0.20.7

Bitcoin ABC version 0.20.7 is now available from:

https://download.bitcoinabc.org/0.20.7/

This release includes the following features and fixes:

• The new RPC scantxoutset can be used to scan the UTXO set for entries
  that match certain output descriptors. Refer to the output descriptors
  reference documentation for more details. This call
  is similar to listunspent but does not use a wallet, meaning that the
  wallet can be disabled at compile or run time. This call is experimental,
  as such, is subject to changes or removal in future releases.
• The new RPC getzmqnotifications returns information about active ZMQ
  notifications.

0.20.6

Bitcoin ABC version 0.20.6 is now available from:

https://download.bitcoinabc.org/0.20.6/

This release includes the following features and fixes:

• hdmasterkeyid in getwalletinfo has been deprecated in favor of
  hdseedid. hdmasterkeyid will be removed in V0.21.
• hdmasterkeyid in getaddressinfo has been deprecated in favor of
  hdseedid. hdmasterkeyid will be removed in V0.21.
• The inactivehdmaster property in the dumpwallet output has been
  deprecated in favor of inactivehdseed. inactivehdmaster will be removed
  in V0.21.
• Building from source now requires python 3.5 or greater

'label' and 'account' APIs for wallet

A new 'label' API has been introduced for the wallet. This is intended as a
replacement for the deprecated 'account' API. The 'account' can continue to
be used in v0.20 by starting bitcoind with the '-deprecatedrpc=accounts'
argument, and will be fully removed in v0.21.

The label RPC methods mirror the account functionality, with the following functional differences:

• Labels can be set on any address, not just receiving addresses. This functionality was previously only available through the GUI.
• Labels can be deleted by reassigning all addresses using the setlabel RPC method.
• There isn't support for sending transactions from a label, or for determining which label a transaction was sent from.
• Labels do not have a balance.

Here are the changes to RPC methods:

Deprecated Method	New Method	Notes
getaccount	getaddressinfo	getaddressinfo returns a json object with address information instead of just the name of the account as a string.
getaccountaddress	getlabeladdress	getlabeladdress throws an error by default if the label does not already exist, but provides a force option for compatibility with existing applications.
getaddressesbyaccount	getaddressesbylabel	getaddressesbylabel returns a json object with the addresses as keys, instead of a list of strings.
getreceivedbyaccount	getreceivedbylabel	no change in behavior
listaccounts	listlabels	listlabels does not return a balance or accept minconf and watchonly arguments.
listreceivedbyaccount	listreceivedbylabel	Both methods return new label fields, along with account fields for backward compatibility.
move	n/a	no replacement
sendfrom	n/a	no replacement
setaccount	setlabel	Both methods now: allow assigning labels to any address, instead of raising an error if the address is not receiving address. delete the previous label associated with an address when the final address using that label is reassigned to a different label, instead of making an implicit getaccountaddress call to ensure the previous label still has a receiving address.

Changed Method	Notes
addmultisigaddress	Renamed account named parameter to label. Still accepts account for backward compatibility if running with '-deprecatedrpc=accounts'.
getnewaddress	Renamed account named parameter to label. Still accepts account for backward compatibility. if running with '-deprecatedrpc=accounts'
listunspent	Returns new label fields. account field will be returned for backward compatibility if running with '-deprecatedrpc=accounts'
sendmany	The account named parameter has been renamed to dummy. If provided, the dummy parameter must be set to the empty string, unless running with the -deprecatedrpc=accounts argument (in which case functionality is unchanged).
listtransactions	The account named parameter has been renamed to dummy. If provided, the dummy parameter must be set to the string *, unless running with the -deprecatedrpc=accounts argument (in which case functionality is unchanged).
getbalance	account, minconf and include_watchonly parameters are deprecated, and can only be used if running with '-deprecatedrpc=accounts'

0.20.5

Bitcoin ABC version 0.20.5 is now available from:

https://download.bitcoinabc.org/0.20.5/

This release includes the following features and fixes:

• It is now possible to unload wallets dynamically at runtime. This feature is
  currently only available through the RPC interface.

GUI changes

• Wallets loaded dynamically through the RPC interface may now be displayed in
  the bitcoin-qt GUI.
• The default wallet will now be labeled [default wallet] in the bitcoin-qt
  GUI if no name is provided by the -wallet option on start up.
• Wallets dynamically unloaded will now be reflected in the gui.
• Block storage can be limited under Preferences, in the Main tab. Undoing
  this setting requires downloading the full blockchain again. This mode is
  incompatible with -txindex and -rescan.

0.20.4

Bitcoin ABC version 0.20.4 is now available from:

https://download.bitcoinabc.org/0.20.4/

This release includes the following features and fixes:

• Minor bug fixes and improvements.
• New fees field introduced in getrawmempool, getmempoolancestors,
  getmempooldescendants and getmempoolentry when verbosity is set to
  true with sub-fields ancestor, base, modified and descendant
  denominated in BCH. This new field deprecates previous fee fields, such a
  fee, modifiedfee, ancestorfee and descendantfee.

Dynamic creation of wallets

• Previously, wallets could only be loaded or created at startup, by
  specifying -wallet parameters on the command line or in the bitcoin.conf
  file. It is now possible to create wallets dynamically at runtime:

• New wallets can be created (and loaded) by calling the createwallet RPC.
  The provided name must not match a wallet file in the walletdir directory
  or the name of a wallet that is currently loaded.

• This feature is currently only available through the RPC interface.

0.20.3

Bitcoin ABC version 0.20.3 is now available from:

https://download.bitcoinabc.org/0.20.3/

This release includes the following features and fixes:

• Minor bug fixes and improvements.

0.20.2

Bitcoin ABC version 0.20.2 is now available from:

https://download.bitcoinabc.org/0.20.2/

This release includes the following features and fixes:

• Improved initial block download performance by ~20%.
• Improved initial block download performance during pruning.
• bitcoin-qt -resetguisettings now generates a backup of the former GUI settings.
• Removed features that were deprecated in 0.19.x, including signrawtransaction,
  fundrawtransaction -reserveChangeKey, parts of validateaddress, use of
  addresses in createmultisig, and other miscellaneous behaviors.
• Minor logging improvements.
• Introduced submitheader RPC for submitting header candidates as chaintips.

0.20.1

Bitcoin ABC version 0.20.1 is now available from:

https://download.bitcoinabc.org/0.20.1/

This release includes the following features and fixes:

• From 0.20.1 onwards macOS <10.10 is no longer supported.
  0.20.1 is built using Qt 5.9.6, which doesn't support
  versions of macOS older than 10.10.
• sendmany now shuffles outputs to improve privacy, so any previously expected behavior with regards to output ordering can no longer be relied upon.
• It is no longer possible to create a new receiving address from the address
  book in bitcoin-qt; the Receive tab should be used instead.
• Documentation improvements.
• Minor bug fixes.

0.20.0

Bitcoin ABC version 0.20.0 is now available from:

https://download.bitcoinabc.org/0.20.0/

This release includes the following features and fixes:

• Support for Nov 2019 upgrade features, as detailed at https://github.com/bitcoincashorg/bitcoincash.org/blob/master/spec/2019-11-15-upgrade.md
  • Schnorr signatures for OP_CHECKMULTISIG(VERIFY): https://github.com/bitcoincashorg/bitcoincash.org/blob/master/spec/2019-11-15-schnorrmultisig.md
  • Enforce MINIMALDATA in script: https://github.com/bitcoincashorg/bitcoincash.org/blob/master/spec/2019-11-15-minimaldata.md
• Bump automatic replay protection to May 2020 upgrade.
• Searching by transaction ID is now available in bitcoin-qt.
• Minor bug fixes.

0.19.12

Bitcoin ABC version 0.19.12 is now available from:

https://download.bitcoinabc.org/0.19.12/

This release includes the following features and fixes:

• Add the getblockstats RPC to get statistics on a block or a block range.
• Logging improvements to reduce noisy network messages.
• Logging added during wallet rescans.
• Minor bug fixes, stability improvements, and typo corrections.

0.19.11

Bitcoin ABC version 0.19.11 is now available from:

https://download.bitcoinabc.org/0.19.11/

This release includes the following features and fixes:

Dynamic loading of wallets

Previously, wallets could only be loaded at startup, by specifying -wallet parameters on the command line or in the bitcoin.conf file. It is now possible to load wallets dynamically at runtime by calling the loadwallet RPC.

The wallet can be specified as file/directory basename (which must be located in the walletdir directory), or as an absolute path to a file/directory.

This feature is currently only available through the RPC interface. Wallets loaded in this way will not display in the bitcoin-qt GUI.