"Your passphrase is your wallet access and wallet backup," the CarbonWallet site states. "Determined bitcoin addresses mean no need for a remote server to hold keys and no need to store keys on a local hard drive."
However - the approach also means users must ensure they don't forget or lose their passphrases.
"Without the passphrase your coins are gone," CarbonWallet warns. "There is no way to retrieve CarbonWallet wallets without the passphrase."
The site recommends that users write down their passphrases and keep them stored someplace secure. It also warns that users need to be alert to potential attempts to steal their passphrases via phishing, social engineering, malware or brute force.
"According to "how big is your haystack?" (o)ur passphrases would take five-hundred trillion trillion trillion trillion trillion trillion trillion trillion centuries to break under a massive cracking scenario," the site states.
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