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Questions tagged [ethereum]

Questions about Ethereum are off topic.

A blockchain-based "smart contract" system with a Turing-complete contract programming language. Questions about Ethereum should be asked on the dedicated Ethereum site: https://ethereum.stackexchange.com.

Ethereum is a "Bitcoin 2.0 / Web 3.0" distributed computing system.

Like Bitcoin, Ethereum uses a blockchain to store data and a virtual machine running a stack-based scripting language to act on transactions. Ethereum takes this further than Bitcoin by having a Turing-complete scripting language, with computing time allocated using a pay-per-instruction scheme.

Contracts on the blockchain are accessed using an HTML/JavaScript interface, this combination is known as a "Dapp", a Distributed Application. Dapps can query contract state locally and send transactions to the network. The results of contract code running in response to those transactions will be incorporated into the blockchain by a consensus network of Bitcoin-style miners.

The entire Ethereum network has the processing power of a 1999-era mobile phone, and given the costs of computing and storage on the network it should not be used for computationally or storage heavy tasks. Rather it should be used to publish and validate important state information.

For more information see - https://ethereum.org/

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What advantages and disadvantages does Ethereum have over Bitcoin?

What advantages and disadvantages does Ethereum have over Bitcoin? What can you do with Ethereum that you simply cannot with Bitcoin? What price do you pay for these additional functionalities?
Murch
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In Ethereum, what is an uncle block?

In Ethereum, what is an uncle? Why does Ethereum take this approach, instead of having a single chain of blocks back to the genesis block? If you mine a block, and it only gets included as an uncle, how much of the original reward do you get? How…
Nick ODell
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What actually happens in a basic DAO in ethereum?

I've had a look at the white paper but I fail to understand exactly what is happening on the code shown on the page. As far as I understand this example manages shareholders. But, is it possible to store organisation data somewhere? I (honestly)…
TheMightyLlama
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What is the DAO, and what is its connection with Ethereum

So the DAO was hacked due to a vulnerability in the way they wrote their smart contract https://blog.ethereum.org/2016/06/17/critical-update-re-dao-vulnerability/ The Ethereum plan is to fork the chain to specifically prevent the attacker from…
k kurokawa
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The Ethereum gas limit seems prohibitively low. Will it ever be raised? If so, when and how?

I'm having trouble publishing contracts and executing transactions due to the low gas limit (3.14 million gas ~0.15 ETH). How and when will the gas limit rise?
fivedogit
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Blockchain, smart-contracts and migration

I'm investigating what blockchain technology to use for basically intercompany asset management assets like laptops, shares, intellectual property and other, more complex contracts where party X agrees with Y on Z. Now, ethereum looks very suitable…
Cubedj
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eth says that I just mined something: now what?

I'm using eth to GPU mine for Ethereum. After running for 10 minutes, it said: i 23:58:32|gpuminer0 Mined #7a877124ΓǪ (parent: #d4e56740ΓǪ ) If this were Bitcoin, I'd go check it out on blockchain.info and also rejoice that I just got 25 BTC.…
Dane
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Trading ERC-20 based token

The 12th of February 2017 numerai gave 1M NMR to 12K users. NMR is based on ERC-20 (ethereum protocol). I was one of the lucky receivers. A few months later, crypto exchanges started trading with NMR and I sold my share. In my country, the…
Vingtoft
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Etherium based tokens

When we say certain crypto currency is based over etherium, for instance TRON, does it mean they have used etherium code from github and modified as per their use case? Or is it something completely different?
Safdar Mirza
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ETC vs ETH how do I know the difference?

How do I know if Ethereum is ETH or ETC, when the exchange just offers "Ethereum"
Mausie
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Are for-profit companies possible in Ethereum?

I am getting my head around DAO in Ethereum. In a magazine I read: In principle you could programme a taxi company that bought cars and paid drivers to run the cars to make a profit in order to buy more cars. [...] The point is that the management,…
luchonacho
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DAO Dividends In Ether?

A friend of mine told me that The DAO pays dividends in Ether. I can't find this anywhere, but assuming that it's true, how is this possible that it pays dividends if a person purchases The DAO through an exchange, but does not have an Ether…
user541852587
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eth says I have a balance of 35 ether - etherchain can't find my address

In the ethconsole I get the following: > web3.fromWei(web3.eth.getBalance(web3.eth.coinbase), "ether") 35' When I run web3.eth.coinbase and enter the resulting 0x00f24... address into https://www.etherchain.org/ , I get Error: Account '0x00f24...'…
Dane
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Is there a way to take out a loan on your Bitcoin like how Ethereum can be used as a CDP in the MakerDAO to get DAI?

I wanted to sell some BTC to pay some bills, but I also didn't want to lose out on the Bitcoin rise in the inevitable future. Ethereum has the ability to be used as a CDP (“collateralized debt position”) to get the stablecoin DAI which you can cash…
Patoshi パトシ
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bitcoin block size and etherenum gas limit

I understand that bitcoin has a fixed block size (1MB). On the other hand, Etherenum does not seem to have a fixed gas limit. (https://ethereum.stackexchange.com/questions/1106/is-there-a-limit-for-transaction-size/1110#1110) What is the rationale…
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