Questions tagged [proof-of-stake]

proof-of-stake is a method by which a blockchain network aims to achieve distributed consensus by asking users to prove ownership of a certain amount of an asset.

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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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452 views

What solutions are proposed to Long Range Attack?

Long Range Attack (explained here) is one of attacks against Proof of Stake. What kind of solutions are proposed to it?
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Does Casper FFG in phase 0 take its checkpoints from the current ETH 1.0 POW chain?

Does Casper FFG in phase 0 take its checkpoints from the current ETH 1.0 POW chain? I'm reading some conflicting material on this. The Casper FFG paper describes taking a checkpoint at every 50 POW ...
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Is Casper FFG still going to be implemented?

What is the status of Casper FFG within the ETH 2.0 roadmap. Is the plan still that it will be implemented with Phase 0 or Phase 1? Or is the plan to adopt Casper CBC instead, and forgo implementing ...
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How is the block interval constrained in Ethereum 2.0

Sorry if i get any of the terminology wrong here, i'm no expert when it comes to PoS protocols. How does Ethereum 2.0 control for blocktime, typically we have the idea of a function that can be ...
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58 views

Where do penalties for being offline go? (for validators)

Where do penalties for being offline go? (for validators) In POS when validator is being offline he loses part of its stake (depends on correlation with other validators being offline aka partial ...
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In proof of stake, is there a difference between being offline and deciding to leave entirely?

I'm struggling to understand the proof of stake concept. As I understand it, in order to participate in validation and its rewards, you must ante up some ether (I was told a minimum of 32). You are ...
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62 views

How does lower network bandwidth and lower latency create a bottleneck for POS Blockchain network?

My understanding is that any proof of stake blockchain would largely remove the processing power and energy consumption bottleneck from the whole system, but even after that the blockchain nodes ...
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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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Are Delegated PoS or “normal” PoS blockchains as secure as PoW blockchains? [closed]

I have heared in some videos regarding new blockchains and Delegated PoS that DPoS does not have same cryptographic security than PoW, apparently because: In PoW, if you are an attacker, as soon as ...
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“consensus over state” vs. “consensus over events”?

Does someone know what is difference between "consensus over state" and "consensus over events" ? I found just title of a reference i.e. "Ian Grigg, blog post “The Message is the Medium,” 2017." ...
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What happens to miners when proof of stake is rolled out fully phasing proof of work out completely? [duplicate]

What happens to miners when proof of stake is rolled out phasing proof of work out completely?
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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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194 views

Will staking increase or decrease volatility?

I'm trying to wrap my head around the implications of locking up much of the supply of ether when proof of stake happens. It seems to me that doing so would decrease the circulating supply and ...
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145 views

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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Proof of Stake how many blocks are proposed each round

So. I understand that the "nothing at stake" problem requires more than one chain being proposed. How can more than one chain be proposed? how many blocks are proposed each round? I thought that only ...
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166 views

Implication of hacking into an ethereum node on proof of stake

It is my understanding that in proof of stake, the validator puts up a stake that gets slashed if they don't respond to requests truthfully. In the scenario that someone hacks into your node, wouldn't ...
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486 views

How does reward mechanism works on Proof-of-Authority consensus?

By following this tutorial. I have created a private chain based on Proof-of-Authority. Please see my CustomGenesis.json file. I have started my chain: > geth --datadir /Users/ethereum/POA/...
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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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Does every node execute contracts in Proof of Stake? If yes, why?

In Ethereum, for Proof of Work this sentence is true: "Every single operation that is executed inside the EVM is actually simultaneously executed by every node in the network. This is why gas exists" ...
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Why isn't Casper POS Dynasty set randomized?

This may be premature to ask this question as POS for ethereum is still undergoing a lot of design changes, but it seems like from all the stuff I've come across that the validator set (eg. dynasty) ...
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Will the proof of stake in ether require you to have the wallet open to continue to stake?

Will the proof of stake in ether require you to have the wallet open to continue to stake like stratis does?
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488 views

POS migration hard fork

when Ethereum will switch to the proof of stack consensus mechanism as i know it will get rid of the POW going through a hard fork. is it possible to have the similar scenario that happened before ...
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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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387 views

If Ethereum switches to POS, does that mean I can never mine coin if I just have a few Ethereum? [duplicate]

If Ethereum switches to Proof-of-Stake, does that mean I can never mine it if I just have, let say, a few Ether? Does it mean the more Ethereum you have, the more chance you have to mine Ether?
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Blockchain Recent Scaling Proposals : (Sharding, blocksize , SegWit, GHOST, Lightning, multichains, sidechains, DAGs)

What are some of the most recent scaling proposals for Blockchain? Ie. various blockchain scalability topics including the blocksize debate, SegWit, GHOST, Lightning, multichains, sidechains, ...
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How GPUs could be utilized after network switch to Casper? [closed]

Now Ethereum hashrate is ~550 Gh/s. That is approximately 22 thousand very powerful Radeon 290x GPUs. After network switch to PoS this hashpower could be used to mine science through Gridcoin. Or ...
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Is proof of stake vulnerable?

If there is a large drop in the US dollar value of ETH over a substantial period, one can assume that people will be deterred from staking ETH because they could lose money (USD) on the stake. Is ...
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246 views

how to setup hybrid PoW+PoS or PoA private network (geth)

I am aware about PoW and PoA setups of ethereum private networks but would like to know if anyone could help or point me the direction how to build a hybrid PoW + PoS or PoW + PoA ethereum based ...
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239 views

Is there any anonymity in Proof-of-Authority?

According to the following article, Proof_of_Authority (PoA) is a modified form of Proof_of_stake (PoS) where instead of stake with the monetary value, a validator’s identity performs the role ...
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428 views

Proof of Stake Automatic Timed Release of Token

I'm using https://github.com/PoSToken/PoSToken/blob/master/contracts/PoSToken.sol as my example of Proof of Stake implementation (feel free to point out others that are worth looking at) however, it ...
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68 views

What does it mean to be 'bounded'

I see this terminology everywhere in ethereum Wikis. What does it mean to be 'bounded'? Its a noob question I know.
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Do ERC20-type tokens make a 51% attack more profitable?

A successful 51% attack (PoW or PoS) would allow the attacker to double spend any token, not just ether, so the greatest possible payoff is equal to the value of all ERC20-type tokens plus all ether. ...
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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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Staking Ethereum

Brand new investor to crypto but have been reading as much as I can on the space over the past couple months. I am looking for someone who could help me me a with a step by step guide on how to stake ...
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277 views

Cloning geth and adding a POS consensus algorithm? [closed]

I am currently learning how to use geth, so far I was able to create a private POW and POA blockchain using one of its consensus types (Clique). I am wondering how feasible it would be to clone the ...
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108 views

Delegated Proof of Stake (DPOS) vs. Proo of Stake? [closed]

What is the main difference between Delegated Proof of Stake (DPOS) vs. Proof of Stake? Is there any significant advantage for security? (since PoS in general suffers security problems.) And which ...
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61 views

POS/Sharding - Incentive for submitting proof-of-dishonesty

While reading through the Nothing at Stake section of the Proof of Stake FAQs it is described how dishonest validators will be punished for voting on two chains. This requires a proof of misbehavior ...
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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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61 views

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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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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284 views

If you have to stake your coins in PoS how can you make sure not to validate a fraudulent transaction

I have a number of questions involved here. What is a fraudulent transaction? Is there an example of this on the blockchain? Just to verify, in PoW the hashing algorithm is calculated to pass from ...
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441 views

Question about proof of stake [duplicate]

Can someone explain to me how proof of stake works in detail? And in particular, which is the difference (if it exists) between proof of stake in general and Casper protocol of Ethereum? Thank you ...
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253 views

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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How would Proof of Stake affect rigs running GPUs (480,580) [duplicate]

I noticed through a few articles about how proof of stake is a likely progression for the ETH project. I agree with the principles and the security benefits it gives, but how would it in real terms ...
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1k views

What will change after reaching PoS?

I have a tiny mining rig running at 17 mhs. What will happen if Ethereum changes to PoS? Will it still be profitable to mine ETHs? Will there be a lot of miners changing to another crypto-currency? ...
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Hidding IP address behind sentry nodes

I would like to know how to set up an Ethereum node behind sentries (proxy nodes). I know there are several ways to approach this issue as mentioned here. https://medium.com/@kidinamoto/tech-choices-...
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What is the proposed ETH 2.0 staking reward and minimum / maximum stake one can put on a node?

There are 80+ million ethereum. A staking node requires only 32 eth to stake. If even just 25% of the 80 million started to stake, that would create 625,000 staking nodes. If the reward is 1 eth per ...
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What Would Be The Reward For Smart Contract Miners In Ethereum POS?

I have seen this: What’s the block reward for smart contract miners? Which addresses it for the POW period of Ethereum, but what about POS? They just earn a sort of "interest" for their stake as ...
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Relationship between fault tolerance and network latency

I'm currently studying Ethereum's PoS and a sentence on the relationship between fault tolerance and network delays caught my attention in the Proof of Stake FAQ. Quoting Vitalik: In this model, ...