Consensus Under Adversary Majority Done Right

Autor: Sridhar, Srivatsan, Tas, Ertem Nusret, Neu, Joachim, Zindros, Dionysis, Tse, David

A spectre is haunting consensus protocols-the spectre of adversary majority. The literature is inconclusive, with possibilities and impossibilities running abound. Dolev and Strong in 1983 showed an early possibility for up to 99% adversaries. Yet, w

Externí odkaz: http://arxiv.org/abs/2411.01689

Proofs of Proof-of-Stake with Sublinear Complexity

Autor: Agrawal, Shresth, Neu, Joachim, Tas, Ertem Nusret, Zindros, Dionysis

Popular Ethereum wallets (like MetaMask) entrust centralized infrastructure providers (e.g., Infura) to run the consensus client logic on their behalf. As a result, these wallets are light-weight and high-performant, but come with security risks. A m

Externí odkaz: http://arxiv.org/abs/2209.08673

Cryptocurrency Egalitarianism: A Quantitative Approach

Autor: Karakostas, Dimitris, Kiayias, Aggelos, Nasikas, Christos, Zindros, Dionysis

Since the invention of Bitcoin one decade ago, numerous cryptocurrencies have sprung into existence. Among these, proof-of-work is the most common mechanism for achieving consensus, whilst a number of coins have adopted "ASIC-resistance" as a desirab

Externí odkaz: http://arxiv.org/abs/1907.02434

Structure and Content of the Visible Darknet

Autor: Avarikioti, Georgia, Brunner, Roman, Kiayias, Aggelos, Wattenhofer, Roger, Zindros, Dionysis

In this paper, we analyze the topology and the content found on the "darknet", the set of websites accessible via Tor. We created a darknet spider and crawled the darknet starting from a bootstrap list by recursively following links. We explored the

Externí odkaz: http://arxiv.org/abs/1811.01348

Proof-of-Burn

Autor: Karantias, Kostis, Kiayias, Aggelos, Zindros, Dionysis

Publikováno v: Karantias, K, Kiayias, A & Zindros, D 2020, Proof-of-Burn . in J Bonneau & N Heninger (eds), Financial Cryptography and Data Security : 24th International Conference, FC 2020, Kota Kinabalu, Malaysia, February 10-14, 2020 Revised Selected Papers . Lecture Notes in Computer Science, vol. 12059, pp. 523-540, 24th International Conference on Financial Cryptography and Data Security 2020, Kota Kinabalu, Malaysia, 10/02/20 . https://doi.org/10.1007/978-3-030-51280-4_28

Proof-of-burn has been used as a mechanism to destroy cryptocurrency in a verifiable manner. Despite its well known use, the mechanism has not been previously formally studied as a primitive. In this paper, we put forth the first cryptographic defini

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3094::e9005f647a39de9f84c3ab145e11b8f2
https://hdl.handle.net/20.500.11820/90cf6302-d606-493a-aaaf-a583c019489d