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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Looking for a generic wallet solution with focus on security [closed]
As above, I am looking for a coin agnostic wallet solution with all basic functionalities of a wallet, particularly multi-sig. Primary coin focus is on bitcoin, bitcoin cash, bitcoin gold, ethereum, ...
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How to create Ethereum brain address? [closed]
I have used bitaddress.org to create a brain wallet for my Bitcoin.
Now I would like to create a brain wallet for my Ethereum using Bitcoin Improvement Proposals (BIP) 32/39/44/49 technologies. Is ...
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Coinhive for bitcoin/ethereum
I know that CPU mining wouldn't pay for electricity bill, but what if some sort of CPU miner was deployed to a website? Similarly to CoinHive with Monero. Would such mining make sense?
I started ...
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Applying blockchain in telemedicine app involving 'video sessions with doctors' for more transparency
PS: there was no 'Blockchain' community so I'm posting the question here.
Hi,
I am very new to blockchain but understand the basic underlying concept of blockchain. I can understand application of ...
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HyperLedger Fabric from IBM is fork of Tangle or Etherium?
I read as if HL Fabric was the most interesting thing ever created on the use of blockchain, but when I read the documentation (very short) about Hyperledger Fabric I came across some coincidences.
...
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Are Ethereum Tokens issued in an ICO similar to stocks on a stock market? [closed]
Are Ethereum Tokens issued in an ICO similar to stocks on a stock market? In which ways are they similar, and in which ways are they not?
To give some background to my question. I just joined an ICO ...
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Who managed bitcoin and ethereum decision making? Who approves Bitcoin upgrades and forks?
To my knowledge in Bitcoin and Ethereum decision makings are decided by the miners and developers. I like to know who makes the final say on the approval of a change to Bitcoin/Ethereum code or ...
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Using NBitcoin or C# to derive Litecoin and Ethereum Addresses from Master HD Key [closed]
I am using NBitcoin, C# and the Bip44 standard to create an hdroot to derive child keys from. I then create keys that I want to use for Litecoin and Ethereum addresses by setting the proper 'coin_type'...
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Why Ethereum is growing in USD but decreasing in BTC?
Please explain to me why the ETH/BTC price is decreasing but ETH/USD price is increasing. How does that work? Why it costs less in bitcoins but more in USD?
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How many proof-of-work algorithm exists for crypto currencies?
How many proof-of-work algorithm exists for crypto currencies ? We know PoW in Bitcoin and Etherium are different. Is there any other algorithm used for crypto currencies ?
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Adding Nano S Ledger hardware wallet to Parity wallet [closed]
I used to have this here, but accidently told it to forget the contract. Now I want to add it back, but it doesn't show up. I have followed these steps:
https://github.com/paritytech/parity/wiki/...
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Cancelled: You need some ETH in the same address as your token to pay the gas to send it
I have a problem in exchanging my altcoins, when i tried to convert TokenCard to Ethereum it is showing the following message:
Cancelled: You need some ETH in the same address as your token to pay ...
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Why are other sell limit orders being filled before mine on exchanges like gdax?
If I place a sell limit order for ETH/BTC for 4 ETH at 0.07086, when there’s currently only 0.5 ETH on it. It becomes 4.5 ETH total. Then I see it start flashing up and down, up to 10, or 20, then ...
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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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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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Random election proof of stake [closed]
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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Relative licensing restrictions of Ethereum and other projects- Open Source? [closed]
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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UTXO model vs. account/balance model
I understand that Bitcoin uses unspent tx output and Ethereum account balance based. However, recently there are lots of discussions on that Bitcoin's UTXO database has become too big. Does this mean ...
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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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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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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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What is the DAO, and what is its connection with Ethereum [closed]
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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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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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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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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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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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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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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