@CoinImpulse Write your phrase digitally like in text document or a photo then compress it with winrar using a password that you will not forget. Then you can take it with you physically on usb stick or send it to yourself in e-mail.
@LouFrance75 Hard to put a price on a painting that doesn't exist anymore. Maybe use its last auction price adjusted for inflation and multiplied by 3 just to be sure. Then if they can't pay it put them in work camp prison at minimum wage until it's paid.