from __future__ import division
-from bitcoin import data as bitcoin_data
+import itertools
+import random
+import time
+
+from twisted.python import log
+
+import p2pool
+from p2pool import skiplists
+from p2pool.bitcoin import data as bitcoin_data, script
+from p2pool.util import memoize, expiring_dict, math
+
+
+merkle_branch_type = bitcoin_data.ListType(bitcoin_data.ComposedType([
+ ('side', bitcoin_data.StructType('<B')), # enum?
+ ('hash', bitcoin_data.HashType()),
+]))
-chain_id_type = bitcoin_data.ComposedType([
- ('last_p2pool_block_hash', bitcoin_data.HashType()),
- ('bits', bitcoin_data.StructType('<I')),
-])
share_data_type = bitcoin_data.ComposedType([
- ('last_p2pool_block_hash', bitcoin_data.HashType()),
- ('previous_p2pool_share_hash', bitcoin_data.HashType()),
+ ('previous_share_hash', bitcoin_data.PossiblyNone(0, bitcoin_data.HashType())),
+ ('target', bitcoin_data.FloatingIntegerType()),
('nonce', bitcoin_data.VarStrType()),
])
+
coinbase_type = bitcoin_data.ComposedType([
- ('identifier', bitcoin_data.StructType('<Q')),
+ ('identifier', bitcoin_data.FixedStrType(8)),
('share_data', share_data_type),
])
-merkle_branch_type = bitcoin_data.ListType(bitcoin_data.ComposedType([
- ('side', bitcoin_data.StructType('<B')),
- ('hash', bitcoin_data.HashType()),
-]))
+share_info_type = bitcoin_data.ComposedType([
+ ('share_data', share_data_type),
+ ('new_script', bitcoin_data.VarStrType()),
+ ('subsidy', bitcoin_data.StructType('<Q')),
+])
-gentx_info_type = bitcoin_data.ComposedType([
- ('share_info', bitcoin_data.ComposedType([
- ('share_data', share_data_type),
- ('new_script', bitcoin_data.VarStrType()),
- ('subsidy', bitcoin_data.StructType('<Q')),
- ])),
+
+share1a_type = bitcoin_data.ComposedType([
+ ('header', bitcoin_data.block_header_type),
+ ('share_info', share_info_type),
('merkle_branch', merkle_branch_type),
])
-share1_type = bitcoin_data.ComposedType([
+share1b_type = bitcoin_data.ComposedType([
('header', bitcoin_data.block_header_type),
- ('gentx_info', gentx_info_type),
+ ('share_info', share_info_type),
+ ('other_txs', bitcoin_data.ListType(bitcoin_data.tx_type)),
])
def calculate_merkle_branch(txs, index):
- hash_list = [(bitcoin_data.tx_hash(tx), i == index, []) for i, tx in enumerate(txs)]
+ hash_list = [(bitcoin_data.tx_type.hash256(tx), i == index, []) for i, tx in enumerate(txs)]
while len(hash_list) > 1:
hash_list = [
(
- bitcoin_data.doublesha(bitcoin_data.merkle_record_type.pack(dict(left=left, right=right))),
+ bitcoin_data.merkle_record_type.hash256(dict(left=left, right=right)),
left_f or right_f,
(left_l if left_f else right_l) + [dict(side=1, hash=right) if left_f else dict(side=0, hash=left)],
)
return hash_list[0][2]
def check_merkle_branch(tx, branch):
- hash_ = bitcoin_data.tx_hash(tx)
+ hash_ = bitcoin_data.tx_type.hash256(tx)
for step in branch:
if not step['side']:
- hash_ = bitcoin_data.doublesha(bitcoin_data.merkle_record_type.pack(dict(left=step['hash'], right=hash_)))
+ hash_ = bitcoin_data.merkle_record_type.hash256(dict(left=step['hash'], right=hash_))
else:
- hash_ = bitcoin_data.doublesha(bitcoin_data.merkle_record_type.pack(dict(left=hash_, right=step['hash'])))
+ hash_ = bitcoin_data.merkle_record_type.hash256(dict(left=hash_, right=step['hash']))
return hash_
-def txs_to_gentx_info(txs):
+def gentx_to_share_info(gentx):
return dict(
- share_info=dict(
- share_data=coinbase_type.unpack(txs[0]['tx_ins'][0]['script'])['share_data'],
- subsidy=sum(tx_out['value'] for tx_out in txs[0]['tx_outs']),
- new_script=txs[0]['tx_outs'][-1]['script'],
- ),
- merkle_branch=calculate_merkle_branch(txs, 0),
+ share_data=coinbase_type.unpack(gentx['tx_ins'][0]['script'])['share_data'],
+ subsidy=sum(tx_out['value'] for tx_out in gentx['tx_outs']),
+ new_script=gentx['tx_outs'][-1]['script'],
)
-def share_info_to_gentx_and_shares(share_info, chain, net):
+def share_info_to_gentx(share_info, block_target, tracker, net):
return generate_transaction(
- last_p2pool_block_hash=share_info['share_data']['last_p2pool_block_hash'],
- previous_share2=chain.share2s[share_info['share_data']['previous_p2pool_share_hash']],
- nonce=share_info['share_data']['nonce'],
+ tracker=tracker,
+ previous_share_hash=share_info['share_data']['previous_share_hash'],
new_script=share_info['new_script'],
subsidy=share_info['subsidy'],
+ nonce=share_info['share_data']['nonce'],
+ block_target=block_target,
net=net,
)
-def gentx_info_to_gentx_shares_and_merkle_root(gentx_info, chain, net):
- gentx, shares = share_info_to_gentx_and_shares(gentx_info['share_info'], chain, net)
- return gentx, shares, check_merkle_branch(gentx, gentx_info['merkle_branch'])
-
class Share(object):
- def __init__(self, header, txs=None, gentx_info=None):
- if txs is not None:
- if bitcoin_data.merkle_hash(txs) != header['merkle_root']:
- raise ValueError("txs don't match header")
-
- if gentx_info is None:
- if txs is None:
- raise ValueError('need either txs or gentx_info')
-
- gentx_info = txs_to_gentx_info(txs)
+ @classmethod
+ def from_block(cls, block):
+ return cls(block['header'], gentx_to_share_info(block['txs'][0]), other_txs=block['txs'][1:])
+
+ @classmethod
+ def from_share1a(cls, share1a):
+ return cls(**share1a)
+
+ @classmethod
+ def from_share1b(cls, share1b):
+ return cls(**share1b)
+
+ __slots__ = 'header previous_block share_info merkle_branch other_txs timestamp share_data new_script subsidy previous_hash previous_share_hash target nonce bitcoin_hash hash time_seen shared peer'.split(' ')
+
+ def __init__(self, header, share_info, merkle_branch=None, other_txs=None):
+ if merkle_branch is None and other_txs is None:
+ raise ValueError('need either merkle_branch or other_txs')
+ if other_txs is not None:
+ new_merkle_branch = calculate_merkle_branch([dict(version=0, tx_ins=[], tx_outs=[], lock_time=0)] + other_txs, 0)
+ if merkle_branch is not None:
+ if merke_branch != new_merkle_branch:
+ raise ValueError('invalid merkle_branch and other_txs')
+ merkle_branch = new_merkle_branch
- coinbase = gentx_info['share_info']['coinbase']
+ if len(merkle_branch) > 16:
+ raise ValueError('merkle_branch too long!')
self.header = header
- self.txs = txs
- self.gentx_info = gentx_info
- self.hash = bitcoin_data.block_hash(header)
- self.previous_share_hash = coinbase['previous_p2pool_share_hash'] if coinbase['previous_p2pool_share_hash'] != 2**256 - 1 else None
- self.chain_id_data = chain_id_type.pack(dict(last_p2pool_block_hash=coinbase['last_p2pool_block_hash'], bits=header['bits']))
-
- def as_block(self):
- if self.txs is None:
+ self.previous_block = header['previous_block']
+ self.share_info = share_info
+ self.merkle_branch = merkle_branch
+ self.other_txs = other_txs
+
+ self.timestamp = self.header['timestamp']
+
+ self.share_data = self.share_info['share_data']
+ self.new_script = self.share_info['new_script']
+ self.subsidy = self.share_info['subsidy']
+
+ if len(self.new_script) > 100:
+ raise ValueError('new_script too long!')
+
+ self.previous_hash = self.previous_share_hash = self.share_data['previous_share_hash']
+ self.target = self.share_data['target']
+ self.nonce = self.share_data['nonce']
+
+ if len(self.nonce) > 100:
+ raise ValueError('nonce too long!')
+
+ self.bitcoin_hash = bitcoin_data.block_header_type.hash256(header)
+ self.hash = share1a_type.hash256(self.as_share1a())
+
+ if self.bitcoin_hash > self.target:
+ print 'hash', hex(self.bitcoin_hash)
+ print 'targ', hex(self.target)
+ raise ValueError('not enough work!')
+
+ if script.get_sigop_count(self.new_script) > 1:
+ raise ValueError('too many sigops!')
+
+ # XXX eww
+ self.time_seen = time.time()
+ self.shared = False
+ self.peer = None
+
+ def as_block(self, tracker, net):
+ if self.other_txs is None:
raise ValueError('share does not contain all txs')
- return dict(header=self.header, txs=self.txs)
+ gentx = share_info_to_gentx(self.share_info, self.header['target'], tracker, net)
+
+ return dict(header=self.header, txs=[gentx] + self.other_txs)
+
+ def as_share1a(self):
+ return dict(header=self.header, share_info=self.share_info, merkle_branch=self.merkle_branch)
- def as_share1(self):
- return dict(header=self.header, gentx_info=self.gentx_info)
+ def as_share1b(self):
+ return dict(header=self.header, share_info=self.share_info, other_txs=self.other_txs)
- def check(self, chain, height, previous_share2, net):
- if self.chain_id_data != chain.chain_id_data:
- raise ValueError('wrong chain')
+ def check(self, tracker, now, net):
+ import time
+ if self.previous_share_hash is not None:
+ if self.header['timestamp'] <= math.median((s.timestamp for s in itertools.islice(tracker.get_chain_to_root(self.previous_share_hash), 11)), use_float=False):
+ raise ValueError('share from too far in the past!')
- if self.hash > net.TARGET_MULTIPLIER*bitcoin_data.bits_to_target(self.header['bits']):
- raise ValueError('not enough work!')
+ if self.header['timestamp'] > now + 2*60*60:
+ raise ValueError('share from too far in the future!')
- gentx, shares, merkle_root = gentx_info_to_gentx_shares_and_merkle_root(self.gentx_info, chain, net)
+ gentx = share_info_to_gentx(self.share_info, self.header['target'], tracker, net)
- if merkle_root != self.header['merkle_root']:
- raise ValueError("gentx doesn't match header")
+ if len(gentx['tx_ins'][0]['script']) > 100:
+ raise ValueError('''coinbase too large!''')
- return Share2(self, shares, height)
-
-class Share2(object):
- '''Share with associated data'''
-
- def __init__(self, share, shares, height):
- self.share = share
- self.shares = shares
- self.height = height
+ if check_merkle_branch(gentx, self.merkle_branch) != self.header['merkle_root']:
+ raise ValueError('''gentx doesn't match header via merkle_branch''')
- self.shared = False
+ if self.other_txs is not None:
+ if bitcoin_data.merkle_hash([gentx] + self.other_txs) != self.header['merkle_root']:
+ raise ValueError('''gentx doesn't match header via other_txs''')
+
+ if len(bitcoin_data.block_type.pack(dict(header=self.header, txs=[gentx] + self.other_txs))) > 1000000 - 1000:
+ raise ValueError('''block size too large''')
def flag_shared(self):
self.shared = True
+
+ def __repr__(self):
+ return '<Share %s>' % (' '.join('%s=%r' % (k, v) for k, v in self.__dict__.iteritems()),)
-def generate_transaction(last_p2pool_block_hash, previous_share2, new_script, subsidy, nonce, net):
- shares = (previous_share2.shares if previous_share2 is not None else [net.SCRIPT]*net.SPREAD)[1:-1] + [new_script, new_script]
+def get_pool_attempts_per_second(tracker, previous_share_hash, net, dist=None):
+ if dist is None:
+ dist = net.TARGET_LOOKBEHIND
+ near = tracker.shares[previous_share_hash]
+ far = tracker.shares[tracker.get_nth_parent_hash(previous_share_hash, dist - 1)]
+ attempts = tracker.get_work(near.hash) - tracker.get_work(far.hash)
+ time = near.timestamp - far.timestamp
+ if time == 0:
+ time = 1
+ return attempts//time
+
+def generate_transaction(tracker, previous_share_hash, new_script, subsidy, nonce, block_target, net):
+ height, last = tracker.get_height_and_last(previous_share_hash)
+ if height < net.TARGET_LOOKBEHIND:
+ target = bitcoin_data.FloatingIntegerType().truncate_to(2**256//2**20 - 1)
+ else:
+ attempts_per_second = get_pool_attempts_per_second(tracker, previous_share_hash, net)
+ pre_target = 2**256//(net.SHARE_PERIOD*attempts_per_second) - 1
+ previous_share = tracker.shares[previous_share_hash] if previous_share_hash is not None else None
+ pre_target2 = math.clip(pre_target, (previous_share.target*9//10, previous_share.target*11//10))
+ pre_target3 = math.clip(pre_target2, (0, net.MAX_TARGET))
+ target = bitcoin_data.FloatingIntegerType().truncate_to(pre_target3)
+
+ attempts_to_block = bitcoin_data.target_to_average_attempts(block_target)
+ max_weight = net.SPREAD * attempts_to_block
- dest_weights = {}
- for script in shares:
- dest_weights[script] = dest_weights.get(script, 0) + 1
- total_weight = sum(dest_weights.itervalues())
+ this_weight = min(bitcoin_data.target_to_average_attempts(target), max_weight)
+ other_weights, other_weights_total = tracker.get_cumulative_weights(previous_share_hash, min(height, net.CHAIN_LENGTH), max(0, max_weight - this_weight))
+ dest_weights, total_weight = math.add_dicts([{new_script: this_weight}, other_weights]), this_weight + other_weights_total
+ assert total_weight == sum(dest_weights.itervalues())
- amounts = dict((script, subsidy*weight*63//(64*total_weight)) for (script, weight) in dest_weights.iteritems())
- amounts[net.SCRIPT] = amounts.get(net.SCRIPT, 0) + subsidy//64 # prevent fake previous p2pool blocks
+ amounts = dict((script, subsidy*(396*weight)//(400*total_weight)) for (script, weight) in dest_weights.iteritems())
+ amounts[new_script] = amounts.get(new_script, 0) + subsidy*2//400
+ amounts[net.SCRIPT] = amounts.get(net.SCRIPT, 0) + subsidy*2//400
amounts[net.SCRIPT] = amounts.get(net.SCRIPT, 0) + subsidy - sum(amounts.itervalues()) # collect any extra
+ if sum(amounts.itervalues()) != subsidy:
+ raise ValueError()
+ if any(x < 0 for x in amounts.itervalues()):
+ raise ValueError()
+
+ pre_dests = sorted(amounts.iterkeys(), key=lambda script: (amounts[script], script))
+ pre_dests = pre_dests[-4000:] # block length limit, unlikely to ever be hit
- dests = sorted(amounts.iterkeys(), key=lambda script: (script == new_script, script))
+ dests = sorted(pre_dests, key=lambda script: (script == new_script, script))
assert dests[-1] == new_script
return dict(
version=1,
tx_ins=[dict(
- previous_output=dict(index=4294967295, hash=0),
- sequence=4294967295,
+ previous_output=None,
+ sequence=None,
script=coinbase_type.pack(dict(
identifier=net.IDENTIFIER,
share_data=dict(
- last_p2pool_block_hash=last_p2pool_block_hash,
- previous_p2pool_share_hash=previous_share2.share.hash if previous_share2 is not None else 2**256 - 1,
+ previous_share_hash=previous_share_hash,
nonce=nonce,
+ target=target,
),
)),
)],
tx_outs=[dict(value=amounts[script], script=script) for script in dests if amounts[script]],
lock_time=0,
- ), shares
+ )
+
-class Tracker(object):
- def __init__(self):
- self.shares = {} # hash -> share
- self.reverse_shares = {} # previous_hash -> share_hash
- self.heads = {} # hash -> (height, tail hash)
- self.heads = set()
+class OkayTracker(bitcoin_data.Tracker):
+ def __init__(self, net):
+ bitcoin_data.Tracker.__init__(self)
+ self.net = net
+ self.verified = bitcoin_data.Tracker()
+
+ self.get_cumulative_weights = skiplists.WeightsSkipList(self)
+
+ def add(self, share, known_verified=False):
+ bitcoin_data.Tracker.add(self, share)
+ if known_verified:
+ self.verified.add(share)
+
+ def attempt_verify(self, share, now):
+ if share.hash in self.verified.shares:
+ return True
+ height, last = self.get_height_and_last(share.hash)
+ if height < self.net.CHAIN_LENGTH and last is not None:
+ raise AssertionError()
+ try:
+ share.check(self, now, self.net)
+ except:
+ log.err(None, 'Share check failed:')
+ return False
+ else:
+ self.verified.add(share)
+ return True
- def add_share(self, share):
- if share.hash in self.shares:
- return # XXX
+ def think(self, ht, previous_block, now):
+ desired = set()
- self.shares[share.hash] = share
- self.reverse_shares.setdefault(share.previous_hash, set()).add(share.hash)
+ # O(len(self.heads))
+ # make 'unverified heads' set?
+ # for each overall head, attempt verification
+ # if it fails, attempt on parent, and repeat
+ # if no successful verification because of lack of parents, request parent
+ bads = set()
+ for head in set(self.heads) - set(self.verified.heads):
+ head_height, last = self.get_height_and_last(head)
+
+ for share in itertools.islice(self.get_chain_known(head), None if last is None else min(5, max(0, head_height - self.net.CHAIN_LENGTH))):
+ if self.attempt_verify(share, now):
+ break
+ if share.hash in self.heads:
+ bads.add(share.hash)
+ else:
+ if last is not None:
+ desired.add((self.shares[random.choice(list(self.reverse_shares[last]))].peer, last))
+ for bad in bads:
+ assert bad not in self.verified.shares
+ assert bad in self.heads
+ self.remove(bad)
- if self.reverse_shares.get(share.hash, set()):
- pass # not a head
- else:
- self.heads.add(share.hash)
- if share.previous_hash in self.heads:
- self.heads.remove(share.previous_hash)
-
-if __name__ == '__main__':
- class FakeShare(object):
- def __init__(self, hash, previous_hash):
- self.hash = hash
- self.previous_hash = previous_hash
-
- t = Tracker()
-
- t.add_share(FakeShare(1, 2))
- print t.heads
- t.add_share(FakeShare(4, 0))
- print t.heads
- t.add_share(FakeShare(3, 4))
- print t.heads
-
-# TARGET_MULTIPLIER needs to be less than the current difficulty to prevent miner clients from missing shares
-
-class Testnet(object):
- TARGET_MULTIPLIER = SPREAD = 30
- ROOT_BLOCK = 0xd5070cd4f2987ad2191af71393731a2b143f094f7b84c9e6aa9a6a
- SCRIPT = '410403ad3dee8ab3d8a9ce5dd2abfbe7364ccd9413df1d279bf1a207849310465b0956e5904b1155ecd17574778f9949589ebfd4fb33ce837c241474a225cf08d85dac'.decode('hex')
- IDENTIFIER = 0x1ae3479e4eb6700a
- PREFIX = 'd19778c812754854'.decode('hex')
- ADDRS_TABLE = 'addrs_testnet'
+ # try to get at least CHAIN_LENGTH height for each verified head, requesting parents if needed
+ for head in list(self.verified.heads):
+ head_height, last_hash = self.verified.get_height_and_last(head)
+ last_height, last_last_hash = self.get_height_and_last(last_hash)
+ # XXX review boundary conditions
+ want = max(self.net.CHAIN_LENGTH - head_height, 0)
+ can = max(last_height - 1 - self.net.CHAIN_LENGTH, 0) if last_last_hash is not None else last_height
+ get = min(want, can)
+ #print 'Z', head_height, last_hash is None, last_height, last_last_hash is None, want, can, get
+ for share in itertools.islice(self.get_chain_known(last_hash), get):
+ if not self.attempt_verify(share, now):
+ break
+ if head_height < self.net.CHAIN_LENGTH and last_last_hash is not None:
+ desired.add((self.verified.shares[random.choice(list(self.verified.reverse_shares[last_hash]))].peer, last_last_hash))
+
+ # decide best tree
+ best_tail = max(self.verified.tails, key=lambda h: self.score(max(self.verified.tails[h], key=self.verified.get_height), ht)) if self.verified.tails else None
+ # decide best verified head
+ scores = sorted(self.verified.tails.get(best_tail, []), key=lambda h: (
+ self.verified.get_work(self.verified.get_nth_parent_hash(h, min(5, self.verified.get_height(h)))),
+ ht.get_min_height(self.verified.shares[h].previous_block),
+ self.verified.shares[h].peer is None,
+ -self.verified.shares[h].time_seen
+ ))
+
+
+ if p2pool.DEBUG:
+ print len(self.verified.tails.get(best_tail, []))
+ for h in scores:
+ print ' ', format_hash(h), format_hash(self.verified.shares[h].previous_hash), (
+ self.verified.get_work(self.verified.get_nth_parent_hash(h, min(5, self.verified.get_height(h)))),
+ ht.get_min_height(self.verified.shares[h].previous_block),
+ self.verified.shares[h].peer is None,
+ -self.verified.shares[h].time_seen
+ )
+
+ # eat away at heads
+ if scores:
+ while True:
+ to_remove = set()
+ for share_hash, tail in self.heads.iteritems():
+ if share_hash in scores[-5:]:
+ continue
+ if self.shares[share_hash].time_seen > time.time() - 30:
+ continue
+ if max(self.shares[before_tail_hash].time_seen for before_tail_hash in self.reverse_shares.get(tail)) > time.time() - 120:
+ continue
+ to_remove.add(share_hash)
+ for share_hash in to_remove:
+ self.remove(share_hash)
+ if share_hash in self.verified.shares:
+ self.verified.remove(share_hash)
+ if not to_remove:
+ break
+
+ # drop tails
+ while True:
+ removed = False
+ # if removed from this, it must be removed from verified
+ for tail, heads in list(self.tails.iteritems()):
+ if min(self.get_height(head) for head in heads) < 2*self.net.CHAIN_LENGTH + 10:
+ continue
+ start = time.time()
+ for aftertail in list(self.reverse_shares.get(tail, set())):
+ self.remove(aftertail)
+ if aftertail in self.verified.shares:
+ self.verified.remove(aftertail)
+ removed = True
+ end = time.time()
+ print "removed! %x %f" % (tail, end - start)
+ if not removed:
+ break
+
+ best = scores[-1] if scores else None
+
+ if best is not None:
+ best_share = self.verified.shares[best]
+ if ht.get_min_height(best_share.header['previous_block']) < ht.get_min_height(previous_block) and best_share.bitcoin_hash != previous_block and best_share.peer is not None:
+ if p2pool.DEBUG:
+ print 'Stale detected!'
+ best = best_share.previous_hash
+
+ return best, desired
+
+ @memoize.memoize_with_backing(expiring_dict.ExpiringDict(5, get_touches=False))
+ def score(self, share_hash, ht):
+ head_height, last = self.verified.get_height_and_last(share_hash)
+ score2 = 0
+ attempts = 0
+ max_height = 0
+ share2_hash = self.verified.get_nth_parent_hash(share_hash, min(self.net.CHAIN_LENGTH//2, head_height//2)) if last is not None else share_hash
+ for share in reversed(list(itertools.islice(self.verified.get_chain_known(share2_hash), self.net.CHAIN_LENGTH))):
+ max_height = max(max_height, ht.get_min_height(share.header['previous_block']))
+ attempts += bitcoin_data.target_to_average_attempts(share.target)
+ this_score = attempts//(ht.get_highest_height() - max_height + 1)
+ if this_score > score2:
+ score2 = this_score
+ return min(head_height, self.net.CHAIN_LENGTH), score2
-class Main(object):
- TARGET_MULTIPLIER = SPREAD = 600
- ROOT_BLOCK = 0x11a22c6e314b1a3f44cbbf50246187a37756ea8af4d41c43a8d6
+def format_hash(x):
+ if x is None:
+ return 'xxxxxxxx'
+ return '%08x' % (x % 2**32)
+
+class Mainnet(bitcoin_data.Mainnet):
+ SHARE_PERIOD = 5 # seconds
+ CHAIN_LENGTH = 24*60*60//5 # shares
+ TARGET_LOOKBEHIND = 200 # shares
+ SPREAD = 3 # blocks
SCRIPT = '4104ffd03de44a6e11b9917f3a29f9443283d9871c9d743ef30d5eddcd37094b64d1b3d8090496b53256786bf5c82932ec23c3b74d9f05a6f95a8b5529352656664bac'.decode('hex')
- IDENTIFIER = 0x7452839666e1f8f8
- PREFIX = '2d4224bf18c87b87'.decode('hex')
+ IDENTIFIER = 'fc70035c7a81bc6f'.decode('hex')
+ PREFIX = '2472ef181efcd37b'.decode('hex')
ADDRS_TABLE = 'addrs'
+ P2P_PORT = 9333
+ MAX_TARGET = 2**256//2**32 - 1
+ PERSIST = True
+ HEADERSTORE_FILENAME = 'headers.dat'
+
+class Testnet(bitcoin_data.Testnet):
+ SHARE_PERIOD = 1 # seconds
+ CHAIN_LENGTH = 24*60*60//5 # shares
+ TARGET_LOOKBEHIND = 200 # shares
+ SPREAD = 3 # blocks
+ SCRIPT = '410403ad3dee8ab3d8a9ce5dd2abfbe7364ccd9413df1d279bf1a207849310465b0956e5904b1155ecd17574778f9949589ebfd4fb33ce837c241474a225cf08d85dac'.decode('hex')
+ IDENTIFIER = '5fc2be2d4f0d6bfb'.decode('hex')
+ PREFIX = '3f6057a15036f441'.decode('hex')
+ ADDRS_TABLE = 'addrs_testnet'
+ P2P_PORT = 19333
+ MAX_TARGET = 2**256//2**20 - 1
+ PERSIST = False
+ HEADERSTORE_FILENAME = 'testnet_headers.dat'
git://git.novaco.in / p2pool.git / blobdiff