Ika has launched a mainnet upgrade that introduces EdDSA signatures, enabling native cross-chain support for Solana, Zcash, Cardano, Stellar, and Near. This development allows for zero-trust, programmable signing across these ecosystems without relying on bridges or custodians. Developers can now create applications to manage accounts and actions across these networks using smart contract-governed access. The upgrade is live, allowing immediate integration of new workflows.