I'm Looking For A Better Password Solution - Blockchain Based?

[AAAnditsgone]

I've been thinking about this for a while and surely I'm not the only person with this problem. I've been writing passwords down on paper and keeping them in a secure location however in the event of a fire or if traveling, this becomes cumbersome. Has anyone heard of a blockchain based password keeper/journal. Would be great to just remember 1 password to access everything.