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 server340 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

▤ release-notes-0.10.0.md

▤ release-notes-0.10.1.md

▤ release-notes-0.10.2.md

▤ release-notes-0.10.3.md

▤ release-notes-0.10.4.md

▤ release-notes-0.11.0.md

▤ release-notes-0.11.1.md

▤ release-notes-0.11.2.md

▤ release-notes-0.12.0.md

▤ release-notes-0.12.1.md

▤ release-notes-0.13.0.md

▤ release-notes-0.13.1.md

▤ release-notes-0.13.2.md

▤ release-notes-0.14.0.md

▤ release-notes-0.14.1.md

▤ release-notes-0.14.2.md

▤ release-notes-0.14.3.md

▤ release-notes-0.15.0.1.md

▤ release-notes-0.15.0.md

▤ release-notes-0.15.1.md

▤ release-notes-0.15.2.md

▤ release-notes-0.16.0.md

▤ release-notes-0.16.1.md

▤ release-notes-0.16.2.md

▤ release-notes-0.16.3.md

▤ release-notes-0.17.0.1.md

▤ release-notes-0.17.0.md

▤ release-notes-0.17.1.md

▤ release-notes-0.18.0.md

▤ release-notes-0.18.1.md

▤ release-notes-0.19.0.1.md

▤ release-notes-0.19.0.md

▤ release-notes-0.19.1.md

▤ release-notes-0.20.0.md

▤ release-notes-0.20.1.md

▤ release-notes-0.20.2.md

▤ release-notes-0.21.0.md

▤ release-notes-0.21.1.md

▤ release-notes-0.21.2.md

▤ release-notes-0.3.12.md

▤ release-notes-0.3.13.md

▤ release-notes-0.3.14.md

▤ release-notes-0.3.15.md

▤ release-notes-0.3.16.md

▤ release-notes-0.3.17.md

▤ release-notes-0.3.18.md

▤ release-notes-0.3.19.md

▤ release-notes-0.3.20.1.md

▤ release-notes-0.3.20.2.md

▤ release-notes-0.3.20.md

▤ release-notes-0.3.21.md

▤ release-notes-0.3.22.md

▤ release-notes-0.3.23.md

▤ release-notes-0.3.24.md

▤ release-notes-0.4.0.md

▤ release-notes-0.4.1.md

▤ release-notes-0.4.2.md

▤ release-notes-0.4.3.md

▤ release-notes-0.4.4.md

▤ release-notes-0.4.5.md

▤ release-notes-0.4.6.md

▤ release-notes-0.5.0.md

▤ release-notes-0.5.1.md

▤ release-notes-0.5.2.md

▤ release-notes-0.5.3.md

▤ release-notes-0.5.4.md

▤ release-notes-0.5.5.md

▤ release-notes-0.6.0.md

▤ release-notes-0.6.1.md

▤ release-notes-0.6.2.md

▤ release-notes-0.6.3.md

▤ release-notes-0.7.0.md

▤ release-notes-0.7.1.md

▤ release-notes-0.7.2.md

▤ release-notes-0.8.0.md

▤ release-notes-0.8.1.md

▤ release-notes-0.8.2.md

▤ release-notes-0.8.3.md

▤ release-notes-0.8.4.md

▤ release-notes-0.8.5.md

▤ release-notes-0.8.6.md

▤ release-notes-0.9.0.md

▤ release-notes-0.9.1.md

▤ release-notes-0.9.2.1.md

▤ release-notes-0.9.2.md

▤ release-notes-0.9.3.md

▤ release-notes-0.9.4.md

▤ release-notes-0.9.5.md

▤ release-notes-22.0.md

▤ release-notes-22.1.md

▤ release-notes-23.0.md

▤ release-notes-23.1.md

▤ release-notes-23.2.md

▤ release-notes-24.0.1.md

▤ release-notes-24.0.md

▤ release-notes-24.1.md

▤ release-notes-24.2.md

▤ release-notes-25.0.md

▤ release-notes-25.1.md

▤ release-notes-25.2.md

▤ release-notes-26.0.md

▤ release-notes-26.1.md

▤ release-notes-26.2.md

▤ release-notes-27.0.md

▤ release-notes-27.1.md

▤ release-notes-27.2.md

▤ release-notes-28.0.md

▤ release-notes-28.1.md

▤ release-notes-28.2.md

▤ release-notes-28.3.md

▤ release-notes-28.4.md

▤ release-notes-29.0.md

▤ release-notes-29.1.md

▤ release-notes-29.2.md

▤ release-notes-29.3.md

▤ release-notes-29.4.md

▤ release-notes-30.0.md

▤ release-notes-30.1.md

▤ release-notes-30.2.md

▤ release-notes-30.3.md

▤ release-notes-31.0.md

▤ release-notes-31.1.md

▤ AI_POLICY.md

▤ asmap-data.md

▤ assets-attribution.md

▤ assumeutxo.md

▤ benchmarking.md

▤ bips.md

▤ bitcoin_logo_doxygen.png

▤ build-windows-msvc.md

▤ JSON-RPC-interface.md

▤ managing-wallets.md

▤ multiprocess.md

▤ multisig-tutorial.md

▤ offline-signing-tutorial.md

▤ translation_process.md

▤ translation_strings_policy.md

▤ CMakeLists.txtGuide

▤ libbitcoinkernel.pc.in

bitcoin / doc / release-notes / release-notes-0.8.4.md

Download source ↓

2,644 bytes · SHA-256 23d3c72ee284d902… · View upstream ↗

1Bitcoin-Qt version 0.8.4 is now available from:
2  http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.8.4/
3
4This is a maintenance release to fix a critical bug and three
5security issues; we urge all users to upgrade.
6
7Please report bugs using the issue tracker at github:
8  https://github.com/bitcoin/bitcoin/issues
9
10
11How to Upgrade
12--------------
13
14If you are running an older version, shut it down. Wait
15until it has completely shut down (which might take a few minutes for older
16versions), then run the installer (on Windows) or just copy over
17/Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).
18
19If you are upgrading from version 0.7.2 or earlier, the first time you
20run 0.8.4 your blockchain files will be re-indexed, which will take
21anywhere from 30 minutes to several hours, depending on the speed of
22your machine.
23
240.8.4 Release notes
25===================
26
27Security issues
28---------------
29
30An attacker could send a series of messages that resulted in
31an integer division-by-zero error in the Bloom Filter handling
32code, causing the Bitcoin-Qt or bitcoind process to crash.
33Bloom filters were introduced with version 0.8, so versions 0.8.0
34through 0.8.3 are vulnerable to this critical denial-of-service attack.
35
36A constant-time algorithm is now used to check RPC password
37guess attempts; fixes https://github.com/bitcoin/bitcoin/issues/2838
38(CVE-2013-4165)
39
40Implement a better fix for the fill-memory-with-orphan-transactions
41attack that was fixed in 0.8.3. See
42https://bitslog.wordpress.com/2013/07/18/buggy-cve-2013-4627-patch-open-new-vectors-of-attack/
43for a description of the weaknesses of the previous fix.
44(CVE-2013-4627)
45
46Bugs fixed
47----------
48
49Fix multi-block reorg transaction resurrection.
50
51Fix non-standard disconnected transactions causing mempool orphans.
52This bug could cause nodes running with the -debug flag to crash.
53
54OSX: use 'FD_FULLSYNC' with LevelDB, which will (hopefully!)
55prevent the database corruption issues many people have
56experienced on OSX.
57
58Linux: clicking on bitcoin: links was broken if you were using
59a Gnome-based desktop.
60
61Fix a hang-at-shutdown bug that only affects users that compile
62their own version of Bitcoin against Boost versions 1.50-1.52.
63
64Other changes
65-------------
66
67Checkpoint at block 250,000 to speed up initial block downloads
68and make the progress indicator when downloading more accurate.
69
70
71Thanks to everybody who contributed to the 0.8.4 releases!
72----------------------------------------------------------
73
74Pieter Wuille
75Warren Togami
76Patrick Strateman
77pakt
78Gregory Maxwell
79Sergio Demian Lerner
80grayleonard
81Cory Fields
82Matt Corallo
83Gavin Andresen
84

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.

340 guided files · 2,680 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 1

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

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.