0.27.3

Bitcoin ABC 0.27.3 Release Notes

Bitcoin ABC version 0.27.3 is now available from:

https://download.bitcoinabc.org/0.27.3/

This is a maintenance release with no user-visible change.

0.27.2

Bitcoin ABC 0.27.2 Release Notes

Bitcoin ABC version 0.27.2 is now available from:

https://download.bitcoinabc.org/0.27.2/

This release includes the following features and fixes:

• getavalanchepeerinfo returns a new field availability_score that
  indicates how responsive a peer's nodes are (collectively) to polls from
  this node. Higher scores indicate a peer has at least one node that that
  responds to polls often. Lower scores indicate a peer has nodes that do not
  respond to polls reliably.

0.27.1

Bitcoin ABC 0.27.1 Release Notes

Bitcoin ABC version 0.27.1 is now available from:

https://download.bitcoinabc.org/0.27.1/

This is a maintenance release with no user-visible change.

0.27.0

Bitcoin ABC 0.27.0 Release Notes

Bitcoin ABC version 0.27.0 is now available from:

https://download.bitcoinabc.org/0.27.0/

This release includes the following features and fixes:

• The softforks field from the getblockchaininfo RPC is deprecated.
  To keep using this field, use the -deprecatedrpc=softforks option.
  Note that this field has been empty for a long time and will remain
  empty until its eventual removal.
• The ancestorcount, ancestorsize and ancestorcount fields from the
  listunspent RPC have been deprecated and will be removed in a future
  version. To keep using these fields, use the
  -deprecatedrpc=mempool_ancestors_descendants option.
• The RPC server can process a limited number of simultaneous RPC requests.
  Previously, if this limit was exceeded, bitcoind would respond with
  status code 500 (HTTP_INTERNAL_SERVER_ERROR). Now it returns status
  code 503 (HTTP_SERVICE_UNAVAILABLE).

Network upgrade

At the MTP time of 1684152000 (May 15, 2023 12:00:00 UTC), the following
changes will become activated:

• New consensus rule: The nVersion field in CTransaction now must be either
  1 or 2. This has been a policy rule (i.e. wallets already cannot use anything
  other than 1 or 2), but miners were still able to mine transactions with
  versions other than 1 and 2. Disallowing them by consensus allows us to use
  the version field for e.g. a new & scalable transaction format.
• The chained transactions limit policy will no longer be enforced by the
  mempool. All the related RPC statistics and options will become irrelevant
  and should no longer be relied upon.
• Miner fund moves from consensus rule to policy rule. This will allow future
  seamless upgrades such as changes to the miner fund without delaying until
  a flag day upgrade.
• Bump automatic replay protection to the next upgrade, timestamp 1700049600
  (Nov 15, 2023 12:00:00 UTC).

0.26.13

Bitcoin ABC 0.26.13 Release Notes

Bitcoin ABC version 0.26.13 is now available from:

https://download.bitcoinabc.org/0.26.13/

• The fee, modifiedfee, descendantfees and ancestorfees fields from the
  getrawmempool, getmempoolentry, getmempoolancestorsand
  getmempooldescendants RPCs which have been deprecated for a long time are
  now removed. They are superseded by the fees object field which provides
  the same information.
• The descendantcount, descendantsize, fees.descendant, ancestorcount,
  ancestorsize and fees.ancestor fields from the getrawmempool,
  getmempoolentry, getmempoolancestorsand getmempooldescendants RPCs are
  deprecated. To keep using these fields, use the
  -deprecatedrpc=mempool_ancestors_descendants option.

0.26.12

Bitcoin ABC 0.26.12 Release Notes

Bitcoin ABC version 0.26.12 is now available from:

https://download.bitcoinabc.org/0.26.12/

• Removed 10-block rolling finalization. This only affects configurations
  where Avalanche is explicitly disabled. This removal includes associated
  command-line parameters -finalizationdelay and -maxreorgdepth.

0.26.11

Bitcoin ABC 0.26.11 Release Notes

Bitcoin ABC version 0.26.11 is now available from:

https://download.bitcoinabc.org/0.26.11/

• An avalanche node that accepts no inbound connection will now behave as a
  poll-only node and will not advertise its proof to the avalanche network. A
  new sharing field is added to the local object returned by the
  getavalancheinfo info RPC to monitor the status.

0.26.10

Bitcoin ABC 0.26.10 Release Notes

Bitcoin ABC version 0.26.10 is now available from:

https://download.bitcoinabc.org/0.26.10/

• The getavalancheinfo RPC returns a new verification_status field
  with a status description string to indicate why local proof is not verified.

0.26.9

Bitcoin ABC 0.26.9 Release Notes

Bitcoin ABC version 0.26.9 is now available from:

https://download.bitcoinabc.org/0.26.9/

This is a maintenance release with no user-visible change.

0.26.8

Bitcoin ABC 0.26.8 Release Notes

Bitcoin ABC version 0.26.8 is now available from:

https://download.bitcoinabc.org/0.26.8/

This release includes the following features and fixes:

• Add a new RPC getblockfrompeer which permits requesting a specific block from
  a specific peer manually. The intended use is acquisition of stale chaintips
  for fork monitoring and research purposes.
• Add a new wallet RPC restorewallet to restore a wallet from a backup file
  created with the backupwallet RPC.
• The bytespersigop option has been deprecated and the more accurate
  -bytespersigcheck should be used instead.
• The sigops and sigoplimit fields of the getblocktemplate RPC are now
  deprecated and the new sigchecks and sigchecklimit fields should be used
  instead. The option -deprecatedrpc=getblocktemplate_sigops can be used to
  print the legacy fields.