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The topic of mining centralization has been a very important one over the past few weeks. GHASH.io, the Bitcoin network's largest mining pool, has for the past month directed over 40% of the Bitcoin network's hashpower, and two weeks ago briefly spiked...

Writing effective decentralized applications in Ethereum is at the same time easy and hard. The easy part we all know: rather than needing to create your own blockchain, manage complicated database code, deal with networking and NAT traversal, or any o...

Decentralization, n. The security assumption that a nineteen year old in Hangzhou and someone who is maybe in the UK, and maybe not, have not yet decided to collude with each other. There has been a large amount of ruckus in the past week about the is...

Development of the Ethereum project has gone very well over the months since inception.  The core activity — development of the software platform — is on track and many developers around the world are starting to build small, exploratory distributed ap...

Although truly solving blockchain scalability fundamentally, that is to say figuring out a solution to the problem that every node must process every transaction, is a very hard problem, and all suggested solutions rely on either highly advanced crypto...

One of the challenges when creating a new cryptocurrency is figuring out what the distribution model is going to be. Who is going to receive the currency units, at what time, and what is the mechanism that decides? Despite the crucial importance of thi...

Our current proof of work design, blockchain-based proof of work, is the second iteration of our attempt to create a mining algorithm that is guaranteed to remain CPU-friendly and resistant to optimization by specialized hardware (ASICs) in the long te...

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One of the most popular topics in the digital consensus space (a new term for cryptocurrency 2.0 that I’m beta-testing) is the concept of decentralized autonomous entities. There are now a number of groups rapidly getting involved in the space, includi...

Over the past two weeks our primary focus has been getting all of the clients updated to PoC5 compatibility, and it definitely has been a long road. Among the changes to the VM include: The new init/code mechanism: basically, when you create a contr...

The idea of releasing a new currency as a mechanism for funding protocol development is perhaps one of the most interesting economic innovations to come out of the cryptocurrency space. In the past twenty years, we have seen a growing centralization in...

Ether (ETH), the cryptofuel that powers distributed applications on the Ethereum platform, will be issued at a constant annual linear rate via the block mining process. This rate is 0.3 times the total amount of ETH that will be purchased in the pre-sa...

The content of this tutorial is intended to apply to PoC5. Most of the instructions given below will not work in the older PoC4 implementations of AlethZero (C++) and Ethereal (Go) Over the last few weeks, we have made a large number of changes to the...

One of the main applications of Ethereum that people have been interested in is financial contracts and derivatives. Although financial derivatives have acquired a reputation as a highly risky and destabilizing device with the sole function of enrichin...

In the past two weeks our lead C++ developer, Gavin Wood, and myself have been spending a lot of time meeting the local Ethereum community in San Francisco and Silicon Valley. We were very excited to see such a large amount of interest in our project, ...

There are a lot of interesting changes to the Ethereum protocol that are in the works, which will hopefully improve the power of the system, add further features such as light-client friendliness and a higher degree of extensibility, and make Ethereum ...

In the last installment of this series, we talked about what “smart contracts” (or, perhaps more accurately, “self-enforcing contracts”) are, and discussed in detail the two main mechanisms through which these contracts can have “force”: smart property...

Many of the concepts that we promote over in Ethereum land may seem incredibly futuristic, and perhaps even frightening, at times. We talk about so-called “smart contracts” that execute themselves without any need, or any opportunity, for human interve...

Scalability is now at the forefront of the technical discussion in the cryptocurrency scene. The Bitcoin blockchain is currently over 12 GB in size, requiring a period of several days for a new bitcoind node to fully synchronize, the UTXO set that must...

The Ethereum Project has had the incredible privilege to launch its PoC testnet and engage the crypto-currency community over the past two months. During our experiences, we’ve encountered a lot of passionate support and wonderful questions that have h...

Bitcoin developer Gregory Maxwell writes the following on Reddit: There is a design flaw in the Bitcoin protocol where its possible for a third party to take a valid transaction of yours and mutate it in a way which leaves it valid and functionally id...

There have been a number of very interesting developments in cryptography in the past few years. Satoshi’s blockchain notwithstanding, perhaps the first major breakthrough after blinding and zero-knowledge proofs is fully homomorphic encryption, a tech...

My previous post introducing Ethereum Script 2.0 was met with a number of responses, some highly supportive, others suggesting that we switch to their own preferred stack-based / assembly-based / functional paradigm, and offering various specific criti...

This post will provide the groundwork for a major rework of the Ethereum scripting language, which will substantially modify the way ES works although still keeping many of the core components working in the exact same way. The rework is necessary as a...

Of all the parts of the Ethereum protocol, aside from the mining function the fee structure is perhaps the least set in stone. The current values, with one crypto operation taking 20 base fees, a new transaction taking 100 base fees, etc, are little mo...

Important notice: any information from this post regarding the ether sale is highly outdated and probably inaccurate. Please only consult the latest blog posts and official materials at ethereum.org for information on the sale Ethereum received an inc...

I first wrote the initial draft of the Ethereum whitepaper on a cold day in San Francisco in November, as a culmination of months of thought and often frustrating work into an area that we have come to call “cryptocurrency 2.0″ – in short, using the Bi...

The purpose of this post is not to say that Ethereum will be using Slasher in place of Dagger as its main mining function. Rather, Slasher is a useful construct to have in our war chest in case proof of stake mining becomes substantially more popular o...

In the first two parts of this series, we talked about what the basic workings of a decentralized autonomous corporation might look like, and what kinds of challenges it might need to deal with to be effective. However, there is still one question that...