In recent years, blockchain has gained widespread attention as an emerging technology for
decentralization, transparency, and immutability in advancing online activities over public …

Abstract The proliferation of Decentralised Finance (DeFi) and Decentralised Autonomous
Organisations (DAO), which in current form are exposed to front-running of token …

Recent years have seen the emergence of practical advanced cryptographic tools that not
only protect data privacy and authenticity, but also allow for jointly processing data from …

In this work, we construct a second price (Vickrey) auction protocol (SPA), which does not
require any auctioneers and ensures total privacy in the presence of rational parties …

Sealed bid auctions are used to allocate a resource among a set of interested parties.
Traditionally, auctions need the presence of a trusted auctioneer to whom the bidders …

The NFT market has been booming in recent years. In 2021, digital artist Pak's newest
creation, The Merge, fetched US $91.8 million on Nifty Gateway. Since then, many NFT …

In an open-bid auction, a bidder can know the budgets of other bidders. Thus, a sealed-bid
auction that hides bidding prices is desirable. However, in previous sealed-bid auction …

Sealed-bid auctions play a crucial role in blockchain ecosystems. Previous works introduced
viable blockchain sealed-bid auction protocols, leveraging timed commitments for bid …

Timed data delivery is a critical service for time-sensitive applications that allows a sender to
deliver data to a recipient, but only be accessible at a specific future time. This service is …

This work addresses the inherent issues of high latency in blockchains and low scalability in
traditional consensus protocols. We present pod, a novel notion of consensus whose first …