In the past year, the BTC ecosystem has experienced a mixed development stage of barbaric growth, and “no direction, no standard, no threshold” has made the BTC layer 2 track quickly crowded with builders: EVM-Compatible, UTXO Stack isomorphic binding, UTXO Parallel Stacking, etc. It is said that there are hundreds of BTC layer 2 in the pipeline, BitVM off-chain Turing-complete, RGB native, AVM VM, and so on, it is said that there are hundreds of BTC layer 2 tracks in the pipeline. However, there is no conclusion yet as to which direction can run out.