Blockchain technology provides efficient and secure solutions to various online activities by
utilizing a wide range of cryptographic tools. In this article, we survey the existing literature …

A succinct non-interactive argument of knowledge (SNARK) allows a prover to produce a
short proof that certifies the veracity of a certain NP-statement. In the last decade, a large …

Although they have been studied for a long time, distributed signature protocols have
garnered renewed interest in recent years in view of novel applications to topics like …

Decentralized and permissionless ledgers offer an inherently low transaction rate, as a
result of their consensus protocol demanding the storage of each transaction on-chain. A …

We introduce MatRiCT+, a practical private blockchain payment protocol based on “post-
quantum” lattice assumptions. MatRiCT+ builds on MatRiCT due to Esgin et al.(ACM …

Quantum computers pose a significant threat to blockchain technology's security, which
heavily relies on public-key cryptography and hash functions. The cryptographic algorithms …

Adaptor signatures are a novel cryptographic primitive with important applications for
cryptocurrencies. They have been used to construct second layer solutions such as payment …

Payment Channel Networks (PCNs) have given a huge boost to the scalability of blockchain-
based cryptocurrencies: Beyond improving the transaction rate, PCNs enabled cheap cross …

Adaptor signatures extend the functionality of regular signatures through the computation of
pre-signatures on messages for statements of NP relations. Pre-signatures are publicly …

Adaptor signatures have seen wide applications in layer-2 and peer-to-peer blockchain
applications such as atomic swaps and payment channels. We first identify two …