diff --git a/doc/release-notes/release-notes-0.9.0.md b/doc/release-notes/release-notes-0.9.0.md new file mode 100644 index 000000000..170410ca4 --- /dev/null +++ b/doc/release-notes/release-notes-0.9.0.md @@ -0,0 +1,411 @@ +Bitcoin Core version 0.9.0 is now available from: + + https://bitcoin.org/bin/0.9.0/ + +This is a new major version release, bringing both new features and +bug fixes. + +Please report bugs using the issue tracker at github: + + https://github.com/bitcoin/bitcoin/issues + +How to Upgrade +-------------- + +If you are running an older version, shut it down. Wait until it has completely +shut down (which might take a few minutes for older versions), uninstall all +earlier versions of Bitcoin, then run the installer (on Windows) or just copy +over /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux). + +If you are upgrading from version 0.7.2 or earlier, the first time you run +0.9.0 your blockchain files will be re-indexed, which will take anywhere from +30 minutes to several hours, depending on the speed of your machine. + +On Windows, do not forget to uninstall all earlier versions of the Bitcoin +client first, especially if you are switching to the 64-bit version. + +Windows 64-bit installer +------------------------- + +New in 0.9.0 is the Windows 64-bit version of the client. There have been +frequent reports of users running out of virtual memory on 32-bit systems +during the initial sync. Because of this it is recommended to install the +64-bit version if your system supports it. + +NOTE: Release candidate 2 Windows binaries are not code-signed; use PGP +and the SHA256SUMS.asc file to make sure your binaries are correct. +In the final 0.9.0 release, Windows setup.exe binaries will be code-signed. + +OSX 10.5 / 32-bit no longer supported +------------------------------------- + +0.9.0 drops support for older Macs. The minimum requirements are now: +* A 64-bit-capable CPU (see http://support.apple.com/kb/ht3696); +* Mac OS 10.6 or later (see https://support.apple.com/kb/ht1633). + +Downgrading warnings +-------------------- + +The 'chainstate' for this release is not always compatible with previous +releases, so if you run 0.9 and then decide to switch back to a +0.8.x release you might get a blockchain validation error when starting the +old release (due to 'pruned outputs' being omitted from the index of +unspent transaction outputs). + +Running the old release with the -reindex option will rebuild the chainstate +data structures and correct the problem. + +Also, the first time you run a 0.8.x release on a 0.9 wallet it will rescan +the blockchain for missing spent coins, which will take a long time (tens +of minutes on a typical machine). + +Rebranding to Bitcoin Core +--------------------------- + +To reduce confusion between Bitcoin-the-network and Bitcoin-the-software we +have renamed the reference client to Bitcoin Core. + + +OP_RETURN and data in the block chain +------------------------------------- +On OP_RETURN: There was been some confusion and misunderstanding in +the community, regarding the OP_RETURN feature in 0.9 and data in the +blockchain. This change is not an endorsement of storing data in the +blockchain. The OP_RETURN change creates a provably-prunable output, +to avoid data storage schemes -- some of which were already deployed -- +that were storing arbitrary data such as images as forever-unspendable +TX outputs, bloating bitcoin's UTXO database. + +Storing arbitrary data in the blockchain is still a bad idea; it is less +costly and far more efficient to store non-currency data elsewhere. + +Autotools build system +----------------------- + +For 0.9.0 we switched to an autotools-based build system instead of individual +(q)makefiles. + +Using the standard "./autogen.sh; ./configure; make" to build Bitcoin-Qt and +bitcoind makes it easier for experienced open source developers to contribute +to the project. + +Be sure to check doc/build-*.md for your platform before building from source. + +Bitcoin-cli +------------- + +Another change in the 0.9 release is moving away from the bitcoind executable +functioning both as a server and as a RPC client. The RPC client functionality +("tell the running bitcoin daemon to do THIS") was split into a separate +executable, 'bitcoin-cli'. The RPC client code will eventually be removed from +bitcoind, but will be kept for backwards compatibility for a release or two. + +`walletpassphrase` RPC +----------------------- + +The behavior of the `walletpassphrase` RPC when the wallet is already unlocked +has changed between 0.8 and 0.9. + +The 0.8 behavior of `walletpassphrase` is to fail when the wallet is already unlocked: + + > walletpassphrase 1000 + walletunlocktime = now + 1000 + > walletpassphrase 10 + Error: Wallet is already unlocked (old unlock time stays) + +The new behavior of `walletpassphrase` is to set a new unlock time overriding +the old one: + + > walletpassphrase 1000 + walletunlocktime = now + 1000 + > walletpassphrase 10 + walletunlocktime = now + 10 (overriding the old unlock time) + +Transaction malleability-related fixes +-------------------------------------- + +This release contains a few fixes for transaction ID (TXID) malleability +issues: + +- -nospendzeroconfchange command-line option, to avoid spending + zero-confirmation change +- IsStandard() transaction rules tightened to prevent relaying and mining of + mutated transactions +- Additional information in listtransactions/gettransaction output to + report wallet transactions that conflict with each other because + they spend the same outputs. +- Bug fixes to the getbalance/listaccounts RPC commands, which would report + incorrect balances for double-spent (or mutated) transactions. +- New option: -zapwallettxes to rebuild the wallet's transaction information + +Transaction Fees +---------------- + +This release drops the default fee required to relay transactions across the +network and for miners to consider the transaction in their blocks to +0.01mBTC per kilobyte. + +Note that getting a transaction relayed across the network does NOT guarantee +that the transaction will be accepted by a miner; by default, miners fill +their blocks with 50 kilobytes of high-priority transactions, and then with +700 kilobytes of the highest-fee-per-kilobyte transactions. + +The minimum relay/mining fee-per-kilobyte may be changed with the +minrelaytxfee option. Note that previous releases incorrectly used +the mintxfee setting to determine which low-priority transactions should +be considered for inclusion in blocks. + +The wallet code still uses a default fee for low-priority transactions of +0.1mBTC per kilobyte. During periods of heavy transaction volume, even this +fee may not be enough to get transactions confirmed quickly; the mintxfee +option may be used to override the default. + +0.9.0 Release notes +======================= + +RPC: + +- New notion of 'conflicted' transactions, reported as confirmations: -1 +- 'listreceivedbyaddress' now provides tx ids +- Add raw transaction hex to 'gettransaction' output +- Updated help and tests for 'getreceivedby(account|address)' +- In 'getblock', accept 2nd 'verbose' parameter, similar to getrawtransaction, + but defaulting to 1 for backward compatibility +- Add 'verifychain', to verify chain database at runtime +- Add 'dumpwallet' and 'importwallet' RPCs +- 'keypoolrefill' gains optional size parameter +- Add 'getbestblockhash', to return tip of best chain +- Add 'chainwork' (the total work done by all blocks since the genesis block) + to 'getblock' output +- Make RPC password resistant to timing attacks +- Clarify help messages and add examples +- Add 'getrawchangeaddress' call for raw transaction change destinations +- Reject insanely high fees by default in 'sendrawtransaction' +- Add RPC call 'decodescript' to decode a hex-encoded transaction script +- Make 'validateaddress' provide redeemScript +- Add 'getnetworkhashps' to get the calculated network hashrate +- New RPC 'ping' command to request ping, new 'pingtime' and 'pingwait' fields + in 'getpeerinfo' output +- Adding new 'addrlocal' field to 'getpeerinfo' output +- Add verbose boolean to 'getrawmempool' +- Add rpc command 'getunconfirmedbalance' to obtain total unconfirmed balance +- Explicitly ensure that wallet is unlocked in `importprivkey` +- Add check for valid keys in `importprivkey` + +Command-line options: + +- New option: -nospendzeroconfchange to never spend unconfirmed change outputs +- New option: -zapwallettxes to rebuild the wallet's transaction information +- Rename option '-tor' to '-onion' to better reflect what it does +- Add '-disablewallet' mode to let bitcoind run entirely without wallet (when + built with wallet) +- Update default '-rpcsslciphers' to include TLSv1.2 +- make '-logtimestamps' default on and rework help-message +- RPC client option: '-rpcwait', to wait for server start +- Remove '-logtodebugger' +- Allow `-noserver` with bitcoind + +Block-chain handling and storage: + +- Update leveldb to 1.15 +- Check for correct genesis (prevent cases where a datadir from the wrong + network is accidentally loaded) +- Allow txindex to be removed and add a reindex dialog +- Log aborted block database rebuilds +- Store orphan blocks in serialized form, to save memory +- Limit the number of orphan blocks in memory to 750 +- Fix non-standard disconnected transactions causing mempool orphans +- Add a new checkpoint at block 279,000 + +Wallet: + +- Bug fixes and new regression tests to correctly compute + the balance of wallets containing double-spent (or mutated) transactions +- Store key creation time. Calculate whole-wallet birthday. +- Optimize rescan to skip blocks prior to birthday +- Let user select wallet file with -wallet=foo.dat +- Consider generated coins mature at 101 instead of 120 blocks +- Improve wallet load time +- Don't count txins for priority to encourage sweeping +- Don't create empty transactions when reading a corrupted wallet +- Fix rescan to start from beginning after importprivkey +- Only create signatures with low S values + +Mining: + +- Increase default -blockmaxsize/prioritysize to 750K/50K +- 'getblocktemplate' does not require a key to create a block template +- Mining code fee policy now matches relay fee policy + +Protocol and network: + +- Drop the fee required to relay a transaction to 0.01mBTC per kilobyte +- Send tx relay flag with version +- New 'reject' P2P message (BIP 0061, see + https://gist.github.com/gavinandresen/7079034 for draft) +- Dump addresses every 15 minutes instead of 10 seconds +- Relay OP_RETURN data TxOut as standard transaction type +- Remove CENT-output free transaction rule when relaying +- Lower maximum size for free transaction creation +- Send multiple inv messages if mempool.size > MAX_INV_SZ +- Split MIN_PROTO_VERSION into INIT_PROTO_VERSION and MIN_PEER_PROTO_VERSION +- Do not treat fFromMe transaction differently when broadcasting +- Process received messages one at a time without sleeping between messages +- Improve logging of failed connections +- Bump protocol version to 70002 +- Add some additional logging to give extra network insight +- Added new DNS seed from bitcoinstats.com + +Validation: + +- Log reason for non-standard transaction rejection +- Prune provably-unspendable outputs, and adapt consistency check for it. +- Detect any sufficiently long fork and add a warning +- Call the -alertnotify script when we see a long or invalid fork +- Fix multi-block reorg transaction resurrection +- Reject non-canonically-encoded serialization sizes +- Reject dust amounts during validation +- Accept nLockTime transactions that finalize in the next block + +Build system: + +- Switch to autotools-based build system +- Build without wallet by passing `--disable-wallet` to configure, this + removes the BerkeleyDB dependency +- Upgrade gitian dependencies (libpng, libz, libupnpc, boost, openssl) to more + recent versions +- Windows 64-bit build support +- Solaris compatibility fixes +- Check integrity of gitian input source tarballs +- Enable full GCC Stack-smashing protection for all OSes + +GUI: + +- Switch to Qt 5.2.0 for Windows build +- Add payment request (BIP 0070) support +- Improve options dialog +- Show transaction fee in new send confirmation dialog +- Add total balance in overview page +- Allow user to choose data directory on first start, when data directory is + missing, or when the -choosedatadir option is passed +- Save and restore window positions +- Add vout index to transaction id in transactions details dialog +- Add network traffic graph in debug window +- Add open URI dialog +- Add Coin Control Features +- Improve receive coins workflow: make the 'Receive' tab into a form to request + payments, and move historical address list functionality to File menu. +- Rebrand to `Bitcoin Core` +- Move initialization/shutdown to a thread. This prevents "Not responding" + messages during startup. Also show a window during shutdown. +- Don't regenerate autostart link on every client startup +- Show and store message of normal bitcoin:URI +- Fix richtext detection hang issue on very old Qt versions +- OS X: Make use of the 10.8+ user notification center to display Growl-like + notifications +- OS X: Added NSHighResolutionCapable flag to Info.plist for better font + rendering on Retina displays. +- OS X: Fix bitcoin-qt startup crash when clicking dock icon +- Linux: Fix Gnome bitcoin: URI handler + +Miscellaneous: + +- Add Linux script (contrib/qos/tc.sh) to limit outgoing bandwidth +- Add '-regtest' mode, similar to testnet but private with instant block + generation with 'setgenerate' RPC. +- Add 'linearize.py' script to contrib, for creating bootstrap.dat +- Add separate bitcoin-cli client + +Credits +-------- + +Thanks to everyone who contributed to this release: + +- Andrey +- Ashley Holman +- b6393ce9-d324-4fe1-996b-acf82dbc3d53 +- bitsofproof +- Brandon Dahler +- Calvin Tam +- Christian Decker +- Christian von Roques +- Christopher Latham +- Chuck +- coblee +- constantined +- Cory Fields +- Cozz Lovan +- daniel +- Daniel Larimer +- David Hill +- Dmitry Smirnov +- Drak +- Eric Lombrozo +- fanquake +- fcicq +- Florin +- frewil +- Gavin Andresen +- Gregory Maxwell +- gubatron +- Guillermo Céspedes Tabárez +- Haakon Nilsen +- HaltingState +- Han Lin Yap +- harry +- Ian Kelling +- Jeff Garzik +- Johnathan Corgan +- Jonas Schnelli +- Josh Lehan +- Josh Triplett +- Julian Langschaedel +- Kangmo +- Lake Denman +- Luke Dashjr +- Mark Friedenbach +- Matt Corallo +- Michael Bauer +- Michael Ford +- Michagogo +- Midnight Magic +- Mike Hearn +- Nils Schneider +- Noel Tiernan +- Olivier Langlois +- patrick s +- Patrick Strateman +- paveljanik +- Peter Todd +- phantomcircuit +- phelixbtc +- Philip Kaufmann +- Pieter Wuille +- Rav3nPL +- R E Broadley +- regergregregerrge +- Robert Backhaus +- Roman Mindalev +- Rune K. Svendsen +- Ryan Niebur +- Scott Ellis +- Scott Willeke +- Sergey Kazenyuk +- Shawn Wilkinson +- Sined +- sje +- Subo1978 +- super3 +- Tamas Blummer +- theuni +- Thomas Holenstein +- Timon Rapp +- Timothy Stranex +- Tom Geller +- Torstein Husebø +- Vaclav Vobornik +- vhf / victor felder +- Vinnie Falco +- Warren Togami +- Wil Bown +- Wladimir J. van der Laan