import { BaseBlockchain } from './base-blockchain.js';
import { type AddressCallback, type TransactionCallback, type BlockchainTransaction, type BlockchainUTXO, type BlockchainUTXOs } from './types.js';
import { ExtMap, Transaction } from '@xocash/primitives';
import { type Output } from '@bitauth/libauth';
export declare class BlockchainLocal extends BaseBlockchain {
    private transactions;
    private addressSubscriptions;
    private transactionSubscriptions;
    constructor();
    start(): Promise<void>;
    stop(): Promise<void>;
    fetchUnspents(address: string): Promise<ExtMap<BlockchainUTXO>>;
    fetchTransaction(txHash: string): Promise<Transaction>;
    fetchTransactions(address: string): Promise<ExtMap<BlockchainTransaction>>;
    broadcastTransaction(tx: Transaction | Uint8Array | string, opts?: {
        skipValidation: boolean;
    }): Promise<void>;
    subscribeAddress(address: string, callback: AddressCallback): Promise<void>;
    unsubscribeAddress(address: string, callback: AddressCallback): Promise<void>;
    subscribeTransaction(transactionHash: string, callback: TransactionCallback): Promise<void>;
    unsubscribeTransaction(transactionHash: string, callback: TransactionCallback): Promise<void>;
    private notifyAddressSubscribers;
    private notifyTransactionSubscribers;
    addTransaction(tx: BlockchainTransaction): void;
    removeTransaction(txHash: string): void;
    deriveUtxoSet(): BlockchainUTXOs;
    /**
     * @remarks Consider moving this to Transaction Primitive. Trade-off is that it's probably big. Maybe standalone util?
     */
    static validateTransaction(tx: Transaction, sourceOutputs: Array<Output>): void;
}