Questions tagged [proof-of-work]

A proof-of-work (POW) system is an economic measure to deter denial of service attacks and other service abuses such as spam on a network by requiring some work from the service requester, usually meaning processing time by a computer.

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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 ...
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Transaction confirmation time with proof of stake [duplicate]

With proof of work and the associated mining process, transactions must wait till the block verifying the said transaction reaches enough depth within the blockchain to avoid relying blocks generated ...
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Why does Ethereum POW work fine in spite of short confirmation time?

Bitcoin confirmation time is about 10 mins. Ethereum confirmation time is about 12 sec. Why does Ethereum POW work fine even though confirmation time is shorter than Bitcoin's?
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What is the set number of Ether in existence during POW and then POS? [duplicate]

How many Ether exist during POW and then POS? Is it unlimited inflation?
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Are there any plans to switch Ethereum's primary hash algorithm from Keccak-256 to SHA3?

The Ethereum project was started before the SHA3 standard was finalised, and currently uses an earlier version of Keccak-256 which does not precisely match the FIPS-202 standard for SHA. Are there ...
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How does Ethereum avoid mining pool centralization?

As a proof-of-work (PoW) based blockchain, how does Ethereum combat mining pool centralization, which can lead to an entity controlling the majority of hashing power?
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What is the total supply of Ether?

In Bitcoin, the total supply is capped at 21 million BTC. Is the total supply of Ether capped? How much will be mined before the Proof of Stake (POS) transition, and how will POS affect the issuance ...
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What's the difference between proof of stake and proof of work?

The Ethereum frontier network currently uses a proof of work (PoW) consensus algorithm, while a future version of the network plans to utilise a proof of stake (PoS) algorithm instead. What's the ...
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What kind of hardware is required to mine on Ethereum?

The Ethereum frontier network has a customised proof of work algorithm called Ethash. What kind of computer hardware is required to mine with this proof of work algorithm?
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Is it possible to issue an Ethereum token with its own proof of work algorithm?

If I want to issue a token on Ethereum, but have that token function according to its own proof of work algorithm (for example, double SHA256 like Bitcoin), is it possible to do that? And if so how ...
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What proof of work function does Ethereum use?

The Ethereum frontier network currently uses a proof of work (PoW) based consensus algorithm. But which specific PoW function does that algorithm use, and why was it chosen?

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