Before you begin

D'CENT Biometric Wallet is equipped with 4-buttons for navigation.

• Up(∧)/Down(∨) buttons : Move between selectable items or change value of numbers or characters.

• OK button : Confirm selected item or input value.

• Back button : Move to previous menu or cancel the current input value.

Step-1 : Select Language & Create Wallet

Power on D'CENT Biometric Wallet

To power on the device, press and hold the "Power" button for 3 seconds, which is located on the right-side.

Select Language

Use "Up(∧) or Down(∨)" button to select your language and press "OK" button.

Language support : English, Korean, Chinese, Japanese, Spanish

Select "Create Wallet"

To create a new wallet, select "Create Wallet" from the menu.

Step-2 : Register PIN & Fingerprint

To protect accessing your wallet, register a new PIN and your fingerprint. Firmware below v.2.5.5 only supports 4-digit PIN length.

Register a new PIN (4 to 8 digits)

Use "Up(∧, increase number value)" or "Down(∨, decrease number value)" button to input your PIN. Pressing the "OK" button on the cold wallet will confirm the input.

When you have entered 4 digits, you will see "OK" text on the screen. If you wish to set your PIN to 4-digits long, then press the "OK" button on the hardware wallet.

If you wish to set the PIN to a longer digit, you can change the ("OK" text) value on the screen by pressing the "Up(∧) or Down(∨)" button. Your PIN can be set to 4, 5, 6, 7, or 8 digits long.

If you register a 4-digit PIN, you will see a "Security level is low" warning on the screen. If you wish to use such a PIN, press the "OK" button on the cold wallet to continue.

Verify your PIN

Re-enter the same PIN you have set in the previous step to verify for correctness.

※ If the PIN numbers do not match, you will have to restart the PIN registration.

Register Fingerprint

1) To register your fingerprint, touch your finger on the sensor to scan.

Fingerprint sensor is located in the middle of where the navigational buttons are located. Check the location of .

2) Slightly change the angular positioning of the same finger when scanning and repeat until 100% (8 correct scans) is reached.

Verify Fingerprint

Scan your fingerprint one last time to verify registered fingerprint.

※ If the fingerprint does not match, you will have to restart the Fingerprint registration. .

※ If re-registering fingerprint, try using a different finger instead.

※ If unable to register your fingerprint for any reason, you will be given an option to skip the fingerprint registration. Fingerprint can be registered from the menu at a later time.

※ If fingerprint verification fails, your fingerprint will not be saved.

Step-3 : Write down the recovery seeds

Before you begin - What are recovery seeds(Mnemonic code)?

Recovery seeds are the codes that you use to recover your wallet.

If your D'CENT Cold Wallet is ever lost, stolen, damage, or wiped and you no longer have any access to your wallet, using recovery seeds is the only method of recovering your existing wallet.

You MUST write down all the recovery seeds on the Recovery Card and keep it secured in a safe place.

Recovery seeds required for recovering your existing wallet is shown only once during initial setup. If you lose your recovery card, there is nothing we can do to help you recover your funds. You are solely responsible to secure your recovery card in all events.

Write down the recovery seeds from the lists

1) Press "OK" button only when you have fully understood the WARNING notice.

2) Write down all the recovery seeds (words) shown on the screen of your cold wallet. Press "OK" button to see the next list of words.

There are 6 lists with total of 24 words and each list has 4 words shown. Make sure you write them down correctly and in the exact same order as shown.

3) When you have written down all 24 words, press "OK" button to continue.

Recovery Seeds Verification

Enter all 24 words written on the recovery card to proceed with verification.

Enter the first 3 characters

※ How to input : Use the "Up(∧)/Down(∨)" buttons - ∧(increase value from a to z) or ∨(decrease value z to a)

For example, if the recovery word is "patch", enter the first character "p" and press the "OK" button > enter the second character "a" and press the "OK" button > enter the third character "t" and press the "OK" button.

Finding suggestion from the list shown

From the list of words available, select the correct word(patch) using "Up(∧)/Down(∨)" buttons and press "OK" button to choose as the answer.

※ If you find yourself having written down the words incorrectly, you can press "OK" button(RETRY) to re-enter the recovery seeds from the lists for review.

Complete your review by entering all 24 words this way.

Step-4 : Completing the Initial Setup

Congratulation, you have passed the quiz and your new wallet is created. From your cold wallet, you can check the lists of coin accounts available. You are now ready to use your new wallet together with the mobile application.

Check for the latest Firmware

Once you have completed the Initial Setup, make sure to visit D'CENT Wallet homepage and check for the latest firmware available. Newer version of firmware may include additional support for cryptocurrency assets and new wallet features.

More information on firmware update can be found from .

Depending on your Android phone model, finding the Bluetooth menu may be different.

Find Bluetooth menu from the upper drag down menu

On your Android phone, Drag the notification bar at the top of the screen down to find the Bluetooth menu.

Find Bluetooth menu from the "Settings"

Settings > Connections > Bluetooth, you can enable and enter the Bluetooth menu from here.

Firmware update indicator

Whenever new coin support is added or bug fix has been made, a new firmware will be available for installation. Your mobile app will show an indication when a newer version of the firmware is released.

Before you update the firmware

24 words were provided during the Initial Setup of your Biometric Wallet and you have written them down on the recovery card. Make sure you still have the recovery card. Unlike other products, your wallet will still remain safely intact inside the secure chip even after updating the firmware. This means that you don't need to recover your wallet every time you update the firmware as other products requires you to do. (Keep your recovery card secured and ready just in case your Biometric Wallet is no longer accessible, possibly due to "brick"ed device or something that went wrong during the update process.)

Firmware update will take approximately 3 minutes to complete.

How to update firmware

Requirements for the firmware update

✅ Firmware can ONLY be updated from using a personal computer running a 64bit OS (Windows or Mac).

✅ Must use Google Chrome browser.

✅ Must use a USB cable that is capable of data transfer. (If your Biometric Wallet's charging port is Micro USB 5 PIN Type, we recommend using the USB cable included in the package box)

If you are ready, click to go to the Firmware Update homepage.

Connect Biometric Wallet to your computer

1) Connect the computer and the Biometric Wallet using the USB cable

2) Authenticate with fingerprint or PIN to unlock your Biometric Wallet

Start the firmware update

1) On the firmware update page, click the "Connect D'CENT hardware wallet" button.

2) When the browser prompts a connection popup, click the D'CENT device and click "Connect" button.

If the connected Biometric Wallet is already running the latest firmware version, the following screen will be displayed.

3) Click the "Start the update" button.

4) Click the "Reboot to bootloader mode" button. Biometric Wallet is automatically rebooting into bootloader mode.

When entering bootloader mode, the following screen appears on the display of the Biometric Wallet.

5) Once the Biometric Wallet has rebooted into bootloader mode, click the "Keep updating" button.

6) When the browser prompts a connection popup, click the D'CENT device and click "Connect" button.

7) Firmware update from the webpage will take approximately 3 minutes to reach 100%. Please wait.

8) From the Biometric Wallet, you can also check the progress of firmware update.

Completing the firmware update

When the firmware update is completed, the Biometric Wallet will automatically reboot to its normal working mode.

Now you can check the latest firmware information by running the D’CENT mobile app and connecting the Biometric Wallet.

If you are having trouble updating the firmware, please refer to the troubleshooting guide below.

Before you begin

When a new Biometric Wallet is purchased or the device you've been using is reset to factory, you can recover your pre-existing wallet.

Your pre-existing wallet can be recovered by entering all 24 words written down on the Recovery Card which was generated when you first performed the Initial Setup.

Recovering wallet after deleting data on D'CENT device

To perform wallet recovery, you must first . Once the device has been reset to the factory condition, follow the instructions from the section below to recover your wallet.

Step-1 : Select Language & Recover Wallet

Power on D'CENT Biometric Wallet

To power on the device, press and hold the "Power" button for 3 seconds, which is located on the right-side.

Select Language

Use "Up(∧) or Down(∨)" button to select your language and press "OK" button.

Select "Recover Wallet"

To recover wallet, select "Recover Wallet" from the menu.

Step-2 : Register PIN & Fingerprint

To protect accessing your wallet, register a new PIN and your fingerprint.

Register a new PIN (4 to 8 digits)

Use Up(∧, increase number value) or Down(∨, decrease number value) button to input your PIN. Pressing the "OK" button on the cold wallet will confirm the input.

When you have entered 4 digits, you will see "OK" text on the screen. If you wish to set your PIN to 4-digits long, then press the "OK" button on the hardware wallet.

If you wish to set the PIN to a longer digit, you can change the ("OK" text) value on the screen by pressing the "Up(∧) or Down(∨)" button. Your PIN can be set to 4, 5, 6, 7, or 8 digits long.

If you register a 4-digit PIN, you will see a "Security level is low" warning on the screen. If you wish to use such a PIN, press the "OK" button on the cold wallet to continue.

Verify your PIN

Re-enter the same PIN you have set in the previous step to verify for correctness.

※ If the PIN numbers do not match, you will have to restart the PIN registration.

Register Fingerprint

1) To register your fingerprint, touch your finger on the sensor to scan.

Fingerprint sensor is located in the middle of where the navigational buttons are located. Check the location of .

2) Slightly change the angular positioning of the same finger when scanning and repeat until 100% (8 correct scans) is reached.

Verify Fingerprint

Scan your fingerprint one last time to verify registered fingerprint.

※ If the fingerprint does not match, you will have to restart the Fingerprint registration. .

※ If re-registering fingerprint, try using a different finger instead.

※ If unable to register your fingerprint for any reason, you will be given an option to skip the fingerprint registration. Fingerprint can be registered from the menu at a later time.

※ If fingerprint verification fails, your fingerprint will not be saved.

Step-3 : enter the recovery words

1) Enter the 24 recovery words recorded on the recovery card, numbered 1 through 24.

※ How to input : Use the "Up(∧)/Down(∨)" buttons - ∧(increase value from a to z) or ∨(decrease value z to a)

2) Press the "Down(∨)" button to review whether the 24 recovery words were entered correctly in order.

3) If all words are entered correctly, select "I am ready" at the bottom of the review menu.

Step-4 : Completing the Wallet Recovery

After completing the wallet recovery, connect your hardware wallet to the D'CENT mobile application to synchronize. You need to re-add all the cryptocurrency accounts that you have created in the past. (Try to keep a list of the accounts that you have created, so that you can easily re-add them after the wallet recovery).

Important notes after recovering your wallet

Check for the latest Firmware

Once you have completed the Initial Setup, make sure to visit D'CENT Wallet homepage and check for the latest firmware available. Newer version of firmware may include additional support for cryptocurrency assets and new wallet features.

More information on firmware update can be found from .

Both the Ledger wallet and the D'CENT wallet follow the same BIP standards for wallet recovery. However, each wallet service may have used a different wallet derivation path to generate a private key for each type of digital asset that each wallet service currently supports.

Below is a screenshot that compares the account addresses (ie: BSC & ETH) between the Ledger wallet and D'CENT wallet. In this example, D'CENT wallet was recovered using the mnemonic code from the Ledger wallet. Notice how the addresses for the BSC and ETH accounts are the same because the wallet derivation paths are the same between these 2 wallet services.

List of recovery-compatible assets (mainnets)

The wallet derivation paths for the following cryptocurrencies are the same between the Ledger wallet and the D'CENT wallet. This means that using the Ledger's mnemonic code, the same accounts(private keys) can be generated on the D'CENT wallet.

• Binance Smart Chain (BSC - BNB)

• Bitcoin Cash (BCH)

• Cosmos (ATOM)

How to recover token assets (ie: ERC20, BEP20, TRC10, ...Etc.)

It is likely that you also held token assets in the Ledger wallet. Token assets are digital assets issued by blockchain projects (service providers) via smart contracts that exist on EVM-compatible networks such as Ethereum, Binance Smart Chain, Tron, Polygon, and more.

Each EVM-compatible network has a name for its token standard which is represented or marked as 'ERC20' for tokens on the Ethereum network, 'BEP20' for tokens on the Binance Smart Chain network, 'TRC10' and 'TRC20' for tokens on the Tron network, 'Polygon-ERC20' for tokens on the Polygon network, and so on. The token standards help identify easily which network(s) the token assets were issued on.

For example, let's say you held ETH coins and USDT tokens (ERC20) in the Ledger wallet. To recover these assets, you must add two accounts to the D'CENT wallet. First, add the Ethereum account to recover ETH coins. Next, add the USDT (ERC20) account linking it to your Ethereum account and your USDT tokens will be found.

You can easily search for which digital assets are supported (listed) in the D'CENT wallet by visiting the link below.

If the token asset that you are looking for is not displayed in the list, you can also manually add the account as a custom token account. For detailed instructions, please refer to the guide below.

From the Biometric Wallet, you can check the account information that is synchronized with the mobile app.

Check account info

The main screen of the device lists various coin accounts. Select and choose an account to view the details.

• For more information on how to create an account, please see .

• For more information on synchronizing between Biometric Wallet and mobile app, please see .

Check account address

Without the mobile app, you can also check coin account address and QR code form of the address from the Biometric Wallet.

Deleting account info on the Biometric Wallet

If there are too many unused accounts and you want to delete account information, you can do the following. In this case, all account information is deleted. 1) On your Biometric Wallet, navigate to "Setting > Security > Delete Account"

2) Enter your PIN and when you confirm the warning message by "OK button", all your account info will be deleted. 3) Synchronize with your mobile app and you will notice that there is no account shown on the mobile app screen.

From the mobile app, you can re-add the accounts that you would like to see again.

Enable NFC on your phone

For iOS phones, the NFC function is enabled by default.

For Android, enable the NFC function as "Read/write NFC tags".

Download D'CENT App (Android & iOS)

To download from the mobile app stores, type D'CENT Wallet as the keyword search or use the official download links below.

Mobile App basic setting

Select Wallet mode

If you are launching the mobile app for the first time, you will need to go through the initial setup and select a wallet mode.

When the app launches, select “Card Wallet” as shown below.

App Password Registration

To protect your D'CENT mobile app, you must set a 6-digit password. This app password will be required every time you launch the D'CENT mobile app, so be sure to remember it.

If you don't remember the 6-digit password, you will have to reinstall the D'CENT App.

Mobile App Permission Settings

A permission request popup will appear when you launch the D’CENT mobile app. Review the permissions being requested, then click “Confirm” button to proceed.

Set up the All-in-One Wallet

Scan your All-in-One Wallet

1) On the back of your phone, tag the All-in-One Wallet to scan.

2) Tap the "Allow" button to proceed with notification permission. You can turn notifications On / OFF at any time from the "Settings" menu. For more details about the notification feature, please refer to .

3) Once the All-in-One Wallet is successfully scanned, wallet synchronization will begin.

4) After the sync is complete, the My Wallet tab will display three default coin accounts: Ethereum, Kaia, and Polygon. You can also tap the “+ Add Account” button to add more coin accounts.

Change the factory PIN to your own PIN

When you first scan the All-in-One Wallet, a banner will appear prompting you to change the factory PIN.

To use the All-in-One Wallet, you must change the factory PIN to your own PIN.

1) At the top of the screen, click on the banner to change the factory PIN.

2) Click on "Change now".

3) Check “I have checked the information”, then click the “Start” button.

4) From your All-in-One Wallet, find the factory PIN by removing the ribbon masking.

5) Enter this 6-digit factory PIN. (ie: 530226)

6) On the back of your phone, tap the All-in-One Wallet to scan.

7) Enter a new PIN for your All-in-One Wallet. (ie: 123456)

8) Enter the same new PIN. (ie: 123456)

9) On the back of your phone, tag the All-in-One Wallet to scan.

10) Click the “Confirm” button to complete the PIN change process.

Change the factory PIN of the Backup Card

Before the Backup Card can be used, the factory PIN must be changed to your own PIN.

1) Click the More (⋮) button in the "Settings" tab.

2) Select the "Change Card PIN" menu.

3) Check "I have checked the information", then click the "Start" button.

4) From your Backup Card, find the factory PIN by removing the ribbon masking.

5) Enter this 6-digit factory PIN. (ie: 130478)

6) On the back of your phone, tag the Backup Card to scan.

7) Enter a new PIN for your Backup Card. (ie: 123456)

8) Enter the same new PIN. (ie: 123456)

9) On the back of your phone, tag the Backup Card to scan.

10) Click the “Confirm” button to complete the PIN change process.

You can change various settings of the mobile app from the "Settings" menu.

Manage All Wallets

You can manage all wallets currently registered in the app, including Biometric Wallets, Card Wallets, and App Wallets. And you can also add new wallets.

If no wallets are registered, please click the Manage All Wallets button and register the wallet you want to use from Biometric Wallet, Card Wallet, or App Wallet (Software).

For more details about the Manage All Wallets menu, please refer to the guide below.

Change Language

You can change the language of the D'CENT mobile app. Supports the following languages:

• English

• Korean

• Japanese

Local Currency

​Set the currency to display coin / token price.

It supports a total of 39 local currencies, including KRW (South Korean Won), USD (United States Dollar), JPY (Japanese Yen), EUR (European Euro), GBP (British Pound Sterling), CNY (Chinese Yuan), and others. And it supports BTC (Bitcoin) and ETH (Ethereum) cryptocurrencies.

Notification

You can set up push notifications for major coin price fluctuations and market trend updates.

Push notifications are sent in the following cases:

• When there are price fluctuations for BTC, ETH, XRP, BNB, or SOL coins on CoinGecko.

• When a cryptocurrency newly enters the Top 7 trending list on CoinGecko or CoinMarketCap.

By tapping on a notification, you can view detailed information about the cryptocurrency in the "Insight" tab.

Theme

You can set the D’CENT mobile app to either Light Mode or Dark Mode. The app’s appearance will change depending on the selected theme. By default, the theme is set to Light Mode. (If you select System, the theme will automatically follow your phone’s Light or Dark Mode settings.)

Security & Authentication

You can manage security settings for the D’CENT mobile app, including App lock, change password, and Biometric authentication.

Lock on App Launch

This setting allows you to enable or disable the app lock when launching the D’CENT mobile app. By default, this option is enabled.

If you turn it off, the app will open without requiring the 6-digit password or biometric authentication (fingerprint or Face ID).

Lock After Inactivity

This setting allows the D’CENT mobile app to automatically lock after a period of inactivity. The default value is 20 minutes, and you can choose from 5 minutes, 10 minutes, 20 minutes, or Never.

Change Password

You can change the 6-digit password of the D'CENT mobile app.

The 6-digit password for the mobile app is the password you registered when initially setting up the app.

Biometrics

In addition to the 6-digit password, you can also select another method of authenticating to the mobile app.

• For Android phones, fingerprint authentication can be set as a method of authentication.

• For iPhones, Touch ID or FaceID can be set as a method of authentication.

Laboratory

The Laboratory menu provides experimental features developed by D’CENT. These features may be modified, discontinued, or removed at any time. By enabling them, you agree that you are solely responsible for their use.

• Enable Testnet : This feature is intended for developers or testing DApp services. After enabling this option, enter "test" when adding an account to display all available testnets.

• Custom Path Account : The Custom Path Account feature is used for recovering assets sent to the wrong network between EVM-compatible blockchains. This is considered an advanced setting and is not recommended for general users.

• Clear Cache

When your Biometric Cold Wallet is connected, clicking the More (⋮) button in the Settings tab will display the following menu, as shown in the image.

Firmware update

You can check the firmware version of your Biometric Wallet. If the firmware is not up to date, a “New” icon will appear to indicate that an update is available.

By pressing the "Firmware Update" button, you can check for the latest version and find instructions on how to update.

Click for more information on firmware updates.

Device Info

When you click the Device Info menu, you can view your Biometric Cold Wallet’s device information, including the Bluetooth name, firmware version, and KSM version.

And you can also change the device name displayed when booting the Biometric Wallet by clicking the edit icon next to “My D’CENT”.

Delete Device

Starting from version 8.1.0 of the D'CENT mobile app, a "Delete Device" option is available for removing registered biometric cold wallets. This feature allows you to delete unused cold wallets directly within the mobile app for better wallet management.

Deleting the device from the app does not delete any of the private keys associated to the wallet accounts you have created. You can recover your assets by reconnecting the device via Bluetooth.

When you tap the "Delete" button, you will be prompted to authenticate with either your 6-digit mobile app password or biometric verification to proceed.

Receiving an NFT token to D'CENT Wallet

Let’s see how to send NFTs from another wallet to D'CENT Wallet. In our example, we have NFTs using Metamask at Rarible, an NFT marketplace. At this time, the situation is where you want to send NFT to D'CENT Wallet. The process of transferring an NFT from other exchanges and wallets to D'CENT Wallet is similar.

1. Check the NFT you currently have. In this example, we have an NFT in the MetaMask wallet connected to the Rarible Marketplace. To transfer this NFT token to the D'CENT Wallet, click on Transfer.

2. The MetaMask (or wallet that is currently linked to the service) screen will be triggered, and you will have to create a send transaction. After entering the address, set the fee and click OK. This will send the NFT transfer transaction to the blockchain network (Ethereum in the example).

3. When the NFT transfer transaction gets completed from the blockchain network, you will see that an NFT received to your D'CENT Wallet will be displayed on the Collectibles Tab.

Sending an NFT token from D'CENT Wallet to another wallet

Let’s see how to send out an NFT token from D'CENT Wallet to another wallet or exchange. In the example, the situation is where the MetaMask will receive the NFT token while connected to Rarible, an NFT marketplace. Sending from D'CENT Wallet to other exchanges and wallets is a similar process.

1. From the Collectibles Tab of your D'CENT Wallet, select your NFT collection and then click the Send button. When the screen changes, enter the recipient's address.

2. After checking the recipient's address, set the fee and finally check the transaction details to be sent to the blockchain network.

3. After the transaction is transmitted to the blockchain network, you will need to wait a certain period of time for the transaction to be completed. When the transaction is completed, you will see that the NFT token that was sent will no longer appear in the collectibles list.

D’CENT Mobile App features a native DApp browser that is built into the application, which allows accessing web-based blockchain services by connecting a wallet account to log in.

From the DApp browser, you can use Ethereum-based DApp such as Maker Dao, Compound, Uniswap, and Kaia-based BApp service such as KLAYSTATION.

Using DApp service on the Discovery tab

You can use DApp service in the "Discovery" tab located at the bottom menu of the app. Here, it lists various services that can be used in conjunction with D’CENT wallet. You can simply click on a service to access the DApp.

You can also view the list of DApp services grouped by type, such as Staking, Exchange, and DeFi.

Unlisted DApp services can be accessed by entering the URL or through Google search.

Using the Bookmark function

Users can save the visiting service site as a "favorite (or bookmark)", which creates a shortcut for faster access the next time.

Favorites can be added in the following ways:

1) From the DApp service site Tap the "More (⋮)" button at the bottom of the site and select "Add to favorites."

2) From the Discovery tab service list Tap the star icon next to a service to add it to your favorites.

Added favorites can be found in the “Favorite” section of the Discovery tab. You can also remove a favorite by tapping the star icon again.

Supported Networks

As of December, 2025, following networks are supported on D'CENT wallet's dapp-browser. More networks will be added overtime.

You can see how to switch blockchain network of dapp-browser in the below link.

Mainnet

• Ethereum

• Binance Smart Chain

• Polygon

• RSK

Testnet

• Ethereum Testnet Sepolia

• Binance Smart Chain Testnet

• RSK Testnet

• Flare Testnet Coston

Listed Services

As of Mar, 2026, following services are listed. For detailed information on each services, please visit the services sites.

• Buy Cryptocurrency Topper (), MoonPay (), Simplex () : Buy crypto using your payment or credit card

• Metamask Integreation () : EVM compatible address in the D'CENT Wallet can be connected with the Metamask

• Astar portal () : Astar Portal is the official Astar Network application for using everything that Astar Network offers.

Many more great services will get added to the list over time.

For all users in the world of cryptocurrencies, understanding the concept of “allowance” (aka. Approval) is crucial. In the crypto space, an allowance refers to granting permission to decentralized applications (dApps) to perform actions on your behalf. However, it’s important to grasp the associated risks and the significance of managing these permissions effectively.

What are dApp Allowances?

In the crypto realm, dApp allowances involve granting permission to dApps to execute specific actions using your tokens. This permission enables them to transfer your tokens, create new ones, or carry out other operations on your behalf.

Here is an example of an Ethereum wallet searched on the Etherscan that shows dApps granted with allowances:

Recognizing the Risks of Unchecked Allowances

Failing to manage dApp allowances can expose users to various risks. Here are some examples of potential hazards:

a) Unauthorized Token Transfers: If a dApp gains access to your allowances, it can transfer your tokens without your consent, leading to the loss or theft of your assets.

b) Exploitation of Minting Permissions: Malicious dApps may misuse allowances to mint new tokens in your name, potentially devaluing your existing holdings.

c) Account Vulnerability: Allowing unrestricted dApp access could compromise the security of your account, leaving it susceptible to unauthorized control or manipulation.

Am I safe if my wallet is disconnected?

It’s important to understand the distinction between disconnecting your wallet from a dApp and revoking approvals or allowances. While these processes may seem similar, they have fundamental differences that impact the level of access and control granted to dApps.

Disconnecting wallet vs. Revoking allowances

When you disconnect your wallet from a dApp, you are essentially canceling the permission for that dApp to access certain information, typically revoking the dApp’s ability to view your public address, token balances, and past activity. Disconnecting your wallet helps limit the visibility and interaction of the dApp with your account.

Revoking an approval or allowance goes beyond disconnecting your wallet. When you revoke an approval, you are essentially cutting off the dApp’s access to the contents of your wallet entirely. This means the dApp can no longer retrieve or manipulate your tokens. Revoking an approval is a more stringent action that ensures the dApp is completely barred from accessing and moving your assets.

It is crucial to note that while disconnecting your wallet limits certain permissions and visibility, it does not guarantee the same level of security as revoking approvals.

Considerations for effective permission management

a) Preventing Unauthorized Actions: By regularly reviewing and revoking unnecessary allowances, you limit the ability of dApps to perform actions on your behalf, reducing the risk of unwanted transactions or token misuse.

b) Protecting Token Integrity: Revoking allowances from unused or suspicious dApps ensures they cannot tamper with or create tokens associated with your account, preserving the integrity of your token portfolio.

c) Enhancing Account Security: Proper permission management minimizes the chance of a malicious dApp taking over your account, preserving your privacy, control, and overall security.

How to revoke dApp Approval(Allowances)

Vigilant users can utilize reliable revocation tools such as , , , , , or to efficiently manage and revoke allowances granted to dApps.

NOTE: Network fees are charged for revoking dApp Allowances as they are blockchain transactions. Depending on the revocation service you use, additional fees may apply.

Example of revoking allowance using Etherscan (Ethereum):

From D’CENT Wallet’s Discovery tab (the dApp browser), visit Etherscan () and click on ‘Token Approvals’ under the Services sub-menu.

Click on ‘Connect to Web3’ and select ‘MetaMask’ to trigger a wallet connection on D’CENT Wallet.

You will be able to see which tokens and dApps are granted with Allowances. Click on the blue ‘Revoke’ button to revoke the allowance.

Example of revoking allowance using ‘Revoke’ (multichain):

Another excellent tool for users who use dApps on multiple networks is a third-party platform called ‘Revoke’.

From D’CENT Wallet’s Discovery tab (the dApp browser), visit Revoke (). Click on the main menu and click on ‘Connect Wallet’.

Click on ‘MetaMask’ to trigger a wallet connection with D’CENT Wallet.

Once connected, you will be able to see details of token assets and allowances granted to the smart contract that they’ve interacted with in the past. Scroll the screen to the right and you can find the ‘Revoke’ buttons under the Actions menu.

Swap service allows you to quickly and easily exchange one cryptocurrency for another.

D'CENT Wallet's Swap service enables seamless crypto exchanges across various blockchains. To facilitate this, it integrates with aggregators such as 1inch, ChangeNOW, and Changelly.

One of the key advantages of D'CENT Swap is that it provides bridging, cross-chain swaps, and regular swaps all within a single interface. For example, you can swap USDT on the Ethereum network for USDT on the Polygon network effortlessly.

Access the Swap service

1) You can access the Swap service through the following three methods:

• ① D'CENT App → Tap the "⇄(Swap)" button at the top of the [My Wallet] tab.

• ② D'CENT App → In the [My Wallet] tab, select the coin account you added → Tap the "⇄(Swap)" button.

• ③ D'CENT App → Tap the "⇄" icon in the bottom Global Navigation Bar (GNB).

2) When you access the Swap service, a screen will appear where you can select the From token (the token you are sending) and the To token (the token you will receive).

Choosing a Token to Swap

1) Select the token to send in the From section. Only tokens that are currently held in your wallet can be selected in the From field.

For each token, the network, token account name, and available balance will be displayed.

To change the sending token, tap the token account name as shown in the image below. You can either search for a token or select one from the list.

2) In the To section, select the token you want to receive through the swap.

Just like in the From section, tapping the token account name will open a popup where you can choose a token.

If you want to select a token that is not already added to your wallet, you can either choose it from the "To Token" list or enter the token name in the search box.

Entering Swap Amount and Selecting a Service Provider

1) Select the tokens to swap in the From (sending token) and To (receiving token) sections. Enter the amount of the token you wish to swap in the From section.

2) After entering the amount in the From (sending token) section, the estimated amount and value of the To (receiving token) will be displayed.

You can also check the service provider offering the quote, the swap rate, and the estimated network fee.

By tapping the displayed service provider, you can view other supported liquidity providers and select a different one that offers a better swap rate or is recommended for your transaction.

3) If the receiving token is not yet added to your D'CENT wallet, an "Add Account" button will appear. Select the account that will cover the network fee, enter a name for the new account, and tap "Add Account" to create the token account.

Slippage or Exchange Rate Settings

1) If the selected quote is from a decentralized exchange (DEX) provider.

You can check the Slippage information at the bottom of the screen.

Slippage refers to the difference between the expected price at the time of order placement and the actual price at which the transaction is executed. It typically occurs in highly volatile or low-liquidity markets. By default, the optimized slippage rate for the transaction is recommended and displayed.

Users can manually adjust the slippage settings. In addition to the preset options of 0.5%, 2%, and 5.5%, you can set a custom value anywhere between 0.01% and 50%.

2) If the selected quote is from a centralized exchange (CEX) provider.

You can check the exchange rate information. In this case, there are two exchange rate options:

• Flexible (Variable): The rate may change based on market fluctuations.

• Fixed: The rate is locked in at the time of transaction confirmation.

Approve Token

1) If the token selected in the From field is based on the ERC-20 standard and the transaction is being processed through a decentralized exchange (DEX), the "Approve" button will appear instead of the "Swap" button. You must first tap "Approve" to authorize the token before proceeding with the swap.

This approval step allows the DEX service provider to access the token for swapping. For example, if the quoted provider is 1inch, you will need to approve access to the token for 1inch in order to proceed with the swap.

2) Tap the "Approve" button, check the "Confirmed." box on the next screen, and then tap "Confirm". Review the transaction signature details, tap "Approve", and complete the signature by authenticating with your fingerprint or PIN in the wallet.

3) After the approval is complete, re-enter the amount to swap. If the same service provider (e.g., 1inch) is selected in the quote again, the "Swap" button will now appear.

The provider will also be marked as "Approved" in the provider list.

Sign the Transaction and Complete the Swap

1) Once you have completed the token approval, tap the "Swap" button. Next, review the transaction details and tap "Confirm" or "Send".

To complete the transaction, check the signature request and authorize it using your fingerprint or PIN in the wallet.

2) After signing the transaction, tap "Swap History" to check the status of the swap.

3) If the status shows "Completed", you can view the swapped cryptocurrency in the "My Wallet" tab.

GasPass is a feature that allows you to make transactions without worrying about gas fees by using coupons. By registering various coupons (vouchers) in the “GasPass” menu, the gas fees for transfers or swaps are automatically paid to the blockchain using your available coupons.

How to Register GasPass

Follow the steps below to register your GasPass:

1) In the My Wallet tab, tap the “GasPass” button.

2) Click on “Register Coupon.”

3) Enter the voucher code of the coupon you own, and click “Register.”

4) A confirmation message will appear indicating that the coupon has been successfully registered.

Once a coupon has been successfully registered, you will see your Total Gas Balance displayed in the GasPass menu.

To view the details of a registered coupon, click the “Active Coupons” button. The Coupon Details screen will show the coupon’s Registered amount, Used amount, Expiration date, Usage count, and other relevant information.

How to Send Coins Using GasPass

Sending coins with GasPass is no different from the usual method.

Sending Coin

Please refer to to learn how to send coin.

1) After entering the amount you want to send and setting the network fee, click the "Next" button.

2) On the transaction review screen, GasPass is automatically applied, and the network fee will be deducted using the available coupon balance. You can also manually disable GasPass if needed.

Click the "Send" button to proceed.

3) If GasPass is applied, you will first need to sign the transaction to automatically pay the network fee with the coupon. Check the transaction details on your wallet and authenticate with your fingerprint or PIN.

4) You will then need to sign the transaction to send the coin. Please check the transaction details on your wallet and authenticate with your fingerprint or PIN.

5) Once the transaction has been sent to the blockchain, a confirmation message will appear in the mobile app. Tap the “OK” button to return to the main screen.

Swap

Please refer to to learn how to use Swap service.

1) When using the swap service, if you have a registered GasPass, it will be automatically applied on the estimate screen after you enter the swap amount.

2) You can also confirm that GasPass is applied on the swap transaction review screen. If needed, you can manually disable GasPass. Click the “Confirm” button to proceed.

3) If GasPass is applied, you will first need to sign the transaction to automatically pay the network fee with the coupon. Check the transaction details on your wallet and authenticate with your fingerprint or PIN.

4) You will then need to sign the transaction to send the coin. Please check the transaction details on your wallet and authenticate with your fingerprint or PIN.

5) Once the transaction data is sent to the blockchain, the mobile app will display the expected amount of tokens you will receive. Click the “Complete” button to return to the main screen.

How to Check Transaction History with GasPass Applied

Please refer to to learn how to check transaction history.

When a transaction is created with GasPass applied, the gas fee (network fee) is paid in advance to the blockchain using a coupon. Therefore, the transaction status will display “Preparing Gas.” In addition, the TXID will show the issued coupon ID (gascouponid).

Once the gas fee has been successfully paid with GasPass and the transaction is confirmed, the transaction status will update to “Confirmed.” The TXID will then be updated to the actual transaction ID.

How to Check GasPass Usage History

By clicking the “Usage History” button in the GasPass menu, you can view a detailed breakdown of gas fees deducted for each transaction.

MetaMask supports EVM-compatible blockchains (those that run smart contracts) and is widely used across various DApp platforms. In addition to its built-in accounts, MetaMask also supports a QR-based protocol for integrating with hardware wallets.

The D'CENT app utilizes this QR-based protocol to enable seamless integration between D'CENT accounts (EVM-compatible) and MetaMask.

Download and Install MetaMask

First, download the MetaMask Chrome extension from () and follow its instructions to install.

How to connect D’CENT Wallet with MetaMask

[Step 1] Preparing to connect with MetaMask in the D’CENT App

1) After running the D’CENT App, enter the "Discovery" tab.

2) Select "MetaMask Integration" from the list.

3) Check the consent box, then click the "Go to Service" button.

4) Click on "Select Account" button.

5) From the list, select the EVM-based account (e.g., Ethereum) you wish to connect.

6) After confirming that the QR code is generated, Proceed to [Step 2].

[Step 2] Connect the D'CENT Wallet by scanning the QR code on your computer

1) On the MetaMask main screen, click the "Account" button at the top center.

2) Select "Add Account or Hardware Wallet", then click "Add Hardware Wallet".

3) After selecting "QR-based", click the "Continue" button at the bottom.

4) It switches to the QR code scanning page.

5) Scan the QR code prepared in [Step 1] using the camera on your computer.

6) When the QR code scan is completed normally, it will be converted to the account selection page.

7) On the account selection page, select First account and click "Unlock".

(In the case of a D’CENT account, it doesn’t matter which account you choose because all the accounts shown in the QR scan list are the same.)

8) You can check the page where the account of the D’CENT wallet and the MetaMask are linked.

Example of how to send ETH using MetaMask

[Step 1] Create ETH transaction with MetaMask

1) On the MetaMask main screen, click the "Send" button.

2) Enter the recipient’s wallet address, then click "Continue" button.

3) Input the amount you wish to send, then click "Continue" button and review the transaction details. Click "Confirm" to proceed. (You can adjust the transaction fee limit by selecting the "Edit" option.)

4) The screen will switch to a QR code format for the signature request.

[Step 2] Create a signature for the transaction using the D’CENT App

There are two ways to scan the signature request QR code:

1) From D'CENT App, go to the "Discovery" tab and Click on "MetaMask Integration > Select account to sign (e.g., Ethereum) > QR Scan" button.

2) Alternatively, tap the "QR Scan" button in the top left corner of the "Discovery" tab.

3) When the QR scanning screen appears, scan the signature request QR code generated in [Step 1].

4) Verify the recipient address, then tap "Sign".

5) If you are using a biometric cold wallet, carefully review the displayed information once more. If everything is correct, press "OK", then enter your fingerprint or PIN.

6) If you are using an app wallet, enter the 6-digit password you set when you first launched the app.

7) After signing, you can check the signature in QR code format.

[Step 3] Sending signed data to MetaMask

1) Click the "Get Signature" button on the signature request page completed in [Step 1].

2) Scan the QR code prepared in [Step 2] using the camera on your computer.

3) Once the QR code scan is completed, go to the Activity tab in MetaMask to view the transaction details.

D'CENT Biometric Wallet

How to use D'CENT Wallet

D'CENT Card type Wallet

Basic environment setup

Recover Wallet

Firmware management

Find Bluetooth menu from the upper drag down menu

On your iPhone, Drag the notification bar at the top of the screen down to find the Bluetooth menu.

Find Bluetooth menu from the iPhone's settings

You can find the Bluetooth menu in the iPhone's settings

Check external package

Make sure the package Seal(Authenticity Sticker) is intact on both sides

How to solve issues relating to Bluetooth connection errors

For a seamless experience in connecting your phone with the hardware wallet, please check the following:

1) You have enabled Bluetooth on your Android Phone. Refer for how to access the Bluetooth menu.

2) Make sure you are using the Biometric Wallet mode

By connecting the Android Phone and OTG cable, you can synchronize with the Biometric Wallet via OTG cable instead of Bluetooth.

What is an OTG cable?

OTG stands for "On-The-Go" and refers to cable or adapter device that allow USB devices to connect to Android phones. Typically, one side connects to the mobile phone's charging port, while the other side is a standard USB port (USB Type A). Just connect the OTG cable to your Android phone.

Types of OTG devices

There are various types of OTG cables, such as Adapter type and Cable type, and there is a C to C cable type device that can be directly connected to the mobile phone and Biometric Wallet charging port without Adapter or Cable.

Please use an OTG cable that is compatible with your Android phone or Biometric Wallet charging port.

Using Biometric Wallet by connecting with an OTG cable

Launch the D'CENT mobile app

Please launch the D'CENT mobile app first. (Biometric Wallet mode) Below is a picture showing that there is no connection to with the Biometric Wallet.

Connect Android device and Biometric Wallet with OTG cable

Depending on the OTG cable you own, connect the Biometric Wallet and the Android device as shown in the picture below.

Allow USB access

1) When an OTG cable is connected, you will see the following pop-up. Press "OK".

2) When connection is made, Synchronization will begin with the Biometric Wallet and you can start using it when it finishes.

Firmware Update

You can update the firmware of Biometric Wallet from the mobile phone using an OTG cable.

Please refer to the user guide below for instructions on how to update the firmware using an OTG device.

When the Biometric Wallet and the Mobile App are connected, synchronization will start automatically.

Please refer to the following sections on how to connect the Biometric Wallet with the Mobile App.

Synchronization process

The purpose of synchronization is to hold the same correct information between the Biometric Wallet and the mobile app. Following processes will occur during the synchronization:

Verify previously synchronized information

Check whether there is a history of ever been synchronized with the Biometric Wallet. If there is no history, the synchronization process adds additional process of creating accounts by looking up the address information.

Synchronize account information

1) Search the account information of the Biometric Wallet and compare it with the account information registered in the mobile app. 2) Create an account that is not registered in the mobile app among the account information available from the Biometric Wallet. 3) If you have account information in the Biometric Wallet, the existing accounts will be retrieved even if you delete the mobile app and reinstall it.

Methods of sending coin is different depending on the wallet mode you currently use. Please refer to the different wallet modes below.

ERC20 token is a token used on Ethereum. On Ethereum, tokens can be issued in the form of smart contracts. Tokens that conform to the ERC20 standard among smart contracts are called ERC20 tokens. Currently, almost all tokens running on Ethereum follow the ERC20 standard. For a list of ERC20 tokens supported by D'CENT Wallet, refer to the following link. https://www.dcentwallet.com/en/supportedcoin

The ERC721 token is also called NFT (Non-fungible Token) and NFT is a non-replaceable token. While each ERC20 token has the same value, the ERC721 token has a unique value for each token. In other words, it is impossible for the NFT to replace one token with another. ERC20 is issued for functions similar to currency or points. On the other hand, ERC721 is used in cases where each token has a unique value, such as a game item.

Mobile App Download

You can download the D'CENT Mobile App by clicking on this link.

Mobile App basic setting

Select Wallet mode

If you are launching the mobile app for the first time, you will need to go through the initial setup and select a wallet mode.

When the app launches, select “Biometric Wallet” as shown below.

You can change the wallet mode at any time from the Settings tab in the mobile app. If you are using a biometric cold wallet, make sure to set the wallet mode to "Biometric" in the mobile app. For instructions on how to change the wallet mode, .

App Password Registration

To protect your D'CENT mobile app, you must set a 6-digit password. This app password will be required every time you launch the D'CENT mobile app, so be sure to remember it.

Mobile App Permission Settings

A permission request popup will appear when you launch the D’CENT mobile app. Review the permissions being requested, then click “Confirm” button to proceed.

Next, click the “Allow” button for both the Notification and Nearby Devices permissions to continue.

If the permission popup does not appear, or if you accidentally clicked the “Don’t allow” button, you can manually enable the Nearby Devices permission by following the steps shown below.

Bluetooth pairing with Cold Wallet

First, turn on the cold wallet, unlock using your fingerprint or PIN authentication.

You can connect your cold wallet to the D'CENT mobile app via Bluetooth using the following steps.

1) Open the D'CENT mobile app and select "Bluetooth icon" at the top of the "My Wallet" tab.

2) A "Search Device" popup will appear, displaying the Device ID(D'CENT-iD-<numbers or letters>) of the cold wallet.

Please refer to on how to check the device ID of your cold wallet.

3) When you tap the device ID, the cold wallet will sync automatically. It may take a few seconds for the synchronization to begin.

4) When synchronization is complete:

• A connection indicator will appear in the top of the mobile app.

• A blue Bluetooth connection light will stay turned on in the top right corner of the cold wallet.

Now, you can tap the "Add Account" button to add the necessary coin accounts. For detailed instructions on adding coin accounts, click .

How to Check the Device ID

Each biometric cold wallet has a unique device ID. You can check the device ID of each device using the following steps.

1) Turn on the cold wallet, authenticate using your fingerprint or PIN, then navigate to the "Settings" menu and press "OK" button.

2) Select the "Device Info." menu and press "OK" button.

3) On the Device Info screen, the Device ID(D'CENT-iD-<numbers or letters>) will be displayed

If you're having trouble connecting the cold wallet, please refer to the Troubleshooting Guide below.

Viewing all the BTC addresses

Bitcoin uses 15 public addresses, and when you create a BTC account in D'CENT wallet, 15 public addresses are automatically created. To see the full list of BTC public addresses, run the mobile app and do the following:

1) Press the "Receive" button on your BTC account. 2) Press the down arrow (∨) button to the right of “View all BITCOIN addresses”.

3) You can check all 15 public addresses. For your reference, the address shown on the "Receive" screen of your BTC account defaults to the first address in the list of 15 addresses.

Enter the receiver address and the Destination Tag

1) From mobile app, press the “Send” button of the Ripple (XRP) account to be used for the transaction.

2) Enter the wallet address of the other party (receiver) and enter the Destination Tag if you are sending XRP to an address that is created by an Exchange.

By clicking the Network (🌐) icon on the top right corner of the "Discovery" tab, you can change the account and blockchain network used in the DApp browser.

You can either select a different account that has already been added to the wallet from the list, or search and select the desired account and network using the search bar.

For the list of supported networks, please refer to here.

The more blockchain networks will be added to the supported list for D'CENT dapp browser.

With the mobile app update to version v5.3.1, accounts created for Kaia (KAIA), Ethereum Classic (ETC), and RSK (Rootstock) now generate with the same address as the Ethereum account.

Therefore, if you have been using the D'CENT app wallet or biometric wallet before this update, you will need to create a "Legacy" account after wallet recovery to access your previously held assets.

How to Add a "Legacy" Account

1) If the newly created account does not include "Legacy" in its name, proceed with adding the Legacy account.

2) Tap the "Add Account+" button, then select the account labeled "Legacy" from the list (e.g., Kaia Legacy).

3) Once the process is complete, an account with "Legacy" in its name will be created, allowing you to access your previously held assets.

4) If an account without "Legacy" is displayed, tap the "Hide Account" button to remove the newly created account.

SegWit stands for Segregated Witness and, is a method of separately storing the signature part of the transaction record in order to reduce the data size stored in the block.

At the time SegWit was proposed, there were too many bitcoin transaction, it caused higher transaction fee. It was very important to solve bitcoin's block size limitation. This proposal has been adopted,

Before adopting SegWit, the saturation of the bitcoin block size caused the transaction fee to continue to rise. A resolution to reduce the block size received greater attention than the security enhancement effect to prevent transaction volatility.

In Bitcoin blocks, signatures take up surprisingly large amount of data space. If you save the signature separately in the block, more transactions data can be included in the data space that was once previously occupied by the signature data. In SegWit block, digital signature is collected separately to save 1MB of data space in a block, this will allow adding more transactions into that data space.

With the introduction of SegWit, major networks have shortened the processing time of tasks and lowered the transaction fees.

What to do when the Biometric Wallet screen gets stuck during a firmware update

First, disconnect your D’CENT wallet from your computer.

Press and hold both the "Down (v)" button + "Power" button for few seconds to force the device to power off. If your device is "brick"ed during the firmware update, you can still access the bootloader mode by pressing and holding both "OK" button + "Power" button for 10 seconds.

From the bootloader mode, you can try updating the firmware to recover your Biometric Wallet.

What is a D'CENT Backup Card?

One of the key conveniences of the D'CENT All-in-One Wallet is its unique backup method. Rather than using a traditional mnemonic code, the private key is backed up using state-of-the-art encryption technology, which securely transfers the private key to a spare Backup Card. This method is both easy to use and highly secure, giving users peace of mind that their assets are protected.

The Backup Card is a hardware wallet with no data inside the secure chipset and it is used for creating the exact same clone of your All-in-One Wallet.

How to recover the backup image to a Backup Card

To recover a backup image, please have your Backup Card ready.

1) Click the More (⋮) button in the "Settings" tab.

This guide details the instructions for adding a custom path BTC account.

Add a Custom Path Account

1) Tap on "Settings" tab.

2) Scroll down and tap "Laboratory".

Accounts that have been created can be removed (hidden) from the "My Wallet" Tab by using the "Hide" function.

The Manage All Wallets menu allows you to easily manage all wallets registered in a single D’CENT mobile app.

In order to receive cryptocurrency assets, you must first create an account to check the address where you can receive them.

Enter the Receiver address

Enter the Receiver address

Enter the Receiver address

After sending or receiving a transfer to your wallet account address, you can check the transaction history from the mobile app.

How to check transaction history

1) In the D'CENT mobile app, tap the desired coin account to open the Account Details screen.

2) On the Account Details screen, you can view your coin balance and transaction history.

Ripple (XRP) account activation

If you have added your Ripple (XRP) wallet address for the first time, it is disabled. requires a purchase or transfer of Ripple of 1 XRP or higher to convert the Ripple wallet address to an activated state. Therefore, the corresponding 1 XRP will permanently lock-up at the corresponding wallet address. If a permanent lockup is made at the address of the Ripple wallet, it is assumed that only 99 XRP can be transferred, excluding the 1 XRP, which is the permanent lockup amount.

How to create an KAIA account

If you don't have Kaia account, create new account. Coin name for KAIA is "Kaia (KAIA)".

For more details of creating an account, click below link.

How to create an RSK account

If you don't have RSK account, create new account. Coin name for RSK is "RSK Smart Bitcoin(RBTC)".

For more details of creating an account, click below link.

How to create a Tron (TRX) account

If you don't have a Tron account, create a new account. The coin symbol name for Tron is "TRX".

For more details on how to create an account, click the link below.

When you have added a new Tron account in the D'CENT Wallet, this account do not exist on the Tron blockchain just yet. To use Tron account, you must first pay the account generation fee of 1 TRX as required by . Additionally, the Tron account needs to be activated