import * as bitcoin from 'bitcoinjs-lib';
import { NormalizedSpell } from './types';
export interface Proof {
    [key: string]: any;
}
export declare class BitcoinTx {
    tx: bitcoin.Transaction;
    constructor(tx: bitcoin.Transaction);
    static fromHex(hex: string): BitcoinTx;
    extractAndVerifySpell(spellVk: string): NormalizedSpell;
    parseSpellAndProof(spellTxIn: bitcoin.TxInput): {
        spell: NormalizedSpell;
        proof: Proof;
    };
    private spellWithIns;
    private verifyGroth16Sync;
    private verifyGroth16;
    private validateProofStructure;
    private validateSpellStructure;
    private getVerificationKeys;
    private convertProofToSnarkjs;
    private generatePublicValues;
    txOutsLen(): number;
    txId(): string;
    hex(): string;
}