BITCOIN MAINNETLive explorer status

Explorer Mempool Feed Forum Visualizer Receipts Tools Learn Code

Inside Bitcoin

Opening the selected file…

₿MyBitcoinExplorer

Bitcoin, in focus.
Explore the network. Understand the connections.

Explore Bitcoin with clarity.

READ THE CODE

Inside Bitcoin

The code behind the network, with room to understand it.

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

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

bitcoin / bitcoinstable

Find a file

▤ combined_log_template.html

▤ create_cache.py

▤ example_test.py

▤ feature_abortnode.py

▤ feature_addrman.py

▤ feature_anchors.py

▤ feature_asmap.py

▤ feature_assumeutxo.py

▤ feature_assumevalid.py

▤ feature_bind_extra.py

▤ feature_bind_port_discover.py

▤ feature_bind_port_externalip.py

▤ feature_bip68_sequence.py

▤ feature_block.py

▤ feature_blocksdir.py

▤ feature_blocksxor.py

▤ feature_chain_tiebreaks.py

▤ feature_cltv.py

▤ feature_coinstatsindex_compatibility.py

▤ feature_coinstatsindex.py

▤ feature_config_args.py

▤ feature_csv_activation.py

▤ feature_dbcrash.py

▤ feature_dersig.py

▤ feature_dirsymlinks.py

▤ feature_discover.py

▤ feature_fastprune.py

▤ feature_fee_estimation.py

▤ feature_filelock.py

▤ feature_framework_miniwallet.py

▤ feature_framework_startup_failures.py

▤ feature_framework_testshell.py

▤ feature_framework_unit_tests.py

▤ feature_help.py

▤ feature_includeconf.py

▤ feature_index_prune.py

▤ feature_init.py

▤ feature_loadblock.py

▤ feature_logging.py

▤ feature_maxtipage.py

▤ feature_maxuploadtarget.py

▤ feature_minchainwork.py

▤ feature_notifications.py

▤ feature_nulldummy.py

▤ feature_port.py

▤ feature_posix_fs_permissions.py

▤ feature_presegwit_node_upgrade.py

▤ feature_proxy.py

▤ feature_prune_stale_fork.py

▤ feature_pruning.py

▤ feature_rbf.py

▤ feature_reindex_init.py

▤ feature_reindex_readonly.py

▤ feature_reindex.py

▤ feature_remove_pruned_files_on_startup.py

▤ feature_segwit.py

▤ feature_settings.py

▤ feature_shutdown.py

▤ feature_signet.py

▤ feature_startupnotify.py

▤ feature_taproot.py

▤ feature_torcontrol.py

▤ feature_txindex_compatibility.py

▤ feature_uacomment.py

▤ feature_unsupported_utxo_db.py

▤ feature_utxo_abort_on_error.py

▤ feature_utxo_set_hash.py

▤ feature_versionbits_warning.py

▤ interface_bitcoin_cli.py

▤ interface_gui.py

▤ interface_http.py

▤ interface_ipc_cli.py

▤ interface_ipc_mining.py

▤ interface_ipc.py

▤ interface_rest.py

▤ interface_rpc.py

▤ interface_usdt_coinselection.py

▤ interface_usdt_mempool.py

▤ interface_usdt_net.py

▤ interface_usdt_utxocache.py

▤ interface_usdt_validation.py

▤ interface_zmq.py

▤ mempool_accept_wtxid.py

▤ mempool_accept.py

▤ mempool_cluster.py

▤ mempool_compatibility.py

▤ mempool_datacarrier.py

▤ mempool_dust.py

▤ mempool_ephemeral_dust.py

▤ mempool_expiry.py

▤ mempool_limit.py

▤ mempool_package_limits.py

▤ mempool_package_rbf.py

▤ mempool_packages.py

▤ mempool_persist.py

▤ mempool_reorg.py

▤ mempool_resurrect.py

▤ mempool_sigoplimit.py

▤ mempool_spend_coinbase.py

▤ mempool_truc.py

▤ mempool_unbroadcast.py

▤ mempool_updatefromblock.py

▤ mining_basic.py

▤ mining_getblocktemplate_longpoll.py

▤ mining_mainnet.py

▤ mining_prioritisetransaction.py

▤ mining_template_verification.py

▤ p2p_1p1c_network.py

▤ p2p_add_connections.py

▤ p2p_addr_relay.py

▤ p2p_addr_selfannouncement.py

▤ p2p_addrfetch.py

▤ p2p_addrv2_relay.py

▤ p2p_bip434_feature.py

▤ p2p_block_sync.py

▤ p2p_blockfilters.py

▤ p2p_blocksonly.py

▤ p2p_compactblocks_blocksonly.py

▤ p2p_compactblocks_hb.py

▤ p2p_compactblocks.py

▤ p2p_connection_limits.py

▤ p2p_disconnect_ban.py

▤ p2p_getaddr_caching.py

▤ p2p_getdata.py

▤ p2p_handshake.py

▤ p2p_headers_sync_with_minchainwork.py

▤ p2p_i2p_ports.py

▤ p2p_i2p_sessions.py

▤ p2p_ibd_stalling.py

▤ p2p_ibd_txrelay.py

▤ p2p_initial_headers_sync.py

▤ p2p_invalid_block.py

▤ p2p_invalid_locator.py

▤ p2p_invalid_messages.py

▤ p2p_invalid_tx.py

▤ p2p_leak_tx.py

▤ p2p_leak.py

▤ p2p_message_capture.py

▤ p2p_mutated_blocks.py

▤ p2p_net_deadlock.py

▤ p2p_nobloomfilter_messages.py

▤ p2p_node_network_limited.py

▤ p2p_opportunistic_1p1c.py

▤ p2p_orphan_handling.py

▤ p2p_outbound_eviction.py

▤ p2p_permissions.py

▤ p2p_ping.py

▤ p2p_private_broadcast_cap.py

▤ p2p_private_broadcast_completion.py

▤ p2p_private_broadcast_retry_v1.py

▤ p2p_private_broadcast.py

▤ p2p_tx_relay_rate_limit.py

▤ p2p_unrequested_blocks.py

▤ p2p_v2_encrypted.py

▤ p2p_v2_misbehaving.py

▤ p2p_v2_transport.py

▤ README.md

▤ rpc_bind.py

▤ rpc_blockchain.py

▤ rpc_createmultisig.py

▤ rpc_decodescript.py

▤ rpc_deprecated.py

▤ rpc_deriveaddresses.py

▤ rpc_dumptxoutset.py

▤ rpc_echo_payload.py

▤ rpc_estimatefee.py

▤ rpc_generate.py

▤ rpc_getblockfilter.py

▤ rpc_getblockfrompeer.py

▤ rpc_getblockstats.py

▤ rpc_getchaintips.py

▤ rpc_getdescriptoractivity.py

▤ rpc_getdescriptorinfo.py

▤ rpc_gettxspendingprevout.py

▤ rpc_help.py

▤ rpc_invalid_address_message.py

▤ rpc_invalidateblock.py

▤ rpc_misc.py

▤ rpc_named_arguments.py

▤ rpc_preciousblock.py

▤ rpc_psbt.py

▤ rpc_rawtransaction.py

▤ rpc_scanblocks.py

▤ rpc_scantxoutset.py

▤ rpc_setban.py

▤ rpc_signer.py

▤ rpc_signmessagewithprivkey.py

▤ rpc_signrawtransactionwithkey.py

▤ rpc_txoutproof.py

▤ rpc_uptime.py

▤ rpc_users.py

▤ rpc_validateaddress.py

▤ rpc_whitelist.py

▤ test_runner.py

▤ test-shell.md

▤ tool_bench_sanity_check.py

▤ tool_bitcoin_chainstate.py

▤ tool_bitcoin.py

▤ tool_rpcauth.py

▤ tool_signet_miner.py

▤ tool_utils.py

▤ tool_utxo_to_sqlite.py

▤ tool_wallet.py

▤ wallet_abandonconflict.py

▤ wallet_address_types.py

▤ wallet_anchor.py

▤ wallet_ancient_migration.py

▤ wallet_assumeutxo.py

▤ wallet_avoid_mixing_output_types.py

▤ wallet_avoidreuse.py

▤ wallet_backup.py

▤ wallet_backwards_compatibility.py

▤ wallet_change_address.py

▤ wallet_coinbase_category.py

▤ wallet_conflicts.py

▤ wallet_create_tx.py

▤ wallet_createwallet.py

▤ wallet_createwalletdescriptor.py

▤ wallet_crosschain.py

▤ wallet_deprecated_rbf.py

▤ wallet_derivehdkey.py

▤ wallet_descriptor.py

▤ wallet_disable.py

▤ wallet_encryption.py

▤ wallet_exported_watchonly.py

▤ wallet_fallbackfee.py

▤ wallet_fast_rescan.py

▤ wallet_fundrawtransaction.py

▤ wallet_gethdkeys.py

▤ wallet_groups.py

▤ wallet_hd.py

▤ wallet_importdescriptors.py

▤ wallet_importprunedfunds.py

▤ wallet_keypool_topup.py

▤ wallet_keypool.py

▤ wallet_labels.py

▤ wallet_listdescriptors.py

▤ wallet_listreceivedby.py

▤ wallet_listsinceblock.py

▤ wallet_listtransactions.py

▤ wallet_migration.py

▤ wallet_miniscript_decaying_multisig_descriptor_psbt.py

▤ wallet_miniscript.py

▤ wallet_multisig_descriptor_psbt.py

▤ wallet_multiwallet.py

▤ wallet_musig.py

▤ wallet_orphanedreward.py

▤ wallet_reindex.py

▤ wallet_reorgsrestore.py

▤ wallet_rescan_unconfirmed.py

▤ wallet_resendwallettransactions.py

▤ wallet_signmessagewithaddress.py

▤ wallet_signrawtransactionwithwallet.py

▤ wallet_simulaterawtx.py

▤ wallet_spend_unconfirmed.py

▤ wallet_startup.py

▤ wallet_taproot.py

▤ wallet_timelock.py

▤ wallet_transactiontime_rescan.py

▤ wallet_txn_clone.py

▤ wallet_txn_doublespend.py

▤ wallet_v3_txs.py

fuzz

lint

sanitizer_suppressions

▤ CMakeLists.txt

▤ config.ini.in

▤ download_utils.py

▤ get_previous_releases.py

▤ CMakeLists.txtGuide

▤ libbitcoinkernel.pc.in

bitcoin / test / functional / p2p_unrequested_blocks.py

Download source ↓

13,590 bytes · SHA-256 ebfa8849d18b025e… · View upstream ↗

251        headers_message.headers.append(CBlockHeader(block_289f))
252        headers_message.headers.append(CBlockHeader(block_290f))
253        headers_message.headers.append(CBlockHeader(block_291))
254        headers_message.headers.append(CBlockHeader(block_292))
255        test_node.send_and_ping(headers_message)
256
257        tip_entry_found = False
258        for x in self.nodes[0].getchaintips():
259            if x['hash'] == block_292.hash_hex:
260                assert_equal(x['status'], "headers-only")
261                tip_entry_found = True
262        assert tip_entry_found
263        assert_raises_rpc_error(-1, "Block not available (not fully downloaded)", self.nodes[0].getblock, block_292.hash_hex)
264
265        test_node.send_without_ping(msg_block(block_289f))
266        test_node.send_and_ping(msg_block(block_290f))
267
268        self.nodes[0].getblock(block_289f.hash_hex)
269        self.nodes[0].getblock(block_290f.hash_hex)
270
271        test_node.send_without_ping(msg_block(block_291))
272
273        # At this point we've sent an obviously-bogus block, wait for full processing
274        # and assume disconnection
275        test_node.wait_for_disconnect()
276
277        self.nodes[0].disconnect_p2ps()
278        test_node = self.nodes[0].add_p2p_connection(P2PInterface())
279
280        # We should have failed reorg and switched back to 290 (but have block 291)
281        assert_equal(self.nodes[0].getblockcount(), 290)
282        assert_equal(self.nodes[0].getbestblockhash(), all_blocks[286].hash_hex)
283        assert_equal(self.nodes[0].getblock(block_291.hash_hex)["confirmations"], -1)
284
285        # Now send a new header on the invalid chain, indicating we're forked off, and expect to get disconnected
286        block_293 = create_block(block_292.hash_int, height=293, ntime=block_292.nTime+1)
287        block_293.solve()
288        headers_message = msg_headers()
289        headers_message.headers.append(CBlockHeader(block_293))
290        test_node.send_without_ping(headers_message)
291        test_node.wait_for_disconnect()
292
293        # 9. Connect node1 to node0 and ensure it is able to sync
294        self.connect_nodes(0, 1)
295        self.sync_blocks([self.nodes[0], self.nodes[1]])
296        self.log.info("Successfully synced nodes 1 and 0")
297
298if __name__ == '__main__':
299    AcceptBlockTest(__file__).main()
300

← Previous 250 lines

A READING COMPANION

Source available. Guide coming next.

This file is included in the stable source snapshot. A file-specific guide has not been published yet.

440 guided files · 2,580 pending. Guides cover key sections, not every line.

cmake/bitcoin-build-config.h.in src/consensus/amount.h src/consensus/consensus.h src/primitives/block.h src/primitives/transaction.h src/crypto/sha256.h src/util/moneystr.h src/clientversion.h src/uint256.h src/script/script.h src/policy/policy.h CMakeLists.txt README.md COPYING src/consensus/tx_check.cpp src/consensus/tx_verify.cpp src/consensus/merkle.cpp src/pow.cpp src/validation.cpp src/script/interpreter.cpp src/script/solver.cpp src/script/sign.cpp src/key_io.cpp src/net.cpp src/net_processing.cpp src/netaddress.cpp src/protocol.h src/wallet/wallet.cpp src/wallet/spend.cpp

Code page 2

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

Independent explanations by MyBitcoinExplorer. Not affiliated with or endorsed by Bitcoin Core. Guides are educational and do not replace the source or its tests.

Bitcoin Core source © its contributors, distributed under the MIT license. Original notices and bundled third-party licenses are retained in the source tree.