True blockchain interoperability is of utmost importance for the future of web3, however it has remained largely elusive and "bridges" have been targets of some of the largest online thefts the world has ever seen. A novel approach by L1 Zetachain promises omnichain interoperability with cold wallet security and hot wallet convenience. Brandon explains how his team of engineers is approaching this hard problem and how it enables unified global liquidity, portable digital identity and various other use cases.