예제 #1
0
    def test_segwit_create_tx(self):
        from pycoinzpub.tx.tx_utils import create_tx, sign_tx
        from pycoinzpub.tx.Spendable import Spendable
        from pycoinzpub.tx.pay_to.ScriptPayToAddress import ScriptPayToAddress
        from pycoinzpub.tx.pay_to.ScriptPayToAddressWit import ScriptPayToAddressWit
        from pycoinzpub.ui import address_for_pay_to_script_wit, script_obj_from_address
        key1 = Key(1)
        coin_value = 5000000
        script = ScriptPayToAddressWit(b'\0', key1.hash160()).script()
        tx_hash = b'\ee' * 32
        tx_out_index = 0
        spendable = Spendable(coin_value, script, tx_hash, tx_out_index)
        key2 = Key(2)
        tx = create_tx([spendable], [(key2.address(), coin_value)])
        self.check_unsigned(tx)
        sign_tx(tx, [key1.wif()])
        self.check_signed(tx)
        self.assertEqual(len(tx.txs_in[0].witness), 2)

        s1 = ScriptPayToAddress(key1.hash160()).script()
        address = address_for_pay_to_script_wit(s1)
        spendable.script = script_obj_from_address(address).script()
        tx = create_tx([spendable], [(key2.address(), coin_value)])
        self.check_unsigned(tx)
        sign_tx(tx, [key1.wif()], p2sh_lookup=build_p2sh_lookup([s1]))
        self.check_signed(tx)
예제 #2
0
def main():
    if len(sys.argv) != 4:
        print("usage: %s tx-hex-file-path wif-file-path p2sh-file-path" %
              sys.argv[0])
        sys.exit(-1)

    # get the tx
    with open(sys.argv[1], "r") as f:
        tx_hex = f.readline().strip()
    tx = Tx.from_hex(tx_hex)

    # get the WIF
    with open(sys.argv[2], "r") as f:
        wif = f.readline().strip()
    assert is_wif_valid(wif)

    # create the p2sh_lookup
    with open(sys.argv[3], "r") as f:
        p2sh_script_hex = f.readline().strip()
    p2sh_script = h2b(p2sh_script_hex)

    # build a dictionary of script hashes to scripts
    p2sh_lookup = build_p2sh_lookup([p2sh_script])

    # sign the transaction with the given WIF
    sign_tx(tx, wifs=[wif], p2sh_lookup=p2sh_lookup)

    bad_signature_count = tx.bad_signature_count()
    print("tx %s now has %d bad signature(s)" % (tx.id(), bad_signature_count))

    include_unspents = (bad_signature_count > 0)
    print("Here is the tx as hex:\n%s" %
          tx.as_hex(include_unspents=include_unspents))
예제 #3
0
 def test_sign_bitcoind_partially_signed_2_of_2(self):
     # Finish signing a 2 of 2 transaction, that already has one signature signed by bitcoind
     # This tx can be found on testnet3 blockchain
     # txid: 9618820d7037d2f32db798c92665231cd4599326f5bd99cb59d0b723be2a13a2
     raw_script = (
         "522103e33b41f5ed67a77d4c4c54b3e946bd30d15b8f66e42cb29fde059c168851165521"
         "02b92cb20a9fb1eb9656a74eeb7387636cf64cdf502ff50511830328c1b479986452ae"
     )
     p2sh_lookup = build_p2sh_lookup([h2b(raw_script)])
     partially_signed_raw_tx = (
         "010000000196238f11a5fd3ceef4efd5a186a7e6b9217d900418e72aca917cd6a6e634"
         "e74100000000910047304402201b41b471d9dd93cf97eed7cfc39a5767a546f6bfbf3e"
         "0c91ff9ad23ab9770f1f02205ce565666271d055be1f25a7e52e34cbf659f6c70770ff"
         "59bd783a6fcd1be3dd0147522103e33b41f5ed67a77d4c4c54b3e946bd30d15b8f66e4"
         "2cb29fde059c16885116552102b92cb20a9fb1eb9656a74eeb7387636cf64cdf502ff5"
         "0511830328c1b479986452aeffffffff01a0bb0d00000000001976a9143b3beefd6f78"
         "02fa8706983a76a51467bfa36f8b88ac00000000")
     tx = Tx.from_hex(partially_signed_raw_tx)
     tx_out = TxOut(1000000,
                    h2b("a914a10dfa21ee8c33b028b92562f6fe04e60563d3c087"))
     tx.set_unspents([tx_out])
     key = Key.from_text(
         "cThRBRu2jAeshWL3sH3qbqdq9f4jDiDbd1SVz4qjTZD2xL1pdbsx")
     hash160_lookup = build_hash160_lookup([key.secret_exponent()])
     self.assertEqual(tx.bad_signature_count(), 1)
     tx.sign(hash160_lookup=hash160_lookup, p2sh_lookup=p2sh_lookup)
     self.assertEqual(tx.bad_signature_count(), 0)
     self.assertEqual(
         tx.id(),
         "9618820d7037d2f32db798c92665231cd4599326f5bd99cb59d0b723be2a13a2")
예제 #4
0
 def check_tx_can_be_signed(self,
                            tx_u,
                            tx_s,
                            private_keys=[],
                            p2sh_values=[]):
     tx_u_prime = self.unsigned_copy(tx_s)
     tx_s_hex = tx_s.as_hex()
     tx_u_prime.set_unspents(tx_s.unspents)
     tx_u_prime.sign(hash160_lookup=LazySecretExponentDB(
         [Key(pk).wif() for pk in private_keys], {}),
                     p2sh_lookup=build_p2sh_lookup(
                         [h2b(x) for x in p2sh_values]))
     self.check_signed(tx_u_prime)
     tx_hex = tx_u_prime.as_hex()
     self.assertEqual(tx_hex, tx_s_hex)
예제 #5
0
    def test_p2sh_multisig_sequential_signing(self):
        raw_scripts = [
            h2b("52210234abcffd2e80ad01c2ec0276ad02682808169c6fafdd25ebfb60703df272b461"
                "2102e5baaafff8094e4d77ce8b009d5ebc3de9110085ebd3d96e50cc7ce70faf175221"
                "0316ee25e80eb6e6fc734d9c86fa580cbb9c4bfd94a19f0373a22353ececd4db6853ae"
                )
        ]
        txs_in = [
            TxIn(previous_hash=h2b(
                '43c95d14724437bccc102ccf86aba1ac02415524fd1aefa787db886bba52a10c'
            ),
                 previous_index=0)
        ]
        txs_out = [
            TxOut(10000,
                  standard_tx_out_script('3KeGeLFmsbmbVdeMLrWp7WYKcA3tdsB4AR'))
        ]
        spendable = {
            'script_hex':
            'a914c4ed4de526461e3efbb79c8b688a6f9282c0464687',
            'does_seem_spent':
            0,
            'block_index_spent':
            0,
            'coin_value':
            10000,
            'block_index_available':
            0,
            'tx_out_index':
            0,
            'tx_hash_hex':
            '0ca152ba6b88db87a7ef1afd24554102aca1ab86cf2c10ccbc374472145dc943'
        }

        tx__prototype = Tx(version=DEFAULT_VERSION,
                           txs_in=txs_in,
                           txs_out=txs_out,
                           unspents=[Spendable.from_dict(spendable)])
        key_1 = 'Kz6pytJCigYHeMsGLmfHQPJhN5og2wpeSVrU43xWwgHLCAvpsprh'
        key_2 = 'Kz7NHgX7MBySA3RSKj9GexUSN6NepEDoPNugSPr5absRDoKgn2dT'
        for ordered_keys in [(key_1, key_2), (key_2, key_1)]:
            tx = copy.deepcopy(tx__prototype)
            for key in ordered_keys:
                self.assertEqual(tx.bad_signature_count(), 1)
                tx.sign(LazySecretExponentDB([key], {}),
                        p2sh_lookup=build_p2sh_lookup(raw_scripts))
            self.assertEqual(tx.bad_signature_count(), 0)
예제 #6
0
 def test_sign_pay_to_script_multisig(self):
     M, N = 3, 3
     keys = [Key(secret_exponent=i) for i in range(1, N + 2)]
     tx_in = TxIn.coinbase_tx_in(script=b'')
     underlying_script = ScriptMultisig(
         m=M, sec_keys=[key.sec() for key in keys[:N]]).script()
     address = address_for_pay_to_script(underlying_script)
     self.assertEqual(address, "39qEwuwyb2cAX38MFtrNzvq3KV9hSNov3q")
     script = standard_tx_out_script(address)
     tx_out = TxOut(1000000, script)
     tx1 = Tx(version=1, txs_in=[tx_in], txs_out=[tx_out])
     tx2 = tx_utils.create_tx(tx1.tx_outs_as_spendable(), [address])
     hash160_lookup = build_hash160_lookup(key.secret_exponent()
                                           for key in keys[:N])
     p2sh_lookup = build_p2sh_lookup([underlying_script])
     tx2.sign(hash160_lookup=hash160_lookup, p2sh_lookup=p2sh_lookup)
     self.assertEqual(tx2.bad_signature_count(), 0)
예제 #7
0
    def test_bip143_txs(self):
        # these five examples are from BIP 143 at
        # https://github.com/bitcoin/bips/blob/master/bip-0143.mediawiki

        tx_u1, tx_s1 = self.check_bip143_tx(
            "0100000002fff7f7881a8099afa6940d42d1e7f6362bec38171ea3edf433541db4e4ad"
            "969f0000000000eeffffffef51e1b804cc89d182d279655c3aa89e815b1b309fe287d9"
            "b2b55d57b90ec68a0100000000ffffffff02202cb206000000001976a9148280b37df3"
            "78db99f66f85c95a783a76ac7a6d5988ac9093510d000000001976a9143bde42dbee7e"
            "4dbe6a21b2d50ce2f0167faa815988ac11000000",
            "01000000000102fff7f7881a8099afa6940d42d1e7f6362bec38171ea3edf433541db4"
            "e4ad969f00000000494830450221008b9d1dc26ba6a9cb62127b02742fa9d754cd3beb"
            "f337f7a55d114c8e5cdd30be022040529b194ba3f9281a99f2b1c0a19c0489bc22ede9"
            "44ccf4ecbab4cc618ef3ed01eeffffffef51e1b804cc89d182d279655c3aa89e815b1b"
            "309fe287d9b2b55d57b90ec68a0100000000ffffffff02202cb206000000001976a914"
            "8280b37df378db99f66f85c95a783a76ac7a6d5988ac9093510d000000001976a9143b"
            "de42dbee7e4dbe6a21b2d50ce2f0167faa815988ac000247304402203609e17b84f6a7"
            "d30c80bfa610b5b4542f32a8a0d5447a12fb1366d7f01cc44a0220573a954c45183315"
            "61406f90300e8f3358f51928d43c212a8caed02de67eebee0121025476c2e83188368d"
            "a1ff3e292e7acafcdb3566bb0ad253f62fc70f07aeee635711000000",
            [(6.25,
              "2103c9f4836b9a4f77fc0d81f7bcb01b7f1b35916864b9476c241ce9fc198bd25432ac"
              ),
             (6, "00141d0f172a0ecb48aee1be1f2687d2963ae33f71a1")], 2, 2, 1, 17)

        self.assertEqual(
            b2h(tx_s1.hash_prevouts(SIGHASH_ALL)),
            "96b827c8483d4e9b96712b6713a7b68d6e8003a781feba36c31143470b4efd37")
        self.assertEqual(
            b2h(tx_s1.hash_sequence(SIGHASH_ALL)),
            "52b0a642eea2fb7ae638c36f6252b6750293dbe574a806984b8e4d8548339a3b")
        self.assertEqual(
            b2h(tx_s1.hash_outputs(SIGHASH_ALL, 0)),
            "863ef3e1a92afbfdb97f31ad0fc7683ee943e9abcf2501590ff8f6551f47e5e5")

        script = tools.compile(
            "OP_DUP OP_HASH160 %s OP_EQUALVERIFY OP_CHECKSIG" %
            b2h(tx_s1.unspents[1].script[2:]))
        self.assertEqual(
            b2h(
                tx_s1.segwit_signature_preimage(script=script,
                                                tx_in_idx=1,
                                                hash_type=SIGHASH_ALL)),
            "0100000096b827c8483d4e9b96712b6713a7b68d6e8003a781feba36c31143470b4efd"
            "3752b0a642eea2fb7ae638c36f6252b6750293dbe574a806984b8e4d8548339a3bef51"
            "e1b804cc89d182d279655c3aa89e815b1b309fe287d9b2b55d57b90ec68a0100000019"
            "76a9141d0f172a0ecb48aee1be1f2687d2963ae33f71a188ac0046c32300000000ffff"
            "ffff863ef3e1a92afbfdb97f31ad0fc7683ee943e9abcf2501590ff8f6551f47e5e511"
            "00000001000000")

        self.assertEqual(
            b2h(to_bytes_32(tx_s1.signature_for_hash_type_segwit(script, 1,
                                                                 1))),
            "c37af31116d1b27caf68aae9e3ac82f1477929014d5b917657d0eb49478cb670")
        self.check_tx_can_be_signed(tx_u1, tx_s1, [
            0xbbc27228ddcb9209d7fd6f36b02f7dfa6252af40bb2f1cbc7a557da8027ff866,
            0x619c335025c7f4012e556c2a58b2506e30b8511b53ade95ea316fd8c3286feb9
        ])

        tx_u2, tx_s2 = self.check_bip143_tx(
            "0100000001db6b1b20aa0fd7b23880be2ecbd4a98130974cf4748fb66092ac4d3ceb1a"
            "54770100000000feffffff02b8b4eb0b000000001976a914a457b684d7f0d539a46a45"
            "bbc043f35b59d0d96388ac0008af2f000000001976a914fd270b1ee6abcaea97fea7ad"
            "0402e8bd8ad6d77c88ac92040000",
            "01000000000101db6b1b20aa0fd7b23880be2ecbd4a98130974cf4748fb66092ac4d3c"
            "eb1a5477010000001716001479091972186c449eb1ded22b78e40d009bdf0089feffff"
            "ff02b8b4eb0b000000001976a914a457b684d7f0d539a46a45bbc043f35b59d0d96388"
            "ac0008af2f000000001976a914fd270b1ee6abcaea97fea7ad0402e8bd8ad6d77c88ac"
            "02473044022047ac8e878352d3ebbde1c94ce3a10d057c24175747116f8288e5d794d1"
            "2d482f0220217f36a485cae903c713331d877c1f64677e3622ad4010726870540656fe"
            "9dcb012103ad1d8e89212f0b92c74d23bb710c00662ad1470198ac48c43f7d6f93a2a2"
            "687392040000",
            [(10, "a9144733f37cf4db86fbc2efed2500b4f4e49f31202387")], 1, 2, 1,
            1170)
        self.check_tx_can_be_signed(tx_u2, tx_s2, [
            0xeb696a065ef48a2192da5b28b694f87544b30fae8327c4510137a922f32c6dcf
        ], ["001479091972186c449eb1ded22b78e40d009bdf0089"])

        tx_u3, tx_s3 = self.check_bip143_tx(
            "0100000002fe3dc9208094f3ffd12645477b3dc56f60ec4fa8e6f5d67c565d1c6b9216"
            "b36e0000000000ffffffff0815cf020f013ed6cf91d29f4202e8a58726b1ac6c79da47"
            "c23d1bee0a6925f80000000000ffffffff0100f2052a010000001976a914a30741f814"
            "5e5acadf23f751864167f32e0963f788ac00000000",
            "01000000000102fe3dc9208094f3ffd12645477b3dc56f60ec4fa8e6f5d67c565d1c6b"
            "9216b36e000000004847304402200af4e47c9b9629dbecc21f73af989bdaa911f7e6f6"
            "c2e9394588a3aa68f81e9902204f3fcf6ade7e5abb1295b6774c8e0abd94ae62217367"
            "096bc02ee5e435b67da201ffffffff0815cf020f013ed6cf91d29f4202e8a58726b1ac"
            "6c79da47c23d1bee0a6925f80000000000ffffffff0100f2052a010000001976a914a3"
            "0741f8145e5acadf23f751864167f32e0963f788ac000347304402200de66acf452778"
            "9bfda55fc5459e214fa6083f936b430a762c629656216805ac0220396f550692cd3471"
            "71cbc1ef1f51e15282e837bb2b30860dc77c8f78bc8501e503473044022027dc95ad6b"
            "740fe5129e7e62a75dd00f291a2aeb1200b84b09d9e3789406b6c002201a9ecd315dd6"
            "a0e632ab20bbb98948bc0c6fb204f2c286963bb48517a7058e27034721026dccc749ad"
            "c2a9d0d89497ac511f760f45c47dc5ed9cf352a58ac706453880aeadab210255a9626a"
            "ebf5e29c0e6538428ba0d1dcf6ca98ffdf086aa8ced5e0d0215ea465ac00000000",
            [(1.5625,
              "21036d5c20fa14fb2f635474c1dc4ef5909d4568e5569b79fc94d3448486e14685f8ac"
              ),
             (49,
              "00205d1b56b63d714eebe542309525f484b7e9d6f686b3781b6f61ef925d66d6f6a0"
              )], 2, 1, 1, 0)

        tx_u4, tx_s4 = self.check_bip143_tx(
            "0100000002e9b542c5176808107ff1df906f46bb1f2583b16112b95ee5380665ba7fcf"
            "c0010000000000ffffffff80e68831516392fcd100d186b3c2c7b95c80b53c77e77c35"
            "ba03a66b429a2a1b0000000000ffffffff0280969800000000001976a914de4b231626"
            "ef508c9a74a8517e6783c0546d6b2888ac80969800000000001976a9146648a8cd4531"
            "e1ec47f35916de8e259237294d1e88ac00000000",
            "01000000000102e9b542c5176808107ff1df906f46bb1f2583b16112b95ee5380665ba"
            "7fcfc0010000000000ffffffff80e68831516392fcd100d186b3c2c7b95c80b53c77e7"
            "7c35ba03a66b429a2a1b0000000000ffffffff0280969800000000001976a914de4b23"
            "1626ef508c9a74a8517e6783c0546d6b2888ac80969800000000001976a9146648a8cd"
            "4531e1ec47f35916de8e259237294d1e88ac02483045022100f6a10b8604e6dc910194"
            "b79ccfc93e1bc0ec7c03453caaa8987f7d6c3413566002206216229ede9b4d6ec2d325"
            "be245c5b508ff0339bf1794078e20bfe0babc7ffe683270063ab68210392972e2eb617"
            "b2388771abe27235fd5ac44af8e61693261550447a4c3e39da98ac0247304402200325"
            "21802a76ad7bf74d0e2c218b72cf0cbc867066e2e53db905ba37f130397e02207709e2"
            "188ed7f08f4c952d9d13986da504502b8c3be59617e043552f506c46ff83275163ab68"
            "210392972e2eb617b2388771abe27235fd5ac44af8e61693261550447a4c3e39da98ac"
            "00000000", [
                (0.16777215,
                 "0020ba468eea561b26301e4cf69fa34bde4ad60c81e70f059f045ca9a79931004a4d"
                 ),
                (0.16777215,
                 "0020d9bbfbe56af7c4b7f960a70d7ea107156913d9e5a26b0a71429df5e097ca6537"
                 ),
            ], 2, 2, 1, 0)

        tx_u5, tx_s5 = self.check_bip143_tx(
            "010000000136641869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca29787"
            "b96e0100000000ffffffff0200e9a435000000001976a914389ffce9cd9ae88dcc0631"
            "e88a821ffdbe9bfe2688acc0832f05000000001976a9147480a33f950689af511e6e84"
            "c138dbbd3c3ee41588ac00000000",
            "0100000000010136641869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca2"
            "9787b96e0100000023220020a16b5755f7f6f96dbd65f5f0d6ab9418b89af4b1f14a1b"
            "b8a09062c35f0dcb54ffffffff0200e9a435000000001976a914389ffce9cd9ae88dcc"
            "0631e88a821ffdbe9bfe2688acc0832f05000000001976a9147480a33f950689af511e"
            "6e84c138dbbd3c3ee41588ac080047304402206ac44d672dac41f9b00e28f4df20c52e"
            "eb087207e8d758d76d92c6fab3b73e2b0220367750dbbe19290069cba53d096f44530e"
            "4f98acaa594810388cf7409a1870ce01473044022068c7946a43232757cbdf9176f009"
            "a928e1cd9a1a8c212f15c1e11ac9f2925d9002205b75f937ff2f9f3c1246e547e54f62"
            "e027f64eefa2695578cc6432cdabce271502473044022059ebf56d98010a932cf8ecfe"
            "c54c48e6139ed6adb0728c09cbe1e4fa0915302e022007cd986c8fa870ff5d2b3a8913"
            "9c9fe7e499259875357e20fcbb15571c76795403483045022100fbefd94bd0a488d50b"
            "79102b5dad4ab6ced30c4069f1eaa69a4b5a763414067e02203156c6a5c9cf88f91265"
            "f5a942e96213afae16d83321c8b31bb342142a14d16381483045022100a5263ea0553b"
            "a89221984bd7f0b13613db16e7a70c549a86de0cc0444141a407022005c360ef0ae5a5"
            "d4f9f2f87a56c1546cc8268cab08c73501d6b3be2e1e1a8a08824730440220525406a1"
            "482936d5a21888260dc165497a90a15669636d8edca6b9fe490d309c022032af0c646a"
            "34a44d1f4576bf6a4a74b67940f8faa84c7df9abe12a01a11e2b4783cf56210307b8ae"
            "49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba32103b28f0c28"
            "bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21034b8113d703"
            "413d57761b8b9781957b8c0ac1dfe69f492580ca4195f50376ba4a21033400f6afecb8"
            "33092a9a21cfdf1ed1376e58c5d1f47de74683123987e967a8f42103a6d48b1131e94b"
            "a04d9737d61acdaa1322008af9602b3b14862c07a1789aac162102d8b661b0b3302ee2"
            "f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b56ae00000000",
            [(9.87654321, "a9149993a429037b5d912407a71c252019287b8d27a587")],
            1, 2, 1, 0)

        tx_u5prime = self.unsigned_copy(tx_s5)
        tx_s_hex = tx_s5.as_hex()
        tx_u5prime.set_unspents(tx_s5.unspents)

        ss = [
            "56210307b8ae49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba3"
            "2103b28f0c28bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21"
            "034b8113d703413d57761b8b9781957b8c0ac1dfe69f492580ca4195f50376ba4a2103"
            "3400f6afecb833092a9a21cfdf1ed1376e58c5d1f47de74683123987e967a8f42103a6"
            "d48b1131e94ba04d9737d61acdaa1322008af9602b3b14862c07a1789aac162102d8b6"
            "61b0b3302ee2f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b56ae",
            "0020a16b5755f7f6f96dbd65f5f0d6ab9418b89af4b1f14a1bb8a09062c35f0dcb54"
        ]
        p2sh_lookup = build_p2sh_lookup([h2b(x) for x in ss])
        for se, sighash_type in [
            (0x730fff80e1413068a05b57d6a58261f07551163369787f349438ea38ca80fac6,
             SIGHASH_ALL),
            (0x11fa3d25a17cbc22b29c44a484ba552b5a53149d106d3d853e22fdd05a2d8bb3,
             SIGHASH_NONE),
            (0x77bf4141a87d55bdd7f3cd0bdccf6e9e642935fec45f2f30047be7b799120661,
             SIGHASH_SINGLE),
            (0x14af36970f5025ea3e8b5542c0f8ebe7763e674838d08808896b63c3351ffe49,
             SIGHASH_ANYONECANPAY | SIGHASH_ALL),
            (0xfe9a95c19eef81dde2b95c1284ef39be497d128e2aa46916fb02d552485e0323,
             SIGHASH_ANYONECANPAY | SIGHASH_NONE),
            (0x428a7aee9f0c2af0cd19af3cf1c78149951ea528726989b2e83e4778d2c3f890,
             SIGHASH_ANYONECANPAY | SIGHASH_SINGLE),
        ]:
            tx_u5prime.sign(hash_type=sighash_type,
                            hash160_lookup=build_hash160_lookup([se]),
                            p2sh_lookup=p2sh_lookup)

        self.check_signed(tx_u5prime)
        tx_hex = tx_u5prime.as_hex()
        self.assertEqual(tx_hex, tx_s_hex)

        self.assertEqual(
            b2h(tx_s5.hash_prevouts(SIGHASH_ALL)),
            "74afdc312af5183c4198a40ca3c1a275b485496dd3929bca388c4b5e31f7aaa0")
        self.assertEqual(
            b2h(tx_s5.hash_sequence(SIGHASH_ALL)),
            "3bb13029ce7b1f559ef5e747fcac439f1455a2ec7c5f09b72290795e70665044")
        self.assertEqual(
            b2h(tx_s5.hash_outputs(SIGHASH_ALL, 0)),
            "bc4d309071414bed932f98832b27b4d76dad7e6c1346f487a8fdbb8eb90307cc")
        self.assertEqual(
            b2h(tx_s5.hash_outputs(SIGHASH_SINGLE, 0)),
            "9efe0c13a6b16c14a41b04ebe6a63f419bdacb2f8705b494a43063ca3cd4f708")
        script = tx_s5.txs_in[0].witness[-1]
        self.assertEqual(
            b2h(
                tx_s5.segwit_signature_preimage(script=script,
                                                tx_in_idx=0,
                                                hash_type=SIGHASH_ALL)),
            "0100000074afdc312af5183c4198a40ca3c1a275b485496dd3929bca388c4b5e31f7aa"
            "a03bb13029ce7b1f559ef5e747fcac439f1455a2ec7c5f09b72290795e706650443664"
            "1869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca29787b96e01000000cf"
            "56210307b8ae49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba3"
            "2103b28f0c28bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21"
            "034b8113d703413d57761b8b9781957b8c0ac1dfe69f492580ca4195f50376ba4a2103"
            "3400f6afecb833092a9a21cfdf1ed1376e58c5d1f47de74683123987e967a8f42103a6"
            "d48b1131e94ba04d9737d61acdaa1322008af9602b3b14862c07a1789aac162102d8b6"
            "61b0b3302ee2f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b56aeb168de"
            "3a00000000ffffffffbc4d309071414bed932f98832b27b4d76dad7e6c1346f487a8fd"
            "bb8eb90307cc0000000001000000")

        self.assertEqual(
            b2h(
                tx_s5.segwit_signature_preimage(script=script,
                                                tx_in_idx=0,
                                                hash_type=SIGHASH_NONE)),
            "0100000074afdc312af5183c4198a40ca3c1a275b485496dd3929bca388c4b5e31f7aa"
            "a000000000000000000000000000000000000000000000000000000000000000003664"
            "1869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca29787b96e01000000cf"
            "56210307b8ae49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba3"
            "2103b28f0c28bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21"
            "034b8113d703413d57761b8b9781957b8c0ac1dfe69f492580ca4195f50376ba4a2103"
            "3400f6afecb833092a9a21cfdf1ed1376e58c5d1f47de74683123987e967a8f42103a6"
            "d48b1131e94ba04d9737d61acdaa1322008af9602b3b14862c07a1789aac162102d8b6"
            "61b0b3302ee2f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b56aeb168de"
            "3a00000000ffffffff0000000000000000000000000000000000000000000000000000"
            "0000000000000000000002000000")

        self.assertEqual(
            b2h(
                tx_s5.segwit_signature_preimage(script=script,
                                                tx_in_idx=0,
                                                hash_type=SIGHASH_SINGLE)),
            "0100000074afdc312af5183c4198a40ca3c1a275b485496dd3929bca388c4b5e31f7aa"
            "a000000000000000000000000000000000000000000000000000000000000000003664"
            "1869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca29787b96e01000000cf"
            "56210307b8ae49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba3"
            "2103b28f0c28bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21"
            "034b8113d703413d57761b8b9781957b8c0ac1dfe69f492580ca4195f50376ba4a2103"
            "3400f6afecb833092a9a21cfdf1ed1376e58c5d1f47de74683123987e967a8f42103a6"
            "d48b1131e94ba04d9737d61acdaa1322008af9602b3b14862c07a1789aac162102d8b6"
            "61b0b3302ee2f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b56aeb168de"
            "3a00000000ffffffff9efe0c13a6b16c14a41b04ebe6a63f419bdacb2f8705b494a430"
            "63ca3cd4f7080000000003000000")

        self.assertEqual(
            b2h(
                tx_s5.segwit_signature_preimage(script=script,
                                                tx_in_idx=0,
                                                hash_type=SIGHASH_ALL
                                                | SIGHASH_ANYONECANPAY)),
            "0100000000000000000000000000000000000000000000000000000000000000000000"
            "0000000000000000000000000000000000000000000000000000000000000000003664"
            "1869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca29787b96e01000000cf"
            "56210307b8ae49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba3"
            "2103b28f0c28bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21"
            "034b8113d703413d57761b8b9781957b8c0ac1dfe69f492580ca4195f50376ba4a2103"
            "3400f6afecb833092a9a21cfdf1ed1376e58c5d1f47de74683123987e967a8f42103a6"
            "d48b1131e94ba04d9737d61acdaa1322008af9602b3b14862c07a1789aac162102d8b6"
            "61b0b3302ee2f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b56aeb168de"
            "3a00000000ffffffffbc4d309071414bed932f98832b27b4d76dad7e6c1346f487a8fd"
            "bb8eb90307cc0000000081000000")

        self.assertEqual(
            b2h(
                tx_s5.segwit_signature_preimage(script=script,
                                                tx_in_idx=0,
                                                hash_type=SIGHASH_NONE
                                                | SIGHASH_ANYONECANPAY)),
            "0100000000000000000000000000000000000000000000000000000000000000000000"
            "0000000000000000000000000000000000000000000000000000000000000000003664"
            "1869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca29787b96e01000000cf"
            "56210307b8ae49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba3"
            "2103b28f0c28bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21"
            "034b8113d703413d57761b8b9781957b8c0ac1dfe69f492580ca4195f50376ba4a2103"
            "3400f6afecb833092a9a21cfdf1ed1376e58c5d1f47de74683123987e967a8f42103a6"
            "d48b1131e94ba04d9737d61acdaa1322008af9602b3b14862c07a1789aac162102d8b6"
            "61b0b3302ee2f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b56aeb168de"
            "3a00000000ffffffff0000000000000000000000000000000000000000000000000000"
            "0000000000000000000082000000")

        self.assertEqual(
            b2h(
                tx_s5.segwit_signature_preimage(script=script,
                                                tx_in_idx=0,
                                                hash_type=SIGHASH_SINGLE
                                                | SIGHASH_ANYONECANPAY)),
            "0100000000000000000000000000000000000000000000000000000000000000000000"
            "0000000000000000000000000000000000000000000000000000000000000000003664"
            "1869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca29787b96e01000000cf"
            "56210307b8ae49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba3"
            "2103b28f0c28bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21"
            "034b8113d703413d57761b8b9781957b8c0ac1dfe69f492580ca4195f50376ba4a2103"
            "3400f6afecb833092a9a21cfdf1ed1376e58c5d1f47de74683123987e967a8f42103a6"
            "d48b1131e94ba04d9737d61acdaa1322008af9602b3b14862c07a1789aac162102d8b6"
            "61b0b3302ee2f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b56aeb168de"
            "3a00000000ffffffff9efe0c13a6b16c14a41b04ebe6a63f419bdacb2f8705b494a430"
            "63ca3cd4f7080000000083000000")

        tx = Tx.from_hex(
            "010000000169c12106097dc2e0526493ef67f21269fe888ef05c7a3a5dacab38e1ac83"
            "87f14c1d000000ffffffff0101000000000000000000000000")
        tx.set_witness(0, [
            h2b(x) for x in [
                "30450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dc"
                "c9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c5"
                "3e01",
                "02a9781d66b61fb5a7ef00ac5ad5bc6ffc78be7b44a566e3c87870e1079368df4c",
                "ad4830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d8915"
                "56dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae6"
                "26c53e01"
            ]
        ])
        tx = Tx.from_hex(
            "0100000000010169c12106097dc2e0526493ef67f21269fe888ef05c7a3a5dacab38e1"
            "ac8387f14c1d000000ffffffff01010000000000000000034830450220487fb382c497"
            "4de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f8"
            "45d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e012102a9781d66b61f"
            "b5a7ef00ac5ad5bc6ffc78be7b44a566e3c87870e1079368df4c4aad4830450220487f"
            "b382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf9"
            "5feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0100000000"
        )
        tx_hex = tx.as_hex()
        print(tx)
        print(tx_hex)
        tx = Tx.from_hex(
            "010000000169c12106097dc2e0526493ef67f21269fe888ef05c7a3a5dacab38e1ac83"
            "87f14c1d000000ffffffff0101000000000000000000000000")
        self.assertEqual(
            tx_hex,
            "0100000000010169c12106097dc2e0526493ef67f21269fe888ef05c7a3a5dacab38e1"
            "ac8387f14c1d000000ffffffff01010000000000000000034830450220487fb382c497"
            "4de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f8"
            "45d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e012102a9781d66b61f"
            "b5a7ef00ac5ad5bc6ffc78be7b44a566e3c87870e1079368df4c4aad4830450220487f"
            "b382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf9"
            "5feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0100000000"
        )

        tx_u6, tx_s6 = self.check_bip143_tx(
            "010000000169c12106097dc2e0526493ef67f21269fe888ef05c7a3a5dacab38e1ac83"
            "87f14c1d000000ffffffff0101000000000000000000000000",
            "0100000000010169c12106097dc2e0526493ef67f21269fe888ef05c7a3a5dacab38e1"
            "ac8387f14c1d000000ffffffff01010000000000000000034830450220487fb382c497"
            "4de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f8"
            "45d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e012102a9781d66b61f"
            "b5a7ef00ac5ad5bc6ffc78be7b44a566e3c87870e1079368df4c4aad4830450220487f"
            "b382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf9"
            "5feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0100000000",
            [(0.002,
              "00209e1be07558ea5cc8e02ed1d80c0911048afad949affa36d5c3951e3159dbea19"
              )], 1, 1, 1, 0)

        tx_u7, tx_s7 = self.check_bip143_tx(
            "01000000019275cb8d4a485ce95741c013f7c0d28722160008021bb469a11982d47a66"
            "28964c1d000000ffffffff0101000000000000000000000000",
            "010000000001019275cb8d4a485ce95741c013f7c0d28722160008021bb469a11982d4"
            "7a6628964c1d000000ffffffff0101000000000000000007004830450220487fb382c4"
            "974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48"
            "f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0148304502205286"
            "f726690b2e9b0207f0345711e63fa7012045b9eb0f19c2458ce1db90cf43022100e89f"
            "17f86abc5b149eba4115d4f128bcf45d77fb3ecdd34f594091340c0395960101022102"
            "966f109c54e85d3aee8321301136cedeb9fc710fdef58a9de8a73942f8e567c021034f"
            "fc99dd9a79dd3cb31e2ab3e0b09e0e67db41ac068c625cd1f491576016c84e9552af48"
            "30450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dc"
            "c9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c5"
            "3e0148304502205286f726690b2e9b0207f0345711e63fa7012045b9eb0f19c2458ce1"
            "db90cf43022100e89f17f86abc5b149eba4115d4f128bcf45d77fb3ecdd34f59409134"
            "0c039596017500000000",
            [(0.002,
              "00209b66c15b4e0b4eb49fa877982cafded24859fe5b0e2dbfbe4f0df1de7743fd52"
              )], 1, 1, 1, 0)
        print(tx_s7.txs_in[0])