Print the encrypted ASCII-armored seed on paper twice.
These pieces of paper will now be called seed1
Write instructions on paper. This piece of paper will
be called instructions. These instructions are:
To open the box in case of your death
How to create a system from which it is
possible to decrypt the encrypted seed
How to decrypt the seed
How to use the seed in a cold storage system
Put seed1 and instructions in the box.
Put password1 and a message to open the box in an envelope.
Store password2 somewhere secure, but not together with
the box. Somewhere offsite, like a safe deposit box.
Store seed2 also somewhere secure, preferably off-site, for
example another safe deposit box.
Give the envelope to the relative who you want to be the
heir of your bitcoins and tell them to only open it after
Write your will and state that you want that person to be the
heir of the box with the giant yellow flower.
If you on a later date change how you store your bitcoins, you can do so.
Just update the instructions and encrypt the new seed/private key with
the same passphrase.
Here is an example, just to give you an idea how this would look.
The seed is:
awful judge jar dizzy ship advice spawn beef false time cute chapter
The password is:
And the resulting ASCII-armored encrypted seed is a text-file containing
this. I also manually added an example-line containing all characters
above the actual data, to make it easier to distinguish between O‘s as
in „Oscar“ and 0‘s as in Zero and other easily confused characters: