Simple Taproot Channels Replaces the legacy 2-of-2 P2WSH funding output with a P2TR + MuSig2 aggregated key. Cooperative spends (the common case) are indistinguishable from single-sig outputs on chain. Status: deployed in early form across LDK, CLN, LND, Eclair as of late 2025; spec ongoing. Funding output Pre-taproot: Taproot channel: Both parties run MuSig2 KeyAgg → single 32-byte x-only pubkey, which is the Taproot output key (potentially with empty taptree, or with emergency-script leaf). Commitment tx Outputs: - — Tapscript with revocation + delay. - — simple P2TR(remote static pubkey) —…