Real strategic assets - a short list:

Fossil fuels - pumped from the ground;
Precious metals - mined from the ground;
Industrial metals - mined from the ground;
Rare earth minerals - mined from the ground;
Lumber - harvested from forests;
Fisheries - harvested from the sea;
Agricultural products - grown and harvested;
Industry - constructed using natural and human resources;
Military capabilities - designed and constructed using natural and industrial resources;
Bitcoin - mined through compute power using available energy.

What do they have in common - proof of work.