Viewing posts for the category Bitcoin
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).
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.
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.
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".
Adam Gibson (22)