import { Chain } from './Chain';
/**
 * Ethereum mainnet (chainId 1).
 *
 * Standard EIP-1559 behavior — ethers' getFeeData is accurate here.
 * No floors, no special multipliers. The base class default works as-is;
 * this subclass exists for the registry and for future overrides.
 */
export declare class EthereumChain extends Chain {
    static chainId: number;
    static defaults: {
        name: string;
        aliases: string[];
        rpc: string;
        nativeCurrencyName: string;
        nativeCurrencySymbol: string;
        nativeCurrencyDecimals: number;
    };
}
/**
 * Sepolia testnet (chainId 11155111). Same behavior as Ethereum mainnet.
 */
export declare class SepoliaChain extends Chain {
    static chainId: number;
    static defaults: {
        name: string;
        aliases: string[];
        rpc: string;
        nativeCurrencyName: string;
        nativeCurrencySymbol: string;
        nativeCurrencyDecimals: number;
    };
}
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