research & development

Ethereum Dev Update 2015 / Week 44

With DEVCON1 a mere week away, the teams are excited and preparing to share all the great tools and technology the ecosystem has to offer. There will be hundreds of developers and dozens of talks including Nick Szabo, Vitalik Buterin, and Marley Gray from Microsoft. Tickets are limited and we anticipate selling out, so if you haven’t already registered, head on over to https://devcon.ethereum.org to secure your spot now! cpp-ethereum TurboEthereum released 1.0.0 of the C++ tools. Work has been...
devcon

Microsoft to Sponsor Ethereum’s DEVCON1

London, United Kingdom, October 28th - Ethereum is happy to announce that Microsoft will sponsor and attend DΞVCON1, the premier Ethereum developer conference. Marley Gray, Director of Technology Strategy US Financial Services at Microsoft said, “Microsoft is excited to sponsor and attend Ethereum’s DevCon1. We find the Ethereum blockchain incredibly powerful and look forward to collaborating within the Ethereum Community. We see a future where the combination of Microsoft Azure and Ethereum can enable new innovative platforms like Blockchain-as-a-Service. This...
devcon

Nick Szabo Confirmed as Keynote Speaker of Ethereum’s DEVCON1

London, United Kingdom, October 22nd - The Ethereum Foundation is pleased to announce the Keynote Speaker of Ethereum’s annual conference DΞVCON1, Nick Szabo. Nick’s keynote will focus on the history of the blockchain, smart contracts and assets on the blockchain. Nick is a computer scientist, legal scholar and cryptographer known for his research on digital contracts and digital currency. The phrase and concept of “smart contracts” was developed by Szabo with the intent of merging contract law into programming protocols...
security

Security alert [Implementation of BLOCKHASH instruction in C++ and Go clients can potentially cause consensus issue – Fixed. Please update.]

Summary: Erroneous implementation of BLOCKHASH can trigger a chain reorganisation leading to consensus problems Affected configurations: All geth versions up to 1.1.3 and 1.2.2. All eth versions prior to 1.0.0. Likelihood: Low Severity: Medium Impact: Medium Details: Both C++ (eth) and Go (geth) clients have an erroneous implementation of an edge case in the Ethereum virtual machine, specifically which chain the BLOCKHASH instruction uses for retrieving a block hash. This edge case is very unlikely to happen on a live...
research & development

Vitalik’s Research and Ecosystem Update

Over the last five days, myself, our executive director Ming Chan, and several others from the Ethereum team and Ethereum-based projects and businesses including Maker, String/Dfinity and Consensys have been visiting China and Hong Kong, where there have been a series of back-to-back conferences and events most notably including the Blockchain Workshop in Hong Kong on Oct 11-13 and the “First Global Blockchain Summit” in Shanghai organized by our friends at Wanxiang on Oct 15-16, while at the same time...
research & development

Ethereum Dev Update 2015 / Week 41

In an effort to bring the community more information about the going-ons at Ethereum, we’re planning to release semi-weekly updates of project progress. I hope this provides some high-level information without having to live on GitHub ;) The Go and C++ teams have daily standups and are making regular progress along with several other improvements around the ecosystem. Concurrent with this, the teams are gearing up for DEVCON1, preparing talks and presentations along with finalizing more details in the coming weeks. If you...
security

Security Advisory [eth (cpp-ethereum) potentially vulnerable if running with UPnP enabled]

Affected configurations: Issue reported for eth (cpp-ethereum).</section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody">Likelihood: Medium</section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody">Severity: High</section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody">Impact: Potentially achieve remote code execution on a machine running eth (cpp-ethereum)</section><section class="postbody"></section><section class="postbody"></section><section class="postbody">Details:</section>A vulnerability found in the MiniUPnP library can potentially affect eth clients running with UPnP enabled. Effects on expected chain reorganisation depth: none</section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody"></section><section class="postbody">Remedial action taken by Ethereum: We are verifying whether this can indeed...
research & development

The Evolution of Ethereum

Many of you know that the Ethereum platform grew out of the realization that blockchains can go far beyond currency, together with a frustration with the limitations of previous projects. The core idea was simple: a blockchain with a built-in Turing-complete programming language, allowing users to build any kind of applications on top. Over time, the vision evolved and expanded. The blockchain remains a crucial centerpiece, but it is ultimately only part of a larger vision of “web 3.0” as...
research & development

More uncle statistics

The following are some interesting results on the performance of different miners over the course of the first 280,000 blocks of the Ethereum blockchain. For this timespan I have collected the list of block and uncle coinbase addresses; raw data can be found here for blocks and here for uncles, and from this we can glean a lot of interesting information particularly about stale rates and how well-connected the different miners and pools are. First off, the scatter plot: What...