/// <reference types="node" />
/**
 * The interface required by the Chainfilter to perform on-chain validation checks
 * of messages. A simplified interface is required by the Chainfilter. The actual
 * chain client implementation may offer a broader set of feautures. Additionally,
 * an adapter could be constructred to make an chain client conform to that required
 * by the Chainfilter.
 */
export interface IChainFilterChainClient {
    getBlockchainInfo(): Promise<HasBlocks & HasBestBlockHash>;
    getBlockHash(height: number): Promise<string>;
    getBlock(hash: string): Promise<HasTxStrings & HasHeight & HasHash>;
    getRawBlock(hash: string): Promise<Buffer>;
    getTransaction(txId: string): Promise<HasTransaction>;
    getUtxo(txId: string, voutIdx: number): Promise<HasConfirmations>;
    waitForSync(): Promise<boolean>;
}
export type HasBlocks = {
    blocks: number;
};
export type HasBestBlockHash = {
    bestblockhash: string;
};
export type HasTxStrings = {
    tx: string[];
};
export type HasHeight = {
    height: number;
};
export type HasHash = {
    hash: string;
};
export type HasTransaction = {
    txid: string;
    blockhash: string;
};
export type HasScriptPubKey = {
    scriptPubKey: HasHex;
};
export type HasValue = {
    value: number;
};
export type HasConfirmations = {
    confirmations: string;
};
export type HasHex = {
    hex: string;
};