Single-leaf script-path example

Question

I'm searching for Taproot script-path examples and so far found a two-leaf example here. Is there any single-leaf construction on testnet or somewhere?

I'm wondering if TapBranch calculation is skipped for single-leaf constructions. Is single-leaf TapLeaf directly commits to TapTweak, or TapBranch is applied in-between?

Answer 1

With a single leaf, there is no TapBranch step. That would be impossible, as there are no two branches to combine. The TapLeaf hash is directly used in the TapTweak step.

I will try to add a few examples to the BIP soon.