Questions tagged [hardforks]

A hardfork is any backwards-incompatible change to the Ethereum protocol, such that a client will need to upgrade in order to remain on the network. This tag is for actual and proposed hardforks, as well as the issues relating to them.

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15
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2answers
5k views

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 ...
16
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2answers
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....
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3answers
2k 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 ...
8
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1answer
993 views

Give a summary of the fork state changes in block 1920000

The hard fork during block 1920000 contained the execution of an irregular state change. For reference purposes it would be great to have a technical overview of these changes and how they were ...
3
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1answer
2k views

How to fork Ethereum from the current state?

I've read a lot of tutorials and guides that teach how to set up your own private network from scratch. However, how would I do that from the current state of the blockchain? Instead of generating a ...
7
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3answers
1k views

What is a hardfork?

It is said that the transition from Frontier to Homestead will be done by a hardfork. What does it mean exactly? Are hardforks expected to also be used in future Ethereum upgrades?
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2answers
4k views

Please provide a summary of the Ethereum hard forks

The question Please confirm what the hard forks of Ethereum were and when they took place was asked on Reddit by u/Tykerr.
4
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1answer
986 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 ...
3
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1answer
514 views

DDOS attack against Ethereum

Ethereum project has become a victime of Ddos attack, slowing down the transactions and giving priviliges to attackers to mine blocks. So instead correcting bugs in geth or parity is there any robust ...
2
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1answer
276 views

What are the changes to be included with Constantinople fork? [duplicate]

Recently it was announced that the next hard fork of the Ethereum network mainnet will be at block 7,080,000. From more recent estimates it will occur around 2019-01-15 18:11:20 UTC. So what are the ...
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1answer
37 views

What’s the full changelog for things which actually had been implemented by Constantinople?

It’s being said that the Constantinople hard fork is a minor one. But as far I know, this is isn’t just a miner reduction fees. They are additional things which were implemented (like a special ꜱꜱᴛᴏʀᴇ ...
6
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1answer
631 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 ...
4
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1answer
172 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
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1answer
741 views

What improvements will the upcoming Byzantium fork bring to Smart Contract development?

The Ethereum Team announced recently that the Byzantium fork will happen on October 16. This will be the first phase of the Metropolis upgrade. What improvements will the Byzantium bring to Smart ...
5
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2answers
854 views

How to hard fork a private network?

We have a private network with geth 1.4.18 clients. We have 3 miners (each owned and managed by a different company) and a number of sync-only nodes. Now we would like to upgrade the network to 1.5.5. ...
7
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1answer
509 views

Casper, Serenity, Constantinople, Ethereum 2.0

I hear alot about the terms: Casper Serenity Constantinople Ethereum 2.0 At some point I thought that all are the same, the next release of Ethereum, but apparently there’s an upcoming fixes patches ...
9
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1answer
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 ...
6
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3answers
2k views

Will metropolis delay the difficulty bomb?

Vitalik said the "ice age will be delayed anyways" (with metropolis). It's not that important or applicable either way, though on the other hand that given network going to be mucking around with ...
2
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1answer
619 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 ...
6
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2answers
1k 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 ...
4
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1answer
131 views

How many transactions get automatically replayed on both sides of the fork? [closed]

There is a lot of talk about possibility of replay attack, but I suspect (and I've seen it claimed) that many (perhaps most or even all) transactions that users issue on one of the chains get replayed ...
3
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1answer
420 views

is there a hardforked version of ubuntu ethereum ppa package?

The ubuntu ppa still contains ETH classic. Is there a ppa for the hard-forked version of Ethereum?
2
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1answer
189 views

Is homestead a hard fork and when will it be activated?

In one of the descriptions it was mentioned that the homestead update contains a new opcode and other changes that are not backward compatible. Thus a hardfork will be required. What is a process of ...
2
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1answer
542 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 ...
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1answer
175 views

How many percent of all nodes decided to hard fork

Where can I see the actual number of nodes that joined the hard fork, in comparison to the others, which didn't? What does the difficulty tell me about that relation? i.e. 100% : 91% as here
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2answers
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My question is about forks in general. If I have a portion of a coin do I get the exact portion of that new coin?

my question is about forks in general. If I have a portion of coins and it gets forked do I get the exact amount of the new forked coin?