Questions tagged [proof-of-stake]

Proof of stake is an alternative consensus mechanism that adapts mining success chances with the proportion of the cryptocurrency's tokens held by the miner.

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Can proof of stake be used without tokens? [on hold]

From what I understand from the PoS, it depends on the tokens in our possession (depending on the quantity or age of the tokens in particular). However, I have seen that some blockchains do not use ...
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Why do we need to chain the blocks (creating blockchain) in a permissioned blockchain?

The main question is: What does "chaining block" mean in a permissioned blockchain? OR in any blockchain network in which creating a new block does NOT need consuming resources/energy ? (even in the ...
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Proof of Stake - double spending

I'm unsure how Proof of Stake prevents double spending. In PoW it's evident that I need 51% of the hashing power of the network, to "overtake" the real chain with my fraudulent fork. But what stops ...
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How the process “ lock a certain amount of coins into the network as their stake” achieved technically in the Proof of stake algorithm

i am trying to understand deeper the proof of stake algorithm. i think i understand the basics but i am struggling to understand how this achieved thoroughly under blockchain network and how the nodes ...
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35 views

How to model randomness in validators selection in PoS?

I searched a lot here and on the Internet to figure how how randomness selection of validators in PoS works? I understand it is a random selection based on fraction of stake a validator has, similar ...
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Proof-of-Stake: What if a bad enactor is chosen by random?

My understanding of proof-of-stake is the following: The node that mines the next block is chosen, randomly in proportion to the amount of nodes they have in the network (ex. person who who owns 5% ...
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What are the biggest Proof-of-Stake roadblocks? [closed]

What are the biggest hurdles (technological or otherwise) that the Proof-of-Stake consensus algorithm must overcome to become the de facto consensus algorithm for blockchain? Or put differently, what'...
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73 views

Permissioned or Permissionless blockchain? Which one is PoS more adapted for?

Since in proof-of-stake (PoS) there is no mining process, according to functionality of permissioned and permissionless blockchains, which type is PoS more adapted for? In the other words, is a PoS-...
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Proof-of-Stake: How to ensure immutability of the blockchain?

In Proof-of-Work, a miner tries to solve PoW puzzle based on the hash of previous block, such that in case of changing block B_i, all blocks after that (blocks B_i+1, B_i+2, ...) are no longer valid ...
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57 views

Sorry newbie, I dont get the PoS block creation, to much contradiction

I am sorry for the repeat question but I cant find a clear answer. Most of the time PoS isnt explained in detail (only explaining the advantage) and a lot of sources contradict each other and now I am ...
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I am just wondering what are the methods which can hide all the transactions and also able to validate transactions in an block chain?

I am new to block chain and was looking at how block chain work mainly proof of stake based . They check validity by going through all the transactions which is something concerning as everyone can ...
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In a Proof of Stake (PoS) mining scheme what prevents miners from producing many more blocks or inflating the currency?

In a traditional Proof of Work (PoW) scheme it's assumed it takes some amount of time to compute the PoW function, such as SHA256x2 in Bitcoin and the difficulty increases as the network is capable of ...
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91 views

Is there a reward or penalty for validators in proof-of-stake (PoS)?

In PoW consensus, if a miner could solve the puzzle, they receive some monetary reward (some coins) to incentive miners, since mining process has a considerable monetary cost for miners including ...
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proof of stake concept and implementation confusion

i'm currently studying proof of stake concept in cryptocurrency in preparation of building it soon, but i still have some doubts about my understanding of the concept itself, and i have a lot of ...
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PoW/PoS/Masternode blockchain [on hold]

After mining some blocks as premining and once POS is started, is it possible to stop the chain altogether (turning off all the nodes) and restart at some point in near future? From the technical ...
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Failing to create a new address to be used for receiving staking rewards whenever a generated block is accepted [closed]

Our problem is that we need to get a new address on each stake. What I've tried so far is: Generating a new address right before a block is accepted and try using it to receive the stakes, but that ...
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394 views

How can I simulate ProofOfStake (PoS) for a testnet (clone of Pivx)?

After the end of PoW blocks, I am unable to mine using PoS. Here is my setup. 1) Server with the following config file. server=1 daemon=1 listen=1 rpcuser=user rpcpassword=password 2) Two clients ...
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How to start Proof-of-stake phase after pre-mining the coin in Proof-of-work phase?

I am learning to develop a new cryptocurrency on my own, for the same i decided to develop a Proof-Of-Stake coin, I forked the Okcash for this purpose. And was able to change the coin according to my ...
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155 views

How to get staking balance using RPC commands [closed]

I enabled staking on my wallet. I want to know the staking rewards I got. Is there any rpc command exist to get staking reward balance? Thanks
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Tendermint consensus: Are validators “known” and “pre-selected”?

What are similarities and differences between Tendermint consensus and Proof-of-Stak? For example, in both consensus, a validator is selected randomly (I think in Tendermint consensus they are ...
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Ardor Lightweight Contracts: (Almost) trustless way with new Phased Transaction type?

I asked that question on Bitcointalk, but got no response so far. As Lior has proposed to make Stackexchange the main medium of exchange about Ardor I'm asking here. As I read in the FAQ, the main ...
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How many transactions per block on Ardor? Plans for scaling?

How many total transactions are there in each Ardor block? Out of the total transactions per block, how many are child chain transactions? What are the limits and what types of scaling solutions are ...
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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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Delegated Proof of Stake (DPOS) vs. Proof of stake?

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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What is the “main” difference between consensus mechanism of Bitcoin and Ethereum?

Bitcoin and Ethereum both use proof-of-work (PoW) consensus mechanism. One of differences between Bitcoin Pow and Ethereum PoW is difficulty level, meaning that while in bitcoin block generation rate ...
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Has PoS really been proven secure under comparable assumptions as Bitcoin?

I am just reading this paper which claims to be a formal proof that Cardano's latest Ouroboros PoS protocol ("Genesis") gives similar security guarantees than Bitcoin's PoW protocol. Unfortunately, it ...
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how does PoS choose a 'winning' chain

I often see the 51% attack described by saying that if Bitcoin is presented with two conflicting chains, it will select the longest one. This would seem to work because difficulty only re-adjusts at ...
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215 views

In PoS how is Net Stake Weight calculated

In PoS coins there is a common 'time to stake' estimate, this is based on the users own accumulated stake amount as a proportion of the network wide stake weight. However there is no way for any node ...
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41 views

How do new coins come into existence in a blockchain with Proof-Of-Stake where there are no miners

In Proof-of-Stake consensus there are no miners, there are validators. These validators validate the transactions in a block and charge some fee for it so when and how are new coins generated?
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How does Proof-of-Stake works programmatically

I've researched on the internet, but am still confused about how Proof-of-stack works programmatically. As mentioned here, in Proof-of-Stake system, A random Nextcoin is selected to be the next "...
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147 views

My coin - Proof-of-Action

I am writing a project on cryptocurrencies. As a part of this project, I thought of a new token for web services exchange. I tried to combine PoW and PoS and here is what I have. I called it Proof-of-...
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What other proof methods are there? [closed]

I am familiar with the proof of work method and a little with the proof of stake method. Is there any more methods that are out there and how do they work?
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Validation methods beside POW etc

Are there other concepts for the validation of the next added block to the blockchain beside POW, POS etc.? Of cource there are, but is there a methode that is shining out of the mass? A methode that ...
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208 views

How does Proof of Stake prevents dishonest behaviour compared to PoW?

I know that in Proof of Work (PoW) once a node has found the solution (the nonce) they announce it to the network. Then the rest of the nodes can easily verify the correctness of the block hash and ...
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Proof of Work and Proof of Stake - Competitive advantage

It is said that Proof of Stake will be the mainstream consensus mechanism in the long run. Regarding the nature perspective I totally agree. But it has been rumoured that Proof of stake is more ...
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Who does the work in proof of stake (POS)?

I heard about proof of stake lately, and people are saying you don't need GPU or any mining power, as long as you have the coins, they will generate you more coins (more coins you have, more earnings ...
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Forking PIVX - ERROR: CheckBlockHeader() : proof of work failed

I have forked PIVX and generated new genesis block hash, merkle root and nonce, and changed the rewards parameters. It compiles fine and the daemon starts, I have even got 2 nodes connected, but ...
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In what sense does the security model of proof-of-stake require users to “log on to the internet every few months”

This is primarily a question about something I heard Vitalik Buterin say in an interview the other day. (Unchained podcast's January 9, 2018 episode, at 34 minutes, 15 seconds) I quote: As far as ...
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Can a Blockchain be Built Like This?

Can a Blockchain be Built Like This? 1) Alice sends Bob one X-coin. 2) The blockchain's protocol takes X and the next (say) 100 transactions and puts them in a block. 3) Distributed peer-to-peer ...
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How are gridcoin transactions validated?

Bitcoin uses it's calculations to validate transactions but apperently gridcoin doesn't take any transaction data into the calculation of BOINC projects. On the wikipedia page of Gridcoin the ...
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Does PoS forging require having private key on the computer connected to the internet

Does PoS forging require having private key on the computer that do actual forging process? If it depends on the realization of specific cryptocurrency, please, give some examples of such ...
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Worries about ability [closed]

I have never been the best at math. However I am pretty good with computers. If I buy the gear to mine the coin how hard is it to work the machinery and do the work to make the coin?
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How it is possible to create coins only with the proof of stake system?

Nick Szabo comes 2011 with a alternative proof system wich he calls proof of stake POS. This system was used later by varios coins ( NXT, Peercoin, Blackcoin etc.) but all of them had the genesis ...
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Proof of stake fork problem

I have a doubt with Proof of Stake. As I have watched some tutorial videos and websites, there is information that: with Proof of Stake, in order to make a double spending attack, a node has to own at ...
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544 views

How does a miner get selected in Proof Of Stake?

I am trying to understand POS. I get that POS uses currency held analogous to the hash power held in POW system. More the stake we have, more are our chances of mining the block. At various sources I ...
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How does bundling as a bundler in Ardor work?

What do the bundling options mean in Ardor when you are bundling? Minimum Rate Rate Fee Limit Overpay
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How a stakeholder is chosen randomly in proof-of-stake?

In PoS a group of stakeholders is selected randomly. Now, the question is if stakeholder_1 owns more coins than stakeholder_2, then he has more chance to be selected as a validator in comparison to ...
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altcoin debug.log shows ERROR: CTxDB::LoadBlockIndex() : Failed stake modifier checkpoint height=0

What I have done so far: Generated new Genesis Block Generated new MerkleRoot Updated MerkleRoot Updated Genesis block values Commented out these lines Compiled on CentOS 6 Created altcoin....
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Is it possible to have proof of stake and proof of work transactions in the same block ?

To understand more of the blockchain technology i asked myself , is it possible to have proof of stake and proof of work transactions in the same block ?
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How to create a new POS altcoin?

I am looking to download a POS (Proof Of Stake) files to create my new altcoin, but all the instructions I found online is for the POW (Proof Of Work) and without any instructions for the blockchain. ...