Questions tagged [casper]

Casper is a security-deposit based economic consensus protocol.

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What is meant by locking of ether in proof of stake?

In PoS, forgers stake their ether on a block. These ether are locked and can't be used. What does it mean by locking of ether and how does it work?
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Ethereum proof of stake - Is transaction finality/settlement finality finally possible / within reach?

With Ethereum proof of stake, is transaction finality/settlement finality finally possible / within reach?
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Will Casper be “backwards compatible” with currently issued tokens such as ERC20 tokens?

With Casper now available for testing, does the protocol work with regular ERC20 tokens? For example if Casper becomes the main protocol for the whole Ethereum network and the old PoW method is gone,...
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What are the challenges involved moving Ethereum from POW to POS?

I'm aware of the idea to roll out the POS protocol by using a hybrid model of POS/POW. What are the challenges of such a change? This hybrid model would make mixed adoption(for legacy users and new ...
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599 views

BFT vs On-chain POW

What significant advantages does BFT provide over On-chain POW solutions and why or why not are they not more commonly used?
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Won't Casper mean that the processing power of the network is reduced?

Something just occurred to me. The whole point of Ethereum is to act as a giant global computer. Currently that computer utilises many thousands of GPUs. When we switch to Casper I will end up mining ...
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154 views

Who can participate in Casper?

From what I understand, non-validators will feel benefits from the change to casper. However, is it only validators that can actually participate in Casper? Is it correct that if you have etehreum in ...
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221 views

What are light node's role in Casper?

So casper testnet is out and I have a few questions! From previous discussions it seems that light nodes cannot be validators. If this is correct, then what will the purpose of light nodes be as ...
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249 views

Does Proof-of-Stake consensus require a blockchain?

In a proof-of-work blockchain, the validity of the network is ensured by the hashes of each block pointing to the previous block. A "block on its own" would not be very trustworthy and, without all ...
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365 views

What is Ethereum's inflationary model going to be after switching to Casper?

Some time ago I read Vitalik Buterin's blog post about possible attitude to inflation and transaction fees. From it it followed that nothing was decided yet and there are various possibilities. Has a ...
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how does casper help with finality?

My question is very simple... I've watched some videos and read articles, but couldn't figure this. It's said that on the internet If the block has been finalized, it can't be reverted/changed in ...
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Where is the stake amount stored in Proof-of-Stake?

So in the PoS consensus algorithm, the nodes can lock their coins and the node with the highest coins has the highest probability of getting the chance for validating coins. I have two questions: 1) ...
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Strange points of Casper algorithm

Currently, Ethereum developers are developing Casper Algorithm for Ethereum 2.0. According to their proposal, some validator are chosen randomly but validators has permanently authority to verify ...
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Impact of POS and Shrading on tx costs?

How transaction fees will be affected after implementation of Casper protocol?
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What are the formal specifications for the temporal reward in Casper?

Casper has a temporal reward where those who place bets early (on the block that ends up as the winner) get more reward. What are the formal specifications of that, how is the temporal reward ...
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how can validators validate blocks?

I have a question about how POS (ethereum casper) works. I am a little bit confused. So let's say User A decides to be a validator. So he has to have at least 1000Ether in his account to become a ...
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Active vs crystallized state in shasper

https://notes.ethereum.org/SCIg8AH5SA-O4C1G1LYZHQ?view# Active state means every single block produced on PoS main chain. Crystallized state occurs every 100th block. Only Crystallized state ...
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How will casper maintain time between 2 blocks?

In current proof-of-work, there is an artificial time delay introduced because of difficulty. This allows the network to accept transactions that ultimately form the block. Vlad argues that once ...
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Casper versus Proof of Stake on Other Blockchains

I get the impression that work on Ethereum's proof of stake protocol Casper is a tough project. What makes it so that bringing proof of stake to Ethereum is more difficult compared to all the other ...
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What will happen to the gas block limit after Casper?

Is there any reason to believe it'll go up or down significantly?
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Have there been any systems in use that are similar to Vlad Zamfir's consensus-by-bet?

Do prediction markets use a similar betting game where early bets give high rewards, and late bets give lower rewards?
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In Casper, theoretically how many validators could participate in consensus-by-bet (at any given block)?

Is the number of validators (at any given block) limited, and what is the theoretical upper limit?
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What attacks could be performed without a solution to “nothing at stake” (security deposits) [duplicate]

Without security deposits, there is no dis-incentive for signing multiple blocks on multiple chains, and so the validators incentive is to sign off forks when they come up. What attacks would be ...
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Will a non-programmer be able to participate in 'mining' Casper?

I have very limited programming skills. Basically, I am a layperson. Will I be able to participate in bonding ('mining') Casper? Or will participation in Casper be limited to professionals?
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How does interest work in casper?

Based on this answer: https://ethereum.stackexchange.com/a/37419/24310 How does interest work with casper? Is it correct to describe what the validators receive as interest?
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How much ethereum does one need for Proof of Stake?

Is there a minimum to have in order to qualify for this proof of stake?
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After POS is implemented, what stops mining pools from being formed?

There won't be "mining pools" but stake pools but what if someone creates a system where participants stake everthing in one place in order to make the mkst money? Is this allowed and is this a ...
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Is the requirement for signature of more than 2/3 of validators, weighted by deposit, a solution for the data availability problem?

The data availability problem is known to be one of the main problems in blockchain systems. So in case of a proof of stake scheme which requires a block to collect signatures of at least 2/3 of ...
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Ethereum Casper - Censorship

When 2/3 of the validators censor 1/3 of the validators (by not validating their txs), 1/3 would get slashed heavily and 2/3 would get slashed a bit in the Casper protocol. Isn't it very compelling ...
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Ethereum Casper block convergence

How does Casper achieve that all validators magically converge to a block without deciding the block deterministacally (stake-grindable)? How is this implemented in the testnet?
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Casper PoS - Nodes and code execution?

In current Ethereum, smart contracts are executed by the CPU/RAM of nodes who are rewarded the gas from the transaction. Will this be the same in Casper? Are there any pools for this specific purpose ...
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Scaling ethereum [closed]

I have been looking up scaling issues associated with Ethereum. I have not found any resources that give an easy to understand definition of the problem. I am aware that there are efforts like Raiden, ...
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306 views

Will Casper affect transaction prices?

To what extent will Casper affect transaction prices? Seems like it wouldn't affect gas amounts, but that it would lower the gas prices, owing to the lower costs of operating the network.
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What will a block look like post Casper?

Currently I think blocks look like [previous block hash + transactions + nonce], such that the hash of all that is less than the difficulty. After Casper what will it look like? I guess there is no ...
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234 views

Ethereum Casper - safety vs liveness

Lets assume there are 2/3 honest nodes (non-byzantine). I call this set of nodes set A. Please tell me if I'm wrong, but AFAIK there are two main approaches, one that favors safety over liveness and ...
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Am I installing Casper FFG node correctly?

After I begin running the node (normally or with the miner turned on), I see this message: 2018-01-02 16:47:02,428 WARNING:p2p.discovery.kademlia recv ping from self?! Is this what should be ...

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