chip. You confirm every outgoing transfer by physically pressing a button or touching a screen. Malware on your host computer can see what you're signing but cannot move funds without the physical device.
Cold wallets make sense for any crypto you plan to hold for weeks, months, or years. The rule of thumb: if your exchange balance is above $1,000, you are already a target worth attacking. Moving the long-term portion into a hardware wallet converts a software-security problem into a physical-security problem, which is much easier to reason about.
コールドウォレット比較表
| ウォレット | 価格 | コイン | Bluetooth | 画面 | オープンソース |
|---|---|---|---|---|---|
| Ledger Nano Xおすすめコールドウォレット | ~$149 | 5,500+ | 一部対応 | ||
| Ledger Nano S Plus | ~$79 | 5,500+ | 一部対応 | ||
| Trezor Model T | ~$179 | 1,800+ | タッチ | ||
| Trezor Model One | ~$59 | 1,000+ | |||
| Tangem | ~$55 | 6,000+ | NFC | カード |
Prices shown are approximate MSRP in USD and may vary by region or promotion. Coin-support figures reflect what each manufacturer officially lists; some wallets support additional assets through third-party integrations.
ウォレットレビュー
Ledger Nano X
Best OverallHere's what makes it stand out for the right kind of holder:
- Bluetooth for mobile management via Ledger Live
- 5500_supported_coins_and_tokens
- Certified secure element chip (CC EAL5+)
- Manage multiple accounts simultaneously
- Largest ecosystem of third-party app integrations
Ledger Nano S Plus
Best Budget LedgerHere's what makes it stand out for the right kind of holder:
- Same security chip as Nano X at half the price
- 5500_supported_coins_and_tokens
- USB-C connectivity
- Larger screen than original Nano S
- Great entry point into Ledger ecosystem
Trezor Model T
Best Open SourceHere's what makes it stand out for the right kind of holder:
- Fully open-source firmware and hardware design
- Color touchscreen for secure input
- Shamir Backup splits recovery seed into shares
- MicroSD card slot for encrypted backups
- Passphrase support for hidden wallets
Trezor Model One
Cheapest Reputable OptionHere's what makes it stand out for the right kind of holder:
- Lowest price from a reputable manufacturer
- Fully open-source with 10+ year track record
- Simple two-button interface
- Supports 1,000+ coins
- Ideal for Bitcoin-focused holders
Tangem
Easiest for BeginnersHere's what makes it stand out for the right kind of holder:
- Card form factor — fits in your physical wallet
- NFC tap to sign — no cables or desktop needed
- 6000_supported_tokens
- No seed phrase by default (backup via second card)
- IP68 water and dust resistant
適切なコールドウォレットの選び方
- 予算を設定する Budget hardware wallets start at $59 (Trezor Model One). Mid-range options sit between $79 and $179. If you hold less than $2,000 in crypto, a cheaper wallet is fine; above that, it's worth paying for a certified secure element chip.
- コイン対応状況を確認する Verify that every coin and token you hold is on the wallet's official support list. Ledger supports 5,500+ assets including most EVM chains; Trezor supports 1,800+ with a tighter focus on Bitcoin and major altcoins. Niche chains (Cardano, XRP, Monero) are supported unevenly — always check before buying.
- オープンソース vs クローズドソース Trezor publishes the full source of its firmware and hardware schematics — independent researchers can audit the code and catch vulnerabilities. Ledger keeps the secure element chip firmware closed-source (manufacturer policy), which makes some privacy-focused users uncomfortable. Neither choice is wrong; decide based on your threat model.
- モバイル vs デスクトップ If you want to manage crypto from your phone on the go, choose a wallet with Bluetooth (Ledger Nano X) or NFC (Tangem). If you only sign transactions from a desktop, USB-C is cheaper and slightly more secure — Bluetooth is a larger attack surface, though Ledger's implementation has been audited.
- バックアップ方法 Most wallets give you a 12- or 24-word BIP39 seed phrase. Trezor's Shamir Backup (SLIP39) splits this into multiple shares so no single location holds your full recovery. Tangem takes a different approach: no seed phrase at all — the keys are generated on-chip and stay there. Pick the model that matches how paranoid you are about losing paper.
コールドウォレットのセキュリティに関するヒント
- 中古のハードウェアウォレットは絶対に購入しないでください。 A used wallet may have been pre-configured with a seed phrase the seller already knows. The moment you deposit funds, the attacker sweeps them. Always buy factory-sealed from the manufacturer's own store or a verified reseller listed on their website.
- シードフレーズは紙に書き留めてください — デジタル保存は絶対に避けてください。 Write your seed phrase on paper (or stamp it into metal for fire and water resistance). Never take a photo of it, type it into a computer, store it in a password manager, or email it to yourself — any of these is a single-point-of-failure that defeats the entire point of owning a hardware wallet.
- 資金を入金する前にリカバリーをテストしてください。 Before you move any serious amount of crypto into a new wallet, practice the recovery process. Reset the device, type your seed phrase back in, and confirm you can restore access to a test balance. A seed phrase you've never restored from is a seed phrase you can't trust.
- 到着時にパッケージが封印されていることを確認してください。 Hardware wallets ship with tamper-evident packaging. Look for intact holographic seals, verify serial numbers against the manufacturer's verification tool, and power on the device only after confirming it generates a fresh seed phrase (it should never arrive with a pre-printed seed card — that's a scam).
ホットウォレット vs コールドウォレット — それぞれの使いどころ
Hot Wallet
- 積極的にトレードしている少額資産
- デイトレードおよび頻繁な取引
- DeFi プロトコルへの迅速なアクセス
- 損失を許容できる金額
Cold Wallet
- 長期保有資産および貯蓄
- $1,000を超える金額
- 数か月〜数年単位で保有する予定のコイン
- 必ず安全に保管すべきコアポートフォリオ
The short version: keep only what you're actively trading in a hot wallet. Move everything else — your savings, your long-term positions, anything you cannot afford to lose — into cold storage. A $79 hardware wallet that eliminates an entire category of attack is the single highest-leverage security purchase in crypto.
コールドウォレットに保管する暗号資産を購入する
Start on Binance to buy, trade, and accumulate. Then transfer your long-term holdings to a cold wallet for true self-custody.
広告 · デジタル資産の価格は、高い市場リスクおよび価格変動の影響を受けます。 投資した資金をすべて失う覚悟がない限り、投資はお控えください。 利用規約およびリスク開示
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免責事項
Information on this page is educational and based on publicly documented specifications of the listed hardware wallets. Prices, feature sets, and firmware capabilities change — always verify current details on the manufacturer's official website before purchasing. This is not financial advice.