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.

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1answer
318 views

How do I securely store different CryptoCurrencies?

I may be seen as a newcomer and and a non-tech-savy person for asking this, but after serveral hours combing the internet, I now have to admit my defeat and ask the question instead of just finding ...
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1answer
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What database engine does Bitcoin and other top altcoins use?

I'm curious to what database engine does Bitcoin and other altcoins use to store their blockchain data. Do they all support sql queries or is it something else? The main ones I'd like to know are: ...
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Better Crypto Currency for trading [closed]

Can anyone suggest me which crypto currency is better for trading? Is it Bitcoin or Ethereum? Prices in USD as of 21/08/2017 and time 18:03 (UTC+05:30): Bitcoin = $4041.53 or Ethereum = $325.76
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Crypto Mining with PC

I have PC - i7-6700K CPU @ 4.00GHz & graphic: Intel Corporation HD Graphics 530. My Os is Ubuntu. How many Mh/s i could receive for Ethereum? Let's assume the current is free.
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525 views

Random election proof of stake

There are currently many cryptocurrencies based on PoS (Proof of Stake). All these PoS algorithms differ from each other. Some or maybe all of them (I don't know) implement some kind of random ...
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1answer
209 views

Which wallet can I use to store all my cryptocurrencies ?

I'm new to cryptocurrencies and I would like to store all my currencies (I read here and there that it is not safe to store everything on Coinbase). So I tried Coinomi which seems quite good but is ...
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1answer
80 views

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 ...
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3answers
2k views

Is there any address monitoring application with support for multiple cryptocurrencies? [closed]

This would be beneficial for all long-term investors who have many different cryptocurrencies in their portfolio and don't usually perform any transactions. Simply just to check whether your money are ...
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1answer
2k views

Transfer Bitcoin from between two different wallets

In my application i want to received payment from different user. Each user may use different wallets like mycelium, jaxx and many more... My application's wallet is in coinbase, is it possible to ...
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3answers
1k views

How to store private data in blockchain and smart contract

Following my previous question on this topic Is there a way to store and share a private key through blockchain?, I might have a solution but I would like to improve the process. Image that A is the ...
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1answer
838 views

Why are Virtual Machines used in Ethereum?

I'm wondering why the Ethereum Virtual Machine (EVM) is used? What if they didn't use it? Why don't we have them in Bitcoin?
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How does ENS prevent frontrunning attacks?

Namecoin uses commitments to hide the domain. ENS uses simple hash, which is not hiding.
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644 views

How was Ethereum hard fork's replay attack was handled?

On etherum, there was a hard fork which resulted in ETH and ETC. My reading indicates that it suffered problem of replay-attack. Question: How was this problem resolved for Ethereum? In my ...
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270 views

Fastest way to transfer funds from Ethereum address to Bitcoin address [closed]

I have an Ethereum address with some Ether in it, and I would like to transfer some of those funds to a Bitcoin address. I am wondering what's the quickest and most painless way to perform the token ...
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1answer
1k views

Why iota coin do not support smart-contracts?

I thought that Iota-coin have a lot of common with Ethereum, but I hae found that it do not have support of smart-contracts. I googled about what was there reason of do not implement it (I really ...
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1answer
508 views

Bittrex Market History Confusion

So I recently made a very small test order of Digix DAO in the Ethereum market (Using bittrex), and I noticed that it showed up in the Market History section. It looked a little like this (NOT EXACT) ...
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1answer
194 views

Can I Hook Up RX-460 to Regular PCI Slot via PCI-E Riser

I have motherboard with 3 Regular PCI slots beside 3 PCI-Express slots. (https://www.asus.com/Motherboards/M4A88TDV_EVOUSB3/specifications/) Can I Hook Up 3 RX-460 to Regular 3 PCI Slot via PCI-E ...
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Real bitcoin buying versus forex speculation [closed]

so I had a discussion with the colleges today and I would that my arguments would be verified here. Basically the question is what are the differences between buying and selling real cryptocurrencies ...
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1answer
2k views

Need Guide: what is the hashrate for ZOTAC P106-100 6GB GDDR5? [closed]

One vendor is offering 20 GPUs and each $224.00 . Is it good card for mining ETH and what is the best hash for this? Please let me know your experiences. Is it worth to buy for ETH or other coins?
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491 views

Can someone show me an example rootstock smart contract that is the equivalent of an Ethereum Smart Contract?

Coming from Ethereum, is there an example rootstock smart contract code that is the equivalent of an Ethereum smart contract code?
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1answer
1k views

Is there a pro vs con chart comparing Bitcoin's Rootstock vs Ethereum Smart Contract system?

Is there a comparison chart where one compares Rootstock to Ethereum? What are the pros/cons of each system?
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2k views

When are you charged a withdraw fee?

I'm a bitcoin newbie and think that I am missing something. I'm based in Australia although I'm not sure if that matters. I would like to buy and hold for an extended period some bitcoin and ether. ...
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1answer
298 views

What is the status of smart contracts in bitcoin?

Are contracts described here already available for use? This source claims that "Ethereum style contracts" will be available in June. Is this correct? How are Ethereum style contracts different from ...
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3answers
7k views

How much can I earn with AntMiner S7 miner

I have started to learn about blockchain technologies, BTC and other crypto-currencies and right now interested in mining. I know that mining of BTC is not very profitable right now, but other ...
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2answers
216 views

Problem of colored-coins/assets and other coins with a parent/child relationship of paying for fees with only the parent currency

I've looked into building out my own coin, but it was best to just piggy back on top of an existing blockchain like how colored coins and counterparty is doing it. But when going on this route, I run ...
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1answer
105 views

Relative licensing restrictions of Ethereum and other projects- Open Source?

Is Ethereum open source? I've heard different things from different people. Stephan Tual has written: "Everything at Ethereum, including our website, our tools, our whitepapers and of course our ...
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1answer
844 views

Does bitcoin have the potential to be subject to a hard fork where miners are forced to choose which fork they will accept, like Etherum?

Some background (Taken from Quartz): Ethereum is similar to bitcoin, but it also supports smart contracts, agreements written in computer code that execute automatically when conditions are met....
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2k views

Can blockchain be used for auditing?

It has been argued that with the use of blockchain in auditing, the transaction and the record of the transaction will be the same thing. What does this mean?
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1k views

How does Bitcoin Gigahashes Convert to Ethereum Megahashes?

I bought 6 XFX Rx 480 8GB graphics cards and I estimate they will do 25-30 megahashes with Ethereum. When looking on Amazon for other rig ideas I was reminded that they also sell Erupters. The ...
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1answer
241 views

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 ...
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1answer
353 views

Smart contracts in bitcoin

Is it possible in bitcoin to start a smart contract preloaded with some amount of money. And if some other user is ready to pay to the smart contract a certain amount of money, the smart contract ...
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1answer
283 views

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 ...
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91 views

Whisper Implementation in Bitcoin

Is there some kind of implementation in bitcoin to communicate between nodes, which is similar to the Whisper Communication in Ethereum ? Whisper, is a communication protocol for DApps to communicate ...
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2answers
489 views

What are the differences (and value adds) among all the different Crypto Currencies?

This website lists hundreds of crypto currencies. Some whimsical, others with a unique value. Is there a catalog, or diff between all the implementations that highlights innovation, or a unique use ...
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1answer
431 views

Does ethereum run on the bitcoin blockchain?

If not, what is the relationship, if any, between Ethereum and Bitcoin and/or the Bitcoin blockchain?
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275 views

Blockchain, smart-contracts and migration [closed]

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 ...
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914 views

Can Ethereum support compressed secp256k1 public keys to compute Keccak addresses? [closed]

Starting from a private key, a working functional example provides details for how an Ethereum address can be calculated from an uncompressed secp256k1 elliptic curve public key. This functional ...
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1answer
97 views

I tried to use bitcoin to buy ethereum and failed, what will happen now?

I tried to use some at the shifty exchange in the ethereum app, just for research. I sent money to the provided payment adress, but I think I included a to small fee. My payment is now uncofirmed and ...
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4answers
345 views

Is it true that colored coins or digital assets (counterparty / ethereum / nxt assets / etc.) have an issue of paying fees?

I'm looking to setup my own digital asset or coin on either counterparty or nxt assets or ethereum to distribute to my loyal customers, but I noticed that even if I created an account for my customers,...
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1answer
321 views

Are there Ethereum API wrappers? [closed]

I'm looking into developing some Go software on Ethereum and I'm wondering - are there any API wrappers around for Ethereum (something like BTCSuite's BTCRPCClient is for Bitcoin)? I know there is a ...
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1answer
1k views

Is Ethereum essentially Bitcoin with Turing-complete Script?

Is Ethereum essentially Bitcoin with a Turing-complete scripting language and, if I understand correctly, where the script to be executed (not its hash) is placed in the Ethereum blockchain? If so, ...
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2answers
592 views

Ethereum: Cannot use master password on Ethereum wallet

Ethereum. I love the ideas behind it and it's exciting and such... but damn if this isn't the most user unfriendly thing I've ever seen?! So a while ago, with a view to begin mining ETH on my GPU, I ...
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3answers
9k views

What is the approach to calculate an Ethereum address from a 256 bit private key?

For a given private key generated by MyEtherWallet, I would like to see I have the tools to independently arrive at similar results. Wrote a wrapper around Keccak to accept both hexadecimal and ...
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481 views

eth says I have a balance of 35 ether - etherchain can't find my address [closed]

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....
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115 views

eth says that I just mined something: now what? [closed]

I'm using eth to GPU mine for Ethereum. After running for 10 minutes, it said: i 23:58:32|gpuminer0 Mined #7a877124… (parent: #d4e56740… ) If this were Bitcoin, I'd go check it out on ...
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0answers
63 views

Is it cheaper to store data across multiple instances of the same contract? [closed]

From what I understand, code is deduplicated on the Ethereum blockchain by storing pointers in new blocks to blocks containing code that is being reused in the new block. If that's the case: Is it ...
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1answer
252 views

Withdrawing Ether from Cryptsy to geth

I am trying to withdraw Ethers from Cryptsy to geth account. Cryptsy says address, where I enter my account id, is invalid. Do I need to create a separate addresses besides running geth account new to ...
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3answers
362 views

Ethereum - contract

I'm not sure whether people answers question on Ethereum here as well but just in case... Once my smart contract is active on the Ethereum, what prevents me from modifying the contract for my own ...
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745 views

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?
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1answer
353 views

Should I join a pool?

I've configured the large (8x) GPU image on AWS at 2.60/hour. I ran it goes few hours after setup and mined nothing. This was my first foray into mining. Given this setup, am I better placed to join ...