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| See https://github.com/bitcoin-core/bitcoin-devwiki/wiki/28.0-Release-Notes-Draft | ||
| Bitcoin Core version 28.0 is now available from: | ||
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| <https://bitcoincore.org/bin/bitcoin-core-28.0/> | ||
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| This release includes new features, various bug fixes and performance | ||
| improvements, as well as updated translations. | ||
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| Please report bugs using the issue tracker at GitHub: | ||
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| <https://github.com/bitcoin/bitcoin/issues> | ||
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| To receive security and update notifications, please subscribe to: | ||
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| <https://bitcoincore.org/en/list/announcements/join/> | ||
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| How to Upgrade | ||
| ============== | ||
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| If you are running an older version, shut it down. Wait until it has completely | ||
| shut down (which might take a few minutes in some cases), then run the | ||
| installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on macOS) | ||
| or `bitcoind`/`bitcoin-qt` (on Linux). | ||
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| Upgrading directly from a version of Bitcoin Core that has reached its EOL is | ||
| possible, but it might take some time if the data directory needs to be migrated. Old | ||
| wallet versions of Bitcoin Core are generally supported. | ||
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| Running bitcoin core binaries on macOS requires self signing. | ||
| ``` | ||
| cd /path/to/bitcoin-core/bin | ||
| xattr -d com.apple.quarantine bitcoin-cli bitcoin-qt bitcoin-tx bitcoin-util bitcoin-wallet bitcoind test_bitcoin | ||
| codesign -s - bitcoin-cli bitcoin-qt bitcoin-tx bitcoin-util bitcoin-wallet bitcoind test_bitcoin | ||
| ``` | ||
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| Compatibility | ||
| ============== | ||
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| Bitcoin Core is supported and extensively tested on operating systems | ||
| using the Linux Kernel 3.17+, macOS 11.0+, and Windows 7 and newer. Bitcoin | ||
| Core should also work on most other Unix-like systems but is not as | ||
| frequently tested on them. It is not recommended to use Bitcoin Core on | ||
| unsupported systems. | ||
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| Notable changes | ||
| =============== | ||
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| Testnet4/BIP94 support | ||
| ----- | ||
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| Support for Testnet4 as specified in [BIP94](https://github.com/bitcoin/bips/blob/master/bip-0094.mediawiki) | ||
| has been added. The network can be selected with the `-testnet4` option and | ||
| the section header is also named `[testnet4]`. | ||
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| While the intention is to phase out support for Testnet3 in an upcoming | ||
| version, support for it is still available via the known options in this | ||
| release. | ||
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| Windows Data Directory | ||
| ---------------------- | ||
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| The default data directory on Windows has been moved from `C:\Users\Username\AppData\Roaming\Bitcoin` | ||
| to `C:\Users\Username\AppData\Local\Bitcoin`. Bitcoin Core will check the existence | ||
| of the old directory first and continue to use that directory for backwards | ||
| compatibility if it is present. (#27064) | ||
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| P2P and network changes | ||
| ----------------------- | ||
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| - Previously if Bitcoin Core was listening for P2P connections, either using | ||
| default settings or via `bind=addr:port` it would always also bind to | ||
| `127.0.0.1:8334` to listen for Tor connections. It was not possible to switch | ||
| this off, even if the node didn't use Tor. This has been changed and now | ||
| `bind=addr:port` results in binding on `addr:port` only. The default behavior | ||
| of binding to `0.0.0.0:8333` and `127.0.0.1:8334` has not been changed. | ||
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| If you are using a `bind=...` configuration without `bind=...=onion` and rely | ||
| on the previous implied behavior to accept incoming Tor connections at | ||
| `127.0.0.1:8334`, you need to now make this explicit by using | ||
| `bind=... bind=127.0.0.1:8334=onion`. (#22729) | ||
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| - Bitcoin Core will now fail to start up if any of its P2P binds fail, rather | ||
| than the previous behaviour where it would only abort startup if all P2P | ||
| binds had failed. (#22729) | ||
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| - UNIX domain sockets can now be used for proxy connections. Set `-onion` or `-proxy` | ||
| to the local socket path with the prefix `unix:` (e.g. `-onion=unix:/home/me/torsocket`). | ||
| (#27375) | ||
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| - unix socket paths are now accepted for `-zmqpubrawblock` and `-zmqpubrawtx` with | ||
| the format `-zmqpubrawtx=unix:/path/to/file` | ||
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| - Additional flags "in" and "out" have been added to `-whitelist` to control whether | ||
| permissions apply to incoming connections and/or manual (default: incoming only). | ||
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| - Transactions that are too low feerate will be opportunistically paired with their child | ||
| transactions and submitted as a package, thus enabling the node to download | ||
| 1-parent-1-child packages using the existing transaction relay protocol. Combined with | ||
| other mempool policies, this allows limited "package relay" when a parent transaction | ||
| is below mempool minimum feerate; TRUC parents are additionally allowed to be below | ||
| minimum relay feerate (i.e. pay 0 fees). Use the `submitpackage` RPC to submit packages | ||
| directly to the node. Warning: this p2p feature is limited (unlike the `submitpackage` | ||
| interface, a child with multiple unconfirmed parents is not supported) and not yet | ||
| reliable under adversarial conditions. (#28970) | ||
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| Mempool Policy Changes | ||
| ---------------------- | ||
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| - Transactions with version number set to 3 are now treated as standard on all networks (#29496), | ||
| subject to Opt-in Topologically Restricted Until Confirmation (TRUC) Transactions policy as | ||
| described in [BIP 431](https://github.com/bitcoin/bips/blob/master/bip-0431.mediawiki). The | ||
| policy includes limits on spending unconfirmed outputs (#28948), eviction of a previous descendant | ||
| if a more incentive-compatible one is submitted (#29306), and a maximum transaction size of 10,000vB | ||
| (#29873). These restrictions simplify the assessment of incentive compatibility of accepting or | ||
| replacing TRUC transactions, thus ensuring any replacements are more profitable for the node and | ||
| making fee-bumping more reliable. | ||
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| - Pay To Anchor (P2A) is a new standard witness output type for spending, | ||
| a newly recognised output template. This allows for key-less anchor | ||
| outputs, with compact spending conditions for additional efficiencies on | ||
| top of an equivalent `sh(OP_TRUE)` output, in addition to the txid stability | ||
| of the spending transaction. | ||
| N.B. propagation of this output spending on the network will be limited | ||
| until a sufficient number of nodes on the network adopt this upgrade. | ||
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| - Limited package RBF is now enabled, where the proposed conflicting package would result in | ||
| a connected component, aka cluster, of size 2 in the mempool. All clusters being conflicted | ||
| against must be of size 2 or lower. | ||
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| - `mempoolfullrbf=1` is now set by default. | ||
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| Updated RPCs | ||
| ------------ | ||
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| - The JSON-RPC server now recognizes JSON-RPC 2.0 requests and responds with | ||
| strict adherence to the [specification](https://www.jsonrpc.org/specification). | ||
| See [JSON-RPC-interface.md](https://github.com/bitcoin/bitcoin/blob/master/doc/JSON-RPC-interface.md#json-rpc-11-vs-20) for details. | ||
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| - The `dumptxoutset` RPC now returns the UTXO set dump in a new and | ||
| improved format. At the same time the `loadtxoutset` RPC now | ||
| expects this new format in dumps it tries to load. Dumps with the | ||
| old format are no longer supported and need to be recreated using | ||
| the new format in order to be usable. | ||
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| - AssumeUTXO mainnet parameters have been added for height 840,000. | ||
| This means the `loadtxoutset` RPC can now be used on mainnet with | ||
| the matching UTXO set from that height. | ||
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| - The `warnings` field in `getblockchaininfo`, `getmininginfo` and | ||
| `getnetworkinfo` now returns all the active node warnings as an array | ||
| of strings, instead of just a single warning. The current behaviour | ||
| can temporarily be restored by running bitcoind with configuration | ||
| option `-deprecatedrpc=warnings`. | ||
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| - Previously when using the `sendrawtransaction` rpc and specifying outputs | ||
| that are already in the UXTO set an RPC error code `-27` with RPC error | ||
| text "Transaction already in block chain" was returned in response. | ||
| The help text has been updated to "Transaction outputs already in utxo set" | ||
| to more accurately describe the source of the issue. | ||
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| - The default mode for the `estimatesmartfee` RPC has been updated from `conservative` to `economical`. | ||
| which is expected to reduce overestimation for many users, particularly if Replace-by-Fee is an option. | ||
| For users that require high confidence in their fee estimates at the cost of potentially overestimating, | ||
| the `conservative` mode remains available. | ||
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| - An item of `unspents`, of `scantxoutset`, has two new fields: `blockhash` | ||
| and `confirmations`. `blockhash` is the hash of the block where the UTXO was | ||
| created. `confirmations` is the number of confirmations of the UTXO. (#30515) | ||
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| - `maxfeerate` and `maxburnamount` arguments are added to submitpackage. | ||
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| Changes to wallet related RPCs can be found in the Wallet section below. | ||
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| New RPCs | ||
| -------- | ||
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| Updated REST APIs | ||
| ----------------- | ||
| - Parameter validation for `/rest/getutxos` has been improved by rejecting | ||
| truncated or overly large txids and malformed outpoint indices by raising an | ||
| HTTP_BAD_REQUEST "Parse error". Previously, these malformed requests would be | ||
| silently handled. (#30482, #30444) | ||
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| Build System | ||
| ------------ | ||
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| - GCC 11.1 or later, or Clang 16.0 or later, | ||
| are now required to compile Bitcoin Core. | ||
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| - The minimum required glibc to run Bitcoin Core is now | ||
| 2.31. This means that RHEL 8 and Ubuntu 18.04 (Bionic) | ||
| are no-longer supported. (#29987) | ||
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| - `--enable-lcov-branch-coverage` has been removed, given | ||
| incompatibilities between lcov version 1 & 2. `LCOV_OPTS` | ||
| should be used to set any options instead. | ||
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| Updated settings | ||
| ---------------- | ||
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| - When running with `-alertnotify`, an alert can now be raised multiple | ||
| times instead of just once. Previously, it was only raised when unknown | ||
| new consensus rules were activated, whereas the scope has now been | ||
| increased to include all kernel warnings. Specifically, alerts will now | ||
| also be raised when an invalid chain with a large amount of work has | ||
| been detected. Additional warnings may be added in the future. | ||
| (#30058) | ||
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| Changes to GUI or wallet related settings can be found in the GUI or Wallet section below. | ||
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| New settings | ||
| ------------ | ||
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| Tools and Utilities | ||
| ------------------- | ||
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| Wallet | ||
| ------ | ||
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| - The wallet now detects when wallet transactions conflict with the mempool. Mempool | ||
| conflicting transactions can be seen in the `"mempoolconflicts"` field of | ||
| `gettransaction`. The inputs of mempool conflicted transactions can now be respent | ||
| without manually abandoning the transactions when the parent transaction is dropped | ||
| from the mempool, which can cause wallet balances to appear higher. | ||
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| - A new `max_tx_weight` option has been added to the RPCs `fundrawtransaction`, `walletcreatefundedpsbt`, and `send`. | ||
| It specifies the maximum transaction weight. If the limit is exceeded during funding, the transaction will not be built. | ||
| The default value is 4,000,000 WU. | ||
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| - A new RPC `createwalletdescriptor` is added which allows users to add new automatically | ||
| generated descriptors to their wallet. This can be used to upgrade wallets created prior to | ||
| the introduction of a new standard descriptor, such as taproot. | ||
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| - A new RPC `gethdkeys` is added which will list all of the BIP 32 HD keys in use by all | ||
| of the descriptors in the wallet. These keys can be used in conjunction with `createwalletdescriptor` | ||
| to create and add single key descriptors to the wallet for a particular key that the wallet | ||
| already knows. | ||
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| - The `sendall` RPC can spend unconfirmed change and will include additional fees as necessary | ||
| for the resulting transaction to bump the unconfirmed transactions' feerates to the specified feerate. | ||
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| - If a `fee_rate` is specified when using the `bumpfee` RPC, the feerate is no longer restricted to | ||
| following the wallet's incremental feerate of 5 sat/vb. The feerate must still be at least the sum | ||
| of the original fee and the mempool's incremental feerate. | ||
|
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| GUI changes | ||
| ----------- | ||
|
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| - The "Migrate Wallet" menu allows users to migrate any legacy wallet in their wallet | ||
| directory, regardless of the wallets loaded. (gui#824) | ||
|
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| - The "Information" window now displays the maximum mempool size along with the | ||
| mempool usage. (gui#825) | ||
|
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| Low-level changes | ||
| ================= | ||
|
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| RPC | ||
| --- | ||
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| Tests | ||
| ----- | ||
|
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| - The BIP94 timewarp attack mitigation is now active on the `regtest` network | ||
|
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| - `-testdatadir` is added to `test_bitcoin` to allow specifying the location for unit test data directories. | ||
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| Blockstorage | ||
| ------------ | ||
|
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| - Block files are now XOR'd by default with a key stored in the blocksdir. | ||
| Previous releases of Bitcoin Core or previous external software will not be able to read the blocksdir with a non-zero XOR-key. | ||
| Refer to the `-blocksxor` help for more details. | ||
|
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| Credits | ||
| ======= | ||
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| Thanks to everyone who directly contributed to this release: | ||
| - 0xb10c | ||
| - Alfonso Roman Zubeldia | ||
| - Andrew Toth | ||
| - AngusP | ||
| - Anthony Towns | ||
| - Antoine Poinsot | ||
| - Anton A | ||
| - Ava Chow | ||
| - Ayush Singh | ||
| - Ben Westgate | ||
| - Brandon Odiwuor | ||
| - brunoerg | ||
| - bstin | ||
| - Charlie | ||
| - Christopher Bergqvist | ||
| - Cory Fields | ||
| - crazeteam | ||
| - Daniela Brozzoni | ||
| - David Gumberg | ||
| - dergoegge | ||
| - Edil Medeiros | ||
| - Epic Curious | ||
| - Fabian Jahr | ||
| - fanquake | ||
| - furszy | ||
| - glozow | ||
| - Greg Sanders | ||
| - hanmz | ||
| - Hennadii Stepanov | ||
| - Hernan Marino | ||
| - Hodlinator | ||
| - ishaanam | ||
| - ismaelsadeeq | ||
| - Jadi | ||
| - Jon Atack | ||
| - josibake | ||
| - jrakibi | ||
| - kevkevin | ||
| - kevkevinpal | ||
| - Konstantin Akimov | ||
| - laanwj | ||
| - Larry Ruane | ||
| - Lőrinc | ||
| - Luis Schwab | ||
| - Luke Dashjr | ||
| - MarcoFalke | ||
| - marcofleon | ||
| - Marnix | ||
| - Martin Saposnic | ||
| - Martin Zumsande | ||
| - Matt Corallo | ||
| - Matthew Zipkin | ||
| - Matt Whitlock | ||
| - Max Edwards | ||
| - Michael Dietz | ||
| - Murch | ||
| - nanlour | ||
| - pablomartin4btc | ||
| - Peter Todd | ||
| - Pieter Wuille | ||
| - @RandyMcMillan | ||
| - RoboSchmied | ||
| - Roman Zeyde | ||
| - Ryan Ofsky | ||
| - Sebastian Falbesoner | ||
| - Sergi Delgado Segura | ||
| - Sjors Provoost | ||
| - spicyzboss | ||
| - StevenMia | ||
| - stickies-v | ||
| - stratospher | ||
| - Suhas Daftuar | ||
| - sunerok | ||
| - tdb3 | ||
| - TheCharlatan | ||
| - umiumi | ||
| - Vasil Dimov | ||
| - virtu | ||
| - willcl-ark | ||
|
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| As well as to everyone that helped with translations on | ||
| [Transifex](https://www.transifex.com/bitcoin/bitcoin/). |