We provide a recovery function in case the wallet fails or the wallet is lost. You can restore the entire wallet using the 24 recovery words given when creating the wallet. For more details on wallet recovery, please click here.
The crypto asset itself is not stored in the hardware wallet. Private keys are stored in the hardware wallet, and only other information related to the account is managed. Crypto assets exist on the blockchain network, and the software application reads the information and displays the calculated balance.
It uses 24 recovery words to recreate the private key that the hardware device has stored in the past. The original crypto asset does not exist in the hardware wallet, but exists on the blockchain. The recovered key is used to retrieve the information of the existing cryptocurrency asset and display it in the mobile app. Click here to learn how to recover your wallet for fingerprint authentication type cold wallet.
The wallet's private key is generated by the security chip inside the hardware when the customer receives the hardware device and creates the wallet. The private key generated inside security chip is never exposed to the outside. For this reason, the customer's private key is also unknown to the manufacturer.
IoTrust does not operate a server that manages customer's private key and personal information. However, IoTrust does operate general management servers, such as firmware management servers and homepage servers, which are specifically for managing hardware firmware.
You can see the full list of all the coins supported: https://dcentwallet.com/SupportedCoin
D'CENT Biometric Wallet and mobile app connects primarily using Bluetooth. If you are using Android, please refer here. If you are using iPhone, please refer here. On Android phones, you can also connect via a USB cable. Click here for how to connect USB cable with an Android phone.
In the case of Bitcoin, it is recommended to change the address once it is used to protect a certain level of privacy because anyone can see the transaction details and balance when the address is exposed. This is proposed in the BIP-32 and BIP-44 specifications related to Bitcoin, and many hardware wallet companies support this function.
In the case of D'CENT, we provide a function that shows the list of used addresses from the mobile app to mitigate the discomfort of not knowing the previously used Bitcoin addresses. To find out how to check all your BTC public addresses, please click here.
Since the D'CENT mobile app maintains a transaction record for all addresses, there is no problem to continue using the bitcoin address before the change. For more information about bitcoin address, please click here.
When transferring Bitcoin, fragments(small amounts) of bitcoins from many blocks are collected and transmitted. If your Bitcoin balance is fragmented in too many blocks, it will take a lot of time to collect and to send them all. This isn't always the case, but the larger the number of Bitcoins you send, the more likely it will be to collected from multiple blocks, which will usually take more time. If a transaction takes too much time, it can have multiple side effects. Customers may think that the Wallet function has stopped working and it actually increases the chances of an error. For this reason, D'CENT provides a method for dividing and transmitting multiple transactions if the bitcoin account balance is highly fragmentation. For example, a large sum of single bitcoin transfer request may be divided into 2 transactions, thus the customer will confirm twice.
After the transfer, the remaining balance in your account must be at least 20 XRP.
Balance before remittance-(remittance amount + commission)> = 20 XRP.
Many exchanges require a Destination Tag when depositing XRP as an exchange. When sending money to an exchange, please make sure that the Destination Tag is required before sending money. If you do not fill in the Tag, your money may get lost forever or it may take a very long time for the Exchange to recover your fund.
In most cases, it is the case that you entered the address incorrectly or it takes a long time due to low transaction fee paid.
If you received a coin, please check it on the mobile app.
Try refreshing the account balances while remaining on the "Account" tab. Pull down the screen and release to refresh.
Try searching the address from Block Explorer and check if the SEND / RECEIVE was successful.
You can search for "bitcoin explorer", "ethereum explorer", or "XRP explorer" in the search engine.
D'CENT Biometric Wallet shows all supported coins.
The mobile app uses a method of adding an account, so please only add the account you actually use. If you added a lot of accounts for testing, you can delete all the account information by following the instruction as below.
To delete all accounts information on Biometric Wallet, go to [Setting] -> [Security] -> [Delete Account].
Re-add only the accounts you want to see from the mobile app.
With exception to the publicly disclosed transaction data from the blockchain, ALL important data is processed inside the security chip in the Biometric Wallet. Therefore, even if the data transmission in the Bluetooth communication is tracked, the assets inside the cold wallet cannot be hacked.
For Android phones, you can use it by connecting with an OTG cable. Please click here for more information.
Since the D'CENT Biometric Wallet does not have internet network function, it is necessary to communicate with external software to transfer coins. We recommend using the D'CENT mobile app.
D'CENT Wallet is a product made by top experts who have long worked in cryptographic chip and Secure OS development. Credit card, banking card, USIM card, TEE, etc. have been developed for nearly 20 years and D'CENT Wallet is developed using security techniques learnt in the field. The following is a brief introduction to security considerations.
Using smart card security chip (credit card and bank sector certified for security) for secure key storage and secure processing of transaction signing
Fingerprint algorithm is mounted on the smart card to process fingerprint information only within the security chip
Proprietary Secure OS
D'CENT Biometric Wallet has been subjected to security inspection by a third-party professionals in security auditing, and you can check the contents here.
Currently, only the PC environment supports firmware update. The firmware update from the mobile environment is under development in the long-term roadmap.
Firmware update usually takes around 5 minutes. It may take up to 10 minutes. If there is no progress after this time, please press and hold both the "Down button" + "Power button" to force shutdown and try again. Detailed guide can be found here.
Although highly unlike for D'CENT (IoTrust) to stop the wallet service, but if that situation ever happens, you will be able to continue managing your assets in the following ways.
Customers manage assets by transferring funds to another wallets other than D'CENT.
D'CENT will release the mobile app or software to the public for anyone to use or modify if the service is stopped.
We are continually promoting integration with other popular software wallets. Customers will be offered a variety of options to choose from among several alternatives.
The main information that allows managing your wallet are password, fingerprint, and recovery card. In case of emergency, you can manage it in the following way.
Share recovery words
If you have shared the recovery word with your family, your family can use them to recover the assets.
Enroll second fingerprint
You can enroll up to 2 fingerprints on the Biometric Wallet. If the second fingerprint is registered in the hardware, it can be used to unlock and access the funds inside.
Currently, there are no other wallets available other than the D'CENT mobile app. Since we are working with several software wallets, using D'CENT hardware with other wallets are not far away.
We will announce it separately when the work is completed.
Since each wallet is a separate wallet, they all use different keys. Assuming that you are using the mobile app in all 3 different modes, then you are using 3 different wallets with different private keys.
Currently, the Card type Wallet does not have a backup function. When initially designing the Card type Wallet, the product was developed under the thought of delivering similar experience of using a gift card. However, customers are requesting a backup function, so we are currently developing a backup card.
If you use a backup card, you can create a copy of the original Card type Wallet and use it. If you use multiple backup cards, you can also create more than one copy.
For iPhone 7 or higher and iOS 13 or higher, you can use the Card type Wallet. You can find out more here.