SafeTx is a Multi-Chain Safe Transaction Protocol engineered to eliminate irreversible errors and cross-chain risks by introducing a built-in safety and recovery layer for blockchain transactions. SafeTx enables Solana → Solana transactions with an on-chain undo/cancel window of up to 2 minutes, giving users a critical buffer to reverse mistakes, stop malicious transfers, or abort compromised actions before final settlement. This breakthrough feature redefines transaction safety on high-speed blockchains where errors are typically permanent. Beyond single-chain protection, SafeTx extends secure interoperability by supporting Solana → EVM chain transfers through trusted bridges such as LayerZero and Wormhole. The protocol coordinates verification across networks, ensuring transactions are executed only when safety conditions are met on both sides of the bridge.