BitVM3 and Binohash Don’t Improve Bridge Security. Some Soft Forks Do.
BitVM3 and Binohash are exciting developments, but their impact on Bitcoin bridge security is often misunderstood. BitVM3 mainly improves collateral efficiency, making bridge constructions more capital efficient, while Binohash enables new forms of transaction introspection in Bitcoin Script with important limitations. In this talk, I explain why these advances do not fundamentally strengthen bridge security and explore which proposed Bitcoin soft forks actually move the needle.