def create_block_for_submission(block):
submission_block = ""
submission_block += util.bin2hex(make_header_from_template(block))
submission_block += util.int2varinthex(len(block['transactions']))
for tx in block['transactions']:
submission_block += tx['data']
return submission_block
def block_make_submit(block):
subm = ""
# Block header
subm += util.bin2hex(block_form_header(block))
# Number of transactions as a varint
subm += util.int2varinthex(len(block['transactions']))
# Concatenated transactions data
for tx in block['transactions']:
subm += tx['data']
return subm
def tx_make_coinbase(coinbase_script, address, value):
# Create a pubkey script
# OP_DUP OP_HASH160 <len to push> <pubkey> OP_EQUALVERIFY OP_CHECKSIG
pubkey_script = "76" + "a9" + "14" + util.bitcoinaddress2hash160(
address) + "88" + "ac"
tx = ""
tx += "01000000"
tx += "01"
tx += "0" * 64
tx += "ffffffff"
tx += util.int2varinthex(len(coinbase_script) / 2)
tx += coinbase_script
tx += "ffffffff"
tx += "01"
tx += util.int2lehex(value, 8)
tx += util.int2varinthex(len(pubkey_script) / 2)
tx += pubkey_script
tx += "00000000"
return tx
def tx_make_coinbase(coinbase_script, address, value):
'''
The following coinbase has to be made exactly as per the guideline from the bitcoin team.
'''
# Create a pubkey script
# OP_DUP OP_HASH160 <len to push> <pubkey> OP_EQUALVERIFY OP_CHECKSIG
pubkey_script = "76" + "a9" + "14" + util.bitcoinaddress2hash160(address) + "88" + "ac"
tx = ""
tx += "01000000"
tx += "01"
tx += "0"*64
tx += "ffffffff"
tx += util.int2varinthex(len(coinbase_script)/2)
tx += coinbase_script
tx += "ffffffff"
tx += "01"
tx += util.int2lehex(value, 8)
tx += util.int2varinthex(len(pubkey_script)/2)
tx += pubkey_script
tx += "00000000"
return tx