Bitcoin ABC 0.22.6 Release Notes

Bitcoin ABC version 0.22.6 is now available from:

https://download.bitcoinabc.org/0.22.6/

This release includes the following features and fixes:

P2P and network changes

Removal of reject network messages from Bitcoin ABC (BIP61)

This is a follow-up on the removal of BIP61 REJECT message support in
Bitcoin ABC version 0.22.5:

• Log messages that previously reported the REJECT code when a transaction was
  not accepted to the mempool now no longer report the REJECT code. The verbal
  reason for rejection is still reported.

Updated RPCs

• walletprocesspsbt and walletcreatefundedpsbt now include BIP 32
  derivation paths by default for public keys if we know them. This can be
  disabled by setting bip32derivs to false.

New settings

• A new -asmap configuration option has been added to enable IP-to-ASN mapping
  for bucketing of the network peers to diversify the network connections. The
  legacy /16 prefix mapping remains the default. See bitcoind help for more
  information. This option is experimental and subject to changes or removal in
  future releases.

• Importing blocks upon startup via the bootstrap.dat file no longer occurs
  by default. The file must now be specified with -loadblock=<file>.

Utilities

• The bitcoin-cli utility used with the -getinfo parameter now returns a
  headers field with the number of downloaded block headers on the best
  headers chain (similar to the blocks field that is also returned) and a
  verificationprogress field that estimates how much of the best block chain
  has been synced by the local node. The information returned no longer
  includes the protocolversion, walletversion, and keypoololdest fields.

Build system changes

The minimum supported miniUPnPc version is set to 1.9 (API version 10).

GUI changes

• The "Start Bitcoin Core on system login" option has been removed on macOS.