Bitcoin is a timechain, literally.

Satoshi referred to the timechain many times in his emails with the early devs.

You can measure time in blocks, since one block is mined every ~10 minutes.

Our time is our most scarce and precious resource.

It is our literal life force.

True Money allows us to store our time.

It is the way we can acknowledge the time we 'spent'.

We trade our time for money, which is simply a record of our time and effort.

Bitcoin makes it possible to preserve our time such that we have 'access' to it later in life, when we are no longer able to work as we once did.