Merge pull request #69 from JeremyRubin/add-arkv2

Add ArkV2 and Clique

content/uses/arkv2.md

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+---
+title: "Ark V2"
+date: 2024-06-10T10:45:58-07:00
+author: "Burak"
+---
+> Ark v2 enables Ark Service Providers (ASPs) to reclaim their liquidity
+> without having to wait for the expiration period (4 weeks) to elapse. It
+> almost sounds too good to be true, ha?
+
+Continue Reading on [Medium](https://brqgoo.medium.com/introducing-ark-v2-2e7ab378e87b).

content/uses/clique.md

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+---
+title: "Bitcoin Clique"
+date: 2024-06-10T10:45:58-07:00
+author: "Siavash Riahi, Orfeas Stefanos Thyfronitis Litos"
+---
+
+Blockchains suffer from scalability limitations, both in terms of latency and
+throughput. Various approaches to alleviate this have been proposed, most
+prominent of which are payment and state channels, sidechains, commit-chains,
+rollups, and sharding. This work puts forth a novel commit-chain protocol,
+Bitcoin Clique. It is the first trustless commit-chain that is compatible with
+all major blockchains, including (an upcoming version of) Bitcoin.
+
+Clique enables a pool of users to pay each other off-chain, i.e., without
+interacting with the blockchain, thus sidestepping its bottlenecks. A user can
+directly send its coins to any other user in the Clique: In contrast to payment
+channels, its funds are not tied to a specific counterparty, avoiding the need
+for multi-hop payments. An untrusted operator facilitates payments by
+verifiably recording them.
+
+Furthermore, we define and construct a novel primitive, Two-Shot Adaptor
+Signatures, which is needed for Bitcoin Clique while being of independent
+interest. This primitive extends the functionality of normal Adaptor Signatures
+by allowing the extraction of the witness only after two signatures are
+published on the blockchain.
+
+Continue Reading: [https://eprint.iacr.org/2024/025](https://eprint.iacr.org/2024/025)