Starting from Bitcoin, promote a "time trust" security system design paradigm Based on the structural design logic of Bitcoin, we can propose a universal decentralized security system construction method, whose core is: Design the business layer using computable theory, and the system layer using oracle Turing machines and super poor iterative design. By using the physical quantity of "time" as the basis for decision-making, a complete system without the need for central trust can be constructed. 1. Business layer: computable logic construction based on Turing machine theory We can design the entire logical structure (such as accounts, transfers, state transitions, etc.) of any type of currency system or other on chain business as a fully computable, self verifiable, and unambiguous closed system. The business layer logic should meet the following requirements: 100% offline verification and judgment capability The only remaining "undecidable part" is the self referential question about whether the system's own state ultimately holds true (such as "whether this transaction is ultimately recognized by the system") This is completely consistent with Turing's definition of the "limit of formal systems" in "On Computable Numbers": formal systems cannot self judge their own consistency or completeness. 2. System layer: Introducing temporal oracles to achieve "undecidable" external confirmation Faced with the inevitable "self referential problem" in the business layer, we introduce an external mechanism to make judgments. This mechanism is not a traditional arbitrator or authority center, but a time driven system composed of the following two components: Oracle Turing Machine: intervenes in the system as an external observer to determine problems that cannot be self proven within the formal system. Ordinary Logic: Used to construct an external evolutionary structure approximated by infinite ordinal numbers, so that each system evolution can be closer to capturing the "truth". This system must be bound to the physical time system in reality (especially irreversible time, such as the second law of thermodynamics), that is, its progress is irreversible, unpredictable, and unforgeable. In Bitcoin, this mechanism is specifically manifested as: PoW system as a time evolution engine Block time as a globally consistent timestamp The blockchain structure serves as the accumulated memory for "external judgments" 3. Conclusion: Construct a decentralized system that only trusts time, similar to Bitcoin We can apply the above logic to any form of decentralized business design: Firstly, build a computable business layer: all of its logic runs in a closed loop within the Turing machine domain, and can be judged offline except for self pointing. Introducing a time-based system layer: entrusting the decision-making power to the external real time evolution process, thereby achieving objective capture of self referential logic. Ultimately, a decision system is constructed that does not require a trust center and relies solely on temporal evolution. Its security does not depend on humans or code, but on decentralized physical time itself. This design paradigm is inspired by Bitcoin's ultimate philosophy of security: Do not trust people, do not trust code, only trust time.