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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

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1#!/usr/bin/env python3
2# Copyright (c) 2025-present The Bitcoin Core developers
3# Distributed under the MIT software license, see the accompanying
4# file COPYING or http://www.opensource.org/licenses/mit-license.php.
5"""Test mining on an alternate mainnet
6
7Test mining related RPCs that involve difficulty adjustment, which
8regtest doesn't have.
9
10It uses an alternate mainnet chain. See data/README.md for how it was generated.
11
12Mine one retarget period worth of blocks with a short interval in
13order to maximally raise the difficulty. Verify this using the getmininginfo RPC.
14
15"""
16
17from test_framework.test_framework import BitcoinTestFramework
18from test_framework.util import (
19    assert_equal,
20)
21from test_framework.blocktools import (
22    DIFF_1_N_BITS,
23    DIFF_1_TARGET,
24    DIFF_4_N_BITS,
25    DIFF_4_TARGET,
26    create_coinbase,
27    nbits_str,
28    target_str
29)
30
31from test_framework.messages import (
32    CBlock,
33    SEQUENCE_FINAL,
34)
35
36import json
37import os
38
39# See data/README.md
40COINBASE_SCRIPT_PUBKEY="76a914eadbac7f36c37e39361168b7aaee3cb24a25312d88ac"
41
42class MiningMainnetTest(BitcoinTestFramework):
43
44    def set_test_params(self):
45        self.num_nodes = 1
46        self.setup_clean_chain = True
47        self.chain = "" # main
48
49    def add_options(self, parser):
50        parser.add_argument(
51            '--datafile',
52            default='data/mainnet_alt.json',
53            help='Block data file (default: %(default)s)',
54        )
55
56    def mine(self, height, prev_hash, blocks, node):
57        self.log.debug(f"height={height}")
58        block = CBlock()
59        block.nVersion = 0x20000000
60        block.hashPrevBlock = int(prev_hash, 16)
61        block.nTime = blocks['timestamps'][height - 1]
62        block.nBits = DIFF_1_N_BITS if height < 2016 else DIFF_4_N_BITS
63        block.nNonce = blocks['nonces'][height - 1]
64        block.vtx = [create_coinbase(height=height, script_pubkey=bytes.fromhex(COINBASE_SCRIPT_PUBKEY), halving_period=210000)]
65        # The alternate mainnet chain was mined with non-timelocked coinbase txs.
66        block.vtx[0].nLockTime = 0
67        block.vtx[0].vin[0].nSequence = SEQUENCE_FINAL
68        block.hashMerkleRoot = block.calc_merkle_root()
69        block_hex = block.serialize(with_witness=False).hex()
70        self.log.debug(block_hex)
71        assert_equal(node.submitblock(block_hex), None)
72        prev_hash = node.getbestblockhash()
73        assert_equal(prev_hash, block.hash_hex)
74        return prev_hash
75
76
77    def run_test(self):
78        node = self.nodes[0]
79        # Clear disk space warning
80        node.stderr.seek(0)
81        node.stderr.truncate()
82        self.log.info("Load alternative mainnet blocks")
83        path = os.path.join(os.path.dirname(os.path.realpath(__file__)), self.options.datafile)
84        prev_hash = node.getbestblockhash()
85        blocks = None
86        with open(path) as f:
87            blocks = json.load(f)
88            n_blocks = len(blocks['timestamps'])
89            assert_equal(n_blocks, 2016)
90
91        # Mine up to the last block of the first retarget period
92        for i in range(2015):
93            prev_hash = self.mine(i + 1, prev_hash, blocks, node)
94
95        assert_equal(node.getblockcount(), 2015)
96
97        self.log.info("Check difficulty adjustment with getmininginfo")
98        mining_info = node.getmininginfo()
99        assert_equal(mining_info['difficulty'], 1)
100        assert_equal(mining_info['bits'], nbits_str(DIFF_1_N_BITS))
101        assert_equal(mining_info['target'], target_str(DIFF_1_TARGET))
102
103        assert_equal(mining_info['next']['height'], 2016)
104        assert_equal(mining_info['next']['difficulty'], 4)
105        assert_equal(mining_info['next']['bits'], nbits_str(DIFF_4_N_BITS))
106        assert_equal(mining_info['next']['target'], target_str(DIFF_4_TARGET))
107
108        # Mine first block of the second retarget period
109        height = 2016
110        prev_hash = self.mine(height, prev_hash, blocks, node)
111        assert_equal(node.getblockcount(), height)
112
113        mining_info = node.getmininginfo()
114        assert_equal(mining_info['difficulty'], 4)
115
116        self.log.info("getblock RPC should show historical target")
117        block_info = node.getblock(node.getblockhash(1))
118
119        assert_equal(block_info['difficulty'], 1)
120        assert_equal(block_info['bits'], nbits_str(DIFF_1_N_BITS))
121        assert_equal(block_info['target'], target_str(DIFF_1_TARGET))
122
123
124if __name__ == '__main__':
125    MiningMainnetTest(__file__).main()
126

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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