Questions tagged [casper]

Casper is a security-deposit based economic consensus protocol.

Filter by
Sorted by
Tagged with
2
votes
1answer
2k views

What is network weight and my weight?

What does it mean by my weight and the network weight in POS ? -Thanks.
7
votes
1answer
330 views

In Casper, how can a block be finalized if previous blocks are unconfirmed?

As explained in an Ethereum blog post, one consequence of consensus-by-bet is that: a block can remain unconfirmed even when blocks after that block are completely finalized. The given example ...
8
votes
2answers
644 views

How does betting on a block work in Casper?

Betting on a block is betting money that effectively says something like: "I believe that this block has at least a 60% chance of being true." Q1. Once a bet is made, is it possible to change the ...
8
votes
1answer
310 views

Can you (as a node) manually choose what block to bet on in Casper?

Ethereum plans to move to the Casper proof of stake algorithm in a future version of the network. However, as nodes are betting on which block will be produced next, does that mean (as a node) you can ...
8
votes
1answer
392 views

Does more ether = more voting power in Casper?

Ethereum plans to move to the Casper proof of stake algorithm in a future version of the network. However, as nodes are betting on which block will be produced next, does that mean the more ether you ...
4
votes
2answers
639 views

What property makes Proof of Stake easier to apply in permissioned blockchains?

There are a number of efforts driving towards the transition from the current proof-of-work towards proof-of-stake (more info here). Meanwhile proof-of-stake is already in use in some permissioned ...
13
votes
1answer
615 views

Are light nodes possible in Casper?

My understanding of light nodes is they need PoW in the block headers. That PoW proves that $x amount of energy has gone into securing that chain. With PoS, the proof that $y is securing the chain ...
4
votes
2answers
1k views

When and if ETH converts to PoS who will receive the staking rewards?

For ETH stored on online exchanges will the exchanges receive all staking rewards or will they be passed along to their users that actually own the ETH?
8
votes
1answer
6k views

When will Ethereum switch to Proof of Stake? [closed]

What is the latest estimation of when will the switch to PoS happen? Last time the question was asked about 6 months ago, the answer was mid-2016, which is just around the corner. https://...
33
votes
3answers
37k views

How do miners profit post-PoS, if at all, how will new miners get their start, and who will execute the EVM byte code (and why)?

I've been following the release of Casper/PoS closely, and I'm curious about a few details. How will miners make money (even if GPUs are less valuable)? Are spare compute resources (say RAM, CPU) ...
4
votes
0answers
127 views

How is Casper better than POW against possible government censorship? [closed]

As of now my understanding is that with POW an attack by one or multiple goverments could be orchestrated just by raiding mining farms (which can be easily identified given the electricity bill) and ...
7
votes
3answers
321 views

Is it possible for Bitcoin to live on the Ethereum Blockchain?

It seems to me that once Casper is fully implemented, the best of both worlds would be for the valuable and scarce BTC token to live on the expedient, efficient Ethereum blockchain. But would this be ...
31
votes
2answers
21k views

What exactly is the Nothing-At-Stake problem?

What exactly is the Nothing-At-Stake problem in Proof-of-Stake consensus networks? While I understand what the nothing at stake problem means, I do not really understand the security implications. ...
10
votes
2answers
5k views

What is the Long-Range-Attack in Proof-of-Stake?

What is the Long-Range-Attack in Proof-of-Stake? And how will this vector be mitigated with the Casper Proof-of-Stake implementation?
5
votes
1answer
1k views

PoW, PoS and transaction conflict resolution. How does it work? Isn't PoS at risk here?

So I am trying to put my head around POS. And I have a question about transaction conflict resolution and whether there is an attack risk here. If I understand correctly how POS works, if there are ...
6
votes
1answer
879 views

How are block proposals made in Casper?

A blog post says this about block proposals in Casper: A NXT-style random number generator is used to determine who can generate a block at each height; essentially, this involves taking missing ...
4
votes
2answers
170 views

When a bonded node loses a bet who gets the ETH?

In Casper Proof-of-Stake, a validator needs to be a bonded node: it puts up a security deposit that can be lost if the validator misbehaves. When a bonded node misbehaves, who receives the lost ETH?
8
votes
3answers
10k views

When will Ethereum switch to Proof of Stake so miners can plan to prepare themselves?

There are talks that the switch to PoS could happen this summer but is it too early, or the date is real so should miners already acknowledge that soon enough they will not be contributing as much?
3
votes
1answer
526 views

Will the processing power of the EVM ever be increased?

From what I understand almost all hash power on the network is used to secure the blockchain, but the processing power of the EVM remains constant even as the hash power of the network increases, and ...
2
votes
1answer
390 views

ETH vs Tokens price issue [duplicate]

Is there any possibility for one token (e.g. Augur's REP) to become more valuable than the total Ether market cap? If so, how would that be possible? In Security of PoS if/when Assets (Tracked or ...
4
votes
2answers
188 views

What happens if demand for bonded validators is greater than 256?

This answer suggests there will be a maximum of 256 bonded validators for Casper. What if 257 nodes want to become bonded validators? Is there a race? What's the consensus mechanism to pick 256 ...
14
votes
2answers
1k views

In Casper PoS, what is a finalised block?

Vitalik talks about block finalisation here, and Vlad also talks about it here. What is a finalised block? How long does it take to finalise a block? What are the security guarantees of a finalised ...
10
votes
4answers
3k views

What are the scalability benefits of PoS vs PoW?

This accepted answer claims that one advantage of PoS vs PoW is that some scalability problems can be addressed more easily with PoS What are those scalability problems? What are the scalability ...
2
votes
1answer
237 views

How will the transition from PoW to Casper's PoS work? [duplicate]

How will the transition from PoW to Casper's PoS work? Is there a spec written? Have there been any tests? Has code or documentation been written?
10
votes
2answers
1k views

What is the target block time for Casper?

With PoW, the block time is around 17 seconds. What is the target block time for Casper's PoS?
2
votes
1answer
54 views

What signatures will be used for Casper bets?

In this blog post, Vlad Zamfir describes a bet as a object with a signature. What kind of signature will Casper bets have? What is the length (in bytes) of those signatures?
2
votes
2answers
247 views

What is the network overhead of Casper?

In Bitcoin the PoW mining has very little overhead in terms of bandwidth. The miners simply need to produce the PoW, which I believe is 32 bytes per 10 minutes. In Casper I understand every validator ...
7
votes
4answers
612 views

What are the open issues with the Casper proof of stake algorithm?

Ethereum plans to move to the Casper proof of stake algorithm in a future release named Serenity. There's a comment that Casper's "basic mechanisms are fairly firmed up now". What are the details of ...
17
votes
1answer
1k views

How does Casper solve the “Nothing at Stake” issue?

One of the criticisms of proof of stake is that stakers can vote for multiple blockchain forks with only a trivial cost. I believe NXT solves this by not giving out a mining reward, so that the ...
10
votes
1answer
3k views

Where is the updated Ethereum roadmap?

Googling "Ethereum Roadmap" just brings up outdated blog posts. Where can i find the current, updated roadmap?
16
votes
1answer
3k views

What is the difference between Casper and Tendermint

Both are consensus protocols that fall under the category proof of stake. However - they differ in some design goals. Casper favors availability over consistency in comparison to Tendermint. What does ...
2
votes
1answer
334 views

How will the number of confirmations for security change with Casper?

How will this answer change when Casper is deployed?
7
votes
2answers
5k views

What is GHOST and what is its relationship to Frontier and Casper?

As high-level as possible without losing important meaning, what's the intuition behind GHOST? How is it currently implemented in Frontier? What will be different with GHOST in Casper?
18
votes
2answers
3k views

What is casper? [duplicate]

I see that Vitalik and Vlad are working on Casper. As far as I understand, casper is the new POS mining algorithm. Why is it better than bitcoin's POW? I understand it's environmentally friendly, ...
39
votes
3answers
15k views

How does the Casper proof of stake algorithm work?

Ethereum plans to move to the Casper proof of stake algorithm in a future version of the network. What are the details of that algorithm, and how does it compare to previous Proof of Stake consensus ...
130
votes
5answers
43k views

Why does Ethereum plan to move to Proof of Stake?

The initial version of Ethereum (Frontier) uses a Proof of Work based consensus algorithm, but I see that there are plans to implement a Proof of Stake based consensus algorithm called "Casper" in a ...

1 2
3