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Cyber Bitcoin
Edited by qqqpeter at 2019-3-28 11:15

There are many risk factors in cryptocurrency storage. There are potential hackers on the local computer that exploit the vulnerability, or the hard disk is damaged, or accidentally deleted or the hard disk is lost. There is an exchange where the exchange is bankrupt or shut down or hacked. There is a web wallet, and there are many possibilities for the website to be closed. The main purpose of a hacker attack is to obtain the private key of the wallet. As long as the private key is obtained, the hacker has full control of the wallet and can transfer all of your digital assets. There are many precedents for these things that are stolen and stolen. An offline hardware wallet can avoid these dangers.

A qualified hardware wallet needs to meet the following requirements:

✜ Security: The key to security is in the hands of the owner
✜ Convenient and practical: storage, transfer and payment operations are convenient and simple
✜ Highly expandable: upgradeable and support new currency in the future
✜ Privacy protection: the appearance is low-key and not unassuming, it will not be seen at a glance as a digital currency wallet

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On January 10, 2019, the blockchain asset hardware wallet company, Coldlar launched a new product - ColdLar Touch card hardware wallet. How is it working? How to securely store blockchain assets? What "black technology" is involved? Let's reveal it together!

First of all, let's not talk about too many technical parameters. Let's go straight to use it and go further. Of course, we must first have a mobile phone with NFC function. Secondly, you have to have a ColdLar Touch card wallet. The most important thing is to Have a digital currency.

Turn on phone NFC settings

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Download the library god app and install it to your phone

Scan the QR code and download the library god App△ directly

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Installation interface

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Operation interface introduction

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Create a wallet

Coldlar App has three application scenarios for ColdLar Touch

✜ Create a new wallet with ColdLar Touch
✜ Bind ColdLar Touch card wallet with mnemonic from other wallets
✜ Bind an existing ColdLar Touch card wallet with your new phone

Create a new wallet with ColdLar Touch

Open the Coldlar App, click the NFC logo in the upper left corner, and the “Touch the card and the phone” prompt will appear. At this time, the ColdLar Touch will be placed on the back of the phone, and the App will automatically recognize whether the card type is a standard card or a new spring customized version.

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Select "Create Wallet", enter the settings menu, you first need to set the wallet name, so as not to confuse multiple wallets, set a secure password, and then backup wallet mnemonic ▽

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In the backup wallet mnemonic section, the manufacturer emphasized the importance of mnemonics, focusing on setting a security reminder: Do not use screenshots to save and ensure that there are no others or monitoring devices around. At the same time, the App also shields the screenshot function of the mobile phone. It is recommended to use the paper material to record and save the mnemonic.

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A total of 12 mnemonics can be saved in English, numbers, or Chinese. After saving, click “Next” to verify. Select the phrase according to the order of the backup mnemonics. The order will appear after the order is correct. The “Touch the card and the phone” prompt, put the ColdLar Touch on the back of the phone, and the App and ColdLar Touch read the message and complete the wallet creation▽

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Import and bind ColdLar Touch card wallet with mnemonics

If the backup has other wallet mnemonics, you can use the mnemonic to import other wallets into the ColdLar Touch wallet, open the ColdLar App, click the NFC logo in the upper left corner, and the message “Touch the card and mobile phone” will appear. At this time, the ColdLar Touch is placed on the back of the phone, and the app will automatically recognize whether the card type is a standard card or a new spring customized version. Select “Restore Wallet” to enter the recovery word input interface, enter 12 mnemonics and then give the wallet a name, set a security password to enter the next step▽

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The prompt “Touch the card and mobile phone...” appears. At this time, the ColdLar Touch is placed on the back of the phone, and the App and ColdLar Touch read the message and complete the wallet recovery.

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Bind an existing ColdLar Touch card wallet with your new phone

When the App is accidentally deleted or the phone is lost, don't worry, your digital assets will not be lost. You can re-bind the ColdLar Touch card wallet by installing a new ColdLar app.

1. Open the installed library god App and click the NFC logo in the upper left corner.
2, mobile phone and ColdLar Touch card wallet to read information
3. Enter the security password of the existing ColdLar Touch card wallet.

Complete the binding, of course, the ColdLar App also supports the binding other ColdLar hardware wallet▽

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Digital assets can be managed after creating the ColdLar Touch wallet through the above three scenarios.

Experience wallet

Receive Bitcoin with the ColdLar Touch Cardet Wallet Experience

1. Click "BTC" on the homepage.
2. Click "Receive"
3. Copy or share the receiving BTC address to the other party.

Receiving digital currency does not require ColdLar Touch to participate, as long as the address is shared with the other party, the other party can send it, just confirm that the transaction takes a few minutes▽

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After receiving the currency, you can click on the transaction to view more detailed information such as transaction ID, time, block confirmation, etc., or you can view it through the block browser.

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Send Bitcoin experience with ColdLar Touch wallet

1. Click "BTC" on the homepage.
2. Click "Send" to enter the sending interface.
3. Fill in the payee address or obtain the address by scanning
4, enter the payment amount
5, modify the miner fee, the system default miner fee is about 5 yuan, you can click on the "advanced option" under the miner fee to modify the miner's fee, you can adjust the miner's fee to the bottom of about 1 minute, of course, the package confirmation time will be based on The cost is different and produces different delays.
6, mobile phone and ColdLar Touch card wallet to read information
7, enter the security password
8, send bitcoin, complete

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Technical Parameters

Through the operation experience of the above links, it can be seen that the role of the ColdLar Touch card wallet is to confirm the transmission of information, and the whole operation is quite convenient compared to other hardware wallet experiences. The following sections provide some analysis on the technical aspects of security, convenience and expansion.

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What does the ColdLar Touch Cardet Wallet rely on to secure digital currency?


The ColdLar Touch card wallet is a kind of hardware cold wallet. It adopts the Hierarchical Deterministic (HD) technology scheme. After the user randomly generates the mnemonic, the ColdLar Touch will correspond to the private key of different currencies. And a secure password, securely stored on a built-in CC EAL6+ security chip. The chip's encryption protection level reaches the military level, completely isolating the network, completely eliminating the risk of the private key being stolen by network hackers. Without the signature confirmation of the ColdLar Touch card hardware wallet, digital currency transfer and payment operations will not be possible, and the card wallet is completely isolated from the network, preventing the risk of the private key being stolen by the network hacker. The backup of the wallet, the modification of the password, the reset of the card, the card wallet signature confirmation.

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Where is the convenience of the ColdLar Touch card wallet?

The ColdLar Touch card-style hardware wallet is small, portable and practical, weighing just 6g and thickness 0.88mm. The size is the same as the physical bank card and can be placed in a purse, a ticket holder or the like. The ColdLar Touch card-style hardware wallet does not have a built-in battery. When the card wallet and the mobile phone transmit data, the mobile phone provides the power required for the chip operation through the electromagnetic field, which greatly reduces the complexity of the card result and increases the overall durability of the card-type hardware wallet.

ColdLar Touch card wallet uses NFC technology to make the hot and cold end of the transaction process more convenient, and the transaction capacity is no longer limited by the traditional cold wallet QR code. It only takes 0.1 seconds to complete the signature and will trade. Broadcast to the blockchain network, the speed has achieved "extreme speed." It satisfies two aspects of the use of hardware wallets: easy to carry storage and convenient and secure transmission and reception.

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What are the scalability of ColdLar Touch card wallet?

The ColdLar Touch card-based hardware wallet is well-developed and supports Bitcoin, Ethereum, and all ERC20-TOKEN. In the future, it can also support more currencies by upgrading the library.

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How to protect the privacy of ColdLar Touch card wallet?

One advantage of ColdLar Touch is its support for customization. Imagine a scenario where if you customize the ColdLar Touch card wallet into multiple bus cards, room cards, loyalty cards or other cards, you can store the digital currency separately, some wallets carry it with you, low-key and unobtrusive, and safely hide you. Digital assets.

Standard Edition ColdLar Touch

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New Year Custom Edition ColdLar Touch

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Summary:

The ColdLar Touch card wallet is ideal for those who need to make frequent money transfer operations. The ColdLar Touch is a combination of hot and cold wallets in operation. It is more convenient to use than a completely offline cold wallet. Just set it on the app. Transfer and payment information, and then cold-end communication with the ColdLar Touch card wallet to confirm the signature can be completed. The digital asset and transaction information can also be viewed at any time through the Coldlar App hot end, and the cold end communication signature confirmation adds a security guarantee to the hot wallet.

The ColdLar Touch Cassette is affordable, and you can customize to purchase multiple ColdLar Touch to store your digital assets separately.

In some scenarios, you can give ColdLar Touch directly to others without transferring money to transfer digital money to others.

In general, the ColdLar Touch card wallet is the most convenient digital currency hardware wallet that we have experienced.

❖ You can buy a ColdLar Touch card wallet at Cybtc self-operated mall

Related Reading:

Cybtc Review: Coldlar Wallet Pro 3

Introduction to NFC and CC EAL6+ standard technology used by the Kurdish ColdLar Touch card wallet:

Near-field communication (NFC)

NFC, also known as near-field communication or near-field communication, is a communication protocol. Near-field communication is a short-range high-frequency radio technology that allows two electronic devices (one of which is usually a mobile device, such as a smartphone) to be separated. Communicate within a few centimeters. Often NFC is widely used in mobile payments, sharing contacts, photos, videos or documents, and acting as an electronic ID card and key card.

The phone is responsive when the ColdLar Touch card wallet is placed on the back of the phone

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The phone is not responding when the ColdLar Touch card wallet is placed on the front of the phone

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Introduction to CC standards:

The CC standard is a safety assessment standard for information security products and systems. It is used to evaluate the security of information systems and information products. It is the result of the efforts of the International Organization for Standardization to unify the existing assessment criteria. It is also the most authoritative and Rigorous safety certification standards.

The evaluation of the CC standard is divided into two aspects: security function requirements and security assurance requirements.

The International Organization for Standardization divides the CC evaluation level from low to high into seven levels of EAL 1-7. CC EAL6+ refers to the enhanced level of CC EAL 6. In general, the safety requirements for commercial products are within CC EAL 5, and the masses in life The commonly used bank chip debit cards require CC EAL5+ certification, and higher encryption levels such as CC EAL6 and CC EAL7 are military grade.

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