import { ChainTracker } from '@bsv/sdk';
import { GetMerklePathResult, WalletServices } from '../sdk/WalletServices.interfaces';
/**
 * Reject proof-provider results unless at least one returned path proves the
 * requested transaction against the active chain. Invalid paths are removed
 * before the result is returned so a stale path cannot precede a valid one.
 */
export declare function validateCanonicalMerklePathResult(txid: string, result: GetMerklePathResult, chaintracker: ChainTracker): Promise<void>;
/**
 * Obtain a canonical proof with provider failover when the service supports
 * it. Custom WalletServices implementations without the optional failover
 * method still fail closed after validating their single lookup.
 */
export declare function getCanonicalMerklePath(services: WalletServices, chaintracker: ChainTracker, txid: string): Promise<GetMerklePathResult>;
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