The main contribution of BitVMX is the simplification and enhancement of the dispute resolution process. Unlike BitVM1, BitVMX does not require the creation of Merkle trees for CPU instructions or memory words, nor does it rely on signature equivocations. These design choices significantly reduce the complexity associated with BitVM1 and make BitVMX a compelling alternative, particularly in scenarios where minimizing transaction costs and round complexity is crucial. The system is highly flexible, allowing for a balance between transaction cost, round complexity, prover cost, verifier cost, and precomputations, tailored to the specific needs of the application.