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In this episode of Bitcoin, Explained, moderators Aaron van Werdenum and Sjors Provoost discuss Bitcoin Core 22.0, the latest major version of the Bitcoin Core software client, currently the de facto reference implementation of the Bitcoin protocol.
Van Werdenum and Provoost highlight several improvements to the Bitcoin Core software. The first of these is hardware wallet support in the graphical user interface (GUI).
While hardware wallet support was introduced in several previous Bitcoin Core versions, it is now fully available in the GUI.
The second highlighted upgrade is support for the Invisible Internet Project (I2P), a Tor-like Internet privacy layer.
Van Werdenum and Provoost also briefly discuss the differences between I2P and Tor. The third upgrade discussed below is Taproot support. While the Taproot activation logic was already included in Bitcoin Core 0.21.1, Bitcoin Core 22.0 will be the first major Bitcoin Core version ready to support Taproot when it activates this November and includes some basic Taproot features.
The fourth upgrade that Aaron and Sjors are discussing is an update to the testmempoolaccept logic that paves the way for a larger packet relay upgrade. In a future version, this could allow transactions to be transmitted over the Bitcoin network in packets with multiple transactions at the same time.
In addition, Aaron and Sjors briefly discuss an extension for creating multisig and adding multisig addresses, the new NAT-PMP option, and more.