Signet

# Signet > Signet is a pragmatic Ethereum rollup with sustainable economic incentives. Signet is an Ethereum rollup that enables cross-chain settlement in the same block. For complete documentation with full page content, see: https://signet.sh/llms-full.txt ## Network Configuration (Testnet: Parmigiana Testnet) - Chain ID: 88888 - RPC URL: https://rpc.parmigiana.signet.sh - Host RPC URL: https://host-rpc.parmigiana.signet.sh - Explorer: https://explorer.parmigiana.signet.sh ### Key Contracts (Host Chain) - Zenith: `0x143A5BE4E559cA49Dbf0966d4B9C398425C5Fc19` - HostOrders: `0x96f44ddc3Bc8892371305531F1a6d8ca2331fE6C` - Passage: `0x28524D2a753925Ef000C3f0F811cDf452C6256aF` - Transactor: `0x0B4fc18e78c585687E01c172a1087Ea687943db9` ### Key Contracts (Rollup) - RollupOrders: `0x000000000000007369676e65742d6f7264657273` - RollupPassage: `0x0000000000007369676e65742d70617373616765` - WUSD: `0x0000000000000000007369676e65742D77757364` ## Key Constraints & Requirements - Signet is an EVM-compatible Ethereum L2 rollup — all standard Solidity contracts and EVM tooling work without modification - Uses based sequencing: the Ethereum L1 host chain proposes and validates rollup blocks via the Zenith contract - Cross-chain operations (bridging, orders) require interaction with host chain system contracts (Passage, HostOrders, Transactor) - Settlement is atomic with Ethereum — rollup state transitions are finalized in the same L1 block - The native currency on the rollup is USD (wrapped as WUSD); the host chain uses ETH - All system contracts are predeployed at deterministic addresses (see contract addresses above) ## Integrations - **Ethereum tooling**: viem, ethers.js, web3.js, and wagmi work out of the box — connect to Signet RPC like any EVM chain - **Wallets**: MetaMask and any EVM-compatible wallet can be configured with the Signet RPC URL and chain ID - **Smart contracts**: Deploy and interact with Solidity or Vyper contracts using Hardhat, Foundry, or Remix - **Block explorers**: Signet provides a block explorer at https://explorer.parmigiana.signet.sh ## Quick Example Connect to Signet and read the latest block number using viem: ```javascript import { createPublicClient, http } from "viem"; const client = createPublicClient({ chain: { id: 88888, name: "Parmigiana Testnet", nativeCurrency: { name: "USD", symbol: "USD", decimals: 18 }, rpcUrls: { default: { http: ["https://rpc.parmigiana.signet.sh"] } }, }, transport: http(), }); const blockNumber = await client.getBlockNumber(); ``` ## Quickstart - [Getting started](https://signet.sh/docs/build-on-signet/getting-started/index.md): Install dependencies and configure clients for Signet development. ## Building on Signet ## Understanding Signet ## Reference - [FAQ](https://signet.sh/docs/more-info/faq/index.md): Frequently asked questions about Signet - [Glossary](https://signet.sh/docs/more-info/glossary/index.md): Definitions of key terms and concepts in Signet ## Optional (skip unless specifically relevant) - [Authentication](https://signet.sh/docs/block-builders/run-a-builder/authentication/index.md): How to configure OAuth2 authentication for sequencer co-signatures and bundle relay access. - [Build from source](https://signet.sh/docs/block-builders/run-a-builder/install-and-run-a-node/build-from-source/index.md): How to clone, compile, and run the Signet node from source code. - [Environment variables](https://signet.sh/docs/block-builders/run-a-builder/environment-variables/index.md): Configuration reference for all environment variables used by the Signet builder. - [Fetching transactions](https://signet.sh/docs/searchers/fetching-transactions/index.md): How to fetch transactions stored on Signet's transaction cache. - [Getting transactions and bundles](https://signet.sh/docs/block-builders/customizing-a-builder/getting-transactions-and-bundles-for-a-block/index.md): How to retrieve transactions and bundles from the transaction c […truncated]