diff options
| -rw-r--r-- | doc/release-notes/release-notes-0.13.1.md | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/doc/release-notes/release-notes-0.13.1.md b/doc/release-notes/release-notes-0.13.1.md new file mode 100644 index 0000000000..75c2d61be8 --- /dev/null +++ b/doc/release-notes/release-notes-0.13.1.md @@ -0,0 +1,410 @@ +Bitcoin Core version 0.13.1 is now available from: + + <https://bitcoin.org/bin/bitcoin-core-0.13.1/> + +This is a new minor version release, including activation parameters for the +segwit softfork, various bugfixes and performance improvements, as well as +updated translations. + +Please report bugs using the issue tracker at github: + + <https://github.com/bitcoin/bitcoin/issues> + +To receive security and update notifications, please subscribe to: + + <https://bitcoincore.org/en/list/announcements/join/> + +Compatibility +============== + +Microsoft ended support for Windows XP on [April 8th, 2014](https://www.microsoft.com/en-us/WindowsForBusiness/end-of-xp-support), +an OS initially released in 2001. This means that not even critical security +updates will be released anymore. Without security updates, using a bitcoin +wallet on a XP machine is irresponsible at least. + +In addition to that, with 0.12.x there have been varied reports of Bitcoin Core +randomly crashing on Windows XP. It is [not clear](https://github.com/bitcoin/bitcoin/issues/7681#issuecomment-217439891) +what the source of these crashes is, but it is likely that upstream +libraries such as Qt are no longer being tested on XP. + +We do not have time nor resources to provide support for an OS that is +end-of-life. From 0.13.0 on, Windows XP is no longer supported. Users are +suggested to upgrade to a newer version of Windows, or install an alternative OS +that is supported. + +No attempt is made to prevent installing or running the software on Windows XP, +you can still do so at your own risk, but do not expect it to work: do not +report issues about Windows XP to the issue tracker. + +From 0.13.1 onwards OS X 10.7 is no longer supported. 0.13.0 was intended to work on 10.7+, +but severe issues with the libc++ version on 10.7.x keep it from running reliably. +0.13.1 now requires 10.8+, and will communicate that to 10.7 users, rather than crashing unexpectedly. + +Notable changes +=============== + +Segregated witness soft fork +---------------------------- + +Segregated witness (segwit) is a soft fork that, if activated, will +allow transaction-producing software to separate (segregate) transaction +signatures (witnesses) from the part of the data in a transaction that is +covered by the txid. This provides several immediate benefits: + +- **Elimination of unwanted transaction malleability:** Segregating the witness + allows both existing and upgraded software to calculate the transaction + identifier (txid) of transactions without referencing the witness, which can + sometimes be changed by third-parties (such as miners) or by co-signers in a + multisig spend. This solves all known cases of unwanted transaction + malleability, which is a problem that makes programming Bitcoin wallet + software more difficult and which seriously complicates the design of smart + contracts for Bitcoin. + +- **Capacity increase:** Segwit transactions contain new fields that are not + part of the data currently used to calculate the size of a block, which + allows a block containing segwit transactions to hold more data than allowed + by the current maximum block size. Estimates based on the transactions + currently found in blocks indicate that if all wallets switch to using + segwit, the network will be able to support about 70% more transactions. The + network will also be able to support more of the advanced-style payments + (such as multisig) than it can support now because of the different weighting + given to different parts of a transaction after segwit activates (see the + following section for details). + +- **Weighting data based on how it affects node performance:** Some parts of + each Bitcoin block need to be stored by nodes in order to validate future + blocks; other parts of a block can be immediately forgotten (pruned) or used + only for helping other nodes sync their copy of the block chain. One large + part of the immediately prunable data are transaction signatures (witnesses), + and segwit makes it possible to give a different "weight" to segregated + witnesses to correspond with the lower demands they place on node resources. + Specifically, each byte of a segregated witness is given a weight of 1, each + other byte in a block is given a weight of 4, and the maximum allowed weight + of a block is 4 million. Weighting the data this way better aligns the most + profitable strategy for creating blocks with the long-term costs of block + validation. + +- **Signature covers value:** A simple improvement in the way signatures are + generated in segwit simplifies the design of secure signature generators + (such as hardware wallets), reduces the amount of data the signature + generator needs to download, and allows the signature generator to operate + more quickly. This is made possible by having the generator sign the amount + of bitcoins they think they are spending, and by having full nodes refuse to + accept those signatures unless the amount of bitcoins being spent is exactly + the same as was signed. For non-segwit transactions, wallets instead had to + download the complete previous transactions being spent for every payment + they made, which could be a slow operation on hardware wallets and in other + situations where bandwidth or computation speed was constrained. + +- **Linear scaling of sighash operations:** In 2015 a block was produced that + required about 25 seconds to validate on modern hardware because of the way + transaction signature hashes are performed. Other similar blocks, or blocks + that could take even longer to validate, can still be produced today. The + problem that caused this can't be fixed in a soft fork without unwanted + side-effects, but transactions that opt-in to using segwit will now use a + different signature method that doesn't suffer from this problem and doesn't + have any unwanted side-effects. + +- **Increased security for multisig:** Bitcoin addresses (both P2PKH addresses + that start with a '1' and P2SH addresses that start with a '3') use a hash + function known as RIPEMD-160. For P2PKH addresses, this provides about 160 + bits of security---which is beyond what cryptographers believe can be broken + today. But because P2SH is more flexible, only about 80 bits of security is + provided per address. Although 80 bits is very strong security, it is within + the realm of possibility that it can be broken by a powerful adversary. + Segwit allows advanced transactions to use the SHA256 hash function instead, + which provides about 128 bits of security (that is 281 trillion times as + much security as 80 bits and is equivalent to the maximum bits of security + believed to be provided by Bitcoin's choice of parameters for its Elliptic + Curve Digital Security Algorithm [ECDSA].) + +- **More efficient almost-full-node security** Satoshi Nakamoto's original + Bitcoin paper describes a method for allowing newly-started full nodes to + skip downloading and validating some data from historic blocks that are + protected by large amounts of proof of work. Unfortunately, Nakamoto's + method can't guarantee that a newly-started node using this method will + produce an accurate copy of Bitcoin's current ledger (called the UTXO set), + making the node vulnerable to falling out of consensus with other nodes. + Although the problems with Nakamoto's method can't be fixed in a soft fork, + Segwit accomplishes something similar to his original proposal: it makes it + possible for a node to optionally skip downloading some blockchain data + (specifically, the segregated witnesses) while still ensuring that the node + can build an accurate copy of the UTXO set for the block chain with the most + proof of work. Segwit enables this capability at the consensus layer, but + note that Bitcoin Core does not provide an option to use this capability as + of this 0.13.1 release. + +- **Script versioning:** Segwit makes it easy for future soft forks to allow + Bitcoin users to individually opt-in to almost any change in the Bitcoin + Script language when those users receive new transactions. Features + currently being researched by Bitcoin Core contributors that may use this + capability include support for Schnorr signatures, which can improve the + privacy and efficiency of multisig transactions (or transactions with + multiple inputs), and Merklized Abstract Syntax Trees (MAST), which can + improve the privacy and efficiency of scripts with two or more conditions. + Other Bitcoin community members are studying several other improvements + that can be made using script versioning. + +Activation for the segwit soft fork is being managed using BIP9 +versionbits. Segwit's version bit is bit 1, and nodes will begin +tracking which blocks signal support for segwit at the beginning of the +first retarget period after segwit's start date of 15 November 2016. If +95% of blocks within a 2,016-block retarget period (about two weeks) +signal support for segwit, the soft fork will be locked in. After +another 2,016 blocks, segwit will activate. + +For more information about segwit, please see the [segwit FAQ][], the +[segwit wallet developers guide][] or BIPs [141][BIP141], [143][BIP143], +[144][BIP144], and [145][BIP145]. If you're a miner or mining pool +operator, please see the [versionbits FAQ][] for information about +signaling support for a soft fork. + +[Segwit FAQ]: https://bitcoincore.org/en/2016/01/26/segwit-benefits/ +[segwit wallet developers guide]: https://bitcoincore.org/en/segwit_wallet_dev/ +[BIP141]: https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki +[BIP143]: https://github.com/bitcoin/bips/blob/master/bip-0143.mediawiki +[BIP144]: https://github.com/bitcoin/bips/blob/master/bip-0144.mediawiki +[BIP145]: https://github.com/bitcoin/bips/blob/master/bip-0145.mediawiki +[versionbits FAQ]: https://bitcoincore.org/en/2016/06/08/version-bits-miners-faq/ + + +Null dummy soft fork +------------------- + +Combined with the segwit soft fork is an additional change that turns a +long-existing network relay policy into a consensus rule. The +`OP_CHECKMULTISIG` and `OP_CHECKMULTISIGVERIFY` opcodes consume an extra +stack element ("dummy element") after signature validation. The dummy +element is not inspected in any manner, and could be replaced by any +value without invalidating the script. + +Because any value can be used for this dummy element, it's possible for +a third-party to insert data into other people's transactions, changing +the transaction's txid (called transaction malleability) and possibly +causing other problems. + +Since Bitcoin Core 0.10.0, nodes have defaulted to only relaying and +mining transactions whose dummy element was a null value (0x00, also +called OP_0). The null dummy soft fork turns this relay rule into a +consensus rule both for non-segwit transactions and segwit transactions, +so that this method of mutating transactions is permanently eliminated +from the network. + +Signaling for the null dummy soft fork is done by signaling support +for segwit, and the null dummy soft fork will activate at the same time +as segwit. + +For more information, please see [BIP147][]. + +[BIP147]: https://github.com/bitcoin/bips/blob/master/bip-0147.mediawiki + +Low-level RPC changes +--------------------- + +- `importprunedfunds` only accepts two required arguments. Some versions accept + an optional third arg, which was always ignored. Make sure to never pass more + than two arguments. + + +Linux ARM builds +---------------- + +With the 0.13.0 release, pre-built Linux ARM binaries were added to the set of +uploaded executables. Additional detail on the ARM architecture targeted by each +is provided below. + +The following extra files can be found in the download directory or torrent: + +- `bitcoin-${VERSION}-arm-linux-gnueabihf.tar.gz`: Linux binaries targeting + the 32-bit ARMv7-A architecture. +- `bitcoin-${VERSION}-aarch64-linux-gnu.tar.gz`: Linux binaries targeting + the 64-bit ARMv8-A architecture. + +ARM builds are still experimental. If you have problems on a certain device or +Linux distribution combination please report them on the bug tracker, it may be +possible to resolve them. Note that the device you use must be (backward) +compatible with the architecture targeted by the binary that you use. +For example, a Raspberry Pi 2 Model B or Raspberry Pi 3 Model B (in its 32-bit +execution state) device, can run the 32-bit ARMv7-A targeted binary. However, +no model of Raspberry Pi 1 device can run either binary because they are all +ARMv6 architecture devices that are not compatible with ARMv7-A or ARMv8-A. + +Note that Android is not considered ARM Linux in this context. The executables +are not expected to work out of the box on Android. + + +0.13.1 Change log +================= + +Detailed release notes follow. This overview includes changes that affect +behavior, not code moves, refactors and string updates. For convenience in locating +the code changes and accompanying discussion, both the pull request and +git merge commit are mentioned. + +### Consensus +- #8636 `9dfa0c8` Implement NULLDUMMY softfork (BIP147) (jl2012) +- #8848 `7a34a46` Add NULLDUMMY verify flag in bitcoinconsensus.h (jl2012) +- #8937 `8b66659` Define start and end time for segwit deployment (sipa) + +### RPC and other APIs +- #8581 `526d2b0` Drop misleading option in importprunedfunds (MarcoFalke) +- #8699 `a5ec248` Remove createwitnessaddress RPC command (jl2012) +- #8780 `794b007` Deprecate getinfo (MarcoFalke) +- #8832 `83ad563` Throw JSONRPCError when utxo set can not be read (MarcoFalke) +- #8884 `b987348` getblockchaininfo help: pruneheight is the lowest, not highest, block (luke-jr) +- #8858 `3f508ed` rpc: Generate auth cookie in hex instead of base64 (laanwj) +- #8951 `7c2bf4b` RPC/Mining: getblocktemplate: Update and fix formatting of help (luke-jr) + +### Block and transaction handling +- #8611 `a9429ca` Reduce default number of blocks to check at startup (sipa) +- #8634 `3e80ab7` Add policy: null signature for failed CHECK(MULTI)SIG (jl2012) +- #8525 `1672225` Do not store witness txn in rejection cache (sipa) +- #8499 `9777fe1` Add several policy limits and disable uncompressed keys for segwit scripts (jl2012) +- #8526 `0027672` Make non-minimal OP_IF/NOTIF argument non-standard for P2WSH (jl2012) +- #8524 `b8c79a0` Precompute sighashes (sipa) +- #8651 `b8c79a0` Predeclare PrecomputedTransactionData as struct (sipa) + +### P2P protocol and network code +- #8740 `42ea51a` No longer send local address in addrMe (laanwj) +- #8427 `69d1cd2` Ignore `notfound` P2P messages (laanwj) +- #8573 `4f84082` Set jonasschnellis dns-seeder filter flag (jonasschnelli) +- #8712 `23feab1` Remove maxuploadtargets recommended minimum (jonasschnelli) +- #8862 `7ae6242` Fix a few cases where messages were sent after requested disconnect (theuni) +- #8393 `fe1975a` Support for compact blocks together with segwit (sipa) +- #8282 `2611ad7` Feeler connections to increase online addrs in the tried table (EthanHeilman) +- #8612 `2215c22` Check for compatibility with download in FindNextBlocksToDownload (sipa) +- #8606 `bbf379b` Fix some locks (sipa) +- #8594 `ab295bb` Do not add random inbound peers to addrman (gmaxwell) +- #8940 `5b4192b` Add x9 service bit support to dnsseed.bluematt.me, seed.bitcoinstats.com (TheBlueMatt, cdecker) +- #8944 `685e4c7` Remove bogus assert on number of oubound connections. (TheBlueMatt) +- #8949 `0dbc48a` Be more agressive in getting connections to peers with relevant services (gmaxwell) + +### Build system +- #8293 `fa5b249` Allow building libbitcoinconsensus without any univalue (luke-jr) +- #8492 `8b0bdd3` Allow building bench_bitcoin by itself (luke-jr) +- #8563 `147003c` Add configure check for -latomic (ajtowns) +- #8626 `ea51b0f` Berkeley DB v6 compatibility fix (netsafe) +- #8520 `75f2065` Remove check for `openssl/ec.h` (laanwj) + +### GUI +- #8481 `d9f0d4e` Fix minimize and close bugs (adlawren) +- #8487 `a37cec5` Persist the datadir after option reset (achow101) +- #8697 `41fd852` Fix op order to append first alert (rodasmith) +- #8678 `8e03382` Fix UI bug that could result in paying unexpected fee (jonasschnelli) +- #8911 `7634d8e` Translate all files, even if wallet disabled (laanwj) +- #8540 `1db3352` Fix random segfault when closing "Choose data directory" dialog (laanwj) +- #7579 `f1c0d78` Show network/chain errors in the GUI (jonasschnelli) + +### Wallet +- #8443 `464dedd` Trivial cleanup of HD wallet changes (jonasschnelli) +- #8539 `cb07f19` CDB: fix debug output (crowning-) +- #8664 `091cdeb` Fix segwit-related wallet bug (sdaftuar) +- #8693 `c6a6291` Add witness address to address book (instagibbs) +- #8765 `6288659` Remove "unused" ThreadFlushWalletDB from removeprunedfunds (jonasschnelli) + +### Tests and QA +- #8713 `ae8c7df` create_cache: Delete temp dir when done (MarcoFalke) +- #8716 `e34374e` Check legacy wallet as well (MarcoFalke) +- #8750 `d6ebe13` Refactor RPCTestHandler to prevent TimeoutExpired (MarcoFalke) +- #8652 `63462c2` remove root test directory for RPC tests (yurizhykin) +- #8724 `da94272` walletbackup: Sync blocks inside the loop (MarcoFalke) +- #8400 `bea02dc` enable rpcbind_test (yurizhykin) +- #8417 `f70be14` Add walletdump RPC test (including HD- & encryption-tests) (jonasschnelli) +- #8419 `a7aa3cc` Enable size accounting in mining unit tests (sdaftuar) +- #8442 `8bb1efd` Rework hd wallet dump test (MarcoFalke) +- #8528 `3606b6b` Update p2p-segwit.py to reflect correct behavior (instagibbs) +- #8531 `a27cdd8` abandonconflict: Use assert_equal (MarcoFalke) +- #8667 `6b07362` Fix SIGHASH_SINGLE bug in test_framework SignatureHash (jl2012) +- #8673 `03b0196` Fix obvious assignment/equality error in test (JeremyRubin) +- #8739 `cef633c` Fix broken sendcmpct test in p2p-compactblocks.py (sdaftuar) +- #8418 `ff893aa` Add tests for compact blocks (sdaftuar) +- #8803 `375437c` Ping regularly in p2p-segwit.py to keep connection alive (jl2012) +- #8827 `9bbe66e` Split up slow RPC calls to avoid pruning test timeouts (sdaftuar) +- #8829 `2a8bca4` Add bitcoin-tx JSON tests (jnewbery) +- #8834 `1dd1783` blockstore: Switch to dumb dbm (MarcoFalke) +- #8835 `d87227d` nulldummy.py: Don't run unused code (MarcoFalke) +- #8836 `eb18cc1` bitcoin-util-test.py should fail if the output file is empty (jnewbery) +- #8839 `31ab2f8` Avoid ConnectionResetErrors during RPC tests (laanwj) +- #8840 `cbc3fe5` Explicitly set encoding to utf8 when opening text files (laanwj) +- #8841 `3e4abb5` Fix nulldummy test (jl2012) +- #8854 `624a007` Fix race condition in p2p-compactblocks test (sdaftuar) +- #8857 `1f60d45` mininode: Only allow named args in wait_until (MarcoFalke) +- #8860 `0bee740` util: Move wait_bitcoinds() into stop_nodes() (MarcoFalke) +- #8882 `b73f065` Fix race conditions in p2p-compactblocks.py and sendheaders.py (sdaftuar) +- #8904 `cc6f551` Fix compact block shortids for a test case (dagurval) + +### Documentation +- #8754 `0e2c6bd` Target protobuf 2.6 in OS X build notes. (fanquake) +- #8461 `b17a3f9` Document return value of networkhashps for getmininginfo RPC endpoint (jlopp) +- #8512 `156e305` Corrected JSON typo on setban of net.cpp (sevastos) +- #8683 `8a7d7ff` Fix incorrect file name bitcoin.qrc (bitcoinsSG) +- #8891 `5e0dd9e` Update bips.md for Segregated Witness (fanquake) +- #8545 `863ae74` Update git-subtree-check.sh README (MarcoFalke) +- #8607 `486650a` Fix doxygen off-by-one comments, fix typos (MarcoFalke) +- #8560 `c493f43` Fix two VarInt examples in serialize.h (cbarcenas) +- #8737 `084cae9` UndoReadFromDisk works on undo files (rev), not on block files (paveljanik) +- #8625 `0a35573` Clarify statement about parallel jobs in rpc-tests.py (isle2983) +- #8624 `0e6d753` build: Mention curl (MarcoFalke) +- #8604 `b09e13c` build,doc: Update for 0.13.0+ and OpenBSD 5.9 (laanwj) +- #8939 `06d15fb` Update implemented bips for 0.13.1 (sipa) + +### Miscellaneous +- #8742 `d31ac72` Specify Protobuf version 2 in paymentrequest.proto (fanquake) +- #8414,#8558,#8676,#8700,#8701,#8702 Add missing copyright headers (isle2983, kazcw) +- #8899 `4ed2627` Fix wake from sleep issue with Boost 1.59.0 (fanquake) +- #8817 `bcf3806` update bitcoin-tx to output witness data (jnewbery) +- #8513 `4e5fc31` Fix a type error that would not compile on OSX. (JeremyRubin) +- #8392 `30eac2d` Fix several node initialization issues (sipa) +- #8548 `305d8ac` Use `__func__` to get function name for output printing (MarcoFalke) +- #8291 `a987431` [util] CopyrightHolders: Check for untranslated substitution (MarcoFalke) + +Credits +======= + +Thanks to everyone who directly contributed to this release: + +- adlawren +- Alexey Vesnin +- Anders Øyvind Urke-Sætre +- Andrew Chow +- Anthony Towns +- BtcDrak +- Chris Stewart +- Christian Barcenas +- Christian Decker +- Cory Fields +- crowning- +- Dagur Valberg Johannsson +- David A. Harding +- Eric Lombrozo +- Ethan Heilman +- fanquake +- Gaurav Rana +- Gregory Maxwell +- instagibbs +- isle2983 +- Jameson Lopp +- Jeremy Rubin +- jnewbery +- Johnson Lau +- Jonas Schnelli +- jonnynewbs +- Justin Camarena +- Kaz Wesley +- leijurv +- Luke Dashjr +- MarcoFalke +- Marty Jones +- Matt Corallo +- Micha +- Michael Ford +- mruddy +- Pavel Janík +- Pieter Wuille +- rodasmith +- Sev +- Suhas Daftuar +- whythat +- Wladimir J. van der Laan + +As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/). |