Someone asked me, what's going on with the recently released zk technology for Bitcoin cross chain? They are based on zk and mint zkBTC on eth to map BTC. The BTC side hopes to use a new code OP_ZKP for zkp verification, but it is still unknown when the BTC mainnet will support OP_ZKP. Currently, it should be done using a centralized approach, which is not yet available overall. MAPO is one of the earliest cross chain projects to use zkp technology and has been continuously upgrading the Bitcoin network.