Sentinel: Storing your Bitcoin offline - YouTube

Hello my name is BB2K, and in this video I'll be showing you how to create a

Bitcoin mobile cold storage with segwit enabled, keeping your bitcoins

in a cold storage means your private keys or the mnemonics that you use are

kept offline. The purpose of keeping your bitcoins offline is to protect your

private keys or mnemonics from being stored on a device which could be easily

compromised. For this we will need a computer which has internet connection

and offline device such as a laptop which will not be used for connecting to

the internet, a USB memory stick for transferring data from the online to the

offline computer and an Android mobile phone with Sentinel installed

Heading over to our computer with internet connection, open up your favorite browser

navigated to the web page https://iancoleman.io/bip39/

this webpage is a BIP39 tool a tool for converting BIP39 mnemonic phrases to

addresses and private keys save the web page to our USB memory stick remove the

USB device and plug it in into UD offline laptop as well as being offline

make sure you are not surrounded by people who could be potentially

overlooking your shoulder transfer the web page from our flash drive to the

offline device the reason for doing this offline is to prevent sensitive

information such as your mnemonics and private keys from leaking onto the

internet open the web page file to launch the pneumonic code generator once

launched the first thing to check for is the fifth option for coin make sure PTC

Bitcoin is selected before we begin generating our first set of mnemonics we

have the options to choose the number of words to generate we can generate a

recovery phrase as few as three words and up to 24 words for convenience

I'll pick twelve word for this demo once you have generated your mnemonics

for your wallet please write it down and keep these words safe if you lose your

private key you will lose access to your Bitcoin next part is the optional

passphrase here you can enter a password or passphrase of your own choosing

similar to mnemonics in order to access your Bitcoin you will need both T

recovery mnemonics and recovery passphrase missing any one of these or

any error could result in the loss of your Bitcoin after we have obtained our

set of mnemonics scroll down to the next section which is the derivation path by

default the Legacy VIP 44 is selected make sure to pick VIP 49 for your secwet

speed corn wallets the advantage of spending bitcoins of Secrets is cheaper

transaction fee and protection from a transaction malleability scrolling down

the webpage just a bit more you will arrive at the accounts extended public

key section clicking on the text box will bring up this QR code equivalent

right-click on a QR code save the image to your local machine open the image for

the QR code separately instead of scanning directly from the webpage

reason for that is when we scan it with a mobile phone we do not want our mobile

device to see sensitive information such as our private keys

next launch the Sentinel application from our Android device Sentinel is an

Android application which allows you to receive payment into your offline wallet

Kapaun starts to begin select the secretary Cohen wallet select scan then

scan the QR code on the computer give your wallet

an appropriate label after successful wallets input click on the Add button

and select deposit if we have back to our VIP 39 and web page we can see that

the first derived address matches with the adjust generated on the mobile

wallet we can do this a few more times to ensure that derived addresses matches

with the addresses on the mobile phone and congratulations you have just

created yourself a mobile Bitcoin code storage you can now use your sentinel

wallet to receive Bitcoin payment without worrying about your private keys

I hope this video has been helpful see you in the next one