Bitcoin's Impending Accounting Disaster

bitcoin bitfinex bcc fork July 31, 2017 at 04:20 AM Emin Gün Sirer
Shenanigans at Bitfinex are poised to mess up their accounting, confuse the price of BCC, and potentially bankrupt the already-bankrupt exchange.

An In-Depth Look at the Parity Multisig Bug

ethereum parity wallet security July 22, 2017 at 09:47 AM Lorenz Breidenbach, Phil Daian, Ari Juels, and Emin Gün Sirer
We do a deep-dive into Parity's multisig bug.

Parity's Wallet Bug is not Alone

ethereum bitgo parity wallet security July 20, 2017 at 05:18 AM Emin Gün Sirer
The bug in the Parity multisig wallet that caused the loss of $30M has the same root cause as a bug in the BitGo multisig wallet that I found a year ago.

Atomically Trading with Roger: Gambling on the success of a hardfork

bitcoin loaded roger atomic trade gamble unlimited July 11, 2017 at 07:20 PM Patrick McCorry, Ethan Heilman, and Andrew Miller
A new atomic trade protocol to allow two parties to publicly pledge support for different forks in the event a blockchain splits into two.

Twitter, Reddit and 4chan: The Web's Fake News Centipede

fake news influence web web centipede alternative news mainstream news July 11, 2017 at 07:38 AM Savvas Zannettou, Michael Sirivianos, and Jeremy Blackburn
Twitter, Reddit and 4chan: The Web Centipede.

Bancor Is Flawed

ethereum bancor ico June 19, 2017 at 10:18 AM Emin Gün Sirer and Phil Daian
Bancor just raised $144M through the biggest ICO in history. We describe why their approach is flawed.

Announcing The Town Crier Service

ethereum town crier virtual notary May 15, 2017 at 10:01 AM Yan Ji, Ari Juels, and Fan Zhang
Town Crier is an oracle service for smart contracts.

Levels of Techie Enlightenment

research meta May 04, 2017 at 10:01 AM Emin Gün Sirer
This post makes the case that people, new to an area and eager to become an expert, go through a well-defined series of stages.

Hijacking Bitcoin: Routing Attacks on Cryptocurrencies

routing bgp bitcoin May 01, 2017 at 10:48 AM Maria Apostolaki, Aviv Zohar, and Laurent Vanbever
Cryptocurrencies are vulnerable to attacks targeting the network routing layer. In this guest post, Apostolaki, Zohar and Vanbever show that BGP attacks are back, and this time, they have a high value target.

Revealing the hidden links in the Monero blockchain

monero zcash April 19, 2017 at 10:11 AM Andrew Miller
We detail a new technique for linking Monero transactions.