The new update largely bolstered remote procedure calls (RPCs) — communication channels that allow users to interact with the Bitcoin network — as well as improvements to the build system, files, tools and utilities, wallets, graphical user interface (GUI) and network.
A few notable changes include the removal of support for the anonymous browser Tor v2 in favor of Tor v3 and allowing the use of external signers such as hardware wallets.
Bitcoin Core 22.0 will not be compatible with macOS versions earlier than 10.14, but it will support all macOS after that in addition to Linux kernel and Windows 7.
The last update to the Bitcoin Core occurred on January 14, 2021. One hundred and twenty-eight individuals are credited as helping to develop the most recent version.
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