isBase

Verify if a chain ID is a valid Base or Base Sepolia chain ID

The isBase utility is designed to verify if the chain ID is a valid Base or Base Sepolia chain ID.

Parameters

chainId · number · required

The chain ID to verify. For example, 8453 for Base Mainnet or 84532 for Base Sepolia.

Returns

boolean · boolean

Returns true if the chain ID is Base or Base Sepolia, otherwise false.

Usage

import { isBase } from '@coinbase/onchainkit';
const chainId = 8453;
if (isBase({ chainId })) {
console.log('The chainId is Base.');
} else {
console.log('The chainId is not Base.');
}