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?

score 3 · Accepted Answer · answered Oct 16 '21 at 16:03

3

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.

answered Oct 16 '21 at 16:03

Pieter Wuille

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Thanks! Looking forward to more examples. – Burak Oct 16 '21 at 16:22
Update: Used TapLeaf directly in the TapTweak step and this time managed to spend a single-leaf P2TR output (using btcdeb). https://blockstream.info/testnet/tx/d5f3924fa35c913e03f6c16061c860c5209d6c7190c75c13b6e5ac8f4326b96d – Burak Oct 16 '21 at 18:01

Single-leaf script-path example

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