0.27.9

Bitcoin ABC 0.27.9 Release Notes

Bitcoin ABC version 0.27.9 is now available from:

https://download.bitcoinabc.org/0.27.9/

This release includes the following features and fixes:

• A new gettime RPC has been added to gather the time data from the node.

0.27.8

Bitcoin ABC 0.27.8 Release Notes

Bitcoin ABC version 0.27.8 is now available from:

https://download.bitcoinabc.org/0.27.8/

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

0.27.7

Bitcoin ABC 0.27.7 Release Notes

Bitcoin ABC version 0.27.7 is now available from:

https://download.bitcoinabc.org/0.27.7/

This release includes the following features and fixes:

• The fees.ancestor, fees.descendant, descendantcount, descendantsize,
  ancestorcount and ancestorsize fields from the getrawmempool,
  getmempoolentry, getmempoolancestors and getmempooldescendants were
  deprecated since v0.27.0 and have been completely removed.

0.27.6

Bitcoin ABC 0.27.6 Release Notes

Bitcoin ABC version 0.27.6 is now available from:

https://download.bitcoinabc.org/0.27.6/

This release includes the following features and fixes:

• The ancestorcount, ancestorsize and ancestorfees fields from the
  listunspent RPC have been removed. They were deprecated since the v0.27.0
  and are no longer computed since the May 15th, 2023 eCash network upgrade.

0.27.5

Bitcoin ABC 0.27.5 Release Notes

Bitcoin ABC version 0.27.5 is now available from:

https://download.bitcoinabc.org/0.27.5/

This release includes the following features and fixes:

• Add a checkpoint after the May 15th, 2023 eCash upgrade.

0.27.4

Bitcoin ABC 0.27.4 Release Notes

Bitcoin ABC version 0.27.4 is now available from:

https://download.bitcoinabc.org/0.27.4/

This release includes the following features and fixes:

• From this version onwards, macOS versions earlier than 10.15 are no longer supported.

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).