The essence of BTC, in my opinion, is a new type of production relationship in the post-capitalist era.
Let us define "value" as a certain proportional relationship between products. Just like the relationship between length and weight, there is also a certain value relationship between any two products, one with a large value and one with a small value. From qualitative comparison to quantitative comparison, we need to introduce weights and measures and measuring tools. Length is measured by meters, and the measuring tool is a ruler. Weight is measured by grams, and the measuring tool is a scale. Value is measured by monetary units, and the measuring tool is the human heart.
For a single product, it is impossible to say whether it is long or short, light or heavy, or whether it is valuable or small. Only by comparing it with other products can we have such a relationship as length, weight, and value. Therefore, the relationship is relative, not absolute.
But length, weight, and value are all objective facts, and are an objective attribute of the product itself. However, value is different from length and weight. The ruler for measuring length and the scale for measuring weight are standardized, tangible, visible and tangible. But the scale for measuring value is in everyone's heart. The so-called "the people have a scale in their hearts" is invisible and intangible.
BTC miners produce the most original product for BTC: BTC's ledger, or, strictly speaking, BTC's block space. Paying BTC as a chain handling fee, or "miner's fee", in order to record your BTC transfer transactions on the BTC ledger is essentially bidding for this limited block space that is generated one by one every 10 minutes on average.
Of course, this block space is very different from our ordinary disk storage space. Just like a car is very different from the raw materials used to make a car, such as steel and rubber. These block spaces are storage spaces that have been proven by the PoW proof of work generated by extremely powerful computing power. All data written to the block space are stamped with the mark of "reliability" or "security" by this proof. Even the most powerful power held by humans on the earth today cannot shake it, the most powerful force cannot defeat it, and the most powerful capital cannot buy it!