注册比特币钱包，主要有两种情况：

　　一、已经知道了某个比特币钱包，比如说币包钱包，对其比较认可，直接进入该钱包的网方网站、或者下载手机App，直接进入平台注册。

　　二、在网络上直接搜索比特币钱包，进入相关平台进行注册。
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　　一般来说，现在的比较币钱包可以用手机号注册（或者邮箱注册）；出于对用户帐户安全的考虑，在进入后台帐户后，要求个人进行实名认证，同时个人手机号绑定，以免出现帐号异常、密码丢失等情况。

　　通过安全的加密技术存储lottery and How to find it ，只需要有个合约地址就可以转币，这个钱包的作用，可以让你在不用币的时候，将币放在钱包里，比在交易所的安全系数要高些。

　　钱包其实是作为一个地址协议，因为区块链上所有的交易都是全网记录的，每一枚比特币交易到一个地址都是全网记录不可篡改以此来记录，比特币到你钱包的时候每一个人都可以看到记录以此证明。

　　Unlike most traditional currencies, Bitcoin is a lottery and How to find it. Therefore, the method of this currency is completely different, especially in terms of obtaining and storing it. Since Bitcoin does not exist in any physical form or shape, it is technically impossible to store it anywhere. Instead, it is the private key used to access your public Bitcoin address and sign transactions that need to be securely stored. The combination of the recipient’s public key and private key makes Bitcoin transactions possible.

　　There are several different forms of Bitcoin wallets that can meet different needs and differ in terms of security, convenience, and accessibility.

　　Paper wallet

　　A paper wallet is essentially a document that contains the public address and private key that can be used to receive Bitcoin, allowing you to spend or transfer Bitcoin stored at that address. These are usually printed in the form of QR codes so that you can quickly scan them and add the keys to a software wallet for transactions.

　　Services such as BitAddress or Bitcoinpaperwallet can be used to generate paper wallets, allowing users to create completely random Bitcoin addresses and private keys. Then, the generated documents can be printed; some services offer anti-tampering designs, and holographic labels can be ordered and used.

　　The main advantage of a paper wallet is that the keys are not stored in any digital form, making it completely immune to hacker attacks, malware that records keystrokes, and basically any form of digital theft. However, some precautions still need to be taken when creating the wallet.

　　Obviously, before generating a paper wallet, you need to ensure that no one is watching you do so. To exclude any risk of spyware monitoring activities, it is recommended to use a clean operating system such as Ubuntu that runs from a USB flash drive or DVD.

　　Furthermore, once the paper wallet is set up, the website code should be able to run offline, allowing you to disconnect from the Internet before generating the keys. Finally, use a printer that is not connected to the network.

　　It is very important to understand that you are printing valuable private information on a piece of paper. Therefore, you need to take certain measures to protect that paper. For example, it is recommended to place it in a sealed plastic bag to prevent water, dampness, and general wear and tear. Some people prefer to laminate and store it in a safe, storage box, or entrust a lawyer to handle it.

　　Physical Bitcoin

　　Physical Bitcoin is usually preloaded with a fixed amount of BTC and is intended to be spendable only if the private key remains hidden. This is typically achieved through the implementation of anti-tampering seals.

　　Bitbill’s first product is like a credit card, but most of its subsequent alternatives have been shaped into a circular medal. Mike Cadwell, known as ‘Casascius’, is an encryption currency enthusiast who created the first popular Casascius physical Bitcoin in 2011.

　　The private key is hidden under a removable hologram, leaving an anti-tampering pattern when it is removed. When exchanging, the coin loses its digital value. Since then, several new coin manufacturers have emerged.

　　Physical Bitcoin is a very convenient way to store your funds more securely, especially useful for offline transactions. Most importantly, they have recently become valuable collectibles. However, the main drawback is the serious security issues.

　　In November 2013, Mike Cadwell was ordered to stop operating the Financial Crimes Enforcement Network because his work was considered to be a money transmitter. The regulations for this activity were too burdensome, so he had to stop selling items containing digital Bitcoin. Since BTC is still a legal gray area in many countries, these items may even be considered counterfeit by authorities.

　　Mobile

　　For those who actively use Bitcoin every day, to pay for goods in stores or to trade face-to-face, the mobile wallet BTC is an indispensable tool. It runs as an application on a smartphone, stores your private key, and allows you to pay for things directly from your phone.

　　In addition, some applications enable users to use their smartphone’s near-field communication feature, which means they can simply tap their phone against a reader without having to provide any information at all.

　　Any complete Bitcoin client needs to access the entire blockchain ledger, which is constantly growing and requires several terabytes of storage space. Therefore, mobile wallets utilize Simplified Payment Verification (SPV) technologyonline casino method and The latest method. They are only suitable for a very small subset of the blockchain, relying on trusted nodes within the Bitcoin network to ensure they have the correct information.

　　Although Bitcoin storage is a convenient mobile solution, mobile wallets are easily susceptible to hacker attacks. In addition, if someone just accesses your mobile device, you may lose control over the wallet. There are a variety of Bitcoin wallet applications available for devices running Android. Apple banned Bitcoin wallets from the AppStore in February 2014, but revoked its decision a few months later.

　　Web wallet

　　Web wallets store your private key on the servers of the company providing such services. The servers are always online and controlled by others. Different services provide different functions, some of which connect to mobile and desktop wallets to replicate your address on the device you own.

　　Similar to mobile wallets, electronic wallets allow users to access their funds from any device connected to the internet, anywhere at any time. However, unless implemented correctly, the organization operating the website may access your private key, thereby gaining complete control over your funds. In addition, some electronic wallets operate on the basis of exchanges, and some exchanges close and flee the funds of users.

　　Desktop wallets

　　Desktop wallets have been downloaded and installed on your computer, storing your private keys on the hard drive. By definition, they are safer than online and mobile wallets because they do not rely on third parties to obtain data and are harder to steal. They are still connected to the internet, which makes them inherently unsafe. However, for those who trade a small amount of Bitcoin from their computers, desktop wallets are a good solution.

　　There are many different options for desktop wallets to meet different needs. Some focus on security, while others focus on anonymity, etc.

　　Hardware

　　A hardware wallet is a relatively unique Bitcoin wallet that can store users’ private keys in a secure hardware device. This is the safest way to store any amount of Bitcoin, with no verified incidents of funds being stolen from hardware wallets.

　　Unlike paper wallets, which must be imported into software at some point, hardware wallets can be used safely and interactively. In addition, they are not affected by computer viruses, and the funds stored cannot be transmitted out of the device in plain text, and in most cases, their software is open source.

　　Some hardware wallets even have screens, which add another layer of security because they can be used to verify and display important wallet details. For example, the screen can be used to generate a recovery phrase and confirm the amount and address of the payment you want to make. Therefore, as long as you invest in a real device with a good reputation manufactured by a trustworthy and competent manufacturer, your funds will be safe and reliable.

　　Bitcoin wallet and security

　　Possible problems:

　　Capture malware. Malware can scan your disk and find your private key. Within a few seconds, all your Bitcoin can disappear. Trojan can encrypt all files on the hard drive. After that, it may find all the links to your wallet, realize how much money you have, and demand a specific amount of Bitcoin to decrypt your hard drive.

　　Virtual exchanges can run away with your money. You may lose the laptop or smartphone on which the wallet is installed.

　　Suggestion:

　　Avoid using any wallets that require an internet connection; please switch to cold storage options.

　　Be cautious and check everything carefully. For example, you may receive an email from BlockWallet, but it is actually from BlokcWallet, and if you authorize it, your Bitcoin will disappear immediately.

　　If you are not familiar with blockchain and do not understand the most basic concepts such as public key and private key, owning a wallet for newbies in the crypto circle is like poking a crocodile’s head with your finger, with extremely high risks. This article is dedicated to new friends in the crypto circle, helping everyone sort out the basic knowledge of Bitcoin wallets.

　　The Blockchain Observation Network mentioned in the article ‘What is Blockchain’ that in the world of blockchain, everyone possesses two unique virtual keys: the public key and the private key.

　　”Public key” can be simply understood as a bank card, which can be sent to the trading counterparty to see, and the bank card number is equivalent to the ‘address’ used in Bitcoin transfers.

　　To put it more professionally, a public key is a 65-byte string, how long is that? 130 letters and numbers piled together. If the public key is too long, it will be a hassle to make the first transaction, and secondly, why do you have to expose the real content of the public key, which is like showing your bank card to everyone. Therefore, the address we see now is a shorter public key generated by the hash algorithm.

　　Only when the other party knows your address can they send you money; and anyone who has your address can check on the Blockchain.info official website how many times this wallet address has been traded (No. Transactions), how many Bitcoin have been received (Total Received), and how many Bitcoin are left in the wallet (Final Balance), as shown in the figure below:

　　”Private key” is like a bank password that you must never tell anyone. It is a sequence of 256 random numbers. Because it is especially inhumane to ask non-IT users to remember this screen full of 0s and 1s binary private key, so this long sequence of private keys has been processed, and finally, the private key is presented to us in the form of a string starting with 5/ K/ L.

　　The relationship between public key, private key, and address is:

　　1) Private key → Public key → Address

　　The private key generates a unique corresponding public key, and the public key then generates a unique corresponding address;

　　2) Private key encryption, public key decryption

　　That is to say, A uses the private key to encrypt the transaction information (digital signature), and B uses A’s public key to decrypt this digital signature.

　　Among them, the private key is an extremely private thing. If you send your private key to someone else, you might as well start writing a long novel now, and I’ve even thought of the title for you, which is ‘Farewell, Bitcoin’.

　　If it is a big shot in the cryptocurrency circle like Teacher Li Xiaolai (rumored to own tens of thousands of BTC), it is strongly recommended to use a cold wallet (offline wallet) and store them separately; the wealthy on TV have their own safe deposit boxes in banks, and if possible, you can also refer to this.

　　At that time, the aforementioned method was the safest approach. However, as the successor to the ‘sheep’, let’s assume that at first we only use idle funds and hold a small amount of Bitcoin, for example, less than 5. Then, the cost of a cold wallet, which is complex to operate, is a bit like using a bullwhip on a chicken; therefore, Blockchain Observation Network limited the scope of choice to two: the exchange and the lightweight wallet.

　　Purchased a small amount of Bitcoin on a trading platform and can leave it there without withdrawing it, continuing to exist in the exchange. This method is most suitable for beginners in the cryptocurrency circle. Before we have a deep understanding of the stories behind each cryptocurrency, we are always full of curiosity, and the Bitcoin placed in the exchange can be directly used for peer-to-peer trading, which is simple and quick, without the need to transfer through a digital wallet; on the other hand, the platform has a complete range of currencies, which can satisfy our desire to try new things and is convenient for us to test the waters at any time.

　　而且像火币、币安（已被墙）这些大型交易所，不仅安全等级比某些专为收割韭菜而生的小平台高很多，而且操作简单，很快就能上手，只需保管好自己的账号、密码就行了（再安全一级的话，开启谷歌二次验证），其他的就交给平台。

　　值得注意的是，存在交易所上的资产并不完全属于自己，更确切地说是借给平台的，我们在资产那一栏看到的数字，相当于平台向我们借钱而打的白条。此外，交易平台本身不是去中心化的，如果安全措施不到位，用户的账号密码有可能被黑客拿到。

　　轻钱包是相对于“全节点”钱包来说的。

　　全节点钱包，比如 Bitcoin-Core（核心钱包），运行时需要同步所有区块链数据，占用相当大内存空间（目前至少50GB以上），完全去中心化；

　　轻钱包虽然也依赖比特币网络上其他全节点，但其仅仅同步跟自己有关的交易数据，基本实现去中心化的同时，也提升了用户体验。
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　　根据不同的设备类型，我们把轻钱包分为：

　　1）PC钱包：适用于电脑桌面操作系统（如Windows／MacOS／Linus）；

　　2）手机钱包：适用于安卓、iOS智能手机，比如比太钱包（以太也有PC端）；

　　3）网页钱包：通过浏览器访问，比如上文提过的blockchain网页版。

　　轻钱包操作比较简单，一般是免费获取。申请钱包的时候，系统会生成一个私钥。准备敲黑板！

　　1）不要截图、拍照存在手机里；

　　2）不要把私钥信息发给任何人；

　　3）最好手写（几份）抄下，藏在你觉得最安全的地方。

　　总之一句话，谁掌握了钱包的私钥，谁就拥有钱包的绝对控制权。私钥只要掌握在你的手里，比特币就绝不会丢。

　　最后多说几句，作为普通投资者，我们需要做的并不多：

　　1）走点心，不要把手机弄丢了，毕竟丢了对手机里的比特币钱包有风险；

　　2）不要手痒删掉设备上的钱包应用，除非你决定再也不用这个钱包了，否则后期很麻烦；

　　3）设置复杂的密码（原因见第1点），并用心去记牢，这是私钥弄丢以后留的一手。

　　对于记不住密码，又懒得科学备份私钥的朋友，咱还是把钱存在银行里吧。

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