Reactive Network has now integrated with Linea Mainnet, giving it the ability to act as both an origin and a destination chain. This setup opens new ways to build cross-chain triggers, move data between networks, and design more adaptive applications.

Linea in Detail

Linea is a Layer-2 network built on Ethereum that uses zero-knowledge rollups to process transactions more efficiently while inheriting Ethereum’s security. Developed by Consensys, the team behind MetaMask, it makes blockchain applications faster and cheaper without changing how developers build them.

Because Linea is EVM-equivalent, any Ethereum smart contract can run on it without changes. This makes it familiar territory for developers, who can use the same tools and languages they already work with, like Hardhat, Truffle, or Foundry.

The network is also drawing institutional attention. SWIFT, the global financial messaging system, has chosen Linea as a base for exploring blockchain settlement — a signal that traditional finance is starting to treat Ethereum scaling solutions as viable foundations.

In the bigger picture, Linea extends Ethereum in a practical, developer-friendly way rather than creating a separate ecosystem. It continues Ethereum’s story, aiming to make blockchain feel less like an experiment and more like a usable part of the internet.

Reactive in Action

Cross-chain triggers: Contracts on Linea act as origin points, sending events that Reactive contracts pick up and process before returning callbacks to destination contracts on Linea or other EVM chains. This keeps applications aware of activity across networks without relying on centralized services.

Universal gas: Reactive transactions use REACT tokens on the Reactive Network. Combined with Linea’s fee model and EVM compatibility, this reduces friction and simplifies onboarding..

Cross-chain messaging: Reactive’s trust-minimized messaging layer complements Linea’s push for interoperability. Developers can move assets and data across chains while users stay within a single, Linea-based experience that hides the complexity of multi-chain coordination.

Finance, Infrastructure, and Beyond

1. Institutional settlement: SWIFT can test blockchain-based settlement directly on Linea, bridging on-chain systems with the rails of global finance.
2. Scalable DeFi: Protocols can run complex strategies on Linea while final proofs settle on Ethereum, keeping costs and latency low. Yield platforms and DEXes gain scalability without leaving Ethereum’s security model.
3. Interconnected apps: Reactive expands Linea’s role in multi-chain systems. A lending app can react to collateral changes on another chain or trigger liquidations automatically, all without centralized intermediaries.
4. User-facing innovation: Developers can build games, social apps, or NFT tools that behave like web apps — fast, low-cost, and familiar — while anchored to Ethereum’s trust layer.

Developer Setup Guide

Linea mainnet is available by default in MetaMask through an Infura RPC endpoint. To connect manually, use:

• RPC URL — https://rpc.linea.build
• Chain ID — 59144
• Gas Token — ETH
• Block Explorer — Lineascan

For more details, see Linea Docs.

About Reactive Network

Reactive is an EVM-compatible execution layer for dApps built with Reactive contracts. These contracts differ from traditional smart contracts by using inversion-of-control for the transaction lifecycle, triggered by data flows across blockchains rather than by direct user input.

Reactive contracts listen for event logs from multiple chains and execute Solidity logic in response. They can determine autonomously when to transmit data to destination chains, enabling conditional cross-chain state changes. The network delivers fast and cost-effective computation via a proprietary parallelized EVM implementation.

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