TAG ‖ xonly(32) ‖ u32le(index) — the message that gets BIP-340 signed.
Anchored on the canonical x-only key rather than the descriptor string: a
restore reconstructs a bare descriptor that serialises differently from the
signing descriptor used at creation, and only the key agrees across both.
TAG ‖ xonly(32) ‖ u32le(index)— the message that gets BIP-340 signed.Anchored on the canonical x-only key rather than the descriptor string: a restore reconstructs a bare descriptor that serialises differently from the signing descriptor used at creation, and only the key agrees across both.