aaron-recompile recently published a public draft of Mastering Taproot (#1441328), and now aaron is back again with a tool for helping you analyze tapscripts: rootscope.

This gets well beyond my current understanding of Tapscript, but here's why I think it's neat:

One of the cool things about taproot is that you can have a variety of different spending conditions for your coins, but using any particular spending path doesn't reveal any of the others. So you may have a 2 of 2 multisig with a timelocked condition for a recovery key, but when you spend using the 2 of 2 keys, nobody learns anything that would let them know you have a recovery key path as well.

These taproot scripts can be difficult to analyze. You don't need to be concerned with the details if you're a normal bitcoin user, but if you are a researcher or developer it might be helpful to know more about how certain transactions work. So aaron-recompile built this little tool called rootscope that

Given script + control block, RootScope reconstructs:

• TapLeaf hash
• Merkle path/root
• TapTweak
• output key + bech32m address
• optional expected-address match result

It's mostly an educational tool and it doesn't reveal anything about the transactions that isn't already revealed, but it makes inspecting taproot transactions a little easier. Should you want to journey down the taproot rabbit hole, this may be useful.

There's a delving post about it as well.