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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Proof of work vs Proof of Stake [duplicate]
I'm newbie to Ethereum and trying to make things clear.
I've read few articles about PoW(proof of work) vs PoS(proof of stake) and what I understood is,
Proof of Work is nothing but the mining, in ...
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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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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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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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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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Reason for World State
All Ethereum blocks contain a stateRoot field - That is, the root hash of the world state trie. I have two questions about that.
From what I've understood through all the reading I've done on Casper ...
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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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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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Casper FFG slashed deposits distribution?
How is the slashed funds distributed upon failing to follow the requirements as a validator?
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Quorum failure - Failed to decode message from payload
We use in our project -JP Morgan Quorum (Ethereum based) bloackchain - with istanbul voting mode. We have 4 nodes (3 of them are validators - hard coded, nonchangable)
And from time to time (...
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Method for staking coins in Casper FFG
When Ethereum changes to a PoW/PoS hybrid (Casper FFG), how will the staking process work? I heard that there might be smart-contracts and you need to send your coins to the contract to stake the ...
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Proof of Stake - Timeslots
In PoW several nodes compete to be elected. If n1 does not get elected eventually nX will be elected. So PoW does clearly not need such a concept of timeslots.
In PoS lets say a node gets elected via ...
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How blocks are calculated in POS
In POS people bet on the blocks to be added to chain and the honest block wins and the people who have voted for honest blocks get a share in the rewards. But one thing i am still confused is, who ...
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Where do the funds go when we loose the stake in PoS (Casper Update)?
In PoS, we know that if the validator try to mess with the blockchain, they loose their funds...where that fund goes ??? tell me please
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Three related hypothetical security flaws in Casper: does the protocol allow them?
Casper attempts to solve the problem of "catestrophic crashes", where validators with more than 1/3rd of the voting weight go offline and thereby stop any more blocks from being validated, by using an ...
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Proof of Stake for ERC-20 Token
I came to learn alot about benefit for proof of stake on Ethereum (staking ether); however, I'm still bit unclear about how that would be applied for ERC-20 Tokens built on top of Ethereum protocol.
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ETH Staking & Pooling
I have ETH and I am building a portfolio.
How will I be able to stake my ETH holdings and make sure these are safe?
Can someone please provide some guidance? Thanks
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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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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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Why do proof of stake protocols use quorums of 2/3 instead of 51%?
I've noticed many protocols using validators like Casper, Tendermint, EOS require 2/3 of nodes (weighted) as the quorum requirement.
What's the reasoning for using this seemingly arbitrary number? ...
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Who proposes blocks in Ethereum Casper the Friendly Ghost
I am trying to understand how CTFG is supposed to work. The available online blogs provide a fairly high-level overview. What I have understood so far is that validators will bet on the blocks as they ...
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Can you use Ethereum to build a blockchain with a different proof mechanism? [duplicate]
This may be a silly question but is it possible to build a system that can use both the euthereum proof of work/stake and a custom built proof using the same ethereum nodes?
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Understanding Proof of Stake implementation
I am trying to understand Proof of Stake based on this implementation:
https://github.com/PoSToken/PoSToken/blob/master/contracts/PoSToken.sol
However, I am confused about a few sections and was ...
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Staking tokens on Ethereum
I'm new to the blockchain space and I am trying to grasp some fundamentals before delving into programming smart contracts. Please correct me if I am wrong regarding any of the following. This is just ...
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Proof of stake. What is liveness?
I'm studying proof of stake. I haven't found a clear definition of what "liveness" is. It is a main thing in PoS content, but I don't think I understand it clearly.
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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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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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What is the status of Proof of Stake?
Many different PoS approaches have been proposed but I am having a hard time finding documents that explain exactly how their protocols work. So, what are some current implementations of PoS?
Where ...
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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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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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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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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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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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can we implement proof of stake contracts or proof of stake based token in solidity on ethereum network?
I have written a contract in solidity that operates on the basis of proof of stake. I want to know is it possible to create a pos based token or contracts and deploy them on ether network. And are ...
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Is it possible to change Proof-of-Work into Proof-of-Stake consensus algorithm of an on-going Ethereum private chain?
I have a on-going small private chain could be seen here. I have only few nodes, hence difficulty is pretty low and average block time is high (around a minute). So it can easily attacked with someone ...
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Overview of Ethereum Milestones?
In 2017 there was the Metropolis hardfork. In 2018 there will be Constantinople.
Is Constantinople a full PoS fork or will it be hybrid like 1 block of 200 will be PoS mined?
Will there be a Casper ...
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Will PoS lover the tx fees? [duplicate]
There's a lot of speak about PoS being more environmentally friendly and making transactions faster to be included in the blockchain but I haven't found any info on the fees. Will the minimum gas ...
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How does the 'secret chain' catch up with the real chain in the long range attack?
I'm trying to dig deep into Casper and one of the things that keep coming up is the long-range attack in PoS. I understand the attack at a high level - basically you would go back some large amount of ...
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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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Will not a PoS implementation converge in a much less wealth equally distributed system?
With the current trends of prices in crypto and the long term vision supported by the community (HODL!), the implementation of Proof of Stake could eventually derive in big ETH stakeholders getting ...
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From Proof-of-Stake to Proof-of-work
Have any (cryptocurrency + blockchain)s switched from proof-of-stake to proof-of-work?
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Is Casper implemented yet?
So as far as I understand, Proof-of-stake works by all nodes voting on what they think the correct next block should be and then recieving a small reward out of thin air if they guess correctly and a ...
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What is delegated proof of stake and why is it not suitable for Ethereum?
Ethereum will switch to Proof Of Stake in some future hard fork called Serenity. For this putpose a new Proof Of Stake protocol called Casper is being developed.[1]
However, there are quite a few ...
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What is the ROI of owning Ether after entering POS?
It's from my understanding you make ETH by owning ETH during POS. And assuming that is true how will ROI be determined?
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What will be the gas price when Eth will use Proof Of Stake?
I know that the cost of a transaction is gasUsed * gasPrice.
Gas used cannot really change unless you change your smart contract code or the gas cost of EVM opcode.
So the gas price is currently ...
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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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Proof of Stake - Is it risky to stake?
What if a client malfunctions due to the corruption of data isn't it risky to stake?
With PoW this is no issue but with PoS this seems to be a real issue with the slasher protocol. I would be worried ...
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Plasma.io: What if someone is offline during a mass withdrawal?
I'm reading the Plasma paper published a couple months ago, and on page 27, they talk about "Adversarial Mass Withdrawals" in the event of block withholding.
My question is, what if someone is ...
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Casper protocol: is it right?
I'm reading about Casper protocol and the hybrid solution that Ethereum is going to adopt in the first place. Can you tell me if I understand the mechanism well?
The hybrid solution initially ...
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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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