Bitcoin's PH three-layer emergent adaptivity As a decentralized digital system, Bitcoin's resilience and adaptability stem from a sophisticated PH three-layer structure, each layer carrying unique roles and key interactive proof mechanisms, collectively creating its "self-awareness" like emergent adaptive ability. Firstly, the first layer in the PH three-layer structure is the decentralized account base UTXO. Here, the core role is the user. They declare ownership of digital assets by managing and spending Unspent Transaction Output (UTXO). The core of this layer is the interactive proof of asymmetric encryption: users use the private key corresponding to UTXO to digitally sign transactions. This signature is an interactive proof provided to the network, which proves to other nodes that the user has the authority to spend the UTXO. The verification process relies on the assumption of P!=NP, which means that it is computationally infeasible to find the private key to forge the signature, thus ensuring the unforgeability of the transaction and the security of ownership. Secondly, the second layer in the PH three-layer structure is the worker Miner. Miners play the role of network builders, collecting user submitted transactions, packaging them into blocks, and competing for accounting rights by solving complex Proof of Work (PoW) puzzles. PoW constitutes a proof mechanism for asymmetric interaction verification: miners need to invest huge computing resources to exhaustively search for Nonce in order to find a block hash value that meets a specific difficulty goal. And other nodes only need to perform a simple hash calculation once to quickly replicate and reproduce the work completed by the verification miner. The characteristic of "difficult to generate proof and easy to verify proof" ensures the fairness of block production and the security of the network. Finally, the third layer in the PH three-layer structure is the "longest chain" of invisible bosses. It is not an entity, but the result of all nodes in the network reaching consensus probabilistically based on the longest chain principle (i.e. the chain with the highest cumulative workload). The role here is the collective consciousness of the internet. Each full node independently verifies and maintains its own recognized longest chain, and this non deterministic probabilistic interactive verification is its proof mechanism. It is reflected in the continuous synchronization of block information between nodes and the selection of the longest and most labor-intensive chain based on known knowledge. Although it is impossible to predict where the next block will be linked, the continuous and probabilistic interactive verification between multiple nodes ultimately leads the entire network to converge towards a chain that is verified as the longest and safest. The PH three-layer structure of Bitcoin is closely interconnected and operates in synergy. Transactions submitted by users with UTXO interactive proofs are packaged by miners and broadcasted in the form of PoW; And miners, through their PoW interactive verification efforts, add new blocks to what they consider to be the 'longest chain'. This' longest chain 'thus becomes Bitcoin's adaptive' self-awareness'. Its history is certain and immutable, but its future is full of uncertainty - it cannot predict how the next second will extend. It is this combination of uncertainty and self-organization interwoven by three layers of interactive proof mechanisms that endows Bitcoin with strong emergent adaptability: it can autonomously respond to computing power fluctuations, cyber attacks, and market changes without central authority, demonstrating unique resilience and vitality.