Proof-of-work system

Proof-of-work system

A proof-of-work (POW) system (or protocol, or function) is an economic measure to deter DOS attacks and other abuses (e.g. spam) on a network by requiring some work from the service requester, usually meaning processing time.

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Edits on 1 Sep, 2020
Dawson Sewell
Dawson Sewell edited on 1 Sep, 2020
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Blockchain
Dawson Sewell
Dawson Sewell edited on 1 Sep, 2020
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Technology
Edits on 13 May, 2020
Golden AI"Wikidata import from WikidataImport2"
Golden AI edited on 13 May, 2020
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Edits on 19 Mar, 2020
Ale Ortega"La minería es la respuesta al Sybil attack. Es simple pero brillante. Esto es lo que diferencía una blockchain de cualquier otro sistema de cómputo. Es resistente a Sybil attacks."
Ale Ortega edited on 19 Mar, 2020
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Further reading

Title
Author
Link
Type
Date

Sybil attack: concepto fundamental de la blockchain

Mifiel

www.mifiel.com/en

February 28, 2018

Edits on 31 Mar, 2019
Michael Mangus"bad info"
Michael Mangus edited on 31 Mar, 2019
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Is a
Cryptocurrency
Hash function
SHA-256
Ticker symbol
BTC
Ledger genesis
January 3, 2009
Exchange rate
4
Total supply
21,000,000
Deactivated User
Deactivated User edited on 31 Mar, 2019
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Infobox (+7 properties)
Infobox
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Cryptocurrency
Hash function
SHA-256
Ticker symbol
BTC
Ledger genesis
January 3, 2009
Exchange rate
4
Total supply
21,000,000
Edits on 16 Apr, 2018
Alex Dean
Alex Dean edited on 16 Apr, 2018
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Article

Introduction

Tianchang He"Added a bit more explanation in usage in blockchain."
Tianchang He edited on 16 Apr, 2018
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Article

The Bitcoin blockchain uses a proof-of-work system derived from hashcash created by Adam Back.

The Bitcoin blockchain uses a proof-of-work system derived from hashcash created by Adam Back. For a node to propose a block onto the blockchain, it must find a nonce (an arbitrary number that can only be used once) that prepends to the block and results in a hash within a small range. Bitcoin blockchain adjust the size of this range such that every block created globally has about 10 minutes interval.

Further reading

Author
Title
Link

BitFury Group

Proof of Stake versus Proof of Work

http://bitfury.com/content/5-white-papers-research/pos-vs-pow-1.0.2.pdfhttp://bitfury.com/content/5-white-papers-research/pos-vs-pow-1.0.2.pdf

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Edits on 23 Feb, 2018
Michael Naval
Michael Naval edited on 23 Feb, 2018
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Further reading

Author
Title
Link

BitFury Group

Proof of Stake versus Proof of Work

http://bitfury.com/content/5-white-papers-research/pos-vs-pow-1.0.2.pdf

Edits on 7 Dec, 2017
Alex Dean
Alex Dean edited on 7 Dec, 2017
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Edit to enter detailed information about Proof-of-work system

A proof-of-work system is designed as a deterrent to spamming or denial of service attacks by requiring the expenditure of typically computational processing power. This computational work represents an economic cost which an attacker would have to waste in order to disrupt the network. A core aspect of any proof-of-work system is that it is difficult to produce an output (proving work was done sacrificing some sort of economic value) and is easy for others to verify the work was completed without performing the work again themselves.

Usage in blockchain

The Bitcoin blockchain uses a proof-of-work system derived from hashcash created by Adam Back.

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Edits on 15 Aug, 2017
Jude Gomila
Jude Gomila edited on 15 Aug, 2017
Jude Gomila
Jude Gomila edited on 15 Aug, 2017
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Jude Gomila
Jude Gomila edited on 15 Aug, 2017
Jude Gomila
Jude Gomila edited on 15 Aug, 2017
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Proof-of-work system

A proof-of-work (POW) system (or protocol, or function) is an economic measure to deter DOS attacks and other abuses (e.g. spam) on a network by requiring some work from the service requester, usually meaning processing time.

Jude Gomila
Jude Gomila edited on 15 Aug, 2017
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Description (+225 characters)
Article (+73 characters)
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Proof-of-work system

A proof-of-work (POW) system (or protocol, or function) is an economic measure to deter DOS attacks and other abuses (e.g. spam) on a network by requiring some work from the service requester, usually meaning processing time.

Article

Introduction

Edit to enter detailed information about Proof-of-work system

Edits on 1 Jan, 2017
Golden AI"Initial topic creation"
Golden AI created this topic on 1 Jan, 2017
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 Proof-of-work system

A proof-of-work (POW) system (or protocol, or function) is an economic measure to deter DOS attacks and other abuses (e.g. spam) on a network by requiring some work from the service requester, usually meaning processing time.

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