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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.

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1Bitcoin Core version 0.10.3 is now available from:
2
3  <https://bitcoin.org/bin/bitcoin-core-0.10.3/>
4
5This is a new minor version release, bringing security fixes and translation 
6updates. It is recommended to upgrade to this version as soon as possible.
7
8Please report bugs using the issue tracker at github:
9
10  <https://github.com/bitcoin/bitcoin/issues>
11
12Upgrading and downgrading
13=========================
14
15How to Upgrade
16--------------
17
18If you are running an older version, shut it down. Wait until it has completely
19shut down (which might take a few minutes for older versions), then run the
20installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or
21bitcoind/bitcoin-qt (on Linux).
22
23Downgrade warning
24------------------
25
26Because release 0.10.0 and later makes use of headers-first synchronization and
27parallel block download (see further), the block files and databases are not
28backwards-compatible with pre-0.10 versions of Bitcoin Core or other software:
29
30* Blocks will be stored on disk out of order (in the order they are
31received, really), which makes it incompatible with some tools or
32other programs. Reindexing using earlier versions will also not work
33anymore as a result of this.
34
35* The block index database will now hold headers for which no block is
36stored on disk, which earlier versions won't support.
37
38If you want to be able to downgrade smoothly, make a backup of your entire data
39directory. Without this your node will need start syncing (or importing from
40bootstrap.dat) anew afterwards. It is possible that the data from a completely
41synchronised 0.10 node may be usable in older versions as-is, but this is not
42supported and may break as soon as the older version attempts to reindex.
43
44This does not affect wallet forward or backward compatibility.
45
46Notable changes
47===============
48
49Fix buffer overflow in bundled upnp
50------------------------------------
51
52Bundled miniupnpc was updated to 1.9.20151008. This fixes a buffer overflow in
53the XML parser during initial network discovery.
54
55Details can be found here: http://talosintel.com/reports/TALOS-2015-0035/
56
57This applies to the distributed executables only, not when building from source or
58using distribution provided packages.
59
60Additionally, upnp has been disabled by default. This may result in a lower
61number of reachable nodes on IPv4, however this prevents future libupnpc
62vulnerabilities from being a structural risk to the network
63(see https://github.com/bitcoin/bitcoin/pull/6795).
64
65Test for LowS signatures before relaying
66-----------------------------------------
67
68Make the node require the canonical 'low-s' encoding for ECDSA signatures when
69relaying or mining.  This removes a nuisance malleability vector.
70
71Consensus behavior is unchanged.
72
73If widely deployed this change would eliminate the last remaining known vector
74for nuisance malleability on SIGHASH_ALL P2PKH transactions. On the down-side
75it will block most transactions made by sufficiently out of date software.
76
77Unlike the other avenues to change txids on transactions this
78one was randomly violated by all deployed bitcoin software prior to
79its discovery. So, while other malleability vectors where made
80non-standard as soon as they were discovered, this one has remained
81permitted. Even BIP62 did not propose applying this rule to
82old version transactions, but conforming implementations have become
83much more common since BIP62 was initially written.
84
85Bitcoin Core has produced compatible signatures since a28fb70e in
86September 2013, but this didn't make it into a release until 0.9
87in March 2014; Bitcoinj has done so for a similar span of time.
88Bitcoinjs and electrum have been more recently updated.
89
90This does not replace the need for BIP62 or similar, as miners can
91still cooperate to break transactions.  Nor does it replace the
92need for wallet software to handle malleability sanely[1]. This
93only eliminates the cheap and irritating DOS attack.
94
95[1] On the Malleability of Bitcoin Transactions
96Marcin Andrychowicz, Stefan Dziembowski, Daniel Malinowski, Łukasz Mazurek
97http://fc15.ifca.ai/preproceedings/bitcoin/paper_9.pdf
98
99Minimum relay fee default increase
100-----------------------------------
101
102The default for the `-minrelaytxfee` setting has been increased from `0.00001`
103to `0.00005`.
104
105This is necessitated by the current transaction flooding, causing
106outrageous memory usage on nodes due to the mempool ballooning. This is a
107temporary measure, bridging the time until a dynamic method for determining
108this fee is merged (which will be in 0.12).
109
110(see https://github.com/bitcoin/bitcoin/pull/6793, as well as the 0.11.0
111release notes, in which this value was suggested)
112
1130.10.3 Change log
114=================
115
116Detailed release notes follow. This overview includes changes that affect external
117behavior, not code moves, refactors or string updates.
118
119- #6186 `e4a7d51` Fix two problems in CSubnet parsing
120- #6153 `ebd7d8d` Parameter interaction: disable upnp if -proxy set
121- #6203 `ecc96f5` Remove P2SH coinbase flag, no longer interesting
122- #6226 `181771b` json: fail read_string if string contains trailing garbage
123- #6244 `09334e0` configure: Detect (and reject) LibreSSL
124- #6276 `0fd8464` Fix getbalance * 0
125- #6274 `be64204` Add option `-alerts` to opt out of alert system
126- #6319 `3f55638` doc: update mailing list address
127- #6438 `7e66e9c` openssl: avoid config file load/race
128- #6439 `255eced` Updated URL location of netinstall for Debian
129- #6412 `0739e6e` Test whether created sockets are select()able
130- #6694 `f696ea1` [QT] fix thin space word wrap line brake issue
131- #6704 `743cc9e` Backport bugfixes to 0.10
132- #6769 `1cea6b0` Test LowS in standardness, removes nuisance malleability vector.
133- #6789 `093d7b5` Update miniupnpc to 1.9.20151008
134- #6795 `f2778e0` net: Disable upnp by default
135- #6797 `91ef4d9` Do not store more than 200 timedata samples
136- #6793 `842c48d` Bump minrelaytxfee default
137
138Credits
139=======
140
141Thanks to everyone who directly contributed to this release:
142
143- Adam Weiss
144- Alex Morcos
145- Casey Rodarmor
146- Cory Fields
147- fanquake
148- Gregory Maxwell
149- Jonas Schnelli
150- J Ross Nicoll
151- Luke Dashjr
152- Pavel Vasin
153- Pieter Wuille
154- randy-waterhouse
155- ฿tcDrak
156- Tom Harding
157- Veres Lajos
158- Wladimir J. van der Laan
159
160And all those who contributed additional code review and/or security research:
161
162- timothy on IRC for reporting the issue
163- Vulnerability in miniupnp discovered by Aleksandar Nikolic of Cisco Talos
164
165As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).
166

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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