export declare const BITCOIN_MAINNET_CHAIN_ID = "1";
export declare const BITCOIN_TESTNET_CHAIN_ID = "2";
/**
 * Maps a Bitcoin address to the network identifier used by the transaction
 * screening contract. Regtest counts as testnet here: there is no separate
 * identifier for it in the signing contract, and it isn't mainnet.
 */
export declare const getBitcoinChainId: (accountAddress: string) => string;