Chain Reorganisation Depth Expectations

This following shows our current and planned expectations concerning maximum likely chain-reorganisation depth. We would not consider transactions within this depth to have an exceptionally high chance of being permanent. These are our own expectations…

Security Alert 1 [windows+alethzero]

This affects users of Alethzero GUI client on Windows. Users of eth CLI client or not on the Windows platform are unlikely to be affected but should take action detailed below. Users of Frontier command line interface geth are unaffected. Issue descri…

On Public and Private Blockchains

Over the last year the concept of “private blockchains” has become very popular in the broader blockchain technology discussion. Essentially, instead of having a fully public and uncontrolled network and state machine secured by cryptoeconomics (eg. pr…

Ethereum Protocol Update 1

Here comes the first Frontier patch, and this is a big one! Before you go further, if your keys date back from Go 1.0 rc or C++ 0.9.36, note that you should regenerate all of your keys NOW. Though some releases of the pre-alpha and alpha clients are s…

The Thawing Frontier

After a smooth launch, please find a few updates of note below. These probably will be of interest only to the more advanced users amongst you – if you’re not a miner, there is nothing to action. Epoch switch in 2 hours Let’s start with a quick heads…

Introducing Casper “the Friendly Ghost”

Hi everyone – Vlad here. I’ve been working on the analysis and specification of  “proof-of-stake” blockchain architecture since September 2014. While Vitalik and I haven’t agreed on all of the details of the spec, we do have consensus on many propertie…

Bitcoin: Securing The Network

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Ethereum Launches

A few minutes ago, many of you generated and loaded the Ethereum Genesis block, marking the inception of Frontier, the first Live release of the Ethereum project. The Dev team joins me in thanking each and everyone of you for your support during the p…

A few last minute notes…

Genesis is roughly 4 hours away, here are a few last minute pointers for those preparing: All clients are functional on all platforms and build to completion: http://ethereum-buildboard.meteor.com/ Please note that it will take a little while (10-100…

Final Steps

An update as promised: all systems are now ‘Go’ on the technical side (pun intended) and we intend to release Frontier this week. Thank you to everyone who provided feedback on my previous blog post. What became apparent is that prior to the big day, …

Frontier is coming – what to expect, and how to prepare

We are only days away from launching ‘Frontier’, the first milestone in the release of the Ethereum project. Frontier will be followed by ‘Homestead’, ‘Metropolis’ and ‘Serenity’ throughout the coming year, each adding new features and improving the us…

How do you know Ethereum is secure?

As I’m writing this, I’m sitting in the London office and pondering how to give you a good overview about the work we’ve been doing to secure Ethereum’s protocols, clients and p2p-network. As you might remember, I joined the Ethereum team at the end of…

On Abstraction

Special thanks to Gavin Wood, Vlad Zamfir, our security auditors and others for some of the thoughts that led to the conclusions described in this post One of Ethereum’s goals from the start, and arguably its entire raison d’être, is the high degree o…

State Tree Pruning

One of the important issues that has been brought up over the course of the Olympic stress-net release is the large amount of data that clients are required to store; over little more than three months of operation, and particularly during the last mon…