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
0answers
26 views

Ethereum rainbow chart

Is there an Ethereum rainbow chart showing cryptocurrency cycles, like how there is a Bitcoin rainbow chart? https://www.blockchaincenter.net/bitcoin-rainbow-chart/
0
votes
1answer
17 views

Reduce gas costs with longer block confirmation times (like in Bitcoin)

In Bitcoin, fees tend to decrease as you target longer block confirmation times. For example, a standard transaction with 1 input and 2 outputs has a fee of approx. $3.06 for confirmation within 6 ...
0
votes
0answers
16 views

Is minting gas through gastoken.io still efficient to reduce Ethereum gas costs?

A SE user suggested using https://gastoken.io to mint gas when fees are low in order to save on gas when fees are high. However, I'm wondering if there's any benefit of doing this today. According to ...
2
votes
1answer
23 views

Which Wallets Support Login With MetaMask Concept?

I'm building an exchange service where I have all users deposit ETH and ECR20 tokens to a single Ethereum address (In order to avoid complications of having to consolidate funds & paying extra gas ...
0
votes
1answer
16 views

Can a transaction hash be used to identify the sender of a payment?

A user suggested using a transaction hash as a way to track user deposits (especially for ECR20 tokens): The major issue arises when you start accepting erc-20 tokens as payment, in that case when ...
-4
votes
2answers
41 views

Is Ethereum actually something that exists, or is it just a maze of webpages full of nonsense? [closed]

I'm trying to be as polite as I can be, as I have nothing against Ethereum specifically. I'm very experienced with Bitcoin, but have never found any other "altcoin" to be worthy the time of ...
1
vote
1answer
23 views

29 Word Seed Phrase Recovery

around 2018-04-14 I opened an eth wallet, which I am positive was with MetaMask. I have found a file on my computer that contains a 29 word seed phrase. I saved this file and labeled it "Do not ...
1
vote
0answers
17 views

TX recieved from subscribtion but not in Tx pool

I am running local Geth and I subscribe to pending transactions like this : const subscription = web3.eth.subscribe('pendingTransactions', (err, res) => { if (err) console.error(err); }); ...
2
votes
1answer
78 views

How exactly are block rewards calculated in ethereum?

On some websites the block reward looks like this:2 + 0.9126 + 0.00257 + 0.06867 ETH Etherescan shows it like this:2 + txfees So, I think the block reward is a fix amount (2 in 2021) and tx fees. Or ...
0
votes
0answers
22 views

What is the rationale behind lower minimum deposit & deposit fees for ECR20 Tokens vs Ethereum? [closed]

While examining the fee structure on Kraken I noticed the following peculiar pattern: Ethereum: Deposit Minimum: 0.05 ETH (approx. $61.99 at time of posting) Deposit Fee: Variable on-chain fee to ...
2
votes
0answers
25 views

Exchange deposits using smart contracts and externally owned accounts

While researching how different exchanges handle user deposits, I noticed a stark contrast between several prominent exchanges. Kraken: Exchanges like Kraken use newly generated deposit addresses (no ...
0
votes
0answers
10 views

The Real Cost to Foward Transaction to EOA via Smart Contract?

I'm creating a smart contract that does the following: Checks that a userID parameter is included as data field OR that the last 4 zeros of the amount being sent is not equal to zero (i.e, 0....
1
vote
0answers
26 views

Recover Lost Funds from Botched ETH Deposit Without Access to Private Keys?

I'm using the wei approach (4 right-most zeros) as a marker to track user deposits on my site. In short, every user on the site is told to append a custom amount of "wei" to every deposit ...
0
votes
2answers
19 views

Etherscan API Get Balance - Decimals Not Showing In Response

Expected Use the Etherscan API to make a GET request for an ETH address' balance in order to receive a response providing the Ether token quantity representing all decimal places. Observed The ...
0
votes
0answers
17 views

Is it possible for an attacker to exploit contracts that rely on incoming “msg.value”?

I am developing an eth2.0 fuzzer for my masters that has produced some interesting crashes - if these crashes are legitimate I believe I may have found a new vulnerability - otherwise, I still have a ...
0
votes
0answers
15 views

How to recover ethereum from https://ethereumwallet.com/beta/index.html [closed]

About 5 years ago I used https://ethereumwallet.com/beta/index.html as an ether online wallet. But now I can't access this site. The ethereum address still exists and has ether. Any option to recover ...
0
votes
1answer
11 views

Enum Error while following along a tutorial

I was going through the tutorial from DappUniversity on Youtube when I stumbled across with my enum pragma solidity ^0.6.0; contract HotelRoom { address payable public owner; /*state variable, the ...
0
votes
1answer
9 views

how to move ethereum from ETHERSCAN to SHAKEPAY [closed]

i have a problem, i tried to move ethereum from BINANCE to SHAKEPAY but somehow they ended up at ETHERSCAN.... can someone tell me how can i move them at my wallet at shakepay or at binance ?
0
votes
0answers
19 views

Light, fast or full syncing for solo mining Ethereum? [duplicate]

I would like to try my luck to solo-mine some ETH. Full syncing is out of range, regarding downloadtime and diskspace. So, that´s the question: Is it enoght to light syncing for solo-mining?
0
votes
1answer
29 views

Is it possible to predefine 'msg.value' when calling a function in an external contract?

I am new to developing smart contracts and have had some trouble trying to troubleshoot a solution to this problem. I have two smart contracts... Contract X: (The bank - Balance 100 ETH) contract X { ...
0
votes
1answer
22 views

Get error when I want to withdraw ethers from my contract

I have a contract in which, I want to withdraw my ethers using a function. It works fine in remix, but in web3 It does not work and throws VM Exception while processing transaction: invalid opcode&...
1
vote
0answers
34 views

Why ETH has value and what is the floor for it?

I've been happily on my journey down the crypto rabbit hole over the last few months of quarantine. I've personally bought into the narrative that Bitcoin excels as a digital store of value, and as ...
0
votes
0answers
16 views

How to get balance a wallet has in a Uniswap pair

I'm trying to get the balance of my wallet in a Uniswap pair. I have found how to get the initial balance when I first added liquidity using https://api.thegraph.com/subgraphs/name/uniswap/uniswap-v2 ...
0
votes
1answer
10 views

Why is sending ETH from multiple accounts in a single transaction deemed a “security hole”?

A user on Ethereum SE posted the following As you noticed, there is no way to send a single from multiple addresses. There is always just one sender. For Ether transfers the Ether value is always ...
0
votes
1answer
9 views

Send Multiple ECR20 Tokens from a Single ETH Address in One Transaction?

Is it possible to send multiple ECR20 tokens (i.e, USDT and USDC) from a single Ethereum address (EOA) to another address (EOA) in a single transaction (either with or without a smart contract)? If ...
0
votes
1answer
27 views

Is 21,000 Gas Limit Fixed Only for Ethereum?

I was reading a comment on another post on Ethereum SE and found the following statement: 21,000 is for sending Ether, not anything else. The user suggested to "just set it to a large enough ...
0
votes
1answer
40 views

Recovering ETH after sending to wrong address

I'm struggling to find an answer to this. I have mistakenly sent all my ETH to a smart contract (used as a redemption address only for TaaS token - 0xa6b5e8df6553969de6006edb3a87ff5226f4a115). I got a ...
1
vote
1answer
31 views

Pros & Cons of Using the “wei” Method to Track User Deposits in Ethereum

With Ethereum it's notoriously difficult to accept deposits from many users due high operational costs for making new ETH addresses. On the other hand, if all users of a service send ETH to one ...
0
votes
2answers
58 views

Mining Eth with a pathetic laptop

I am a newbie in mining, I have a couple of shitty laptops around 8-16gb ram and an Intel graphics card. I don't pay for the electricity and don't really care if the laptop dies. I tried to search ...
0
votes
0answers
26 views

Can someone help me understand what this address is? It says its private but has a lot of weird transactions. I am trying to track a scammer

I am tracking a scammer and I need to figure something out, just to be sure. For example https://bloxy.info/ is telling me this address 0xc94ebb328ac25b95db0e0aa968371885fa516215 is a a regular ...
2
votes
1answer
120 views

Calculating Ethereum Gas Fees

How are gas fees calculated in account based model coins like ETH? Let's say I own 10 ETH addresses with 0 starting balance. I receive 0.1 ETH payment from 10 people - each one sending a payment of 0....
0
votes
2answers
105 views

Got hacked on metamask. Which wallet has the best security to trade on Uniswap?

So I got hacked on Metamask and all the funds lost. The hacker somehow connected to my google session and was able to get to the google drive files where I had couple of sensitive data. This was my ...
0
votes
0answers
34 views

How to identify ether payments from an exchange?

I am building an application that accepts payments from its users. Nowadays, only users with a wallet can make withdraws to a smart contract address(mine). This is because each user has a single and ...
0
votes
0answers
19 views

Consolidating “dust transactions” in account-based coins like Ethereum?

Suppose I have a marketplace where 100 buyers deposit 1 ETH each into 100 unique addresses and I know I will end up sending all 100 ETH to 1 vendor. Since the coins are originating from 100 ETH ...
1
vote
1answer
19 views

Maximum GAS price

When I launch an Ethereum transaction, I have to choose how much WEI I am able to pay for one GAS. This is a "bid" concept: If my transaction is very important and if I want to run it ...
0
votes
0answers
15 views

Issue with Solidity Payable function?

I get error when I try to call this function AvailableEnergyAdvert with energy_produced greater value > 1. pragma solidity ^0.6.0; import "https://github.com/OpenZeppelin/openzeppelin-...
0
votes
1answer
14 views

How to identify whether a coin or token runs on Ethereum?

Hundreds of coins and tokens are listed on coinmarketcap.com, but how can you tell which ones are Ethereum-based or Ethereum-dependent? Hundreds of them obviously are. Is it only through one's own ...
0
votes
0answers
25 views

Regarding shares in eth

I'm completely new to the "mining world" and started reading about this recently. I thought i could mine when not utilizing my PC since i've got a decent mh/s speed and elecrity rates here ...
0
votes
0answers
14 views

Extract all blocks data from etherchain into a csv file

i want to extract data from etherscan into a csv file or format. wanted to extract all blocks mined yet and transactions done till yet
1
vote
1answer
28 views

when msg.sender is the owner?

how do I know if the msg.sender is the owner (the person that deployed) of the contract or a random address that interacted with the contract? in this case for example: address payable owner = ...
0
votes
0answers
26 views

I need some help to recover lost ether on myetherwallet [duplicate]

a couple of years ago I transfered some eth from Binance to myetherwallet to benefit from EoS and KeOs ( with hindsight I shouldn't have done as binance covered them) - notwithstanding I am not a ...
0
votes
0answers
15 views

If you accidently set a very HIGH gas limit to purchase a smart contract for ETH can it be changed?

Ex. Gas limit was accidentally set to 5,000,000 & now when Trying to customize it keeps auto-populating to that causing me an INSANE gas fee of over $400. I don't want to cancel because I don't ...
0
votes
0answers
28 views

Get all transfers of a token contract from etherscan API with python

I am trying to pull out from etherscan api all token transfer from a particular token contract. Currently, I can pull data by manually going to etherscan token contract page - for ex cvc coin: https://...
0
votes
1answer
19 views

how to pass address(0x0) to remix?

I want my users call a function and send some deposit to contract. I want them to chose whether they want to send ETH or ERC20 tokens. I have my code and I see no flaw in it. but how can I pass ...
0
votes
0answers
15 views

How to find out what happened with a contract transaction

I have a question regarding one transaction which happened at the 17th of January 2018: https://etherscan.io/tx/0xabe5ac6176e1096bf4fbfa983cb8b04262ae1d57daf94ebb1668b5d45e3145f4 It should be ...
1
vote
1answer
102 views

Recovering private key from keystore file

Recently I came across my old keystore file from the original Ethereum Wallet that I used back in 2017. Unfortunately I cannot find the private key or password for that wallet anymore, big problem of ...
0
votes
0answers
30 views

Rookie Question on ETH Transferred 2+ Years Ago

I was active a few years ago but haven't touched my crypto for 2 years+. I had ETH on Coinbase and then transferred it to my Ledger Nano S. I accessed by Ledger (I have my private key and everything) ...
1
vote
1answer
95 views

THETA token sent to contract address instead of correct wallet address

By mistake, I sent my THETA token to the contract address instead of my correct wallet address. This is the transaction link on Etherscan https://etherscan.io/tx/...
0
votes
1answer
26 views

Ethereum Wallet Backup

Some time ago, me and a friend created a Ethereum Wallet and purchased some ETH. We created the wallet on my Computer but because of some issues, I needed to reinstall windows. I thought I copied all ...
1
vote
0answers
17 views

smart contract Thether balanceOf method returns 0x

i used web3j-java call Tether contract method balanceOf(the server node is mine , and on ether mainnet),my address has 3USDT,but i call balanceOf , the node returns me 0x as the balance value,it is ...

1
2 3 4 5
30