**zkEVM Testnet 'zKatana' Launched by ASTR Network** 🚀: ASTR Network (ASTR) has unveiled the zkEVM testnet named 'zKatana,' building on its earlier announcement from last September about the launch of Asta zkEVM, a Layer 2 solution founded on Polygon CDK. 🌐🛠️ #ASTRNetwork #zkEVM #Layer2 #Blockchain 📢📈