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.

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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 ...
BokkyPooBah's user avatar
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16 votes
2 answers
10k views

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....
BokkyPooBah's user avatar
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11 votes
3 answers
3k views

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 ...
q9f's user avatar
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10 votes
2 answers
10k views

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 ...
Sourav Kumar's user avatar
18 votes
6 answers
37k views

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 ...
Pawan's user avatar
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7 votes
1 answer
9k views

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 ...
bojan pavkovic's user avatar
0 votes
1 answer
903 views

Sent transaction between ETH and ETC accounts

Halp! I sent a transaction between an ETH account and an ETC account by accident! How can I recover the ether?
lungj's user avatar
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4 votes
1 answer
1k views

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 ...
BokkyPooBah's user avatar
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1 vote
1 answer
8k views

I sent My ETC to my ETH address

I've sent a mistake ETC from ETH address from poloniex. How do i do now. This is my transaction (this is a fresh address) http://gastracker.io/tx/...
Luan Nguyen's user avatar
9 votes
2 answers
1k views

How does Ethereum Classic differ from Ethereum?

What are the technical differences between Ethereum Classic and Ethereum?
6 votes
1 answer
715 views

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 ...
Alan Wunsche's user avatar
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5 votes
2 answers
7k views

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 ...
Fyde's user avatar
  • 93
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 ...
Dragos Stefan's user avatar
3 votes
2 answers
2k views

I mistakenly sent ETH from online wallet to ETC hardware wallet address

I mistakenly sent ETH from my online wallet to my ETC hardware (Ledger Nano S) wallet address. Is there any possibility of recovery? And if yes, how? Thanks and kindest regards
Tottigol's user avatar
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?
bunjee's user avatar
  • 115
0 votes
1 answer
2k views

Information about Apply mining pool rewards ERC-20 Smart Contract [closed]

I was contacted from a girl of Singapore,she told me to join a website,with 1k of buying USDT erc-20,every day I withdraw 30 dollar,but today I accept this partecipation for the claim the reward but ...
Rey's user avatar
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9 votes
1 answer
2k views

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 ...
BokkyPooBah's user avatar
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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 ...
Eduardo's user avatar
  • 241
7 votes
2 answers
2k views

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 ...
Thomas's user avatar
  • 447
4 votes
2 answers
1k views

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 ...
Bill Yan's user avatar
  • 213
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 ...
typeduke's user avatar
  • 145
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 ...
Guy1979's user avatar
  • 31
3 votes
1 answer
1k views

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 ...
tod87's user avatar
  • 163
2 votes
1 answer
673 views

When will the Baddies have access to the hacked funds on the Ethereum Classic chain?

The Baddies drained 3641694.241898506992612606 ETH via The DAO's child DAO #59. When will the Baddies have access to the hacked funds on the Ethereum Classic chain? See also: Which split proposal ...
BokkyPooBah's user avatar
  • 40.2k
2 votes
2 answers
4k views

How do I sync the Ethereum Wallet and/or geth to the Ethereum Classic chain without affecting my hard-forked Ethereum chain?

I normally run the Ethereum Wallet and geth on the hard-forked chain. For The DAO ETC withdrawal, I would also like to sync with the Ethereum Classic chain. How do I sync the Ethereum Wallet and/or ...
BokkyPooBah's user avatar
  • 40.2k
2 votes
2 answers
1k views

How many nodes are supporting Ethereum Classic?

To avoid high fees, I am considering deployment of Smart Contracts on Ethereum Classic (around 20 fold cheaper than ETH) but a concern is about network soundness and security. So I was wondering how ...
Juan Ignacio Pérez Sacristán's user avatar
2 votes
1 answer
609 views

What's happening within child DAO #59 on the ETC chain?

From What are the balances of The DAO and it's child DAOs on the Ethereum Classic chain? we know that the baddies have drained 3641694.241898506992612606 ETH from child DAO #59. What is happening ...
BokkyPooBah's user avatar
  • 40.2k
2 votes
1 answer
323 views

How to modify the gasLimit of the private block chain on the console

as the title,How to modify the "gasLimit" of the private block chain on the console?
mike's user avatar
  • 21
1 vote
1 answer
605 views

Sent ETC from Jaxx to Coinbase ETH wallet accidently [closed]

I accidently sent ETC to an ETH wallet. Sent ETH from Jaxx to a Coinbase ETH wallet. ETC not appearing now on coinbase because I sent it to an ETH address. Please can you help me with this? I am ...
Narendra Dabasia's user avatar
1 vote
1 answer
1k views

Fatal: Error starting protocol stack: missing block number for head header hash

I didn't check on the running Geth instance and when I executed a function that logs everything in the Blockchain, I had an error that the port I was listening to wasn't responding. I figured out that ...
Jessie James Suarez's user avatar
0 votes
1 answer
80 views

Is there a performance penalty towards creating the maximum number of tokens with ERC-20 etc?

I saw this link: Max possible ERC20 Tokens allowed with 18 decimals? Is there a performance penalty for creating so many tokens? Obviously the number of storage capacity needed for mining will be ...
okit247's user avatar