The Bitcoin network consists of two layers that can be separated (system layer, business layer). -Business layer (presented in the form of transactions) The programming logic of UTXO transfer in the TX layer can be 100% arbitrarily determined offline, which belongs to the deterministic problem in computable theory. The only undecidable self referential problem thrown by the TX layer is left to the system layer to fully capture. The group that interacts with this layer is the holders of BTC. -System layer (presented in the form of blocks) The group that interacts with this layer is miners. This layer is commonly known as POW, with the sole purpose of establishing a decentralized time system. And the decentralized time system is only designed to solve one problem, which is to capture the self referential judgment problem of the TX business layer. The theory based on this layer goes beyond the realm of computability, so Turing introduced the oracle Turing machine+super poor iterative algorithm to establish an ordinal recursive system that relies on time for accuracy. Summary: 1. In the Bitcoin business layer, except for self referential issues, it can be 100% self judged without ambiguity, so there will be no security vulnerabilities that can be attacked. It is a deterministic computable theoretical category. 2. The Bitcoin system layer aims to solve the unique self referential undecidable problem in the Bitcoin business layer by establishing a decentralized time system. The economics of 321 million is a value game foundation introduced outside of the system and business layers.