/**
 * Far-side verification of P2WPKH ECDSA signatures a wallet returned, over
 * the PSBT we requested (trusted prevouts) — the Native SegWit sibling of
 * `verifyKeyPathSchnorrSignature`. Reference: btc-vault
 * `crates/btc-wallet-remote/src/client.rs:945-1000
 * verify_finalized_p2wpkh_spend`. The wallet's success/finalization is
 * never trusted on its own (CLAUDE.md §8): prevout script and value come
 * from the PSBT we built; only the signature bytes come from the wallet.
 *
 * @module tbv/core/primitives/psbt/verifyP2wpkhEcdsaSignature
 */
/** Only claim P2WPKH: 22-byte scriptPubKey starting `OP_0 PUSH20`. */
export declare function isP2wpkhScript(script: Uint8Array | undefined): script is Uint8Array;
export interface AssertReturnedP2wpkhSignatureParams {
    /** Hex of the PSBT we built and sent (trusted prevout script/value). NOT the wallet's. */
    requestedPsbtHex: string;
    /** The wallet-returned PSBT input carrying the signature material. */
    returnedInput: {
        partialSig?: Array<{
            pubkey: Uint8Array;
            signature: Uint8Array;
        }>;
        finalScriptWitness?: Uint8Array;
    };
    /** Index of the input the signature is for. */
    inputIndex: number;
}
/**
 * Assert that the returned input carries a valid P2WPKH ECDSA signature
 * over the BIP-143 sighash of `requestedPsbtHex` input `inputIndex`:
 * `partialSig` (BIP-174: the value is the exact witness-stack signature
 * bytes, the key its pubkey), or the finalized 2-item witness — and when
 * both are present they must be the same bytes.
 *
 * @throws If the requested input is not a P2WPKH spend, no signature was
 *         returned, a finalized witness disagrees with its `partialSig`,
 *         or any check of `verify_finalized_p2wpkh_spend` fails.
 */
export declare function assertReturnedP2wpkhSignature(params: AssertReturnedP2wpkhSignatureParams): void;
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