def verify_chain(self, chain):
first_header = chain[0]
prev_header = self.read_header(first_header.get('block_height') - 1)
for header in chain:
height = header.get('block_height')
prev_hash = self.hash_header(prev_header)
bits, target = self.get_target(height, chain)
_hash = self.hash_header(header)
pow_hash = _hash
try:
if height >= 45000 and header['version'] == 196865:
assert auxpow.verify(_hash, auxpow.get_our_chain_id(),
header['auxpow'])
pow_hash = self.hash_header(
header['auxpow']['parent_block'])
assert prev_hash == header.get('prev_block_hash')
assert bits == header.get('bits')
assert int('0x' + pow_hash, 16) < target
except Exception:
print traceback.format_exc()
print 'error validating chain at height ', height
print 'block ', height, '(', _hash, ') failed validation'
pprint.pprint(header)
return False
prev_header = header
return True
def verify_chain(self, chain):
first_header = chain[0]
prev_header = self.read_header(first_header.get('block_height') -1)
for header in chain:
height = header.get('block_height')
prev_hash = self.hash_header(prev_header)
bits, target = self.get_target(height, chain)
_hash = self.hash_header(header)
pow_hash = _hash
try:
if height >= 45000 and header['version'] == 196865:
assert auxpow.verify(_hash, auxpow.get_our_chain_id(), header['auxpow'])
pow_hash = self.hash_header(header['auxpow']['parent_block'])
assert prev_hash == header.get('prev_block_hash')
assert bits == header.get('bits')
assert int('0x'+pow_hash,16) < target
except Exception:
print traceback.format_exc()
print 'error validating chain at height ', height
print 'block ', height, '(',_hash,') failed validation'
pprint.pprint(header)
return False
prev_header = header
return True
def verify_chain(self, chain):
first_header = chain[0]
prev_header = self.read_header(first_header.get('block_height') - 1)
for header in chain:
height = header.get('block_height')
prev_hash = self.hash_header(prev_header)
bits, target = self.get_target(height, chain)
_hash = self.hash_header(header)
pow_hash = self.pow_hash_header(header)
try:
# todo: dogecoin auxpow block version
if height >= auxpow_start and header['version'] == 6422786:
assert auxpow.verify(_hash, auxpow.get_our_chain_id(), header['auxpow'])
pow_hash = self.pow_hash_header(header['auxpow']['parent_block'])
assert prev_hash == header.get('prev_block_hash')
assert bits == header.get('bits')
assert int('0x'+pow_hash,16) < target
except Exception:
print traceback.format_exc()
print 'error validating chain at height ', height
print 'block ', height, '(',_hash,') failed validation'
pprint.pprint(header)
print hex(bits), '==', hex(header.get('bits'))
print int('0x'+pow_hash,16), '<', target
return False
prev_header = header
return True
def verify_chain(self, chain):
first_header = chain[0]
prev_header = self.read_header(first_header.get('block_height') - 1)
for header in chain:
height = header.get('block_height')
prev_hash = self.hash_header(prev_header)
bits, target = self.get_target(height, chain)
_hash = self.hash_header(header)
pow_hash = self.pow_hash_header(header)
try:
# todo: dogecoin auxpow block version
if height >= auxpow_start and header['version'] == 6422786:
assert auxpow.verify(_hash, auxpow.get_our_chain_id(),
header['auxpow'])
pow_hash = self.pow_hash_header(
header['auxpow']['parent_block'])
assert prev_hash == header.get('prev_block_hash')
assert bits == header.get('bits')
assert int('0x' + pow_hash, 16) < target
except Exception:
print traceback.format_exc()
print 'error validating chain at height ', height
print 'block ', height, '(', _hash, ') failed validation'
pprint.pprint(header)
print hex(bits), '==', hex(header.get('bits'))
print int('0x' + pow_hash, 16), '<', target
return False
prev_header = header
return True
def verify_chunk(self, index, hexdata):
hex_to_int = lambda s: int('0x' + s[::-1].encode('hex'), 16)
data = hexdata.decode('hex')
disk_data = ''
height = index * 2016
num = hex_to_int(data[0:4])
data = data[4:]
auxpowdata = data[num * 88:]
auxpowbaseoffset = 0
if index == 0:
previous_hash = ("0" * 64)
else:
prev_header = self.read_header(index * 2016 - 1)
if prev_header is None: raise
previous_hash = self.hash_header(prev_header)
bits, target = self.get_target(height)
chain = []
for i in range(num):
height = index * 2016 + i
raw_header = data[i * 88:(i + 1) * 88]
disk_data += raw_header[0:80] # strip auxpow data
header = self.header_from_string(raw_header)
_hash = self.hash_header(header)
_prev_hash = _hash
header['block_height'] = height
if (i == 0):
auxpowbaseoffset = header['auxpow_offset']
start = header['auxpow_offset'] - auxpowbaseoffset
end = start + header['auxpow_length']
if (end > start):
header['auxpow'] = self.auxpow_from_string(
auxpowdata[start:end].decode('hex'))
#print header['auxpow']
if height >= 20160 and (height % 144) == 0:
#print height , '%', 144 , '=', height % 144
bits, target = self.get_target(height, chain)
if height >= 45000 and header[
'version'] == 196865: #TODO getAuxPowVersion()
#todo: check that auxpow.get_chain_id(header) == auxpow.get_our_chain_id?
#print header['auxpow']
try:
assert auxpow.verify(_hash, auxpow.get_our_chain_id(),
header['auxpow'])
except Exception as e:
print traceback.format_exc()
print 'block ', height, '(', _hash, ') failed validation'
print 'auxpow failed verification'
pp.pprint(header['auxpow'])
raise e
#pp.pprint(header)
#pp.pprint(parent_header)
_hash = self.hash_header(header['auxpow']['parent_block'])
#print _hash
# todo: verify auxpow data
#_hash = '' # auxpow.getHash()
try:
assert previous_hash == header.get('prev_block_hash')
assert bits == header.get('bits')
assert int('0x' + _hash, 16) < target
except Exception as e:
print 'block ', height, ' failed validation'
raise e
if height % 144 == 0:
print 'block ', height, ' validated'
chain.append(header)
previous_header = header
previous_hash = _prev_hash
self.save_chunk(index, disk_data)
print_error("validated chunk %d" % height)
def verify_chunk(self, index, hexdata):
hex_to_int = lambda s: int('0x' + s[::-1].encode('hex'), 16)
data = hexdata.decode('hex')
disk_data = ''
height = index * 2016
num = hex_to_int(data[0:4])
data = data[4:]
auxpowdata = data[num*88:]
auxpowbaseoffset = 0
if index == 0:
previous_hash = ("0"*64)
else:
prev_header = self.read_header(index*2016-1)
if prev_header is None: raise
previous_hash = self.hash_header(prev_header)
bits, target = self.get_target(height)
chain = []
for i in range(num):
height = index * 2016 + i
raw_header = data[i*88:(i+1)*88]
disk_data += raw_header[0:80] # strip auxpow data
header = self.header_from_string(raw_header)
_hash = self.hash_header(header)
_prev_hash = _hash
header['block_height'] = height
if (i == 0):
auxpowbaseoffset = header['auxpow_offset']
start = header['auxpow_offset'] - auxpowbaseoffset
end = start + header['auxpow_length']
if (end > start):
header['auxpow'] = self.auxpow_from_string(auxpowdata[start:end].decode('hex'))
#print header['auxpow']
if height >= 20160 and (height % 144) == 0:
#print height , '%', 144 , '=', height % 144
bits, target = self.get_target(height, chain)
if height >= 45000 and header['version'] == 196865: #TODO getAuxPowVersion()
#todo: check that auxpow.get_chain_id(header) == auxpow.get_our_chain_id?
#print header['auxpow']
try:
assert auxpow.verify(_hash, auxpow.get_our_chain_id(), header['auxpow'])
except Exception as e:
print traceback.format_exc()
print 'block ', height, '(',_hash,') failed validation'
print 'auxpow failed verification'
pp.pprint(header['auxpow'])
raise e
#pp.pprint(header)
#pp.pprint(parent_header)
_hash = self.hash_header(header['auxpow']['parent_block'])
#print _hash
# todo: verify auxpow data
#_hash = '' # auxpow.getHash()
try:
assert previous_hash == header.get('prev_block_hash')
assert bits == header.get('bits')
assert int('0x'+_hash,16) < target
except Exception as e:
print 'block ', height, ' failed validation'
raise e
if height % 144 == 0:
print 'block ', height, ' validated'
chain.append(header)
previous_header = header
previous_hash = _prev_hash
self.save_chunk(index, disk_data)
print_error("validated chunk %d"%height)