We’re rewarding the question askers & reputations are being recalculated! Read more.

Questions tagged [ether]

Ether (ETH) is the main internal crypto-fuel of Ethereum and is used to pay transaction fees.

Filter by
Sorted by
Tagged with
0
votes
1answer
69 views

Account address in ethereum wallet already existed

My etherum got stolen today I have hosted my own ethereum fast node. The node wallet has multiple account. I have created a mini app with api to create new account(without passwords) for users, also ...
6
votes
1answer
1k views

My friend sent me a screenshot of a transaction hash, but when I search for it I find divergent data. What happened?

This is the transaction hash: 0x90e923ee01d9dfeb95ee176819eeec67d247fc6cb009c8cdc4d8ae1939e5ecc6 And this is the screenshot my friend sent me: If you check the hash in Etherscan, some informations ...
3
votes
2answers
300 views

how to setup a ethereum private blockchain?

Does anyone know how to set up a private blockchain in ethereum network? is that possible to run a private ethereum node? I have seen forking of public blockchain like EOS into a private blockchain.i ...
0
votes
1answer
39 views

Given no performance penalty for maximum tokens creation. Why most tokens are not created max?

Given the answer to this question here: Is there a performance penalty towards creating the maximum number of tokens with ERC-20 etc? Why are most tokens in circulation / used not created to their ...
0
votes
1answer
63 views

Pending Transaction from locked token

I tried to send locked EOS to Etherdelta, and the transaction been pending for almost 4 days now. MEW can't find the transaction so I'm unable to cancel it nor do anything else even with higher gas ...
2
votes
1answer
61 views

Trustless Inter-chain transaction with Bitcoin- are there any flaws?

Let's say that Alice wants to send Bob 1 BTC, and in return Bob will send Alice 1 ETH. Alice's Bitcoin address is BTC_A, and Alice's Ethereum address is ETH_A. Likewise, Bob owns addresses BTC_B and ...
2
votes
1answer
58 views

How do smart contracts deal with data that fluctuates?

In my limited understanding of smart contracts, I've read that every node on the Ethereum network must execute a smart contract to come to consensus. I'm guessing that not all these nodes execute the ...
1
vote
2answers
534 views

What is the “right” way to send Ether to multiple addresses?

I have seen this discussed here but didn't get a satisfactory answer. What is the recommended way to send ether to multiple recipients? One way that I have thought of is follows: Deploy a smart ...
1
vote
2answers
49 views

Get exchange volume or even price in a private network

I am creating a local private network for some testing purpose, just tested with sendTransaction and some others API. Now, i would like to trace the private network exchange volume, and also price ...
11
votes
3answers
4k views

are there “public” ethereum nodes? or any recommendations on hosting solutions?

I've always ran apps on Heroku. Just developed a smart contract and I need to check the blockchain from the app. Are there public nodes I can connect to to get the info I need to show on my app? If ...
1
vote
2answers
2k views

Bittrex using smart contract address to get funds [ ERC-20] deposit

This question is not Just specific to bittrex, but i wanna know it in general that can any exchange ask its user to deposit tokens to a smart contract? I have been using ETH since a long time, i have ...
2
votes
4answers
3k views

Getting notified after receiving tokens

Is there any way to get a notification(PN, Email etc.) when one receives ETH or tokens issued on ethereum?
0
votes
1answer
192 views

Connecting 2 ethereum swarm nodes

I have two geth nodes and I want to run 1 swarm node on each node. I made a boot node for the two swarm nodes to communicate with each other. I run the first swarm node with the following command ...
0
votes
0answers
168 views

Genearte error 'invalid sender' when doing send transaction using infura or roopsten

I am using following code to perform transaction web3 = Web3(HTTPProvider('https://ropsten.infura.io/{}'.format('XXXXXXXXXXXXXXXXX'))) print('https://ropsten.infura.io/{}'.format('XXXXXXXXXXXXXXXXXXX'...
0
votes
1answer
66 views

Is there any way to fix my mistake when setting up a Multisig wallet?

So I am an idiot... I know. But feel free to tell me I am. When I set up my Multisig wallet with gnosis I made a fatal error. I created a Rinkeby Test wallet. I did a test transaction and it all ...
0
votes
0answers
41 views

How to import Txhashes to ETH cold wallet?

I would like to import Txhashes to my cold ETH wallet. The tx's are done on a connected device and transferred securely via QR codes. I can do this with BTC in Electrum but have found no way of doing ...
0
votes
1answer
221 views

Rinkeby Ether faucet error [duplicate]

I got funded from the rinkeby faucet but it didn't show up in my wallet. Does anyone have an idea why the sync with the rinkeby blockchain stopped with just 218 remaining?
0
votes
0answers
49 views

could n't find ABI constructor in my input data

I have developed the solidity code and need to verify the smart contract but I could not find Constructor Arguments ABI-encoded check the screenshots, i have developed in testnet
0
votes
0answers
28 views

Error - received an error when i sent transaction

Error - received an error when i sent transaction but it seemed to go through no problem. a few mins later it came up insufficient funds. My account has a positive balance. receiving address of my ...
1
vote
1answer
32 views

Ethereum transaction fails in simultaneous calls

I am making two calls simultaneous call with a single wallet. First I am making a contract call then I am making a ether transaction call. The first call succeeds, but the next call fails. I got this ...
1
vote
1answer
190 views

My transaction is pending and it seems like doesnt execute the transaction at all?

I wanted to transfer ERC20 tokens from MEW to another ERC20 token wallet. It seems like not moving. Now my transaction is pending and it doesn't showing up in myetherwallet as a pending status. Can ...
0
votes
0answers
21 views

Can I send an ERC-20 token to my users even if though I have 0 ETH?

Let's say I have USDC erc-20 token and I want to send it to my user's ETH address. But I have 0 Eth. Can I send it? If not, what methods are there to bypass that requirement of having to always have ...
0
votes
1answer
53 views

solidity code warning in remix IDE

I am trying to create a smart contract using the but it is showing warning message in a string "Warning: Unused function parameter. Remove or comment out the variable name to silence this warning. ...
0
votes
1answer
28 views

Is it possible to have ERC20 token (A) own other ERC20 tokens (X, Y, Z)

I'm building a DAPP, where a user has one 'parent' ERC20 token and several other 'child' ERC20 tokens. So what I want is .... To have a parent token A, and that token owns the tokens X, Y and Z. In ...
0
votes
1answer
261 views

Etherscan “Write Contract” Tab - what is it for?

What is the purpose of the Write Contract Tab in Etherscan? For example, if you look up the QTUM Token Contract on Etherscan (https://bit.ly/2IsddkT) and then tap on the Write Contract TAB, you have ...
0
votes
2answers
103 views

Error converting wei using promises in NodeJS

I am running this code on NodeJS application: let destinationBalanceWei = web3.eth.getBalance(process.env.DESTINATION_WALLET_ADDRESS).then(result => result.toString()) let destinationBalance = ...
0
votes
1answer
116 views

ParsedContract.sol:1:17: ParserError: Token incompatible with Solidity parser as part of pragma directive

Code : git clone https://github.com/dappuniversity/election https://github.com/dappuniversity/election/tree/2019_update Errors faced : Commands: Compile: truffle compile Migrate: ...
0
votes
1answer
106 views

How to create trueUSD token to my eth address [closed]

I am newbee about smart contract and eth tokens. I have created an eth account by: let account = web3Client.eth.accounts.create() I have my account details. I need to add some true usd token to eth ...
-2
votes
2answers
158 views

How to check ETH contract deposit? [closed]

I want to check ETH contract deposit. ETH contract deposit : (https://etherscan.io/tx/0xc4ae4e2444e91b02633cc771468585c954cc444e300ddceb659776287a4bdd39) { "blockHash": "...
0
votes
1answer
160 views

Using web3js apis for ethereum transactions

I want to use Web3.js APIs to create an Ethereum transaction from an address (not a smart contract) to another address using sendTransaction method (https://web3js.readthedocs.io/en/1.0/web3-eth.html#...
0
votes
2answers
155 views

What is preventing double spending Ether on a smart contract : how does a contract sends value/Ether to an other address?

When someone sends Ether, he/she use his private key matching address to sign the transaction. The private key not being part of the ledger, nobody can draw the fund of the account which sent money. ...
1
vote
1answer
56 views

How to use own custom token instead of gas price in ether? [duplicate]

I want to make my token and want that the token should be used as gas price. Is that possible,if yes please guide me for the same.
0
votes
0answers
69 views

Dose not sync Ethereum main net

I have wont start go-ethereum full node on my server. when i have start with ./geth --rinkeby --rpc --ws console started sync process Ok. But when i wont start with mannet ./geth --rpc --ws ...
0
votes
1answer
30 views

Can we pass some verification values from web to solidity contract?

Is there a way we can pass some value checks from web to solidity contract Just for example if we want to make sure, the person who is calling contract function is present on our website and not suing ...
0
votes
1answer
163 views

User ether.js mnemonic for bitcoin

I'm using Ether.js for my react native app to create mnemonic. i want use Wallet.fromMnemonic(code, path) to get key pairs but when i send bitcoin Derivation Path i get and ethereum private key which ...
0
votes
1answer
33 views

Store different numbers in Blockchain

pragma solidity ^0.4.24; contract Count { uint256 storeddata; function set(uint256 x) public { storeddata = x; } function get() public view returns(uint256) { return ...
1
vote
2answers
55 views

How to use function arguments of payable function for require statement?

function createCampaign(uint deposit, address ll) public payable{ dpst = deposit; require(msg.value > (40*dpst)/100 wei); address newCampaign = address((new Campaign).value(msg.value)(...
2
votes
2answers
102 views

What is the unit used when using the SetBalance() function of the state package?

Maybe I missed it, but can't seem to find it anywhere. Is the unit used in Gwei or in Eth? For example when writing : stateDb, err := state.New(rootHash, db) if err!=nil{ return err } addressA :...
0
votes
1answer
166 views

Sent SALT tokens to Cindicator (CND) contract address by mistake

I sent SALT tokens to Cindicator (CND) contract address by mistake. Is it possible to recover the tokens. Below is the transaction hash ...
1
vote
0answers
76 views

My code compiles on remix.ethereum.org but not on etherscan.io please help! [closed]

I get this error " ParserError: Function, variable, struct or modifier declaration expected. function transferFrom(address _from, address _to, uint _value) public returns (bool) ^ " everytime ...
0
votes
1answer
31 views

creating instance of contract trough a factory contract! Problems with balance!

hopefully someone can help me with my question. I have a factory to create an instance of a dealContract. Everything works except one thing. I cant send wei to the created instance, so lets see the ...
0
votes
1answer
114 views

Which smart contract should I use to wrap Eth [closed]

I need Weth for my dapp. So I looked at how AirSwap converts ETH to Weth. On the Rinkeby testnet, AirSwap calls this contract and uses the "deposit" function. I see from the code how this would work. ...
1
vote
1answer
302 views

Solidity compilation issue : Function overload clash during conversion to external types for arguments

I am new to solidity trying to compile the code which was an old example running good with old compiler. When I tried to compile the same in remix with latest compiler, I am getting the below issue. ...
0
votes
1answer
29 views

Ethers in a light node

Since a light node makes transactions from a connected full node, does a light node need ethers to make transactions or it uses the ethers from the full node?
0
votes
1answer
174 views

Swapped BTC for ETH using Bity.com en MEW but lost funds [closed]

I used bity.com service to convert 0.2 BTC for ETH and bity did not deliver my ETH, is this a scam? This is the confirmation message i got on MEW: Your TX has been broadcast to the network. It is ...
0
votes
0answers
43 views

Issue in understanding Crowsale in the ICO contract

I want to create a token and run an ICO but all this without the function of crowdsale and minting. It want it to be a token which has a strict initial suplly (exmpl 1M) and without the funtion of ...
2
votes
1answer
463 views

Simple smart contracts to make a bet [closed]

I would like to create a simple smart contract between me and a couple of friends (basically, I'm putting money on the line and betting them that I will do something that they don't think I'll do.) ...
3
votes
1answer
182 views

What is the shared nibble of this extension node?

I have an extension node here: Key: 000b17906abb9f83c5e190bc3d0bed212e66bf44d99997c53c2071e1413194b6 Value: [ 3866a6d45a815576000da23c1a017179233e9d6437806aef7c2264588739d0, ...
1
vote
4answers
2k views

How do I get all my wallet balance

How do I get all my wallet balance? I already have a very large number of wallet addresses, and I need to know the balance.and I want to know the number of addresses
2
votes
3answers
558 views

accepting ether in a smart contract

I want to create a simple smart contract for registration of users to a competition where when users can pay to contract and 2 ethers will deduct from his account. But when I'm trying to do so on my ...