Do I have to encrypt my wallet?
• No you do not have to, but it is strongly recommended to encrypt your wallet.
• If anyone can access your unecrypted wallet.dat file, they can steal your coin.
Do I need to backup the wallet?
• yes, it is very important to backup your wallet frequently and save backup files to multiple locations. And also it is important to make multiple backup files.
• for example:
o name your backup wallet file to something like
html-wallet-backup-2017-12-30-0430pm.dat
html-wallet-backup-2017-12-31-0500pm.dat
html-wallet-backup-2018-01-01-0100am.dat
• Your wallet.dat can get corrupted due to multiple reasons and same to your backup files. That is why you want to make multiple backups like this and save them to multiple locations like this:
o backup to your usb stick - at least two of them
o backup to your hdd disk
o backup to your external hdd disk
o backup to cloud storage (not recommended unless you have encrypted your wallet.)
Why do I need to backup my wallet?
• It contains all of your private keys
• It is easy to restore your wallet to other computer or to your existing wallet when your wallet is corrupted or reinstalled and accidentally wiped your wallet.dat.
Can I open my same wallet.dat to multiple locations?
• yes you can, but it is not recommended because it can cause some unknown issues. You can open one for pure minotring purposes, but do this at your own risk.
How to import / export private keys?
• To export a private key from your qt client:
o launch your htmlcoin client as usual and wait for it to load the blockchain and start up
o click on 'help' in the menu bar (top right)
o click on 'debug window'
o select the 'console' tab
o type: walletpassphrase your-walletpassphrase-here 600
o type: dumpprivkey your-address-here
o this will return the private key, you can copy it now; ensure you clear your clipboard/history afterwards
o type: walletlock
o when dumpprivkey fails for no reason, restart your wallet and try again. this was tested

• To import a private key
o launch your htmlcoin client as usual and wait for it to load the blockchain and start up
o click on 'help' in the menu bar (top right)
o click on 'debug window'
o select the 'console' tab
o type: walletpassphrase your-walletpassphrase-here 600
o type: importprivkey privatekey
o type: walletlock
o when importprivkey fails for no reason, restart your wallet and try again.
also check to see if you mistakenly used the address instead of private key
How to restore wallet.dat?
• Close your wallet software
• You must find where your wallet.dat is located.
o For windows: it is usually under %APPDATA%\Roaming\HTMLCOIN\
o For Mac: it is usually under Library/Application Support/HTMLCOIN/
o For Lunux: wherever you installed.
• Rename your current wallet.dat to something like wallet-original.dat
• Copy your backup wallet data file to where the wallet-original.dat is at.
o DO NOT MOVE your backed up file. make sure to copy and paste.
• Rename your backup wallet data file to wallet.dat
• Start your wallet software.
Can I recover my coins if my wallet.dat is corrupted?
only way you can restore is either you have working backup wallet.dat or by importing your private keys to your newly installed wallet.