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[@fadeev](/creator/twitter/fadeev)
"Tune in to tomorrow's Dev Office Hours on @ZetaChain. We'll dive into the new streamlined universal contract interface demo live calls from #Solana and #Bitcoin and showcase fresh CLI commands for estimating cross-chain fees and querying contract addresses"  
[X Link](https://x.com/fadeev/status/1982831104634814711) [@fadeev](/creator/x/fadeev) 2025-10-27T15:25Z 12.1K followers, XXX engagements


"pragma solidity 0.8.26; import "@zetachain/protocol-contracts/contracts/zevm/interfaces/UniversalContract.sol"; contract U is UniversalContract event E(); function onCall(MessageContext calldataaddressuintbytes calldata)external override onlyGatewayemit E();"  
[X Link](https://x.com/fadeev/status/1982860318046073098) [@fadeev](/creator/x/fadeev) 2025-10-27T17:21Z 12.1K followers, XXX engagements


"Smallest @ZetaChain universal contract fits inside a single tweet. Emits an event when called from any connected chain including #Bitcoin #Solana #Sui and #TON. One contract all chains. That's the tweet"  
[X Link](https://x.com/fadeev/status/1982860320331968808) [@fadeev](/creator/x/fadeev) 2025-10-27T17:21Z 12.1K followers, XXX engagements


"New screencast shows how to spin up your first universal contract on @ZetaChain full cross-chain flow in X mins"  
[X Link](https://x.com/fadeev/status/1983480930741387608) [@fadeev](/creator/x/fadeev) 2025-10-29T10:27Z 12.1K followers, XXX engagements