/**
 * Multi-chain configuration for b402
 *
 * B402 Railgun fork contracts (0% protocol fees):
 * - BSC Mainnet:      0x9dB0eDC77C9047a06Fd6dE82c892630DAa5eF601
 * - Base Mainnet:     0x26111e2379E5fC0A7Cd8728fe52c7b84CA4fbE85
 * - Arbitrum One:     0x9dB0eDC77C9047a06Fd6dE82c892630DAa5eF601 (deployed 2026-04-13)
 */
export interface ChainConfig {
    name: string;
    chainId: number;
    railgunRelay: `0x${string}`;
    /** RelayAdapt cross-contract call router — differs per chain. Optional for chains without RelayAdapt deployed yet. */
    relayAdapt?: `0x${string}`;
    rpc: string;
    backendApiUrl: string;
    facilitatorUrl?: string;
    explorerUrl: string;
    tokens: Record<string, {
        address: `0x${string}`;
        symbol: string;
        decimals: number;
    }>;
}
export declare const B402_TREASURY: {
    readonly MPK: "0x2ee3d72502613195a791ab3b68935d910bc1a36b634d62eeceb9a9cfb1a1d697";
    readonly VPK: "0x04ffbb58b9a4cb0fb472ad2a934e63832bf1a959b07f390f149fa4c70867fe53";
};
export declare const B402_CHAINS: Record<number, ChainConfig>;
export declare const RAILGUN_NETWORK_MAP: Record<number, {
    networkName: string;
    creationBlock: number;
}>;
export declare const CHAIN_ALIASES: Record<string, number>;
/**
 * Get chain config by chain ID or alias
 */
export declare function getChainConfig(chainIdOrAlias: number | string): ChainConfig;
/**
 * Get token address for a chain
 */
export declare function getTokenAddress(chainId: number, symbol: string): `0x${string}`;
/**
 * Get Railgun relay contract for a chain
 */
export declare function getRailgunRelay(chainId: number): `0x${string}`;
/**
 * Get RelayAdapt cross-contract call router for a chain.
 * Throws if the chain has no RelayAdapt deployed (required for private DeFi / bridges).
 */
export declare function getRelayAdaptAddress(chainId: number): `0x${string}`;
/**
 * Get backend API URL for a chain
 */
export declare function getBackendApiUrl(chainId: number): string;
export interface ChainContracts {
    RAILGUN_RELAY: `0x${string}`;
    ENTRY_POINT: `0x${string}`;
    NEXUS_FACTORY: `0x${string}`;
    NEXUS_BOOTSTRAP: `0x${string}`;
    K1_VALIDATOR: `0x${string}`;
    PAYMASTER: `0x${string}` | undefined;
}
/**
 * Get all contract addresses for a chain (Railgun + ERC-4337 + paymaster).
 * ERC-4337 contracts are deterministic — same address on every chain.
 * Railgun and paymaster are chain-specific.
 */
export declare function getContractsForChain(chainId: number): ChainContracts;
/**
 * Get the Railgun SDK NetworkName for a chain ID.
 * Used to initialize the Railgun engine and call populateShield/populateUnshield.
 */
export declare function getRailgunNetworkName(chainId: number): string;
/**
 * Get default chain from environment or fallback to Base
 */
export declare function getDefaultChainId(): number;