Upcoming BIP341 Taproot support

General
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The Internet Computer recently added support for threshold Schnorr signatures including BIP-340 Schnorr, as used in Bitcoin. However this support did not extend to the full set of script-based spending made possible by BIP-341 (Taproot) because it is not currently possible to provide the relevant Taproot script hashes to the signature operation. We plan on extending the sign_with_schnorr interface to support this as an optional input.

Please review the draft interface spec change to see the specific proposal. We’d welcome your comments.

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Any timeline for this?

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I can’t commit to a specific date right now, but the feature is actively being implemented already in the replica, and we plan to roll it out as a feature as soon as the interface spec and implementation are complete.

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