ResearchBitcoin Dev Archive BIPs
BIP 387: Tapscript Multisig Output Script Descriptors
Applications, Specification, Deployed. By Pieter Wuille, Ava Chow. Never named in a subject line or discussed by number on the list.
In Bitcoin Core
First shipped in Bitcoin Core 24.0 .
Tapscript Multisig Output Script Descriptors are implemented as of v24.0 (PR 24043).
From Bitcoin Core's doc/bips.md.
The threads, in order
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