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*After branching off for a major version release of Bitcoin Core, use this
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template to create the initial release notes draft.*
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*The release notes draft is a temporary file that can be added to by anyone. See
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[/doc/developer-notes.md#release-notes](/doc/developer-notes.md#release-notes)
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for the process.*
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*Create the draft, named* "*version* Release Notes Draft"
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*(e.g. "0.20.0 Release Notes Draft"), as a collaborative wiki in:*
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https://github.com/bitcoin-core/bitcoin-devwiki/wiki/
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*Before the final release, move the notes back to this git repository.*
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*version* Release Notes Draft
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===============================
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Bitcoin Core version *version* is now available from:
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<https://bitcoincore.org/bin/bitcoin-core-*version*/>
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This is a new major version release, including new features, various bugfixes
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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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==============
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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 for older versions), then run the
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installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on Mac)
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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 might take some time if the datadir needs to be migrated. Old
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wallet versions of Bitcoin Core are generally supported.
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Downgrading warning
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-------------------
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The chainstate database for this release is not compatible with previous
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releases, so if you run 0.15 and then decide to switch back to any
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older version, you will need to run the old release with the `-reindex-chainstate`
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option to rebuild the chainstate data structures in the old format.
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If your node has pruning enabled, this will entail re-downloading and
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processing the entire blockchain.
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Compatibility
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==============
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Bitcoin Core is supported and extensively tested on operating systems using
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the Linux kernel, macOS 10.10+, and Windows 7 and newer. It is not recommended
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to use Bitcoin Core on unsupported systems.
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Bitcoin Core should also work on most other Unix-like systems but is not
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frequently tested on them.
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From 0.17.0 onwards, macOS <10.10 is no longer supported. 0.17.0 is
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built using Qt 5.9.x, which doesn't support versions of macOS older than
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10.10. Additionally, Bitcoin Core does not yet change appearance when
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macOS "dark mode" is activated.
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In addition to previously-supported CPU platforms, this release's
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pre-compiled distribution also provides binaries for the RISC-V
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platform.
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Notable changes
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===============
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New RPCs
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--------
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- `getbalances` returns an object with all balances (`mine`,
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`untrusted_pending` and `immature`). Please refer to the RPC help of
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`getbalances` for details. The new RPC is intended to replace
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`getunconfirmedbalance` and the balance fields in `getwalletinfo`, as well as
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`getbalance`. The old calls may be removed in a future version.
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Updated RPCs
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------------
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Note: some low-level RPC changes mainly useful for testing are described in the
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Low-level Changes section below.
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* The `sendmany` RPC had an argument `minconf` that was not well specified and
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would lead to RPC errors even when the wallet's coin selection would succeed.
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The `sendtoaddress` RPC never had this check, so to normalize the behavior,
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`minconf` is now ignored in `sendmany`. If the coin selection does not
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succeed due to missing coins, it will still throw an RPC error. Be reminded
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that coin selection is influenced by the `-spendzeroconfchange`,
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`-limitancestorcount`, `-limitdescendantcount` and `-walletrejectlongchains`
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command line arguments.
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Low-level changes
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=================
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Configuration
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------------
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* An error is issued where previously a warning was issued when a setting in
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the config file was specified in the default section, but not overridden for
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the selected network. This change takes only effect if the selected network
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is not mainnet.
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Wallet
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------
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- When in pruned mode, a rescan that was triggered by an `importwallet`,
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`importpubkey`, `importaddress`, or `importprivkey` RPC will only fail when
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blocks have been pruned. Previously it would fail when `-prune` has been set.
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This change allows to set `-prune` to a high value (e.g. the disk size) and
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the calls to any of the import RPCs would fail when the first block is
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pruned.
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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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As well as everyone that helped translating on [Transifex](https://www.transifex.com/bitcoin/bitcoin/).
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