An automated, cross-chain security state machine powered by Reactive Network. Reactive Sentinel monitors smart contract events on an origin chain (Ethereum Sepolia) in real-time and instantly triggers emergency mitigation callbacks on a destination chain (Base Sepolia) within seconds of an exploit or critical state change.
Reactive Sentinel eliminates the latency of traditional centralized keepers by executing low-latency, decentralized event-driven reactions directly at the consensus level.
- Origin Event: A state-changing event (e.g., a mock attack or deposit) is triggered on
EthOriginVault. - Reactive Interception: The
SentinelReactivecontract deployed on the Reactive Lasna Testnet intercepts the log emission instantly via sub-graphless event subcription. - Cross-Chain Callback: The reactive engine computes the state mutation and dispatches an automated, authorized callback down to
BaseOriginVaultto lock states or alter permissions.
The architecture is fully compiled, optimized, and deployed across the following testnet layers:
| Contract | Network | Live Explorer Address |
|---|---|---|
| EthOriginVault | Ethereum Sepolia | 0xB51aAaC9604250987978... |
| BaseOriginVault | Base Sepolia | 0x71A80Ff1868B05753d83... |
| SentinelReactive | Reactive Lasna | 0x2F51F0dB9e7F3966CA0F... |
- Smart Contracts: Solidity (Hardhat compilation pipeline)
- Reactive Layer: Reactive Network (Lasna Testnet)
- Frontend: Vite + React + TypeScript + TailwindCSS
- Package Management: PNPM Workspaces
You can test the end-to-end automated reaction flow using the interactive frontend dashboard or directly via block explorers:
Connect your Web3 wallet (MetaMask / Phantom) to the Ethereum Sepolia Testnet and call the deposit() or simulated trigger function on the EthOriginVault contract.
Open the Reactive Omni Explorer (lasna-omni.reactscan.net) and paste the SentinelReactive address. You will observe the reactive transaction capturing the origin event emit.
Check the transaction history of BaseOriginVault on Base Sepolia Etherscan. Within blocks, an automated callback transaction origin from the Reactive Network will be executed, proving fully autonomous cross-chain synchronization.