test_wallet_htlc.py

import asyncio
import copy
import hashlib
import secrets
from typing import List

import pytest
import pytest_asyncio

from cashu.core.base import HTLCWitness, Proof
from cashu.core.crypto.secp import PrivateKey
from cashu.core.htlc import HTLCSecret
from cashu.core.migrations import migrate_databases
from cashu.core.p2pk import SigFlags
from cashu.core.secret import SecretKind
from cashu.wallet import migrations
from cashu.wallet.wallet import Wallet
from cashu.wallet.wallet import Wallet as Wallet1
from cashu.wallet.wallet import Wallet as Wallet2
from tests.conftest import SERVER_ENDPOINT
from tests.helpers import pay_if_regtest


async def assert_err(f, msg):
    """Compute f() and expect an error message 'msg'."""
    try:
        await f
    except Exception as exc:
        if msg not in str(exc.args[0]):
            raise Exception(f"Expected error: {msg}, got: {exc.args[0]}")
        return
    raise Exception(f"Expected error: {msg}, got no error")


def assert_amt(proofs: List[Proof], expected: int):
    """Assert amounts the proofs contain."""
    assert [p.amount for p in proofs] == expected


@pytest_asyncio.fixture(scope="function")
async def wallet1():
    wallet1 = await Wallet1.with_db(
        SERVER_ENDPOINT, "test_data/wallet_p2pk_1", "wallet1"
    )
    await migrate_databases(wallet1.db, migrations)
    await wallet1.load_mint()
    yield wallet1


@pytest_asyncio.fixture(scope="function")
async def wallet2():
    wallet2 = await Wallet2.with_db(
        SERVER_ENDPOINT, "test_data/wallet_p2pk_2", "wallet2"
    )
    await migrate_databases(wallet2.db, migrations)
    wallet2.private_key = PrivateKey(secrets.token_bytes(32), raw=True)
    await wallet2.load_mint()
    yield wallet2


@pytest.mark.asyncio
async def test_create_htlc_secret(wallet1: Wallet):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(preimage=preimage)
    assert secret.data == preimage_hash


@pytest.mark.asyncio
async def test_htlc_split(wallet1: Wallet, wallet2: Wallet):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(preimage=preimage)
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)
    for p in send_proofs:
        assert HTLCSecret.deserialize(p.secret).data == preimage_hash


@pytest.mark.asyncio
async def test_htlc_redeem_with_preimage(wallet1: Wallet, wallet2: Wallet):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(preimage=preimage)
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)
    for p in send_proofs:
        p.witness = HTLCWitness(preimage=preimage).json()
    await wallet2.redeem(send_proofs)


@pytest.mark.asyncio
async def test_htlc_redeem_with_wrong_preimage(wallet1: Wallet, wallet2: Wallet):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=f"{preimage[:-5]}11111"
    )  # wrong preimage
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)
    for p in send_proofs:
        p.witness = HTLCWitness(preimage=preimage).json()
    await assert_err(
        wallet1.redeem(send_proofs), "Mint Error: HTLC preimage does not match"
    )


@pytest.mark.asyncio
async def test_htlc_redeem_with_no_signature(wallet1: Wallet, wallet2: Wallet):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage, hashlock_pubkeys=[pubkey_wallet1]
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)
    for p in send_proofs:
        p.witness = HTLCWitness(preimage=preimage).json()
    await assert_err(
        wallet2.redeem(send_proofs),
        "Mint Error: no signatures in proof.",
    )


@pytest.mark.asyncio
async def test_htlc_redeem_with_wrong_signature(wallet1: Wallet, wallet2: Wallet):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage, hashlock_pubkeys=[pubkey_wallet1]
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)
    signatures = wallet1.signatures_proofs_sig_inputs(send_proofs)
    for p, s in zip(send_proofs, signatures):
        p.witness = HTLCWitness(
            preimage=preimage, signatures=[f"{s[:-5]}11111"]
        ).json()  # wrong signature

    await assert_err(
        wallet2.redeem(send_proofs),
        "Mint Error: signature threshold not met",
    )


@pytest.mark.asyncio
async def test_htlc_redeem_with_correct_signature(wallet1: Wallet, wallet2: Wallet):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage, hashlock_pubkeys=[pubkey_wallet1]
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)

    signatures = wallet1.signatures_proofs_sig_inputs(send_proofs)
    for p, s in zip(send_proofs, signatures):
        p.witness = HTLCWitness(preimage=preimage, signatures=[s]).json()

    await wallet1.redeem(send_proofs)


@pytest.mark.asyncio
async def test_htlc_redeem_with_2_of_1_signatures(wallet1: Wallet, wallet2: Wallet):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    pubkey_wallet2 = await wallet2.create_p2pk_pubkey()
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage,
        hashlock_pubkeys=[pubkey_wallet1, pubkey_wallet2],
        hashlock_n_sigs=1,
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)

    signatures1 = wallet1.signatures_proofs_sig_inputs(send_proofs)
    signatures2 = wallet2.signatures_proofs_sig_inputs(send_proofs)
    for p, s1, s2 in zip(send_proofs, signatures1, signatures2):
        p.witness = HTLCWitness(preimage=preimage, signatures=[s1, s2]).json()

    await wallet2.redeem(send_proofs)


@pytest.mark.asyncio
async def test_htlc_redeem_with_2_of_2_signatures(wallet1: Wallet, wallet2: Wallet):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    pubkey_wallet2 = await wallet2.create_p2pk_pubkey()
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage,
        hashlock_pubkeys=[pubkey_wallet1, pubkey_wallet2],
        hashlock_n_sigs=2,
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)

    signatures1 = wallet1.signatures_proofs_sig_inputs(send_proofs)
    signatures2 = wallet2.signatures_proofs_sig_inputs(send_proofs)
    for p, s1, s2 in zip(send_proofs, signatures1, signatures2):
        p.witness = HTLCWitness(preimage=preimage, signatures=[s1, s2]).json()

    await wallet2.redeem(send_proofs)


@pytest.mark.asyncio
async def test_htlc_redeem_with_2_of_2_signatures_with_duplicate_pubkeys(
    wallet1: Wallet, wallet2: Wallet
):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    pubkey_wallet2 = pubkey_wallet1
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage,
        hashlock_pubkeys=[pubkey_wallet1, pubkey_wallet2],
        hashlock_n_sigs=2,
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)

    signatures1 = wallet1.signatures_proofs_sig_inputs(send_proofs)
    signatures2 = wallet2.signatures_proofs_sig_inputs(send_proofs)
    for p, s1, s2 in zip(send_proofs, signatures1, signatures2):
        p.witness = HTLCWitness(preimage=preimage, signatures=[s1, s2]).json()

    await assert_err(
        wallet2.redeem(send_proofs),
        "Mint Error: pubkeys must be unique.",
    )


@pytest.mark.asyncio
async def test_htlc_redeem_with_3_of_3_signatures_but_only_2_provided(
    wallet1: Wallet, wallet2: Wallet
):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    pubkey_wallet2 = await wallet2.create_p2pk_pubkey()
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage,
        hashlock_pubkeys=[pubkey_wallet1, pubkey_wallet2],
        hashlock_n_sigs=3,
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)

    signatures1 = wallet1.signatures_proofs_sig_inputs(send_proofs)
    signatures2 = wallet2.signatures_proofs_sig_inputs(send_proofs)
    for p, s1, s2 in zip(send_proofs, signatures1, signatures2):
        p.witness = HTLCWitness(preimage=preimage, signatures=[s1, s2]).json()

    await assert_err(
        wallet2.redeem(send_proofs),
        "Mint Error: not enough pubkeys (2) or signatures (2) present for n_sigs (3).",
    )


@pytest.mark.asyncio
async def test_htlc_redeem_with_2_of_3_signatures_with_2_valid_and_1_invalid_provided(
    wallet1: Wallet, wallet2: Wallet
):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    pubkey_wallet2 = await wallet2.create_p2pk_pubkey()
    privatekey_wallet3 = PrivateKey(secrets.token_bytes(32), raw=True)
    assert privatekey_wallet3.pubkey
    pubkey_wallet3 = privatekey_wallet3.pubkey.serialize().hex()

    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage,
        hashlock_pubkeys=[pubkey_wallet1, pubkey_wallet2, pubkey_wallet3],
        hashlock_n_sigs=2,
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)

    signatures1 = wallet1.signatures_proofs_sig_inputs(send_proofs)
    signatures2 = wallet2.signatures_proofs_sig_inputs(send_proofs)
    signatures3 = [f"{s[:-5]}11111" for s in signatures1]  # wrong signature
    for p, s1, s2, s3 in zip(send_proofs, signatures1, signatures2, signatures3):
        p.witness = HTLCWitness(preimage=preimage, signatures=[s1, s2, s3]).json()

    await wallet2.redeem(send_proofs)


@pytest.mark.asyncio
async def test_htlc_redeem_hashlock_wrong_signature_timelock_correct_signature(
    wallet1: Wallet, wallet2: Wallet
):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    pubkey_wallet2 = await wallet2.create_p2pk_pubkey()
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage,
        hashlock_pubkeys=[pubkey_wallet2],
        locktime_seconds=2,
        locktime_pubkeys=[pubkey_wallet1],
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)

    signatures = wallet1.signatures_proofs_sig_inputs(send_proofs)
    for p, s in zip(send_proofs, signatures):
        p.witness = HTLCWitness(preimage=preimage, signatures=[s]).json()

    # should error because we used wallet2 signatures for the hash lock
    await assert_err(
        wallet1.redeem(send_proofs),
        "Mint Error: signature threshold not met",
    )

    await asyncio.sleep(2)
    # should succeed since lock time has passed and we provided wallet1 signature for timelock
    await wallet1.redeem(send_proofs)


@pytest.mark.asyncio
async def test_htlc_redeem_hashlock_wrong_signature_timelock_wrong_signature(
    wallet1: Wallet, wallet2: Wallet
):
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    pubkey_wallet2 = await wallet2.create_p2pk_pubkey()
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage,
        hashlock_pubkeys=[pubkey_wallet2],
        locktime_seconds=2,
        locktime_pubkeys=[pubkey_wallet1, pubkey_wallet2],
        locktime_n_sigs=2,
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)

    signatures = wallet1.signatures_proofs_sig_inputs(send_proofs)
    for p, s in zip(send_proofs, signatures):
        p.witness = HTLCWitness(
            preimage=preimage, signatures=[f"{s[:-5]}11111"]
        ).json()  # wrong signature

    # should error because we used wallet2 signatures for the hash lock
    await assert_err(
        wallet1.redeem(send_proofs),
        "Mint Error: signature threshold not met. 0 < 1.",
    )

    await asyncio.sleep(2)
    # should fail since lock time has passed and we provided not enough signatures for the timelock locktime_n_sigs
    await assert_err(
        wallet1.redeem(send_proofs),
        "Mint Error: signature threshold not met. 1 < 2.",
    )


@pytest.mark.asyncio
async def test_htlc_redeem_timelock_2_of_2_signatures(wallet1: Wallet, wallet2: Wallet):
    """Testing the 2-of-2 timelock (refund) signature case."""
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    pubkey_wallet2 = await wallet2.create_p2pk_pubkey()
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    secret = await wallet1.create_htlc_lock(
        preimage=preimage,
        hashlock_pubkeys=[pubkey_wallet2],
        locktime_seconds=2,
        locktime_pubkeys=[pubkey_wallet1, pubkey_wallet2],
        locktime_n_sigs=2,
    )
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)
    send_proofs_copy = send_proofs.copy()

    signatures = wallet1.signatures_proofs_sig_inputs(send_proofs)
    for p, s in zip(send_proofs, signatures):
        p.witness = HTLCWitness(preimage=preimage, signatures=[s]).json()

    # should error because we used wallet2 signatures for the hash lock
    await assert_err(
        wallet1.redeem(send_proofs),
        "Mint Error: signature threshold not met. 0 < 1.",
    )

    await asyncio.sleep(2)
    # locktime has passed

    # should fail. lock time has passed but we provided only wallet1 signature for timelock, we need 2 though
    await assert_err(
        wallet1.redeem(send_proofs),
        "Mint Error: not enough pubkeys (2) or signatures (1) present for n_sigs (2).",
    )

    # let's add the second signature
    send_proofs_copy = wallet2.sign_p2pk_sig_inputs(send_proofs_copy)

    # now we can redeem it
    await wallet1.redeem(send_proofs_copy)


@pytest.mark.asyncio
async def test_htlc_sigall_behavior(wallet1: Wallet, wallet2: Wallet):
    """Test HTLC with SIG_ALL flag, requiring signatures on both inputs and outputs."""
    # Mint tokens for testing
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)

    # Setup HTLC parameters
    preimage = "00000000000000000000000000000000"
    # preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
    pubkey_wallet2 = await wallet2.create_p2pk_pubkey()

    # Create HTLC lock with SIG_ALL flag
    secret = await wallet1.create_htlc_lock(
        preimage=preimage,
        hashlock_pubkeys=[pubkey_wallet2],
        hashlock_n_sigs=1,
    )

    # Modify the secret to use SIG_ALL
    secret.tags["sigflag"] = SigFlags.SIG_ALL.value

    # Send tokens with this HTLC lock
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)

    # verify sigflag is SIG_ALL
    assert HTLCSecret.from_secret(secret).kind == SecretKind.HTLC.value
    assert HTLCSecret.from_secret(secret).sigflag == SigFlags.SIG_ALL

    # first redeem fails because no preimage
    await assert_err(
        wallet2.redeem(send_proofs), "Mint Error: no HTLC preimage provided"
    )

    # we add the preimage to the proof
    for p in send_proofs:
        p.witness = HTLCWitness(preimage=preimage).json()

    # Should succeed, redeem adds signatures to the proof
    await wallet2.redeem(send_proofs)


@pytest.mark.asyncio
async def test_htlc_n_sigs_refund_locktime(wallet1: Wallet, wallet2: Wallet):
    """Test HTLC with n_sigs_refund parameter requiring multiple signatures for refund after locktime."""
    # Create a third wallet for the third signature
    wallet3 = await Wallet.with_db(
        SERVER_ENDPOINT, "test_data/wallet_htlc_3", "wallet3"
    )
    await migrate_databases(wallet3.db, migrations)
    wallet3.private_key = PrivateKey(secrets.token_bytes(32), raw=True)
    await wallet3.load_mint()

    # Mint tokens for testing
    mint_quote = await wallet1.request_mint(64)
    await pay_if_regtest(mint_quote.request)
    await wallet1.mint(64, quote_id=mint_quote.quote)

    # Setup parameters
    preimage = "00000000000000000000000000000000"
    pubkey_wallet1 = await wallet1.create_p2pk_pubkey()
    pubkey_wallet2 = await wallet2.create_p2pk_pubkey()
    pubkey_wallet3 = await wallet3.create_p2pk_pubkey()

    # Wrong preimage - making it so we can only spend via locktime
    wrong_preimage = "11111111111111111111111111111111"

    # Create HTLC with:
    # 1. Timelock in the past
    # 2. Three refund pubkeys with 2-of-3 signature requirement
    secret = await wallet1.create_htlc_lock(
        preimage=wrong_preimage,  # this ensures we can't redeem via preimage
        hashlock_pubkeys=[pubkey_wallet2],
        locktime_seconds=-200000,
        locktime_pubkeys=[pubkey_wallet1, pubkey_wallet2, pubkey_wallet3],
        locktime_n_sigs=2,  # require 2 of 3 signatures for refund
    )

    # # Send tokens with this lock
    _, send_proofs = await wallet1.swap_to_send(wallet1.proofs, 8, secret_lock=secret)
    send_proofs_copy = copy.deepcopy(send_proofs)

    # # First, try correct preimage but should fail as we're using wrong preimage hash
    # for p in send_proofs:
    #     p.witness = HTLCWitness(preimage=preimage).json()

    # await assert_err(
    #     wallet2.redeem(send_proofs), "Mint Error: HTLC preimage does not match"
    # )

    # # Wait for locktime to pass
    # await asyncio.sleep(2)

    # Try redeeming with only 1 signature after locktime
    signatures1 = wallet1.signatures_proofs_sig_inputs(send_proofs_copy)
    for p, sig in zip(send_proofs_copy, signatures1):
        p.witness = HTLCWitness(preimage=preimage, signatures=[sig]).json()

    # Should fail because we need 2 signatures
    await assert_err(
        wallet1.redeem(send_proofs_copy),
        "Mint Error: not enough pubkeys (3) or signatures (1) present for n_sigs (2)",
    )

    # Make a fresh copy and add 2 signatures
    send_proofs_copy2 = copy.deepcopy(send_proofs)
    signatures1 = wallet1.signatures_proofs_sig_inputs(send_proofs_copy2)
    signatures2 = wallet2.signatures_proofs_sig_inputs(send_proofs_copy2)

    for p, sig1, sig2 in zip(send_proofs_copy2, signatures1, signatures2):
        p.witness = HTLCWitness(preimage=preimage, signatures=[sig1, sig2]).json()

    # Should succeed with 2 of 3 signatures after locktime
    await wallet1.redeem(send_proofs_copy2)