##Cold vs Hot wallets
Hot wallets are connected to the internet while cold wallets are not. Hence hot wallets are vulnerable to theft .Yet indispensable for day to day transactions .
Cold wallets have different types could be hardware or paper wallet or an application installed on mobile or pc . As long as something is connected to the internet, it is vulnerable to attack . Creating a wallet require a software installation and some tampered wallets can contain trojans, backdoors and malicious code .
Hardware wallets are more secure yet they still require an internet connection for setup. [trezor](https://trezor.io/) is my choice they have the best ui, security, team and implementation .
A paper wallet is an offline mechanism for storing [bitcoins](https://www.investopedia.com/terms/b/bitcoin.asp).
Most Bitcoin users generate paper wallets using open-source wallet generator, such as BitAddress.org, BitcoinpaperWallet.com, and WalletGenerator.net . Those website use javascript in the browser to generate the private public key , although you need to delete your browser history and disconnect the world wide web it can be exposed to many type of vulnerability in the browser in javascript or in the website itself .
For that i have decided to write a small tutorial to generate you **paper wallet** offline using a crystal clear source code .We will not generate a hierarchical deterministic wallet (hd) we will just generate one btc address and its key.
This form of 'cold storage' confers enormous security advantages.
## Spoiler Alert
Most Paper wallet users Import the private key to a software wallet send the transaction and destroy it by uninstalling the wallet . **ALERT** The majority of those wallet generate another address and send to it the remaining amount which mean the initial paper wallet will be empty. For a best practice you need to generate an a new address and transfer the change to a new paper wallet .
##Code mask on
###Key Analogy
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### creating the wallet