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Schnorrless Scriptless Scripts

Posted by: Adam Gibson | in Bitcoin, Cryptography | 2 days, 12 hours ago | 0 comments

Introduction

The weekend of April 4th-5th 2020 we had a remote "Lightning Hacksprint" organized by the ever-excellent Fulmo, one Challenge was related to "Payment Points" (see here; see lots more info about the hacksprint at that wiki) and was based around a new innovation recently seen in the world of adaptor signatures. Work was led by Nadav Kohen of Suredbits and Jonas Nick of Blockstream; the latter's API for the tech described below can be seen currently as a PR to the secp256k1 project here. The output from Suredbits was a demo as show here on their youtube, a PTLC (point time locked contract, see their blog for more details on that).

Multiparty S6

Posted by: Adam Gibson | in Bitcoin | 11 months, 2 weeks ago | 11 comments

The multiparty symmetrical Schnorr signature scriptless script shuffle

This blog is in the category of "a new-ish idea about privacy tech"; like similar previous ones (e.g.: CoinJoinXT) it is little more than an idea, in this case I believe it is correct, but (a) I could be wrong and there could be a flaw in the thinking and (b) it's not entirely clear how practically realistic it will be. What I do hope, however, is that the kernel of this idea is useful, perhaps in Layer 2 tech or in something I haven't even thought about.

Finessing commitments

Posted by: Adam Gibson | in Bitcoin, Cryptography | 1 year, 2 months ago | 4 comments

Introduction

This post was mostly prompted by a long series of discussions had online and in person with many people, including in particular Adam Back and Tim Ruffing (but lots of others!) - and certainly not restricted to discussions I took part in - about the tradeoffs in a version of Bitcoin that does actually use Confidential Transactions.

PayJoin

Posted by: Adam Gibson | in Bitcoin | 1 year, 2 months ago | 2 comments

PayJoin.

Payjoin - a basic demo

Posted by: Adam Gibson | in Bitcoin, Joinmarket, Testing | 1 year, 2 months ago | 0 comments

I'll shortly be writing a blog post about the idea of "PayJoin", which is a variant of what's sometimes been called "Pay-To-Endpoint" coinjoin, or "p2ep".