def rebuild_template(self):
"""Rebuild a version 2 blockheader and serialize it.
oldest satoshi client coinbase script contains:
nBits, bnExtraNonce (nBits = GetNextWorkRequired(pindexPrev);)
later timestamp was used instead of "bits" to ensure coinbase txn is unique even if address is the same (github:83f4cd156e9d52bd7c4351336dfa4806a43ee4e4=.
now in version 2 blocks the height is included instead of the timestamp.
"""
coinbase_script = Script(
[push_bignum_instruction(self.block_height)] +
[push_bignum_instruction(self.extra_nonce)] +
[push_data_instruction(flag) for flag in self.coinbase_flags])
coinbase_txin = TxIn(Outpoint.null(),
coinbase_script,
sequence=TxIn.NSEQUENCE_FINAL)
coinbase_tx = Tx(version=1,
in_list=[coinbase_txin],
out_list=self.coinbase_txout_list,
locktime=0)
self.block_transactions = [coinbase_tx] + self.transactions
self.blockheader = BlockHeader(version=2,
hash_prev=self.hash_prev,
hash_merkle=compute_merkle_root(
self.block_transactions),
time=self.time,
bits=self.bits,
nonce=self.nonce)
self.serialized = self.serializer.serialize(self.blockheader)
def rebuild_template(self):
"""Rebuild a version 2 blockheader and serialize it.
oldest satoshi client coinbase script contains:
nBits, bnExtraNonce (nBits = GetNextWorkRequired(pindexPrev);)
later timestamp was used instead of "bits" to ensure coinbase txn is unique even if address is the same (github:83f4cd156e9d52bd7c4351336dfa4806a43ee4e4=.
now in version 2 blocks the height is included instead of the timestamp.
"""
coinbase_script = Script([push_bignum_instruction(self.block_height)] +
[push_bignum_instruction(self.extra_nonce)] +
[push_data_instruction(flag) for flag in self.coinbase_flags])
coinbase_txin = TxIn(Outpoint.null(),
coinbase_script,
sequence=TxIn.NSEQUENCE_FINAL)
coinbase_tx = Tx(version=1,
in_list=[coinbase_txin],
out_list=self.coinbase_txout_list,
locktime=0)
self.block_transactions = [coinbase_tx] + self.transactions
self.blockheader = BlockHeader(version=2,
hash_prev=self.hash_prev,
hash_merkle=compute_merkle_root(self.block_transactions),
time=self.time,
bits=self.bits,
nonce=self.nonce)
self.serialized = self.serializer.serialize(self.blockheader)
def parse_instruction(inst_str):
serializer = InstructionSerializer()
if re.match("^-?[0-9]+$", inst_str):
i = int(inst_str)
if (i == -1 or (1 <= i <= 16)):
return serializer.serialize(Instruction(i + OP_1 - 1))
else:
return serializer.serialize(push_bignum_instruction(i))
return serializer.serialize(push_bignum_instruction(i))
if re.match("^'[^']*'$", inst_str):
return serializer.serialize(push_data_instruction(str(inst_str[1:-1])))
elif re.match("^0x[0-9A-Fa-f]+$", inst_str):
return decodehexstr(inst_str[2:])
elif inst_str in OPCODES_BY_NAME:
return serializer.serialize(Instruction(OPCODES_BY_NAME[inst_str]))
elif ("OP_" + inst_str) in OPCODES_BY_NAME:
return serializer.serialize(Instruction(OPCODES_BY_NAME["OP_" + inst_str]))
raise Exception("Wrong format: '" + inst_str + "'")
def parse_instruction(inst_str):
serializer = InstructionSerializer()
if re.match("^-?[0-9]+$", inst_str):
i = int(inst_str)
if (i == -1 or (1 <= i <= 16)):
return serializer.serialize(Instruction(i + OP_1 - 1))
else:
return serializer.serialize(push_bignum_instruction(i))
return serializer.serialize(push_bignum_instruction(i))
if re.match("^'[^']*'$", inst_str):
return serializer.serialize(push_data_instruction(str(inst_str[1:-1])))
elif re.match("^0x[0-9A-Fa-f]+$", inst_str):
return decodehexstr(inst_str[2:])
elif inst_str in OPCODES_BY_NAME:
return serializer.serialize(Instruction(OPCODES_BY_NAME[inst_str]))
elif ("OP_" + inst_str) in OPCODES_BY_NAME:
return serializer.serialize(
Instruction(OPCODES_BY_NAME["OP_" + inst_str]))
raise Exception("Wrong format: '" + inst_str + "'")
from coinpy.model.protocol.runmode import MAIN, TESTNET, TESTNET3, UNITNET
from coinpy.lib.vm.script.push_data import push_bignum_instruction,\
push_data_instruction
from coinpy.lib.transactions.merkle_tree import compute_merkle_root
from coinpy.lib.serialization.scripts.serialize import ScriptSerializer
GENESIS_MAIN = Block(
BlockHeader(1,
Uint256.from_hexstr("0000000000000000000000000000000000000000000000000000000000000000"), #hash_prev
Uint256.from_hexstr("4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"), #merkle
1231006505, #time
486604799, #bits
2083236893), #nonce
[Tx(1, #version
[TxIn(Outpoint(Uint256.from_hexstr("0000000000000000000000000000000000000000000000000000000000000000"), 4294967295),
Script([push_bignum_instruction(486604799), #bits
push_bignum_instruction(4), #extra_nonce
push_data_instruction("The Times 03/Jan/2009 Chancellor on brink of second bailout for banks")]), #script
4294967295) ], #inlist
[TxOut(5000000000, #value
Script([push_data_instruction(decodehexstr("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f")),Instruction(OP_CHECKSIG)]))],
0) #locktime
])
GENESIS_TESTNET = Block(
BlockHeader(1,
Uint256.from_hexstr("0000000000000000000000000000000000000000000000000000000000000000"), #hash_prev
Uint256.from_hexstr("4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"), #merkle
1296688602, #time
487063544, #bits
384568319), #nonce