I have read the Bitcoin whitepaper. I have read it twice. I bring this up at dinner parties, some of which I was invited to. So when my wife asks what happens to our savings if I'm gone, I tell her the truth: she'll figure it out.

People worry far too much about "estate planning." Estate planning is for people who don't understand their assets. I understand mine completely. I can explain the difficulty adjustment using only a salt shaker and a confident tone.

Is the seed phrase written down? In a sense. It is written, very clearly, in my memory — where it is safe from burglars, hackers, and, admittedly, my family.

My wife does not know what a seed phrase is. This is fine. She also does not know how the car's transmission works, and she drives it daily. Competence, I have decided, is contagious.

My eldest is eleven and very sharp. When the time comes, he will simply Google it. The internet, I am told, has everything.

Some have suggested I "write things down" or "tell someone." To them I say: the whitepaper is nine pages. If they truly cared, they would read it.

I have considered, briefly, that understanding Bitcoin and being able to access Bitcoin might be two different things. I dismissed the thought. It was inconvenient, and I had a flight.