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Is Z-man's PTLC construction implementable using libsecp256k1-zkp?

In a mailing list post Z-man details a PTLC construction which he claims is "is almost entirely a MuSig ritual". My question is whether this MusigTweak is what is called the adaptor (last argument of ...
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Use cases for 1-of-1 musig

I noticed that it is possible to make a 1-of-1 musig. Given that the API still allows you to tweak by an adaptor as with PTLC's, I was wondering what uses a 1-of-1 musig could have. Answers need not ...
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Musig Signature Interactivity

2 Questions: Why is Musig signing always interactive? Let's say I have a Musig wallet where keys are stored in secure locations with no internet access. What are some methods to sign from these ...
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How could Schnorr signatures be aggregated across the whole transaction?

I am studying the MuSig protocol and am having trouble grasping certain segments. This is my understanding thus far: In current Bitcoin CHECKMULTISIG format, the size of the signature grows linearly ...