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authorAnthony Towns <aj@erisian.com.au>2020-09-10 08:37:55 +1000
committerAnthony Towns <aj@erisian.com.au>2021-01-12 18:34:29 +1000
commitff7dbdc08a11e999e7718b6ac7645ecceef81188 (patch)
tree4ff4acd8207fcdbc4983da2efa463324f1a0af86
parent13762bcc9618138dd28b53c2031defdc9d762d26 (diff)
contrib/signet: Add script for generating a signet chain
-rwxr-xr-xcontrib/signet/miner639
1 files changed, 639 insertions, 0 deletions
diff --git a/contrib/signet/miner b/contrib/signet/miner
new file mode 100755
index 0000000000..a3fba49d0e
--- /dev/null
+++ b/contrib/signet/miner
@@ -0,0 +1,639 @@
+#!/usr/bin/env python3
+# Copyright (c) 2020 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+import argparse
+import base64
+import json
+import logging
+import math
+import os.path
+import re
+import struct
+import sys
+import time
+import subprocess
+
+from binascii import unhexlify
+from io import BytesIO
+
+PATH_BASE_CONTRIB_SIGNET = os.path.abspath(os.path.dirname(os.path.realpath(__file__)))
+PATH_BASE_TEST_FUNCTIONAL = os.path.abspath(os.path.join(PATH_BASE_CONTRIB_SIGNET, "..", "..", "test", "functional"))
+sys.path.insert(0, PATH_BASE_TEST_FUNCTIONAL)
+
+from test_framework.blocktools import WITNESS_COMMITMENT_HEADER, script_BIP34_coinbase_height # noqa: E402
+from test_framework.messages import CBlock, CBlockHeader, COutPoint, CTransaction, CTxIn, CTxInWitness, CTxOut, FromHex, ToHex, deser_string, hash256, ser_compact_size, ser_string, ser_uint256, uint256_from_str # noqa: E402
+from test_framework.script import CScriptOp # noqa: E402
+
+logging.basicConfig(
+ format='%(asctime)s %(levelname)s %(message)s',
+ level=logging.INFO,
+ datefmt='%Y-%m-%d %H:%M:%S')
+
+SIGNET_HEADER = b"\xec\xc7\xda\xa2"
+PSBT_SIGNET_BLOCK = b"\xfc\x06signetb" # proprietary PSBT global field holding the block being signed
+RE_MULTIMINER = re.compile("^(\d+)(-(\d+))?/(\d+)$")
+
+# #### some helpers that could go into test_framework
+
+# like FromHex, but without the hex part
+def FromBinary(cls, stream):
+ """deserialize a binary stream (or bytes object) into an object"""
+ # handle bytes object by turning it into a stream
+ was_bytes = isinstance(stream, bytes)
+ if was_bytes:
+ stream = BytesIO(stream)
+ obj = cls()
+ obj.deserialize(stream)
+ if was_bytes:
+ assert len(stream.read()) == 0
+ return obj
+
+class PSBTMap:
+ """Class for serializing and deserializing PSBT maps"""
+
+ def __init__(self, map=None):
+ self.map = map if map is not None else {}
+
+ def deserialize(self, f):
+ m = {}
+ while True:
+ k = deser_string(f)
+ if len(k) == 0:
+ break
+ v = deser_string(f)
+ if len(k) == 1:
+ k = k[0]
+ assert k not in m
+ m[k] = v
+ self.map = m
+
+ def serialize(self):
+ m = b""
+ for k,v in self.map.items():
+ if isinstance(k, int) and 0 <= k and k <= 255:
+ k = bytes([k])
+ m += ser_compact_size(len(k)) + k
+ m += ser_compact_size(len(v)) + v
+ m += b"\x00"
+ return m
+
+class PSBT:
+ """Class for serializing and deserializing PSBTs"""
+
+ def __init__(self):
+ self.g = PSBTMap()
+ self.i = []
+ self.o = []
+ self.tx = None
+
+ def deserialize(self, f):
+ assert f.read(5) == b"psbt\xff"
+ self.g = FromBinary(PSBTMap, f)
+ assert 0 in self.g.map
+ self.tx = FromBinary(CTransaction, self.g.map[0])
+ self.i = [FromBinary(PSBTMap, f) for _ in self.tx.vin]
+ self.o = [FromBinary(PSBTMap, f) for _ in self.tx.vout]
+ return self
+
+ def serialize(self):
+ assert isinstance(self.g, PSBTMap)
+ assert isinstance(self.i, list) and all(isinstance(x, PSBTMap) for x in self.i)
+ assert isinstance(self.o, list) and all(isinstance(x, PSBTMap) for x in self.o)
+ assert 0 in self.g.map
+ tx = FromBinary(CTransaction, self.g.map[0])
+ assert len(tx.vin) == len(self.i)
+ assert len(tx.vout) == len(self.o)
+
+ psbt = [x.serialize() for x in [self.g] + self.i + self.o]
+ return b"psbt\xff" + b"".join(psbt)
+
+ def to_base64(self):
+ return base64.b64encode(self.serialize()).decode("utf8")
+
+ @classmethod
+ def from_base64(cls, b64psbt):
+ return FromBinary(cls, base64.b64decode(b64psbt))
+
+# #####
+
+def create_coinbase(height, value, spk):
+ cb = CTransaction()
+ cb.vin = [CTxIn(COutPoint(0, 0xffffffff), script_BIP34_coinbase_height(height), 0xffffffff)]
+ cb.vout = [CTxOut(value, spk)]
+ return cb
+
+def get_witness_script(witness_root, witness_nonce):
+ commitment = uint256_from_str(hash256(ser_uint256(witness_root) + ser_uint256(witness_nonce)))
+ return b"\x6a" + CScriptOp.encode_op_pushdata(WITNESS_COMMITMENT_HEADER + ser_uint256(commitment))
+
+def signet_txs(block, challenge):
+ # assumes signet solution has not been added yet so does not need
+ # to be removed
+
+ txs = block.vtx[:]
+ txs[0] = CTransaction(txs[0])
+ txs[0].vout[-1].scriptPubKey += CScriptOp.encode_op_pushdata(SIGNET_HEADER)
+ hashes = []
+ for tx in txs:
+ tx.rehash()
+ hashes.append(ser_uint256(tx.sha256))
+ mroot = block.get_merkle_root(hashes)
+
+ sd = b""
+ sd += struct.pack("<i", block.nVersion)
+ sd += ser_uint256(block.hashPrevBlock)
+ sd += ser_uint256(mroot)
+ sd += struct.pack("<I", block.nTime)
+
+ to_spend = CTransaction()
+ to_spend.nVersion = 0
+ to_spend.nLockTime = 0
+ to_spend.vin = [CTxIn(COutPoint(0, 0xFFFFFFFF), b"\x00" + CScriptOp.encode_op_pushdata(sd), 0)]
+ to_spend.vout = [CTxOut(0, challenge)]
+ to_spend.rehash()
+
+ spend = CTransaction()
+ spend.nVersion = 0
+ spend.nLockTime = 0
+ spend.vin = [CTxIn(COutPoint(to_spend.sha256, 0), b"", 0)]
+ spend.vout = [CTxOut(0, b"\x6a")]
+
+ return spend, to_spend
+
+def do_createpsbt(block, signme, spendme):
+ psbt = PSBT()
+ psbt.g = PSBTMap( {0: signme.serialize(),
+ PSBT_SIGNET_BLOCK: block.serialize()
+ } )
+ psbt.i = [ PSBTMap( {0: spendme.serialize(),
+ 3: bytes([1,0,0,0])})
+ ]
+ psbt.o = [ PSBTMap() ]
+ return psbt.to_base64()
+
+def do_decode_psbt(b64psbt):
+ psbt = PSBT.from_base64(b64psbt)
+
+ assert len(psbt.tx.vin) == 1
+ assert len(psbt.tx.vout) == 1
+ assert PSBT_SIGNET_BLOCK in psbt.g.map
+
+ scriptSig = psbt.i[0].map.get(7, b"")
+ scriptWitness = psbt.i[0].map.get(8, b"\x00")
+
+ return FromBinary(CBlock, psbt.g.map[PSBT_SIGNET_BLOCK]), ser_string(scriptSig) + scriptWitness
+
+def finish_block(block, signet_solution, grind_cmd):
+ block.vtx[0].vout[-1].scriptPubKey += CScriptOp.encode_op_pushdata(SIGNET_HEADER + signet_solution)
+ block.vtx[0].rehash()
+ block.hashMerkleRoot = block.calc_merkle_root()
+ if grind_cmd is None:
+ block.solve()
+ else:
+ headhex = CBlockHeader.serialize(block).hex()
+ cmd = grind_cmd.split(" ") + [headhex]
+ newheadhex = subprocess.run(cmd, stdout=subprocess.PIPE, input=b"", check=True).stdout.strip()
+ newhead = FromHex(CBlockHeader(), newheadhex.decode('utf8'))
+ block.nNonce = newhead.nNonce
+ block.rehash()
+ return block
+
+def generate_psbt(tmpl, reward_spk, *, blocktime=None):
+ signet_spk = tmpl["signet_challenge"]
+ signet_spk_bin = unhexlify(signet_spk)
+
+ cbtx = create_coinbase(height=tmpl["height"], value=tmpl["coinbasevalue"], spk=reward_spk)
+ cbtx.vin[0].nSequence = 2**32-2
+ cbtx.rehash()
+
+ block = CBlock()
+ block.nVersion = tmpl["version"]
+ block.hashPrevBlock = int(tmpl["previousblockhash"], 16)
+ block.nTime = tmpl["curtime"] if blocktime is None else blocktime
+ if block.nTime < tmpl["mintime"]:
+ block.nTime = tmpl["mintime"]
+ block.nBits = int(tmpl["bits"], 16)
+ block.nNonce = 0
+ block.vtx = [cbtx] + [FromHex(CTransaction(), t["data"]) for t in tmpl["transactions"]]
+
+ witnonce = 0
+ witroot = block.calc_witness_merkle_root()
+ cbwit = CTxInWitness()
+ cbwit.scriptWitness.stack = [ser_uint256(witnonce)]
+ block.vtx[0].wit.vtxinwit = [cbwit]
+ block.vtx[0].vout.append(CTxOut(0, get_witness_script(witroot, witnonce)))
+
+ signme, spendme = signet_txs(block, signet_spk_bin)
+
+ return do_createpsbt(block, signme, spendme)
+
+def get_reward_address(args, height):
+ if args.address is not None:
+ return args.address
+
+ if '*' not in args.descriptor:
+ addr = json.loads(args.bcli("deriveaddresses", args.descriptor))[0]
+ args.address = addr
+ return addr
+
+ remove = [k for k in args.derived_addresses.keys() if k+20 <= height]
+ for k in remove:
+ del args.derived_addresses[k]
+
+ addr = args.derived_addresses.get(height, None)
+ if addr is None:
+ addrs = json.loads(args.bcli("deriveaddresses", args.descriptor, "[%d,%d]" % (height, height+20)))
+ addr = addrs[0]
+ for k, a in enumerate(addrs):
+ args.derived_addresses[height+k] = a
+
+ return addr
+
+def get_reward_addr_spk(args, height):
+ assert args.address is not None or args.descriptor is not None
+
+ if hasattr(args, "reward_spk"):
+ return args.address, args.reward_spk
+
+ reward_addr = get_reward_address(args, height)
+ reward_spk = unhexlify(json.loads(args.bcli("getaddressinfo", reward_addr))["scriptPubKey"])
+ if args.address is not None:
+ # will always be the same, so cache
+ args.reward_spk = reward_spk
+
+ return reward_addr, reward_spk
+
+def do_genpsbt(args):
+ tmpl = json.load(sys.stdin)
+ _, reward_spk = get_reward_addr_spk(args, tmpl["height"])
+ psbt = generate_psbt(tmpl, reward_spk)
+ print(psbt)
+
+def do_solvepsbt(args):
+ block, signet_solution = do_decode_psbt(sys.stdin.read())
+ block = finish_block(block, signet_solution, args.grind_cmd)
+ print(ToHex(block))
+
+def nbits_to_target(nbits):
+ shift = (nbits >> 24) & 0xff
+ return (nbits & 0x00ffffff) * 2**(8*(shift - 3))
+
+def target_to_nbits(target):
+ tstr = "{0:x}".format(target)
+ if len(tstr) < 6:
+ tstr = ("000000"+tstr)[-6:]
+ if len(tstr) % 2 != 0:
+ tstr = "0" + tstr
+ if int(tstr[0],16) >= 0x8:
+ # avoid "negative"
+ tstr = "00" + tstr
+ fix = int(tstr[:6], 16)
+ sz = len(tstr)//2
+ if tstr[6:] != "0"*(sz*2-6):
+ fix += 1
+
+ return int("%02x%06x" % (sz,fix), 16)
+
+def seconds_to_hms(s):
+ if s == 0:
+ return "0s"
+ neg = (s < 0)
+ if neg:
+ s = -s
+ out = ""
+ if s % 60 > 0:
+ out = "%ds" % (s % 60)
+ s //= 60
+ if s % 60 > 0:
+ out = "%dm%s" % (s % 60, out)
+ s //= 60
+ if s > 0:
+ out = "%dh%s" % (s, out)
+ if neg:
+ out = "-" + out
+ return out
+
+def next_block_delta(last_nbits, last_hash, ultimate_target, do_poisson):
+ # strategy:
+ # 1) work out how far off our desired target we are
+ # 2) cap it to a factor of 4 since that's the best we can do in a single retarget period
+ # 3) use that to work out the desired average interval in this retarget period
+ # 4) if doing poisson, use the last hash to pick a uniformly random number in [0,1), and work out a random multiplier to vary the average by
+ # 5) cap the resulting interval between 1 second and 1 hour to avoid extremes
+
+ INTERVAL = 600.0*2016/2015 # 10 minutes, adjusted for the off-by-one bug
+
+ current_target = nbits_to_target(last_nbits)
+ retarget_factor = ultimate_target / current_target
+ retarget_factor = max(0.25, min(retarget_factor, 4.0))
+
+ avg_interval = INTERVAL * retarget_factor
+
+ if do_poisson:
+ det_rand = int(last_hash[-8:], 16) * 2**-32
+ this_interval_variance = -math.log1p(-det_rand)
+ else:
+ this_interval_variance = 1
+
+ this_interval = avg_interval * this_interval_variance
+ this_interval = max(1, min(this_interval, 3600))
+
+ return this_interval
+
+def next_block_is_mine(last_hash, my_blocks):
+ det_rand = int(last_hash[-16:-8], 16)
+ return my_blocks[0] <= (det_rand % my_blocks[2]) < my_blocks[1]
+
+def do_generate(args):
+ if args.max_blocks is not None:
+ if args.ongoing:
+ logging.error("Cannot specify both --ongoing and --max-blocks")
+ return 1
+ if args.max_blocks < 1:
+ logging.error("N must be a positive integer")
+ return 1
+ max_blocks = args.max_blocks
+ elif args.ongoing:
+ max_blocks = None
+ else:
+ max_blocks = 1
+
+ if args.set_block_time is not None and max_blocks != 1:
+ logging.error("Cannot specify --ongoing or --max-blocks > 1 when using --set-block-time")
+ return 1
+ if args.set_block_time is not None and args.set_block_time < 0:
+ args.set_block_time = time.time()
+ logging.info("Treating negative block time as current time (%d)" % (args.set_block_time))
+
+ if args.min_nbits:
+ if args.nbits is not None:
+ logging.error("Cannot specify --nbits and --min-nbits")
+ return 1
+ args.nbits = "1e0377ae"
+ logging.info("Using nbits=%s" % (args.nbits))
+
+ if args.set_block_time is None:
+ if args.nbits is None or len(args.nbits) != 8:
+ logging.error("Must specify --nbits (use calibrate command to determine value)")
+ return 1
+
+ if args.multiminer is None:
+ my_blocks = (0,1,1)
+ else:
+ if not args.ongoing:
+ logging.error("Cannot specify --multiminer without --ongoing")
+ return 1
+ m = RE_MULTIMINER.match(args.multiminer)
+ if m is None:
+ logging.error("--multiminer argument must be k/m or j-k/m")
+ return 1
+ start,_,stop,total = m.groups()
+ if stop is None:
+ stop = start
+ start, stop, total = map(int, (start, stop, total))
+ if stop < start or start <= 0 or total < stop or total == 0:
+ logging.error("Inconsistent values for --multiminer")
+ return 1
+ my_blocks = (start-1, stop, total)
+
+ ultimate_target = nbits_to_target(int(args.nbits,16))
+
+ mined_blocks = 0
+ bestheader = {"hash": None}
+ lastheader = None
+ while max_blocks is None or mined_blocks < max_blocks:
+
+ # current status?
+ bci = json.loads(args.bcli("getblockchaininfo"))
+
+ if bestheader["hash"] != bci["bestblockhash"]:
+ bestheader = json.loads(args.bcli("getblockheader", bci["bestblockhash"]))
+
+ if lastheader is None:
+ lastheader = bestheader["hash"]
+ elif bestheader["hash"] != lastheader:
+ next_delta = next_block_delta(int(bestheader["bits"], 16), bestheader["hash"], ultimate_target, args.poisson)
+ next_delta += bestheader["time"] - time.time()
+ next_is_mine = next_block_is_mine(bestheader["hash"], my_blocks)
+ logging.info("Received new block at height %d; next in %s (%s)", bestheader["height"], seconds_to_hms(next_delta), ("mine" if next_is_mine else "backup"))
+ lastheader = bestheader["hash"]
+
+ # when is the next block due to be mined?
+ now = time.time()
+ if args.set_block_time is not None:
+ logging.debug("Setting start time to %d", args.set_block_time)
+ mine_time = args.set_block_time
+ action_time = now
+ is_mine = True
+ elif bestheader["height"] == 0:
+ logging.error("When mining first block in a new signet, must specify --set-block-time")
+ return 1
+ else:
+
+ time_delta = next_block_delta(int(bestheader["bits"], 16), bci["bestblockhash"], ultimate_target, args.poisson)
+ mine_time = bestheader["time"] + time_delta
+
+ is_mine = next_block_is_mine(bci["bestblockhash"], my_blocks)
+
+ action_time = mine_time
+ if not is_mine:
+ action_time += args.backup_delay
+
+ if args.standby_delay > 0:
+ action_time += args.standby_delay
+ elif mined_blocks == 0:
+ # for non-standby, always mine immediately on startup,
+ # even if the next block shouldn't be ours
+ action_time = now
+
+ # don't want fractional times so round down
+ mine_time = int(mine_time)
+ action_time = int(action_time)
+
+ # can't mine a block 2h in the future; 1h55m for some safety
+ action_time = max(action_time, mine_time - 6900)
+
+ # ready to go? otherwise sleep and check for new block
+ if now < action_time:
+ sleep_for = min(action_time - now, 60)
+ if mine_time < now:
+ # someone else might have mined the block,
+ # so check frequently, so we don't end up late
+ # mining the next block if it's ours
+ sleep_for = min(20, sleep_for)
+ minestr = "mine" if is_mine else "backup"
+ logging.debug("Sleeping for %s, next block due in %s (%s)" % (seconds_to_hms(sleep_for), seconds_to_hms(mine_time - now), minestr))
+ time.sleep(sleep_for)
+ continue
+
+ # gbt
+ tmpl = json.loads(args.bcli("getblocktemplate", '{"rules":["signet","segwit"]}'))
+ if tmpl["previousblockhash"] != bci["bestblockhash"]:
+ logging.warning("GBT based off unexpected block (%s not %s), retrying", tmpl["previousblockhash"], bci["bestblockhash"])
+ time.sleep(1)
+ continue
+
+ logging.debug("GBT template: %s", tmpl)
+
+ if tmpl["mintime"] > mine_time:
+ logging.info("Updating block time from %d to %d", mine_time, tmpl["mintime"])
+ mine_time = tmpl["mintime"]
+ if mine_time > now:
+ logging.error("GBT mintime is in the future: %d is %d seconds later than %d", mine_time, (mine_time-now), now)
+ return 1
+
+ # address for reward
+ reward_addr, reward_spk = get_reward_addr_spk(args, tmpl["height"])
+
+ # mine block
+ logging.debug("Mining block delta=%s start=%s mine=%s", seconds_to_hms(mine_time-bestheader["time"]), mine_time, is_mine)
+ mined_blocks += 1
+ psbt = generate_psbt(tmpl, reward_spk, blocktime=mine_time)
+ psbt_signed = json.loads(args.bcli("-stdin", "walletprocesspsbt", input=psbt.encode('utf8')))
+ if not psbt_signed.get("complete",False):
+ logging.debug("Generated PSBT: %s" % (psbt,))
+ sys.stderr.write("PSBT signing failed")
+ return 1
+ block, signet_solution = do_decode_psbt(psbt_signed["psbt"])
+ block = finish_block(block, signet_solution, args.grind_cmd)
+
+ # submit block
+ r = args.bcli("-stdin", "submitblock", input=ToHex(block).encode('utf8'))
+
+ # report
+ bstr = "block" if is_mine else "backup block"
+
+ next_delta = next_block_delta(block.nBits, block.hash, ultimate_target, args.poisson)
+ next_delta += block.nTime - time.time()
+ next_is_mine = next_block_is_mine(block.hash, my_blocks)
+
+ logging.debug("Block hash %s payout to %s", block.hash, reward_addr)
+ logging.info("Mined %s at height %d; next in %s (%s)", bstr, tmpl["height"], seconds_to_hms(next_delta), ("mine" if next_is_mine else "backup"))
+ if r != "":
+ logging.warning("submitblock returned %s for height %d hash %s", r, tmpl["height"], block.hash)
+ lastheader = block.hash
+
+def do_calibrate(args):
+ if args.nbits is not None and args.seconds is not None:
+ sys.stderr.write("Can only specify one of --nbits or --seconds\n")
+ return 1
+ if args.nbits is not None and len(args.nbits) != 8:
+ sys.stderr.write("Must specify 8 hex digits for --nbits")
+ return 1
+
+ TRIALS = 600 # gets variance down pretty low
+ TRIAL_BITS = 0x1e3ea75f # takes about 5m to do 600 trials
+ #TRIAL_BITS = 0x1e7ea75f # XXX
+
+ header = CBlockHeader()
+ header.nBits = TRIAL_BITS
+ targ = nbits_to_target(header.nBits)
+
+ start = time.time()
+ count = 0
+ #CHECKS=[]
+ for i in range(TRIALS):
+ header.nTime = i
+ header.nNonce = 0
+ headhex = header.serialize().hex()
+ cmd = args.grind_cmd.split(" ") + [headhex]
+ newheadhex = subprocess.run(cmd, stdout=subprocess.PIPE, input=b"", check=True).stdout.strip()
+ #newhead = FromHex(CBlockHeader(), newheadhex.decode('utf8'))
+ #count += newhead.nNonce
+ #if (i+1) % 100 == 0:
+ # CHECKS.append((i+1, count, time.time()-start))
+
+ #print("checks =", [c*1.0 / (b*targ*2**-256) for _,b,c in CHECKS])
+
+ avg = (time.time() - start) * 1.0 / TRIALS
+ #exp_count = 2**256 / targ * TRIALS
+ #print("avg =", avg, "count =", count, "exp_count =", exp_count)
+
+ if args.nbits is not None:
+ want_targ = nbits_to_target(int(args.nbits,16))
+ want_time = avg*targ/want_targ
+ else:
+ want_time = args.seconds if args.seconds is not None else 25
+ want_targ = int(targ*(avg/want_time))
+
+ print("nbits=%08x for %ds average mining time" % (target_to_nbits(want_targ), want_time))
+ return 0
+
+def bitcoin_cli(basecmd, args, **kwargs):
+ cmd = basecmd + ["-signet"] + args
+ logging.debug("Calling bitcoin-cli: %r", cmd)
+ out = subprocess.run(cmd, stdout=subprocess.PIPE, **kwargs, check=True).stdout
+ if isinstance(out, bytes):
+ out = out.decode('utf8')
+ return out.strip()
+
+def main():
+ parser = argparse.ArgumentParser()
+ parser.add_argument("--cli", default="bitcoin-cli", type=str, help="bitcoin-cli command")
+ parser.add_argument("--debug", action="store_true", help="Print debugging info")
+ parser.add_argument("--quiet", action="store_true", help="Only print warnings/errors")
+
+ cmds = parser.add_subparsers(help="sub-commands")
+ genpsbt = cmds.add_parser("genpsbt", help="Generate a block PSBT for signing")
+ genpsbt.set_defaults(fn=do_genpsbt)
+
+ solvepsbt = cmds.add_parser("solvepsbt", help="Solve a signed block PSBT")
+ solvepsbt.set_defaults(fn=do_solvepsbt)
+
+ generate = cmds.add_parser("generate", help="Mine blocks")
+ generate.set_defaults(fn=do_generate)
+ generate.add_argument("--ongoing", action="store_true", help="Keep mining blocks")
+ generate.add_argument("--max-blocks", default=None, type=int, help="Max blocks to mine (default=1)")
+ generate.add_argument("--set-block-time", default=None, type=int, help="Set block time (unix timestamp)")
+ generate.add_argument("--nbits", default=None, type=str, help="Target nBits (specify difficulty)")
+ generate.add_argument("--min-nbits", action="store_true", help="Target minimum nBits (use min difficulty)")
+ generate.add_argument("--poisson", action="store_true", help="Simulate randomised block times")
+ #generate.add_argument("--signcmd", default=None, type=str, help="Alternative signing command")
+ generate.add_argument("--multiminer", default=None, type=str, help="Specify which set of blocks to mine (eg: 1-40/100 for the first 40%%, 2/3 for the second 3rd)")
+ generate.add_argument("--backup-delay", default=300, type=int, help="Seconds to delay before mining blocks reserved for other miners (default=300)")
+ generate.add_argument("--standby-delay", default=0, type=int, help="Seconds to delay before mining blocks (default=0)")
+
+ calibrate = cmds.add_parser("calibrate", help="Calibrate difficulty")
+ calibrate.set_defaults(fn=do_calibrate)
+ calibrate.add_argument("--nbits", type=str, default=None)
+ calibrate.add_argument("--seconds", type=int, default=None)
+
+ for sp in [genpsbt, generate]:
+ sp.add_argument("--address", default=None, type=str, help="Address for block reward payment")
+ sp.add_argument("--descriptor", default=None, type=str, help="Descriptor for block reward payment")
+
+ for sp in [solvepsbt, generate, calibrate]:
+ sp.add_argument("--grind-cmd", default=None, type=str, help="Command to grind a block header for proof-of-work")
+
+ args = parser.parse_args(sys.argv[1:])
+
+ args.bcli = lambda *a, input=b"", **kwargs: bitcoin_cli(args.cli.split(" "), list(a), input=input, **kwargs)
+
+ if hasattr(args, "address") and hasattr(args, "descriptor"):
+ if args.address is None and args.descriptor is None:
+ sys.stderr.write("Must specify --address or --descriptor\n")
+ return 1
+ elif args.address is not None and args.descriptor is not None:
+ sys.stderr.write("Only specify one of --address or --descriptor\n")
+ return 1
+ args.derived_addresses = {}
+
+ if args.debug:
+ logging.getLogger().setLevel(logging.DEBUG)
+ elif args.quiet:
+ logging.getLogger().setLevel(logging.WARNING)
+ else:
+ logging.getLogger().setLevel(logging.INFO)
+
+ if hasattr(args, "fn"):
+ return args.fn(args)
+ else:
+ logging.error("Must specify command")
+ return 1
+
+if __name__ == "__main__":
+ main()
+
+