Python bitcoin.core() Examples

The following are 19 code examples of bitcoin.core(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module bitcoin , or try the search function .
Example #1
Source File: tx_builder.py    From hashmal with GNU General Public License v3.0 6 votes vote down vote up 
def build_transaction(self):
        self.tx_widget.clear()
        self.sighash_widget.clear()
        self.tx = tx = Transaction()
        tx.nVersion = self.version_edit.get_amount()
        tx.vin = self.inputs_tree.get_inputs()
        tx.vout = self.outputs_tree.get_outputs()
        tx.nLockTime = self.locktime_edit.get_amount()

        for name, w in self.tx_field_widgets:
            if not name in [field[0] for field in tx.fields]:
                continue
            value = str(w.text())
            default = getattr(tx, name)
            if isinstance(default, int):
                value = w.get_amount()
            setattr(tx, name, value)

        self.raw_tx.setText(bitcoin.core.b2x(tx.serialize()))

        self.tx_widget.set_tx(tx)
        self.sighash_widget.set_tx(tx)
Example #2
Source File: test_segwit.py    From replace-by-fee-tools with GNU General Public License v3.0 6 votes vote down vote up 
def test_checkblock(self):
        # (No witness) coinbase generated by Bitcoin Core
        str_coinbase = '01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff03520101ffffffff0100f2052a01000000232102960c90bc04a631cb17922e4f5d80ac75fd590a88b8baaa5a3d5086ac85e4d788ac00000000'
        # No witness transaction
        str_tx = '0100000001e3d0c1d051a3abe79d5951dcab86f71d8926aff5caed5ff9bd72cb593e4ebaf5010000006b483045022100a28e1c57e160296953e1af85c5034bb1b907c12c50367da75ba547874a8a8c52022040682e888ddce7fd5c72519a9f28f22f5164c8af864d33332bbc7f65596ad4ae012102db30394fd5cc8288bed607b9382338240c014a98c9c0febbfb380db74ceb30a3ffffffff020d920000000000001976a914ad781c8ffcc18b2155433cba2da4601180a66eef88aca3170000000000001976a914bacb1c4b0725e61e385c7093b4260533953c8e1688ac00000000'
        # SegWit transaction
        str_w_tx = '0100000000010115e180dc28a2327e687facc33f10f2a20da717e5548406f7ae8b4c811072f8560100000000ffffffff0100b4f505000000001976a9141d7cd6c75c2e86f4cbf98eaed221b30bd9a0b92888ac02483045022100df7b7e5cda14ddf91290e02ea10786e03eb11ee36ec02dd862fe9a326bbcb7fd02203f5b4496b667e6e281cc654a2da9e4f08660c620a1051337fa8965f727eb19190121038262a6c6cec93c2d3ecd6c6072efea86d02ff8e3328bbd0242b20af3425990ac00000000'
        witness_nonce = _bytes(random.getrandbits(8) for _ in range(32))

        coinbase = CMutableTransaction.deserialize(x(str_coinbase))
        coinbase.wit = CTxWitness([CTxInWitness(CScriptWitness([witness_nonce]))])

        tx_legacy = CTransaction.deserialize(x(str_tx))
        tx_segwit = CTransaction.deserialize(x(str_w_tx))

        witness_merkle_root = CBlock.build_witness_merkle_tree_from_txs((coinbase, tx_legacy, tx_segwit))[-1]

        commitment = Hash(witness_merkle_root + witness_nonce)
        commitment_script = bitcoin.core.WITNESS_COINBASE_SCRIPTPUBKEY_MAGIC + commitment
        coinbase.vout.append(CTxOut(0, CScript(commitment_script)))

        block = CBlock(2, b'\x00'*32, b'\x00'*32, 0, 0, 0, (coinbase, tx_legacy, tx_segwit))

        CheckBlock(block, False, True)
Example #3
Source File: wallet.py    From replace-by-fee-tools with GNU General Public License v3.0 6 votes vote down vote up 
def from_pubkey(cls, pubkey, accept_invalid=False):
        """Create a P2PKH bitcoin address from a pubkey

        Raises CBitcoinAddressError if pubkey is invalid, unless accept_invalid
        is True.

        The pubkey must be a bytes instance; CECKey instances are not accepted.
        """
        if not isinstance(pubkey, bytes):
            raise TypeError('pubkey must be bytes instance; got %r' % pubkey.__class__)

        if not accept_invalid:
            if not isinstance(pubkey, bitcoin.core.key.CPubKey):
                pubkey = bitcoin.core.key.CPubKey(pubkey)
            if not pubkey.is_fullyvalid:
                raise CBitcoinAddressError('invalid pubkey')

        pubkey_hash = bitcoin.core.Hash160(pubkey)
        return P2PKHBitcoinAddress.from_bytes(pubkey_hash)
Example #4
Source File: test_segwit.py    From replace-by-fee-tools with GNU General Public License v3.0 6 votes vote down vote up 
def test_checkblock(self):
        # (No witness) coinbase generated by Bitcoin Core
        str_coinbase = '01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff03520101ffffffff0100f2052a01000000232102960c90bc04a631cb17922e4f5d80ac75fd590a88b8baaa5a3d5086ac85e4d788ac00000000'
        # No witness transaction
        str_tx = '0100000001e3d0c1d051a3abe79d5951dcab86f71d8926aff5caed5ff9bd72cb593e4ebaf5010000006b483045022100a28e1c57e160296953e1af85c5034bb1b907c12c50367da75ba547874a8a8c52022040682e888ddce7fd5c72519a9f28f22f5164c8af864d33332bbc7f65596ad4ae012102db30394fd5cc8288bed607b9382338240c014a98c9c0febbfb380db74ceb30a3ffffffff020d920000000000001976a914ad781c8ffcc18b2155433cba2da4601180a66eef88aca3170000000000001976a914bacb1c4b0725e61e385c7093b4260533953c8e1688ac00000000'
        # SegWit transaction
        str_w_tx = '0100000000010115e180dc28a2327e687facc33f10f2a20da717e5548406f7ae8b4c811072f8560100000000ffffffff0100b4f505000000001976a9141d7cd6c75c2e86f4cbf98eaed221b30bd9a0b92888ac02483045022100df7b7e5cda14ddf91290e02ea10786e03eb11ee36ec02dd862fe9a326bbcb7fd02203f5b4496b667e6e281cc654a2da9e4f08660c620a1051337fa8965f727eb19190121038262a6c6cec93c2d3ecd6c6072efea86d02ff8e3328bbd0242b20af3425990ac00000000'
        witness_nonce = _bytes(random.getrandbits(8) for _ in range(32))

        coinbase = CMutableTransaction.deserialize(x(str_coinbase))
        coinbase.wit = CTxWitness([CTxInWitness(CScriptWitness([witness_nonce]))])

        tx_legacy = CTransaction.deserialize(x(str_tx))
        tx_segwit = CTransaction.deserialize(x(str_w_tx))

        witness_merkle_root = CBlock.build_witness_merkle_tree_from_txs((coinbase, tx_legacy, tx_segwit))[-1]

        commitment = Hash(witness_merkle_root + witness_nonce)
        commitment_script = bitcoin.core.WITNESS_COINBASE_SCRIPTPUBKEY_MAGIC + commitment
        coinbase.vout.append(CTxOut(0, CScript(commitment_script)))

        block = CBlock(2, b'\x00'*32, b'\x00'*32, 0, 0, 0, (coinbase, tx_legacy, tx_segwit))

        CheckBlock(block, False, True)
Example #5
Source File: wallet.py    From replace-by-fee-tools with GNU General Public License v3.0 6 votes vote down vote up 
def from_pubkey(cls, pubkey, accept_invalid=False):
        """Create a P2PKH bitcoin address from a pubkey

        Raises CBitcoinAddressError if pubkey is invalid, unless accept_invalid
        is True.

        The pubkey must be a bytes instance; CECKey instances are not accepted.
        """
        if not isinstance(pubkey, bytes):
            raise TypeError('pubkey must be bytes instance; got %r' % pubkey.__class__)

        if not accept_invalid:
            if not isinstance(pubkey, bitcoin.core.key.CPubKey):
                pubkey = bitcoin.core.key.CPubKey(pubkey)
            if not pubkey.is_fullyvalid:
                raise CBitcoinAddressError('invalid pubkey')

        pubkey_hash = bitcoin.core.Hash160(pubkey)
        return P2PKHBitcoinAddress.from_bytes(pubkey_hash)
Example #6
Source File: wallet.py    From checklocktimeverify-demos with GNU General Public License v3.0 6 votes vote down vote up 
def from_pubkey(cls, pubkey, accept_invalid=False):
        """Create a P2PKH bitcoin address from a pubkey

        Raises CBitcoinAddressError if pubkey is invalid, unless accept_invalid
        is True.

        The pubkey must be a bytes instance; CECKey instances are not accepted.
        """
        if not isinstance(pubkey, bytes):
            raise TypeError('pubkey must be bytes instance; got %r' % pubkey.__class__)

        if not accept_invalid:
            if not isinstance(pubkey, bitcoin.core.key.CPubKey):
                pubkey = bitcoin.core.key.CPubKey(pubkey)
            if not pubkey.is_fullyvalid:
                raise CBitcoinAddressError('invalid pubkey')

        pubkey_hash = bitcoin.core.Hash160(pubkey)
        return P2PKHBitcoinAddress.from_bytes(pubkey_hash)
Example #7
Source File: tx.py    From hashmal with GNU General Public License v3.0 6 votes vote down vote up 
def set_tx(self, tx):
        self.version_edit.setText(str(tx.nVersion))

        self.inputs_tree.model.set_tx(tx)
        self.outputs_tree.model.set_tx(tx)

        self.locktime_edit.set_locktime(tx.nLockTime)

        for name, w in self.field_widgets.items():
            # We already handle these four.
            if name in ['nVersion', 'vin', 'vout', 'nLockTime']:
                continue
            if not name in [field[0] for field in tx.fields]:
                continue
            value = getattr(tx, name)
            w.setText(str(value))

        self.tx_properties.set_tx(tx)

        self.tx_id.setText(bitcoin.core.b2lx(tx.GetHash()))
Example #8
Source File: bitcoin_signer.py    From hermit with Apache License 2.0 6 votes vote down vote up 
def generate_multisig_address(redeemscript: str, testnet: bool = False) -> str:
    """
    Generates a P2SH-multisig Bitcoin address from a redeem script

    Args:
        redeemscript: hex-encoded redeem script
                      use generate_multisig_redeem_script to create
                      the redeem script from three compressed public keys
         testnet: Should the address be testnet or mainnet?

    Example:
        TODO
    """

    if testnet:
        bitcoin.SelectParams('testnet')

    redeem_script = CScript(bitcoin.core.x(redeemscript))

    addr = P2SHBitcoinAddress.from_redeemScript(redeem_script)

    return str(addr)
Example #9
Source File: wallet.py    From checklocktimeverify-demos with GNU General Public License v3.0 6 votes vote down vote up 
def from_pubkey(cls, pubkey, accept_invalid=False):
        """Create a P2PKH bitcoin address from a pubkey

        Raises CBitcoinAddressError if pubkey is invalid, unless accept_invalid
        is True.

        The pubkey must be a bytes instance; CECKey instances are not accepted.
        """
        if not isinstance(pubkey, bytes):
            raise TypeError('pubkey must be bytes instance; got %r' % pubkey.__class__)

        if not accept_invalid:
            if not isinstance(pubkey, bitcoin.core.key.CPubKey):
                pubkey = bitcoin.core.key.CPubKey(pubkey)
            if not pubkey.is_fullyvalid:
                raise CBitcoinAddressError('invalid pubkey')

        pubkey_hash = bitcoin.core.Hash160(pubkey)
        return P2PKHBitcoinAddress.from_bytes(pubkey_hash)
Example #10
Source File: dash.py    From dashvend with MIT License 5 votes vote down vote up 
def msg_deser(cls, f, protover=bitcoin.net.PROTO_VERSION):
        c = cls()
        c.tx = bitcoin.core.CTransaction.stream_deserialize(f)
        return c
Example #11
Source File: dash.py    From dashvend with MIT License 5 votes vote down vote up 
def __init__(self, protover=bitcoin.net.PROTO_VERSION):
        super(msg_ix, self).__init__(protover)
        self.tx = bitcoin.core.CTransaction()
Example #12
Source File: tx_analyzer.py    From hashmal with GNU General Public License v3.0 5 votes vote down vote up 
def deserialize(self):
        self.tx_widget.set_tx(self.tx)
        self.inputs_table_model.set_tx(self.tx)
        self.info('Deserialized transaction %s' % bitcoin.core.b2lx(self.tx.GetHash()))
Example #13
Source File: tx_analyzer.py    From hashmal with GNU General Public License v3.0 5 votes vote down vote up 
def do_verify_input(self, tx, in_idx):
        if tx.is_coinbase():
            self.result_edit.setText('Error: Cannot verify coinbase transactions.')
            self.error('Attempted to verify coinbase transaction.')
            return False
        raw_prev_tx = None
        tx_in = tx.vin[in_idx]
        txid = b2lx(tx_in.prevout.hash)
        prev_out_n = tx_in.prevout.n

        try:
            raw_prev_tx = self.handler.download_blockchain_data('raw_transaction', txid)
        except Exception as e:
            self.error(str(e))
            return False

        try:
            prev_tx = Transaction.deserialize(raw_prev_tx.decode('hex'))
            result = bitcoin.core.scripteval.VerifyScript(tx_in.scriptSig, prev_tx.vout[prev_out_n].scriptPubKey, tx, in_idx)
            self.result_edit.setText('Successfully verified input {}'.format(in_idx))
            self.inputs_table_model.set_verified(in_idx, True)
        except Exception as e:
            self.result_edit.setText(str(e))
            self.inputs_table_model.set_verified(in_idx, False)
            self.error(str(e))
            return False

        return True
Example #14
Source File: wallet.py    From replace-by-fee-tools with GNU General Public License v3.0 5 votes vote down vote up 
def __init__(self, secret, compressed=True):
        self._cec_key = bitcoin.core.key.CECKey()
        self._cec_key.set_secretbytes(secret)
        self._cec_key.set_compressed(compressed)

        self.pub = bitcoin.core.key.CPubKey(self._cec_key.get_pubkey(), self._cec_key)
Example #15
Source File: wallet.py    From checklocktimeverify-demos with GNU General Public License v3.0 5 votes vote down vote up 
def __init__(self, secret, compressed=True):
        self._cec_key = bitcoin.core.key.CECKey()
        self._cec_key.set_secretbytes(secret)
        self._cec_key.set_compressed(compressed)

        self.pub = bitcoin.core.key.CPubKey(self._cec_key.get_pubkey(), self._cec_key)
Example #16
Source File: wallet.py    From replace-by-fee-tools with GNU General Public License v3.0 5 votes vote down vote up 
def __init__(self, secret, compressed=True):
        self._cec_key = bitcoin.core.key.CECKey()
        self._cec_key.set_secretbytes(secret)
        self._cec_key.set_compressed(compressed)

        self.pub = bitcoin.core.key.CPubKey(self._cec_key.get_pubkey(), self._cec_key)
Example #17
Source File: wallet.py    From checklocktimeverify-demos with GNU General Public License v3.0 4 votes vote down vote up 
def from_scriptPubKey(cls, scriptPubKey, accept_non_canonical_pushdata=True, accept_bare_checksig=True):
        """Convert a scriptPubKey to a P2PKH address

        Raises CBitcoinAddressError if the scriptPubKey isn't of the correct
        form.

        accept_non_canonical_pushdata - Allow non-canonical pushes (default True)

        accept_bare_checksig          - Treat bare-checksig as P2PKH scriptPubKeys (default True)
        """
        if accept_non_canonical_pushdata:
            # Canonicalize script pushes
            scriptPubKey = script.CScript(scriptPubKey) # in case it's not a CScript instance yet

            try:
                scriptPubKey = script.CScript(tuple(scriptPubKey)) # canonicalize
            except bitcoin.core.script.CScriptInvalidError:
                raise CBitcoinAddressError('not a P2PKH scriptPubKey: script is invalid')

        if (len(scriptPubKey) == 25
                and _bord(scriptPubKey[0])  == script.OP_DUP
                and _bord(scriptPubKey[1])  == script.OP_HASH160
                and _bord(scriptPubKey[2])  == 0x14
                and _bord(scriptPubKey[23]) == script.OP_EQUALVERIFY
                and _bord(scriptPubKey[24]) == script.OP_CHECKSIG):
            return cls.from_bytes(scriptPubKey[3:23], bitcoin.params.BASE58_PREFIXES['PUBKEY_ADDR'])

        elif accept_bare_checksig:
            pubkey = None

            # We can operate on the raw bytes directly because we've
            # canonicalized everything above.
            if (len(scriptPubKey) == 35 # compressed
                  and _bord(scriptPubKey[0])  == 0x21
                  and _bord(scriptPubKey[34]) == script.OP_CHECKSIG):

                pubkey = scriptPubKey[1:34]

            elif (len(scriptPubKey) == 67 # uncompressed
                    and _bord(scriptPubKey[0]) == 0x41
                    and _bord(scriptPubKey[66]) == script.OP_CHECKSIG):

                pubkey = scriptPubKey[1:65]

            if pubkey is not None:
                return cls.from_pubkey(pubkey, accept_invalid=True)

        raise CBitcoinAddressError('not a P2PKH scriptPubKey')
Example #18
Source File: wallet.py    From replace-by-fee-tools with GNU General Public License v3.0 4 votes vote down vote up 
def from_scriptPubKey(cls, scriptPubKey, accept_non_canonical_pushdata=True, accept_bare_checksig=True):
        """Convert a scriptPubKey to a P2PKH address

        Raises CBitcoinAddressError if the scriptPubKey isn't of the correct
        form.

        accept_non_canonical_pushdata - Allow non-canonical pushes (default True)

        accept_bare_checksig          - Treat bare-checksig as P2PKH scriptPubKeys (default True)
        """
        if accept_non_canonical_pushdata:
            # Canonicalize script pushes
            scriptPubKey = script.CScript(scriptPubKey) # in case it's not a CScript instance yet

            try:
                scriptPubKey = script.CScript(tuple(scriptPubKey)) # canonicalize
            except bitcoin.core.script.CScriptInvalidError:
                raise CBitcoinAddressError('not a P2PKH scriptPubKey: script is invalid')

        if scriptPubKey.is_witness_v0_keyhash():
            return cls.from_bytes(scriptPubKey[2:22], bitcoin.params.BASE58_PREFIXES['PUBKEY_ADDR'])
        elif scriptPubKey.is_witness_v0_nested_keyhash():
            return cls.from_bytes(scriptPubKey[3:23], bitcoin.params.BASE58_PREFIXES['PUBKEY_ADDR'])
        elif (len(scriptPubKey) == 25
                and _bord(scriptPubKey[0])  == script.OP_DUP
                and _bord(scriptPubKey[1])  == script.OP_HASH160
                and _bord(scriptPubKey[2])  == 0x14
                and _bord(scriptPubKey[23]) == script.OP_EQUALVERIFY
                and _bord(scriptPubKey[24]) == script.OP_CHECKSIG):
            return cls.from_bytes(scriptPubKey[3:23], bitcoin.params.BASE58_PREFIXES['PUBKEY_ADDR'])

        elif accept_bare_checksig:
            pubkey = None

            # We can operate on the raw bytes directly because we've
            # canonicalized everything above.
            if (len(scriptPubKey) == 35 # compressed
                  and _bord(scriptPubKey[0])  == 0x21
                  and _bord(scriptPubKey[34]) == script.OP_CHECKSIG):

                pubkey = scriptPubKey[1:34]

            elif (len(scriptPubKey) == 67 # uncompressed
                    and _bord(scriptPubKey[0]) == 0x41
                    and _bord(scriptPubKey[66]) == script.OP_CHECKSIG):

                pubkey = scriptPubKey[1:65]

            if pubkey is not None:
                return cls.from_pubkey(pubkey, accept_invalid=True)

        raise CBitcoinAddressError('not a P2PKH scriptPubKey')
Example #19
Source File: wallet.py    From checklocktimeverify-demos with GNU General Public License v3.0 4 votes vote down vote up 
def from_scriptPubKey(cls, scriptPubKey, accept_non_canonical_pushdata=True, accept_bare_checksig=True):
        """Convert a scriptPubKey to a P2PKH address

        Raises CBitcoinAddressError if the scriptPubKey isn't of the correct
        form.

        accept_non_canonical_pushdata - Allow non-canonical pushes (default True)

        accept_bare_checksig          - Treat bare-checksig as P2PKH scriptPubKeys (default True)
        """
        if accept_non_canonical_pushdata:
            # Canonicalize script pushes
            scriptPubKey = script.CScript(scriptPubKey) # in case it's not a CScript instance yet

            try:
                scriptPubKey = script.CScript(tuple(scriptPubKey)) # canonicalize
            except bitcoin.core.script.CScriptInvalidError:
                raise CBitcoinAddressError('not a P2PKH scriptPubKey: script is invalid')

        if (len(scriptPubKey) == 25
                and _bord(scriptPubKey[0])  == script.OP_DUP
                and _bord(scriptPubKey[1])  == script.OP_HASH160
                and _bord(scriptPubKey[2])  == 0x14
                and _bord(scriptPubKey[23]) == script.OP_EQUALVERIFY
                and _bord(scriptPubKey[24]) == script.OP_CHECKSIG):
            return cls.from_bytes(scriptPubKey[3:23], bitcoin.params.BASE58_PREFIXES['PUBKEY_ADDR'])

        elif accept_bare_checksig:
            pubkey = None

            # We can operate on the raw bytes directly because we've
            # canonicalized everything above.
            if (len(scriptPubKey) == 35 # compressed
                  and _bord(scriptPubKey[0])  == 0x21
                  and _bord(scriptPubKey[34]) == script.OP_CHECKSIG):

                pubkey = scriptPubKey[1:34]

            elif (len(scriptPubKey) == 67 # uncompressed
                    and _bord(scriptPubKey[0]) == 0x41
                    and _bord(scriptPubKey[66]) == script.OP_CHECKSIG):

                pubkey = scriptPubKey[1:65]

            if pubkey is not None:
                return cls.from_pubkey(pubkey, accept_invalid=True)

        raise CBitcoinAddressError('not a P2PKH scriptPubKey')