My plan is to construct a 2 of 4 backup.
- One paper in my house
- Second one as a digital file, encrypted with TrueCrypt and uploaded to Google Drive (protected by 2FA)
- Third paper with my parents
- Fourth paper attached to my last will
With this scheme I am always able to reconstruct my own wallets without external help, although it's still very hard for anyone to get their hands on more than one backup. I am protected from a fire destroying my house and my family can access my funds in case I die.
Copies of the last will kept where?
That depends on whether I'm able to get them attached to my last will. If so, they will be stored in the Centraal Testamentregister, a national database in the Netherlands containing every last will. If not, they will be stored at the notary's office in a safe. In any case, a last will is protected by law to be a private document.