Add PTLC

[georgezgeorgez]

https://github.com/orgs/ignition-pillar/discussions/2

[georgezgeorgez]

Need to rebase this for latest changes

[sumamu]

I've started reviewing this, but I find it difficult to understand how it works. Also I'm not finding anything on PTLC for Ed25519. @georgezgeorgez, can you hare some materials, please?

[georgezgeorgez]

Have you read through the linked discussion?

Schnorr is a general algorithm. ed25519 is a Schnorr variant.

https://github.com/WebOfTrustInfo/rwot1-sf/blob/master/topics-and-advance-readings/Schnorr-Signatures--An-Overview.md

Most of the production ready libraries to take advantage of the linearity properties of Schnorr have been written for bitcoin on the secp256k1 curve. For example MuSig2. Equivalent libraries for ed25519 for different languages may not exist yet.

https://github.com/ZenGo-X/multi-party-eddsa

https://github.com/ZenGo-X/two-party-musig2-eddsa

[georgezgeorgez]

Put back into draft until code is rebased

[alienc0der]

Put back into draft until code is rebased

Do you have an ETA?

[0x3639]

In the last dev meeting I asked @georgezgeorgez about the status of this PR. I believe he said he was waiting for community review. @sumamu was going to take another look. I think he indicated he reviewed it previously but had some questions. If anyone wants some background color on this, George made this post on the forum.

https://forum.hypercore.one/t/ptlcs-the-standard/200