^ What am I going to do exactly with those dollars when dead?
I have heirs. Even if you don't have any, you'd probably like to be buried and have everything taken care of, so there are "death plans" for that purpose. A small "token" life insurance plan assigning a close friend to be beneficiary and a "dead man's switch" email saying "here, you get $100k when i died, please bury my body somewhere, or cremate it, ble bleh and keep the change."
Think: "What would a Pharaoh do?"
Edit: This would also be a good time to do the cyronics thing. If you have nothing to lose, why the fuck not? Just get the following tattoed on your forehead and put on your tank:
Hello!
In my brain is the seed code to 1 bitcoin.
Revive me and it is yours.
When 1btc is enough to buy a planet you can be SURE that people will do anything to get your mind back. Then go and withdraw your other 100 BTC and be a God in the future.
Pharaohs are mean. They killed everyone when they died. (Or everyone willingly got sacrificed for their great leader, thinking they will all accompany him to the next life.)
If you get revived, it might be possible you forget the seed code. Still, not a bad idea. You might have to spend a few corns today to get stored in deep freeze cryo cold storage... I think that's what Hal did.
If you did get revived, you should be able to remember something short and secure like an email password kind of thing. Your 12-24 word seed can be semi-private / semi-public (engraved or stamped on metal) with 0.0001 BTC in it, but you have an additional passphrase to the 1 BTC or 10 BTC stored in it. And another one with the rest of your stash.
Also depends on how you died, and if you can still be actually be revived.
For "proof", you can publish the address that contains 1 BTC. Anyone can look at any block explorer and see "hey, this dead guy is for real, wake him up damnit."
With only 100 BTC, you'll be very okay in the future, but you won't be a god. Remember, there are other gigachads who never died and have thousands of BTC, not to mention maybe the corporations that never sold are now masters of the other planets or something.
you: What year is it?
mad scientist that woke you up: oh, it's about a few thousand years since you died, does the year matter? gimme my 1 bitcoin, it's worth $100 billion today. Enough for me to buy a week's worth of bread. After you, I have a bunch of dead bitcoiners to wake up too, you're the 200th one, don't worry.