Bitcoin ABC 0.26.3 Release Notes

Bitcoin ABC version 0.26.3 is now available from:

This release includes the following features and fixes:

RPC changes

A new total_fee field showing the total fees for all transactions in the
mempool has been added to the getmempoolinfo RPC.
Added a new getavalancheproofs RPC to retrieve all avalanche proof IDs
tracked by the node.
Added a new field immature_stake_amount to getavalancheinfo to report
the total amount of stake that will mature within the next 2016 blocks.
The testmempoolaccept RPC now accepts multiple transactions (still experimental at the moment,
API may be unstable). This is intended for testing transaction packages with dependency
relationships; it is not recommended for batch-validating independent transactions. In addition to
mempool policy, package policies apply: the list cannot contain more than 50 transactions or have a
total size exceeding 101K bytes, and cannot conflict with (spend the same inputs as) each other or
the mempool.
listunspent now includes ancestorcount, ancestorsize, and
ancestorfees for each transaction output that is still in the mempool.

Added NAT-PMP port mapping support via libnatpmp.
Use the -natpmp command line option to use NAT-PMP to map the listening port. If both UPnP
and NAT-PMP are enabled, a successful allocation from UPnP prevails over one from NAT-PMP.