Questions tagged [ethereum-classic]
Ethereum Classic is the chain where the DAO rescue hardfork did not occur. This tag is for questions dealing with the differences between the chains, usage of multiple chains, as well as cross-chain interaction.
272
questions
18
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6
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send ethers from one contract to another
I am wondering how can I have ethers in my contract. I have 2 contracts associated with different accounts.
I want to send ethers from one contract to another but how do I have ethers in my contract ...
- 191
16
votes
2
answers
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How do I convert my The DAO tokens into ethers on the Ethereum Classic chain?
According to Whitehat Withdrawal contract - Update and Next Steps and Whitehat Withdrawal contract - Last update before deployment, the Goodies will be deploying the withdrawal contracts whetcwithdraw....
- 40.2k
15
votes
2
answers
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How to conditionally send ethers to another account post-hard-fork to protect yourself from replay attacks
The DAO contract was attacked on 17th June 2016 where the attacker drained about USD 50 million worth of ethers using a recursive call vulnerability in The DAO contract code.
The attacker drained ...
- 40.2k
11
votes
3
answers
3k
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How to prevent a replay attack between two competing chains?
After the recent hardfork we have a winning chain and a much shorter losing chain left. However, if you are pro or agains the fork, you could still mine and use one chain or the other.
Now, there is ...
- 32.8k
10
votes
2
answers
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About Abi Encoder V2
I came across the following code and found the term "pragma experimental ABIEncoderV2". Can anybody be specific in telling what this actually means?
//pragma solidity ^0.5.2;
pragma experimental ...
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9
votes
2
answers
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How does Ethereum Classic differ from Ethereum?
What are the technical differences between Ethereum Classic and Ethereum?
9
votes
1
answer
2k
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What are the balances of The DAO and it's child DAOs on the Ethereum Classic chain?
At the hard-fork block #1,920,000, the ETH balance from The DAO and it's child DAOs (which includes the balance from the extraBalance account) were transferred into the Withdrawal contract.
What are ...
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8
votes
4
answers
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I get error couldn't find module 'ethereumjs-wallet/hdkey'
I was running this code deploy.js
const HDWalletProvider = require('truffle-hdwallet-provider');
const Web3 = require('web3');
const { interface, bytecode } = require('./compile');
const provider = ...
- 353
8
votes
1
answer
876
views
Can I use web3 with Ethereum Classic?
I just learnt using web3 to interact with Ethereum.
Is there a similar library to web3 to work with Ethereum Classic?
Is there a testnet faucet?
Does it work with Parity?
Thanks in advance for your ...
- 241
7
votes
1
answer
9k
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ETH sent to ETC address
I accidentally sent ALL my ETH on ETC address :(
6 months of mining gone :(
I sent from one exchange to fresh address on another exchange, but on ETC ...
Is there ANY way to track those coins?
I'm ...
7
votes
2
answers
2k
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Does ETH and ETC uses the same network ID?
Can someone tell me what happen after the hardfork (due to DAO attack)? There are 2 ethereum cryptos after the fork, so there should be 2 different network. Are they using the same network ID? How do ...
- 447
7
votes
2
answers
3k
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How to configure parity to work with the ETC chain?
I have some ETC/DAO-C funds that I want to claim, so I'm interested in running a parity node to do this. How can I configure parity to follow the ETC chain?
- 1,909
7
votes
2
answers
733
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Are eth transactions still replayed on the etc chain?
I have read about EIP 155. I see that the main chain, test nets, and ETC were asked to implement EIP 155. If just ETH implemented EIP 155, wouldn't that have been enough to prevent ETC from being ...
- 163
6
votes
1
answer
715
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Post the DAO-fork, is there a double-spending problem?
If an account had ETH before the DAO-fork does the ETH now not exist on both the ETH and the ETC chains?
A Poloniex notice says "All users who had an Ethereum balance at the moment of the fork now ...
- 1,655
6
votes
1
answer
2k
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How to replay a transaction on classic?
I have looked to split and sell my etc and have successfully split with test transactions replaying on classic, however the main transaction has not replayed for 24 hours and I would like to force a ...
- 441
5
votes
2
answers
7k
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What's the formula to calculate the mining profitability for ETC?
I know there are calculators for mining profit, but I need to include the same thing in an app I'm building, what formula do they use for Ethereum Classic?
Also, can I use the same formula for other ...
- 93
5
votes
2
answers
2k
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How does Ethash work?
I've looked at the wiki in search of how the information about Ethash algorithm but I did not find the answer.
Where can I find detailed information about it or can someone explain it?
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5
votes
2
answers
4k
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Is there any GPU that has 100+ Mh/s?
After I browsed http://www.mininghwcomparison.com, I found some GPU that had a 100+ hashrate, to 250Mh/s. I checked many other sites, and I didn't see any GPU that goes over 50MH/s, so is this site ...
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5
votes
2
answers
4k
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Solidity compile Expected token Comma got 'Identifier'
I'm trying to compile a contract in the solidity browser compiler and get this error:
Expected token Comma got 'Identifier'
person.setRent(uint256 _rent);
What is the token Comma in ...
- 279
5
votes
1
answer
5k
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storage warning in solidity! [duplicate]
storage error is showing in line number 6 for string title,
If I add the storage keyword in between, how does it affect my contract?
Does it affect my byte code or gas consumption in later use.
The ...
5
votes
1
answer
383
views
ETC/ETH split still safe after October 18 2016 hardfork?
Does this Steemit solution still work in exactly the same manner as before the HF of October 18th? Do I need to wait for the second HF/ETC HF coming next week, or can I try splitting already (since ...
- 361
5
votes
0
answers
376
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Trying to send ETH from Mist Wallet to Poloniex, received ETC instead [closed]
I want to send both my ETC and ETH to Poloniex.
I have a basic understanding of the DAO fork and know nothing about programming. I googled something about a replay attack and using a split contract. ...
4
votes
2
answers
1k
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how to deal with race condition and execution times of a contract?
I'm a ethereum beginner. I can't understand some of its concept.
for example, a contract should be executed by everyone on the network as a way to verify a block.
what about synchronization among ...
- 213
4
votes
1
answer
1k
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How can I verify that my The DAO token balance is correct when the Goodies provide an ETC refund on the Ethereum Classic chain?
From the blog post The White Hats and DAO Wars: Behind the Scenes, the Goodies intend to:
develop the smart contracts that will be used to distribute ETC to the addresses holding DAO Tokens at block ...
- 40.2k
4
votes
1
answer
763
views
How many blocks were reversed with the DAO hard fork?
There are some facts regarding the DAO hack and the subsequent hard fork that can be found everywhere, e.g., that the hard fork happened at block height 1,920,000, that it was undertaken in an effort ...
- 145
4
votes
1
answer
76
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Where’s the equivalent of Yellow paper for Ethereum classic?
Ethereum classic performed changes never implemented on Ethereum like on mining. I do expect them to have their own paper for detailing this.
But it seems it’s not called the yellow paper…
Even on ...
- 961
4
votes
2
answers
1k
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Is there an api to get list of transactions from non forked blockchain / classic Ethereum
Now that the hard fork is complete, there are two blockchains - the forked one for ETH (at 1920000) and the original is for the ETC.
The etherscan.io provide an api to get list of transactions for ...
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4
votes
1
answer
455
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Using Ethereum Classic with web3.py
I successfully integrated Ethereum (ETH) in my product. Now, I want to integrate Ethereum Classic(ETC) in my product. I am using web3.py for ETH. Are there any documentations or libraries for ETC? How ...
- 185
4
votes
2
answers
4k
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What Is The Easiest Way To Split ETC from ETH in 2017
I am not very technical. I want to know if there is an easier way to split eth from etc without using the mist wallet 0.8.1 in 2017.
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4
votes
1
answer
433
views
What happened with the presale ether after the fork?
I have never accessed my presale ether. As I understand, a major fork occurred some time ago. I have some confusion regarding the current situation.
What will happen to my ether?
Do I get both ETC ...
- 41
4
votes
1
answer
469
views
Is Atomic swapping between ETH and ETC possible?
Wondering if cross chain atomic swapping between ETH and ETC without using poloniex, then the world can be merged in more cool way.
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4
votes
1
answer
203
views
Problem after withdrawal non hard fork ethereum
I have a problem, I successfully withdraw some ETC but when I tried another time to withdraw the rest I think I put in more ETC and I didn't receive anything and now when I try again to withdraw any ...
4
votes
0
answers
142
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what is a pseudorandom cache mentioned in ethereum yellow paper
in ethereum yellow paper it says:
"There exists a seed which can be computed for each
block by scanning through the block headers up until that
point. From the seed, one can compute a pseudorandom
...
- 43
4
votes
0
answers
485
views
How can I use a Presale JSON file to keep my ETH long-term in cold storage and sell my ETC seperately?
I received Ether during the Pre-sale in June 2014 and received a JSON file and have the password. I have never tried to access these funds. I found out that I should have ETC & ETH due to the hard-...
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3
votes
4
answers
2k
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Is there a list of Ethereum Classic block explorers?
Most Ethereum block explorers are only for Ethereum, but not Classic. Is there a list of Ethereum Classic explorers?
3
votes
2
answers
2k
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Eth address can't be used for mining
I'm trying to mine from my linux, but when I run the following command:
ethminer -F http://ethereumpool.co/?miner=4@ERroYPhmyUFMgPNRJEDNBlaBlaBla@Optional
I get error
JSON_PARSE_ERROR: The JSON-...
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3
votes
1
answer
180
views
Unable to understand how smart contracts work
I'm reading several articles about privacy in ethereum smart contracts but still I don't understand how everything in the smart contract is visible to anyone?
What does this mean?
- 115
3
votes
2
answers
2k
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How can I split my ETH and ETC if I have an account that made a transaction with the WithdrawDAO contract?
Let's say:
I own account A, which had a 100 ETH pre-DAO balance.
Pre-fork I sent 50 ETH from A -> DAO.
Post-fork I had 50 ETHF and 50 ETHC in A.
Post-fork I made a transaction with the WithdrawDAO ...
- 133
3
votes
1
answer
1k
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is it possible for a Ethereum miner to select transaction for processing based on from or to address?
It is commonly written everywhere that Ethereum miner selects transaction based on higher gas price first, so I want to know is it possible for minter to select transaction to process based on from/to ...
- 389
3
votes
2
answers
2k
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Excel sheet of difficulty hash of Ethereum
I am trying to acquire an excel spreadsheet or csv file with the daily or weekly historical difficulty rate of ETH or ETC. Can you please make a suggestion on how I can get that information?
Thanks ...
- 31
3
votes
1
answer
484
views
How do I pass enode URI's to --reserved-peers?
So I know I have to type in terminal:
parity -j --reserved-peers
But I do not know what to type after --reserved-peers, The actual peers I want to add are listed here. But I do not know if I am ...
- 163
3
votes
1
answer
1k
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How can I find ETC nodes (to pass their enode URI to --reserved-peers) because the classic chain no longer syncs through tor?
I was syncing the ETC chain on parity through tor. Everything worked fine. I got to block 3,000,001. Everything stopped, I realized there was a hardfork. I updated the software (ETH worked fine), but ...
- 163
3
votes
2
answers
4k
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How to make a GUI with Geth
Actually, I'm not even sure if what I'm asking is possible.
At the moment, I can run a script in the Geth Console which is creating contract in local.
I would like to create a simple interface with 2 ...
- 65
3
votes
1
answer
3k
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Ethereum-PHP Calling contract function with parameter
I'm not the author of Ethereum part but have to connect to using php. Choosen Ethereum-PHP package (https://github.com/digitaldonkey/ethereum-php). Have connection to ethereum and smart contract but ...
- 35
3
votes
2
answers
766
views
Solidity: UnimplementedFeatureError: Only in-memory reference type can be stored
I am getting the follow error with the contract below when I compile in remix and javascript. Also how do I fix it.
UnimplementedFeatureError: Only in-memory reference type can be
stored.
pragma ...
- 31
3
votes
1
answer
194
views
ReplaySafeSplit contract on Mist v0.8.10
I'm trying to split my ETH/ETC from a presale wallet in Mist v0.8.10. I've followed the original Steemit post on running the split contract yet when I go to run the contract it doesn't show a field to ...
- 31
3
votes
1
answer
367
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How it is possible to keep multiple copies of same transaction data at multiple nodes forever?
I have read about DApp "decentralized applications" & Blockchain but still I am unable to understand how multiple nodes can keep whole history of all transactions forever?
After some time when ...
- 133
3
votes
2
answers
1k
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Parity installed. How to convert to ethereum classic chain?
I have recently purchased some ETC (ethereum classic tokens). I wanted to stored them in Parity. I have installed the Parity (Homestead?-same). Then I tried to convert to ETC chain by CD>parity--...
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3
votes
1
answer
459
views
Is running an app on Ethereum Classic cheaper than on Ethereum?
ETC price is 1/10 that of ETH, so theoretically it could be cheaper to run an app on ETC instead of ETH. However, I don't see users switching to ETC in droves, which suggests that it might not be.
...
- 133
3
votes
1
answer
460
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Please Help! ReplaySafeSplit contract not working after sending too much ETH
I am hoping someone has a answer to what I think is a relatively simple question. I started splitting my ETC from ETH using the ReplaySafeSplit contract. Some test and smaller transactions worked fine,...
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