1 (note: this is a temporary file, to be added-to by anybody, and moved to
2 release-notes at release time)
4 Bitcoin Core version *version* is now available from:
6 <https://bitcoin.org/bin/bitcoin-core-*version*/>
8 This is a new major version release, including new features, various bugfixes
9 and performance improvements, as well as updated translations.
11 Please report bugs using the issue tracker at GitHub:
13 <https://github.com/bitcoin/bitcoin/issues>
15 To receive security and update notifications, please subscribe to:
17 <https://bitcoincore.org/en/list/announcements/join/>
22 If you are running an older version, shut it down. Wait until it has completely
23 shut down (which might take a few minutes for older versions), then run the
24 installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on Mac)
25 or `bitcoind`/`bitcoin-qt` (on Linux).
27 The first time you run version 0.15.0, your chainstate database will be converted to a
28 new format, which will take anywhere from a few minutes to half an hour,
29 depending on the speed of your machine.
31 Note that the block database format also changed in version 0.8.0 and there is no
32 automatic upgrade code from before version 0.8 to version 0.15.0. Upgrading
33 directly from 0.7.x and earlier without redownloading the blockchain is not supported.
34 However, as usual, old wallet versions are still supported.
39 The chainstate database for this release is not compatible with previous
40 releases, so if you run 0.15 and then decide to switch back to any
41 older version, you will need to run the old release with the `-reindex-chainstate`
42 option to rebuild the chainstate data structures in the old format.
44 If your node has pruning enabled, this will entail re-downloading and
45 processing the entire blockchain.
50 Bitcoin Core is extensively tested on multiple operating systems using
51 the Linux kernel, macOS 10.8+, and Windows Vista and later. Windows XP is not supported.
53 Bitcoin Core should also work on most other Unix-like systems but is not
54 frequently tested on them.
61 The minimum version of GCC required to compile Bitcoin Core is now 4.8. No effort will be
62 made to support older versions of GCC. See discussion in issue #11732 for more information.
66 Due to a backward-incompatible change in the wallet database, wallets created
67 with version 0.16.0 will be rejected by previous versions. Also, version 0.16.0
68 will only create hierarchical deterministic (HD) wallets.
70 Replace-By-Fee by default in GUI
71 --------------------------------
72 The send screen now uses BIP-125 RBF by default, regardless of `-walletrbf`.
73 There is a checkbox to mark the transaction as final.
75 The RPC default remains unchanged: to use RBF, launch with `-walletrbf=1` or
76 use the `replaceable` argument for individual transactions.
78 Custom wallet directories
80 The ability to specify a directory other than the default data directory in which to store
81 wallets has been added. An existing directory can be specified using the `-walletdir=<dir>`
82 argument. Wallets loaded via `-wallet` arguments must be in this wallet directory. Care should be taken
83 when choosing a wallet directory location, as if it becomes unavailable during operation,
86 Default wallet directory change
87 --------------------------
88 On new installations (if the data directory doesn't exist), wallets will now be stored in a
89 new `wallets/` subdirectory inside the data directory. If this `wallets/` subdirectory
90 doesn't exist (i.e. on existing nodes), the current datadir root is used instead, as it was.
93 ----------------------
94 - The deprecated RPC `getinfo` was removed. It is recommended that the more specific RPCs are used:
99 - The wallet RPC `getreceivedbyaddress` will return an error if called with an address not in the wallet.
101 Changed command-line options
102 -----------------------------
103 - `-debuglogfile=<file>` can be used to specify an alternative debug logging file.
105 Renamed script for creating JSON-RPC credentials
106 -----------------------------
107 The `share/rpcuser/rpcuser.py` script was renamed to `share/rpcauth/rpcauth.py`. This script can be
108 used to create `rpcauth` credentials for a JSON-RPC user.
111 - `dumpwallet` now includes hex-encoded scripts from the wallet in the dumpfile, and
112 `importwallet` now imports these scripts, but corresponding addresses may not be added
113 correctly or a manual rescan may be required to find relevant transactions.
118 Thanks to everyone who directly contributed to this release:
121 As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).