Queried by: developerswallets
The Big Picture
The chain ID is critical for Ethereum compatibility - it's included in transaction signatures to prevent replay attacks across different networks. Wallets need this to sign correctly.
Use Cases
- Configure wallet chain ID
- Validate transaction signatures
- Prevent replay attacks across chains
From Chain Metadata
The EVM chain ID.
Purpose & Usage
Purpose
Stores the chain ID used for Ethereum transaction signing.
Common Query Patterns
- Single value query
Stored Value
Code Examples
import { createClient, Binary } from "polkadot-api";
import { getWsProvider } from "polkadot-api/ws";
import { sub } from "@polkadot-api/descriptors"; // generated by: npx papi add sub -w wss://entrypoint-finney.opentensor.ai:443
const client = createClient(getWsProvider("wss://entrypoint-finney.opentensor.ai:443"));
const api = client.getTypedApi(sub);
// Query ChainId storage (no keys - plain value)
const result = await api.query.EVMChainId.ChainId.getValue();
console.log("ChainId:", result);Runtime Info
- Pallet
- EVMChainId
- Storage Kind
- Plain
- First Version
- v210
- Current Version
- v411