> For the complete documentation index, see [llms.txt](https://help.tpwallet.io/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.tpwallet.io/en/blockchain-basics/cold-wallet.md).

# What is a cold wallet

## What Is a Cold Wallet?

A cold wallet is a wallet management method that stores private keys or mnemonic phrases in an offline environment. Since a cold wallet is not directly connected to the internet, it can effectively reduce the risk of private keys being stolen through cyberattacks, malware, phishing websites, or remote intrusions.

In a blockchain wallet, what truly controls the assets is the private key or mnemonic phrase, not the wallet App itself. The core function of a cold wallet is to keep the private key as far away from online environments as possible, thereby improving the security of asset management.

***

#### How a Cold Wallet Works <a href="#how-cold-wallet-works" id="how-cold-wallet-works"></a>

The core principle of a cold wallet is: **private keys are stored offline, transactions are signed offline, and online devices are only responsible for broadcasting transactions**.

Simply put, a cold wallet usually does not directly connect to the internet. When a user needs to initiate an on-chain operation such as a transfer or authorization, the transaction information can first be generated on an online device, and then transferred to the cold wallet device for signing through QR code interaction.

After the signing is completed, the online device broadcasts the signed transaction to the blockchain network.

Throughout this process, the private key is always stored on an offline device or in an offline environment and is not exposed to the online device.

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#### The Difference Between Cold Wallets and Hot Wallets <a href="#cold-wallet-vs-hot-wallet" id="cold-wallet-vs-hot-wallet"></a>

The biggest difference between a cold wallet and a hot wallet lies in whether the private key remains in an online environment for a long period of time.

| Type        | Private Key Storage Method                  | Usage Features                                      | Suitable Scenarios                                                |
| ----------- | ------------------------------------------- | --------------------------------------------------- | ----------------------------------------------------------------- |
| Cold Wallet | Private keys are stored offline             | Higher security, relatively more complex to operate | Long-term storage, large-amount asset management                  |
| Hot Wallet  | Private keys are stored on an online device | Convenient to use, high interaction efficiency      | Daily transfers, DApp interactions, small-amount asset management |

The advantage of a hot wallet is that it is convenient and fast, making it suitable for daily use. For example, a wallet created in TokenPocket can be used for viewing assets, making transfers, accessing DApps, signing transactions, and other operations.

The advantage of a cold wallet is its higher level of security. It is suitable for storing assets that are not used frequently over the long term, especially for users managing large amounts of assets or holding assets for an extended period.

***

#### Why Use a Cold Wallet? <a href="#why-use-cold-wallet" id="why-use-cold-wallet"></a>

The main value of a cold wallet lies in improving asset security.

For ordinary users, once on-chain assets are transferred out, they are usually difficult to revoke or recover. Therefore, the security of private keys and mnemonic phrases is especially important.

Using a cold wallet can reduce the following risks:

* Private key leakage caused by an infected online device
* Sensitive information being read by malicious Apps or plugins
* Phishing websites tricking users into signing transactions or entering mnemonic phrases
* Remote attacks or Trojan programs stealing wallet information
* Users mistakenly storing mnemonic phrases in cloud storage, screenshots, or chat applications

By reducing the chances of private keys coming into contact with the internet, cold wallets lower the possibility of remote attacks and are more suitable for long-term storage of important assets.

***

#### Who Is a Cold Wallet Suitable For? <a href="#who-should-use-cold-wallet" id="who-should-use-cold-wallet"></a>

Cold wallets are not only suitable for professional users. Any user who holds a relatively large amount of assets or wants to securely store assets for the long term can consider using a cold wallet.

Cold wallets are more suitable for the following users:

* Users who hold crypto assets for the long term
* Users who hold a relatively large amount of assets
* Users who do not frequently conduct on-chain transactions
* Users who want to reduce the risk of private keys being exposed to online environments
* Users who have higher requirements for asset security

If users need to frequently participate in DApps, DeFi, NFTs, or on-chain transactions, they can manage assets in layers: store large-amount assets in a cold wallet and place small amounts for daily use in a hot wallet.

***

#### What Should You Pay Attention to When Using a Cold Wallet? <a href="#cold-wallet-security-tips" id="cold-wallet-security-tips"></a>

A cold wallet can reduce online risks, but it does not mean absolute security. Users still need to maintain good security habits.

Please note:

* Mnemonic phrases and private keys must be stored offline. Do not take screenshots, take photos, or upload them to the cloud.
* Do not send your mnemonic phrase to anyone, including so-called customer service representatives or administrators.
* Do not enter your mnemonic phrase on unfamiliar websites, forms, or DApps.
* When using a hardware wallet, please purchase the device through official channels.
* When initializing a hardware wallet, make sure the mnemonic phrase is generated by the device itself, rather than provided by someone else.
* Before signing a transaction, carefully check the receiving address, amount, network, and authorization details.
* Wallets or devices that are not in use should be properly stored to avoid loss or damage.
* It is recommended to make multiple offline backups of important mnemonic phrases in different locations to prevent loss.

A cold wallet protects the storage environment of the private key, but users still need to guard against phishing signatures, incorrect transfers, fake websites, and social engineering scams.

***

#### Is a Cold Wallet Completely Offline? <a href="#is-cold-wallet-completely-offline" id="is-cold-wallet-completely-offline"></a>

Strictly speaking, the private key of a cold wallet should always be stored in an offline environment. However, in actual use, a cold wallet may need to work with an online device to complete transaction broadcasting.

For example, the online device is responsible for generating the transaction and connecting to the blockchain network, while the cold wallet is responsible for offline signing. The signed transaction is then sent to the blockchain by the online device.

Therefore, the key point of a cold wallet is not that it “never participates in the transaction process,” but that **the private key is not directly exposed to an online environment**.

***

#### The Difference Between a Cold Wallet and a Watch-Only Wallet <a href="#cold-wallet-vs-watch-wallet" id="cold-wallet-vs-watch-wallet"></a>

Cold wallets and watch-only wallets are often mentioned together, but they are not exactly the same.

A watch-only wallet usually imports only the wallet address, without importing the private key or mnemonic phrase. It can be used to view assets, transaction records, and address status, but it cannot directly initiate transactions that require signing.

A cold wallet stores the private key and can sign transactions, but the private key is usually kept in an offline environment.

| Type              | Whether Private Key Is Stored  | Whether Transactions Can Be Signed | Main Purpose                           |
| ----------------- | ------------------------------ | ---------------------------------- | -------------------------------------- |
| Cold Wallet       | Yes, stored offline            | Yes                                | Secure storage and signing             |
| Watch-Only Wallet | No, only the address is stored | No                                 | Viewing assets and transaction records |

In actual asset management, users can also use a watch-only wallet to view the asset status of a cold wallet address, while keeping the actual signing operation on the cold wallet device.

***

#### Summary <a href="#summary" id="summary"></a>

A cold wallet is an asset management method that focuses more on security. By storing private keys or mnemonic phrases offline, it reduces the risk of private keys being stolen through cyberattacks or malicious programs.

For long-term holdings or relatively large amounts of crypto assets, a cold wallet is a more prudent choice. Users can also combine TokenPocket’s multi-chain asset management capabilities with security solutions such as hardware wallets to balance convenience and security.

Whether using a cold wallet or a hot wallet, the most important principle is always: **protect your mnemonic phrase and private key, and carefully confirm every signature and transaction.**