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372 lines
14 KiB
372 lines
14 KiB
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
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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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==============
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If you are running an older version, shut it down. Wait until it has completely
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shut down (which might take a few minutes in some cases), then run the
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installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on macOS)
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or `bitcoind`/`bitcoin-qt` (on Linux).
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Upgrading directly from a version of Bitcoin Core that has reached its EOL is
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possible, but it might take some time if the data directory needs to be migrated. Old
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wallet versions of Bitcoin Core are generally supported.
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Running Bitcoin Core binaries on macOS requires self signing.
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```
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cd /path/to/bitcoin-28.0/bin
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xattr -d com.apple.quarantine bitcoin-cli bitcoin-qt bitcoin-tx bitcoin-util bitcoin-wallet bitcoind test_bitcoin
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codesign -s - bitcoin-cli bitcoin-qt bitcoin-tx bitcoin-util bitcoin-wallet bitcoind test_bitcoin
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```
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Compatibility
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==============
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Bitcoin Core is supported and extensively tested on operating systems
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using the Linux Kernel 3.17+, macOS 11.0+, and Windows 7 and newer. Bitcoin
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Core should also work on most other UNIX-like systems but is not as
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frequently tested on them. It is not recommended to use Bitcoin Core on
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unsupported systems.
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Notable changes
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===============
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Testnet4/BIP94 support
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-----
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Support for Testnet4 as specified in [BIP94](https://github.com/bitcoin/bips/blob/master/bip-0094.mediawiki)
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has been added. The network can be selected with the `-testnet4` option and
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the section header is also named `[testnet4]`.
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While the intention is to phase out support for Testnet3 in an upcoming
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version, support for it is still available via the known options in this
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release. (#29775)
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Windows Data Directory
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----------------------
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The default data directory on Windows has been moved from `C:\Users\Username\AppData\Roaming\Bitcoin`
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to `C:\Users\Username\AppData\Local\Bitcoin`. Bitcoin Core will check the existence
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of the old directory first and continue to use that directory for backwards
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compatibility if it is present. (#27064)
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JSON-RPC 2.0 Support
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--------------------
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The JSON-RPC server now recognizes JSON-RPC 2.0 requests and responds with
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strict adherence to the [specification](https://www.jsonrpc.org/specification).
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See [JSON-RPC-interface.md](https://github.com/bitcoin/bitcoin/blob/master/doc/JSON-RPC-interface.md#json-rpc-11-vs-20) for details. (#27101)
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JSON-RPC clients may need to be updated to be compatible with the JSON-RPC server.
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Please open an issue on GitHub if any compatibility issues are found.
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libbitcoinconsensus Removal
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---------------------------
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The libbitcoin-consensus library was deprecated in 27.0 and is now completely removed. (#29648)
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P2P and Network Changes
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-----------------------
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- Previously if Bitcoin Core was listening for P2P connections, either using
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default settings or via `bind=addr:port` it would always also bind to
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`127.0.0.1:8334` to listen for Tor connections. It was not possible to switch
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this off, even if the node didn't use Tor. This has been changed and now
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`bind=addr:port` results in binding on `addr:port` only. The default behavior
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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
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on the previous implied behavior to accept incoming Tor connections at
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`127.0.0.1:8334`, you need to now make this explicit by using
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`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
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than the previous behaviour where it would only abort startup if all P2P
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binds had failed. (#22729)
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- UNIX domain sockets can now be used for proxy connections. Set `-onion` or `-proxy`
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to the local socket path with the prefix `unix:` (e.g. `-onion=unix:/home/me/torsocket`).
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(#27375)
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- UNIX socket paths are now accepted for `-zmqpubrawblock` and `-zmqpubrawtx` with
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the format `-zmqpubrawtx=unix:/path/to/file` (#27679)
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- Additional "in" and "out" flags have been added to `-whitelist` to control whether
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permissions apply to inbound connections and/or manual ones (default: inbound only). (#27114)
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- Transactions having a feerate that is too low will be opportunistically paired with
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their child transactions and submitted as a package, thus enabling the node to download
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1-parent-1-child packages using the existing transaction relay protocol. Combined with
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other mempool policies, this change allows limited "package relay" when a parent transaction
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is below the mempool minimum feerate. Topologically Restricted Until Confirmation (TRUC)
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parents are additionally allowed to be below the minimum relay feerate (i.e., pay 0 fees).
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Use the `submitpackage` RPC to submit packages directly to the node. Warning: this P2P
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feature is limited (unlike the `submitpackage` interface, a child with multiple unconfirmed
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parents is not supported) and not yet reliable under adversarial conditions. (#28970)
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Mempool Policy Changes
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----------------------
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- Transactions with version number set to 3 are now treated as standard on all networks (#29496),
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subject to opt-in Topologically Restricted Until Confirmation (TRUC) transaction policy as
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described in [BIP 431](https://github.com/bitcoin/bips/blob/master/bip-0431.mediawiki). The
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policy includes limits on spending unconfirmed outputs (#28948), eviction of a previous descendant
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if a more incentive-compatible one is submitted (#29306), and a maximum transaction size of 10,000vB
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(#29873). These restrictions simplify the assessment of incentive compatibility of accepting or
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replacing TRUC transactions, thus ensuring any replacements are more profitable for the node and
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making fee-bumping more reliable.
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- Pay To Anchor (P2A) is a new standard witness output type for spending,
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a newly recognised output template. This allows for key-less anchor
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outputs, with compact spending conditions for additional efficiencies on
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top of an equivalent `sh(OP_TRUE)` output, in addition to the txid stability
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of the spending transaction.
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N.B. propagation of this output spending on the network will be limited
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until a sufficient number of nodes on the network adopt this upgrade. (#30352)
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- Limited package RBF is now enabled, where the proposed conflicting package would result in
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a connected component, aka cluster, of size 2 in the mempool. All clusters being conflicted
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against must be of size 2 or lower. (#28984)
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- The default value of the `-mempoolfullrbf` configuration option has been changed from 0 to 1,
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i.e. `mempoolfullrbf=1`. (#30493)
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Updated RPCs
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------------
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- The `dumptxoutset` RPC now returns the UTXO set dump in a new and
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improved format. Correspondingly, the `loadtxoutset` RPC now expects
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this new format in the dumps it tries to load. Dumps with the old
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format are no longer supported and need to be recreated using the
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new format to be usable. (#29612)
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- AssumeUTXO mainnet parameters have been added for height 840,000.
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This means the `loadtxoutset` RPC can now be used on mainnet with
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the matching UTXO set from that height. (#28553)
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- The `warnings` field in `getblockchaininfo`, `getmininginfo` and
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`getnetworkinfo` now returns all the active node warnings as an array
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of strings, instead of a single warning. The current behaviour
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can be temporarily restored by running Bitcoin Core with the configuration
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option `-deprecatedrpc=warnings`. (#29845)
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- Previously when using the `sendrawtransaction` RPC and specifying outputs
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that are already in the UTXO set, an RPC error code of `-27` with the
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message "Transaction already in block chain" was returned in response.
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The error message has been changed to "Transaction outputs already in utxo set"
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to more accurately describe the source of the issue. (#30212)
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- The default mode for the `estimatesmartfee` RPC has been updated from `conservative` to `economical`,
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which is expected to reduce over-estimation for many users, particularly if Replace-by-Fee is an option.
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For users that require high confidence in their fee estimates at the cost of potentially over-estimating,
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the `conservative` mode remains available. (#30275)
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- RPC `scantxoutset` now returns 2 new fields in the "unspents" JSON array: `blockhash` and `confirmations`.
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See the scantxoutset help for details. (#30515)
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- RPC `submitpackage` now allows 2 new arguments to be passed: `maxfeerate` and `maxburnamount`. See the
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subtmitpackage help for details. (#28950)
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Changes to wallet-related RPCs can be found in the Wallet section below.
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Updated REST APIs
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-----------------
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- Parameter validation for `/rest/getutxos` has been improved by rejecting
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truncated or overly large txids and malformed outpoint indices via raising
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an HTTP_BAD_REQUEST "Parse error". These requests were previously handled
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silently. (#30482, #30444)
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Build System
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------------
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- GCC 11.1 or later, or Clang 16.0 or later,
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are now required to compile Bitcoin Core. (#29091, #30263)
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- The minimum required glibc to run Bitcoin Core is now
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2.31. This means that RHEL 8 and Ubuntu 18.04 (Bionic)
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are no-longer supported. (#29987)
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- `--enable-lcov-branch-coverage` has been removed, given
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incompatibilities between lcov version 1 & 2. `LCOV_OPTS`
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should be used to set any options instead. (#30192)
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Updated Settings
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----------------
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- When running with `-alertnotify`, an alert can now be raised multiple
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times instead of just once. Previously, it was only raised when unknown
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new consensus rules were activated. Its scope has now been increased to
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include all kernel warnings. Specifically, alerts will now also be raised
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when an invalid chain with a large amount of work has been detected.
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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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Wallet
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------
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- The wallet now detects when wallet transactions conflict with the mempool. Mempool-conflicting
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transactions can be seen in the `"mempoolconflicts"` field of `gettransaction`. The inputs
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of mempool-conflicted transactions can now be respent without manually abandoning the
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transactions when the parent transaction is dropped from the mempool, which can cause wallet
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balances to appear higher. (#27307)
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- A new `max_tx_weight` option has been added to the RPCs `fundrawtransaction`, `walletcreatefundedpsbt`, and `send`.
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It specifies the maximum transaction weight. If the limit is exceeded during funding, the transaction will not be built.
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The default value is 4,000,000 WU. (#29523)
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- A new `createwalletdescriptor` RPC allows users to add new automatically generated
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descriptors to their wallet. This can be used to upgrade wallets created prior to the
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introduction of a new standard descriptor, such as taproot. (#29130)
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- A new RPC `gethdkeys` lists all of the BIP32 HD keys in use by all of the descriptors in the wallet.
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These keys can be used in conjunction with `createwalletdescriptor` to create and add single key
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descriptors to the wallet for a particular key that the wallet already knows. (#29130)
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- The `sendall` RPC can now spend unconfirmed change and will include additional fees as necessary
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for the resulting transaction to bump the unconfirmed transactions' feerates to the specified feerate. (#28979)
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- In RPC `bumpfee`, if a `fee_rate` is specified, the feerate is no longer restricted
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to following the wallet's incremental feerate of 5 sat/vb. The feerate must still be
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at least the sum of the original fee and the mempool's incremental feerate. (#27969)
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GUI Changes
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-----------
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- The "Migrate Wallet" menu allows users to migrate any legacy wallet in their wallet
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directory, regardless of the wallets loaded. (gui#824)
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- The "Information" window now displays the maximum mempool size along with the
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mempool usage. (gui#825)
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Low-level Changes
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=================
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Tests
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-----
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- The BIP94 timewarp attack mitigation is now active on the `regtest` network. (#30681)
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- A new `-testdatadir` option has been added to `test_bitcoin` to allow specifying the
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location of unit test data directories. (#26564)
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Blockstorage
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------------
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- Block files are now XOR'd by default with a key stored in the blocksdir.
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Previous releases of Bitcoin Core or previous external software will not be able to read the blocksdir with a non-zero XOR-key.
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Refer to the `-blocksxor` help for more details. (#28052)
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Chainstate
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----------
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- The chainstate database flushes that occur when blocks are pruned will no longer
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empty the database cache. The cache will remain populated longer, which significantly
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reduces the time for initial block download to complete. (#28280)
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Dependencies
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------------
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- The dependency on Boost.Process has been replaced with cpp-subprocess, which is contained in source.
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Builders will no longer need Boost.Process to build with external signer support. (#28981)
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Credits
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=======
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Thanks to everyone who directly contributed to this release:
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- 0xb10c
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- Alfonso Roman Zubeldia
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- Andrew Toth
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- AngusP
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- Anthony Towns
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- Antoine Poinsot
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- Anton A
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- Ava Chow
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- Ayush Singh
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- Ben Westgate
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- Brandon Odiwuor
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- brunoerg
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- bstin
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- Charlie
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- Christopher Bergqvist
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- Cory Fields
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- crazeteam
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- Daniela Brozzoni
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- David Gumberg
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- dergoegge
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- Edil Medeiros
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- Epic Curious
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- Fabian Jahr
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- fanquake
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- furszy
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- glozow
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- Greg Sanders
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- hanmz
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- Hennadii Stepanov
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- Hernan Marino
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- Hodlinator
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- ishaanam
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- ismaelsadeeq
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- Jadi
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- Jon Atack
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- josibake
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- jrakibi
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- kevkevin
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- kevkevinpal
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- Konstantin Akimov
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- laanwj
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- Larry Ruane
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- Lőrinc
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- Luis Schwab
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- Luke Dashjr
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- MarcoFalke
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- marcofleon
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- Marnix
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- Martin Saposnic
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- Martin Zumsande
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- Matt Corallo
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- Matthew Zipkin
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- Matt Whitlock
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- Max Edwards
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- Michael Dietz
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- Murch
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- nanlour
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- pablomartin4btc
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- Peter Todd
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- Pieter Wuille
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- @RandyMcMillan
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- RoboSchmied
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- Roman Zeyde
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- Ryan Ofsky
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- Sebastian Falbesoner
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- Sergi Delgado Segura
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- Sjors Provoost
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- spicyzboss
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- StevenMia
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- stickies-v
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- stratospher
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- Suhas Daftuar
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- sunerok
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- tdb3
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- TheCharlatan
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- umiumi
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- Vasil Dimov
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- virtu
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- willcl-ark
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As well as to everyone that helped with translations on
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[Transifex](https://www.transifex.com/bitcoin/bitcoin/).
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