basic examples

README.md

@@ -1,2 +1,79 @@
 # pybtc
 Python bitcoin library
+
+
+### Basic Examples
+
+#### Create private key
+
+    >>> from pybtc import *
+    >>> create_priv()
+    b'\xc8\xf5tGf\x00+4\x1c\xe3\xb6\x00\xf4\x14w\x1d\xf0{jiY&4`v\xd4\tmv!\x0f\x1f'
+    >>> priv = create_priv()
+    >>> priv
+    b'_`\xd7@\x9e\xdb\xbbB5O%@\xd6\x92\xb1\x0e*\xcd\xb6\x89!\xa3JE\xb0\xb6:\x8c\x04\x88\xc9\xa5'
+    >>> priv2WIF(priv)  
+    'KzR7Z5xNnSYqxKZriSrWk4nQFU2qPJUcD4AoD7ckhy1c68A4zvkW'
+    >>> priv2WIF(priv, compressed = False)  # Mainnet compressed WIF format
+    '5JYHtgBjYbLT3ZkhGHHCivscdMdDKeVTZBgq5ZK51fyKpqKDhYv' # Mainnet uncompressed WIF format
+    >>> priv2WIF(priv, testnet = True)
+    'cQn71zxEDWF77m386rfe7PHTshLF3kaJH6KGKY5GD5fcLsCqpPbg'
+    >>> priv2WIF(priv, compressed = True, testnet = True) # Testnet compressed WIF format
+    'cQn71zxEDWF77m386rfe7PHTshLF3kaJH6KGKY5GD5fcLsCqpPbg'
+    >>> priv2WIF(priv, compressed = False, testnet = True) # Testnet uncompressed WIF format
+    '92JvUR1H8pQb1dFytdB7bXRaH1yvUp2eu8YnABfaMQiNbuKiPVL'
+    >>>
+    >>> WIF2priv("KzR7Z5xNnSYqxKZriSrWk4nQFU2qPJUcD4AoD7ckhy1c68A4zvkW")
+    b'_`\xd7@\x9e\xdb\xbbB5O%@\xd6\x92\xb1\x0e*\xcd\xb6\x89!\xa3JE\xb0\xb6:\x8c\x04\x88\xc9\xa5'
+    
+#### Public key from private key
+
+    >>> from pybtc import *
+    >>> priv2pub("KzR7Z5xNnSYqxKZriSrWk4nQFU2qPJUcD4AoD7ckhy1c68A4zvkW")
+    b'\x02\xb1-\xc2\x03u\xda\x00*7t\xb9c\xe4A\xdb\x1c\xe0\x89\xb8W\x13\x86\xbe\x82\xee(\x11nrj\xb06'
+    >>> priv2pub("KzR7Z5xNnSYqxKZriSrWk4nQFU2qPJUcD4AoD7ckhy1c68A4zvkW", hex = True)
+    '02b12dc20375da002a3774b963e441db1ce089b8571386be82ee28116e726ab036'
+    >>>
+    >>> priv = WIF2priv("KzR7Z5xNnSYqxKZriSrWk4nQFU2qPJUcD4AoD7ckhy1c68A4zvkW")
+    >>> priv
+    b'_`\xd7@\x9e\xdb\xbbB5O%@\xd6\x92\xb1\x0e*\xcd\xb6\x89!\xa3JE\xb0\xb6:\x8c\x04\x88\xc9\xa5'
+    >>>
+    >>> priv2pub(priv, hex = True)
+    '02b12dc20375da002a3774b963e441db1ce089b8571386be82ee28116e726ab036'
+    >>>
+
+#### Address from public key/private key
+
+    >>> from pybtc import *
+    >>> # address in bech32 format
+    ...
+    >>> pub2address(priv2pub("KzR7Z5xNnSYqxKZriSrWk4nQFU2qPJUcD4AoD7ckhy1c68A4zvkW"))
+    'bc1q3hs6985qftzrvfl7aqcshsf7equapuuxzr2kcv'
+    >>>
+    >>> # address in legacy format
+    ...
+    >>> pub2address(priv2pub("KzR7Z5xNnSYqxKZriSrWk4nQFU2qPJUcD4AoD7ckhy1c68A4zvkW"), witness_version = None)
+    '1DwCaTcMTT5kZmH4wCevDe5nyzffi2Bz9p'
+    >>>
+    >>> # uncompressed public key deprecated for bech32 segwit addresses fromat
+    ...
+    >>> pub2address(priv2pub("5JYHtgBjYbLT3ZkhGHHCivscdMdDKeVTZBgq5ZK51fyKpqKDhYv"))
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in <module>
+      File "/usr/local/lib/python3.6/site-packages/pybtc/tools.py", line 233, in pub2address
+        assert len(pubkey) == 33
+    AssertionError
+    >>>
+    >>> # uncompressed public key legacy format
+    ...
+    >>> pub2address(priv2pub("5JYHtgBjYbLT3ZkhGHHCivscdMdDKeVTZBgq5ZK51fyKpqKDhYv"), witness_version = None)
+    '1EbTeoa1QgZaSHZFznrhNdKrRbbQupVwuZ'
+    >>>
+    >>> # testnet addresses
+    ...
+    >>> pub2address(priv2pub("KzR7Z5xNnSYqxKZriSrWk4nQFU2qPJUcD4AoD7ckhy1c68A4zvkW"), testnet = True)
+    'tb1q3hs6985qftzrvfl7aqcshsf7equapuuxg939rl'
+    >>> pub2address(priv2pub("KzR7Z5xNnSYqxKZriSrWk4nQFU2qPJUcD4AoD7ckhy1c68A4zvkW"), witness_version = None, testnet = True)
+    'mtT9sWhLGUX1LskgemdJ3ZJ7qzGNaygcXP'
+    >>>
+

pybtc/tools.py

@@ -34,7 +34,7 @@ def priv_from_int(k):
     return int.to_bytes(k,byteorder="big",length=32)
 
 
-def priv2WIF(h, compressed = False, testnet = False):
+def priv2WIF(h, compressed = True, testnet = False):
     #uncompressed: 0x80 + [32-byte secret] + [4 bytes of Hash() of previous 33 bytes], base58 encoded
     #compressed: 0x80 + [32-byte secret] + 0x01 + [4 bytes of Hash() previous 34 bytes], base58 encoded
     if type(h) == str:
@@ -213,13 +213,19 @@ def address2script(address):
         return OPCODE["OP_0"] + bytes([len(h)]) + h
     raise Exception("Unknown address")
 
+def script_P2SH_P2WPKH(pubkey, hash = False):
+    assert len(pubkey) == 33
+    if hash:
+        return hash160(b'\x00\x14' + hash160(pubkey))
+    return b'\x00\x14' + hash160(pubkey)
+
 
 def pub2address(pubkey, testnet = False,
-                inside_p2sh = False,
+                p2sh_p2wpkh = False,
                 witness_version = 0):
     if type(pubkey) == str:
         pubkey = unhexlify(pubkey)
-    if inside_p2sh:
+    if p2sh_p2wpkh:
         assert len(pubkey) == 33
         h = hash160(b'\x00\x14' + hash160(pubkey))
     else:
@@ -227,7 +233,7 @@ def pub2address(pubkey, testnet = False,
             assert len(pubkey) == 33
         h = hash160(pubkey)
     return hash2address(h, testnet = testnet,
-                           script_hash = inside_p2sh,
+                           script_hash = p2sh_p2wpkh,
                            witness_version = witness_version)
 
 # def pub2P2SH_P2WPKH_hash(pubkey):

tests/test.py

@@ -1,4 +1,5 @@
 import unittest
+
 import test
 
 testLoad = unittest.TestLoader()

tests/test/address_functions.py

@@ -106,7 +106,7 @@ class AddressFunctionsTests(unittest.TestCase):
         self.assertEqual(tools.pub2address(pc, witness_version=None, testnet=1), "mvNyptwisQTmwL3vN8VMaVUrA3swVCX83c")
         p = "L32a8Mo1LgvjrVDbzcc3NkuUfkpoLsf2Y2oEWkV4t1KpQdFzuyff"
         pk = tools.priv2pub(p)
-        self.assertEqual(tools.pub2address(pk, inside_p2sh=1,witness_version=None), "33am12q3Bncnn3BfvLYHczyv23Sq2Wbwjw")
+        self.assertEqual(tools.pub2address(pk, p2sh_p2wpkh=1,witness_version=None), "33am12q3Bncnn3BfvLYHczyv23Sq2Wbwjw")
 
     def test_is_address_valid(self):
         self.assertEqual(tools.is_address_valid("bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4"), 1)

tests/test/block.py

@@ -592,11 +592,11 @@ class BlockDeserializeTests(unittest.TestCase):
         block = blockchain.Block.deserialize(block_e)
 
 
-        print(">>>",block.bits)
+        # print(">>>",block.bits)
-        print(">>>",block.hash)
+        # print(">>>",block.hash)
-        print(">>>",block.timestamp)
+        # print(">>>",block.timestamp)
-        target = int.from_bytes(block.bits[1:], 'big') * (2 ** (8 * (block.bits[0] - 3)))
+        # target = int.from_bytes(block.bits[1:], 'big') * (2 ** (8 * (block.bits[0] - 3)))
-        print(int.from_bytes(block.hash, 'big')<target)
+        # print(int.from_bytes(block.hash, 'big')<target)
 
         # print(rh2s(block.transactions[0].hash))
         # cbm = block.coinbase

tests/test/script_deserialize.py

@@ -1,7 +1,7 @@
 import unittest
 from pybtc import blockchain
 from binascii import unhexlify
-from pybtc import address2hash  as address2hash160
+from pybtc import address2hash
 
 
 class ScriptDeserializeTests(unittest.TestCase):
@@ -14,7 +14,7 @@ class ScriptDeserializeTests(unittest.TestCase):
         self.assertEqual(s.type, "P2PKH")
         self.assertEqual(s.ntype, 0)
         self.assertEqual(s.asm, "OP_DUP OP_HASH160 3520dd524f6ca66f63182bb23efff6cc8ee3ee63 OP_EQUALVERIFY OP_CHECKSIG")
-        self.assertEqual(s.address[0], address2hash160("15qvBdqSWQCuLQPXVoWViG2GvjeARmpYPw"))
+        self.assertEqual(s.address[0], address2hash("15qvBdqSWQCuLQPXVoWViG2GvjeARmpYPw"))
         self.assertEqual(s.pattern, "OP_DUP OP_HASH160 <20> OP_EQUALVERIFY OP_CHECKSIG")
         self.assertEqual(s.op_sig_count, 1)
 
@@ -24,7 +24,7 @@ class ScriptDeserializeTests(unittest.TestCase):
         self.assertEqual(s.type, "P2SH")
         self.assertEqual(s.ntype, 1)
         self.assertEqual(s.asm, "OP_HASH160 69f37572ab1b69f304f987b119e2450e0b71bf5c OP_EQUAL")
-        self.assertEqual(s.address[0], address2hash160("3BMEXVsYyfKB5h3m53XRSFHkqi1zPwsvcK"))
+        self.assertEqual(s.address[0], address2hash("3BMEXVsYyfKB5h3m53XRSFHkqi1zPwsvcK"))
         self.assertEqual(s.pattern, "OP_HASH160 <20> OP_EQUAL")
         self.assertEqual(s.op_sig_count, 0)