Proof of stake
From Wikipedia, the free encyclopedia
Jump to navigationJump to search
This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)
Some of this article's listed sources may not be reliable. (November 2018)
This article relies too much on references to primary sources. (October 2019)
Proof of stake (PoS) is a type of consensus mechanisms by which a cryptocurrency blockchain network achieves distributed consensus. In PoS-based cryptocurrencies the creator of the next block is chosen via various combinations of random selection and wealth or age (i.e., the stake).
Contents
1 PoS vs PoW
2 Block selection variants
2.1 Coin age-based selection
3 Criticism
4 References
PoS vs PoW
A consensus mechanism can be structured in a number of ways. PoS and PoW (proof-of-work) are the two best known and in the context of cryptocurrencies also most commonly used. Incentives differ between the two systems of block generation. The algorithm of PoW-based cryptocurrencies such as bitcoin uses mining; that is, the solving of computationally intensive puzzles to validate transactions and create new blocks. The reward of solving the puzzles in the form of that cryptocurrency is the incentive to participate in the network. The PoW mechanism requires a vast amount of computing resources, which consume a significant amount of electricity. With PoS there is no need for 'hard Work'. Relative to the stake, the owner can participate in validating the next block and earn the incentive.
Block selection variants
Proof of stake must have a way of defining the next valid block in any blockchain. Selection by account balance would result in (undesirable) centralization, as the single richest member would have a permanent advantage. Instead, several different methods of selection have been devised.
Coin age-based selection
Peercoin's proof-of-stake system combines randomization with the concept of "coin age", a number derived from the product of the number of coins multiplied by the number of days the coins have been held.
Coins that have been unspent for at least 30 days begin competing for the next block. Older and larger sets of coins have a greater probability of signing the next block. However, once a stake of coins has been used to sign a block, it must start over with zero "coin age" and thus wait at least 30 more days before signing another block. Also, the probability of finding the next block reaches a maximum after 90 days in order to prevent very old or very large collections of stakes from dominating the blockchain.[non-primary source needed]
This process secures the network and gradually produces new coins over time without consuming significant computational power.[unreliable source?]
Criticism
Some authors[non-primary source needed][non-primary source needed] argue that proof of stake is not an ideal option for a distributed consensus protocol. One issue that can arise is the "nothing-at-stake" problem, wherein block generators have nothing to lose by voting for multiple blockchain histories, thereby preventing consensus from being achieved. Because unlike in proof-of-work systems, there is little cost to working on several chains. Some cryptocurrencies are vulnerable to Fake Stake attacks, where an attacker uses no or very little stake to crash an affected node.
Notable attempts to solve these problems include:
Peercoin is the first cryptocurrency that applied the concept of PoS.[citation needed] In its early stages, it used centrally broadcast checkpoints signed under the developer's private key. No blockchain reorganization was allowed deeper than the last known checkpoints. Checkpoints are opt-in as of v0.6 and are not enforced now that the network has reached a suitable level of distribution.[citation needed]
Ethereum's suggested Slasher protocol allows users to "punish" the cheater who forges on top of more than one blockchain branch.[non-primary source needed] This proposal assumes that one must double-sign to create a fork and that one can be punished for creating a fork while not having stake. However, Slasher was never adopted; Ethereum developers concluded proof of stake is "non-trivial", opting instead to adopt a proof-of-work algorithm named Ethash.[non-primary source needed]
Nxt's protocol only allows reorganization of the last 720 blocks.[non-primary source needed] However, this merely rescales the problem: a client may follow a fork of 721 blocks, regardless of whether it is the tallest blockchain, thereby preventing consensus.
If an asset’s primary (if not sole) utility is the exchange for other goods and services and if it does not have a claim on the income stream of a productive asset (such as a stock or bond), it must compete as a form of money and will only store value if it possesses credible monetary properties. With each 'feature' change, those that attempt to copy bitcoin signal a failure to understand the properties that make bitcoin valuable or viable as money. When bitcoin’s software code was released, it wasn’t money. To this day, bitcoin’s software code is not money. You can copy the code tomorrow or create your own variant with a new feature and no one that has adopted bitcoin as money will treat it as such. Bitcoin has become money over time only as the bitcoin network developed emergent properties that did not exist at inception and which are next to impossible to replicate now that bitcoin exists. bitcoin primedice
bitcoin escrow
cryptocurrency wallet bitcoin значок кран ethereum
ethereum news monero hardware Nanopoolbitcoin history bitcoin проверка ethereum прогнозы monero pro rocket bitcoin cryptocurrency bitcoin script bitcoin ledger ферма ethereum block ethereum
1 ethereum системе bitcoin top tether script bitcoin пул bitcoin bitcoin зарабатывать You cannot answer this by saying that the shoemaker can in turn trade the money to someone else, for that begs the question, why does that person want the money?In summary, FinCEN's decision would require bitcoin exchanges where bitcoins are traded for traditional currencies to disclose large transactions and suspicious activity, comply with money laundering regulations, and collect information about their customers as traditional financial institutions are required to do.bitcoin aliexpress bitcoin государство мерчант bitcoin capitalization cryptocurrency
bitcoin talk bitcoin cny bitcoin клиент bitcoin fox bitcoin bloomberg bitcoin запрет bitcoin курс bitcoin usd bitcoin реклама
ethereum асик bitcoin фарминг удвоить bitcoin заработок ethereum
bitcoin nachrichten fire bitcoin bitcoin аккаунт bitcoin компьютер bitcoin icons bitcoin plus Ethereum Featuresbitcoin fortune bitcoin 2000 monero benchmark Other cryptocurrencies, such as NEO and Lisk, are using a different mining system that uses much less electricity. This system is called PoS (Proof-of-Stake).bitcoin иконка я bitcoin bitcoin base bitcoin регистрация bitcoin скрипт withdraw bitcoin carding bitcoin
форки bitcoin котировки bitcoin bitcoin instant bitcoin banking
bitcoin fire ethereum настройка testnet bitcoin bitcoin skrill продать bitcoin использование bitcoin bitcoin blockchain fpga ethereum
Bitcoin Core is free and open-source software that serves as a bitcoin node (the set of which form the bitcoin network) and provides a bitcoin wallet which fully verifies payments. It is considered to be bitcoin's reference implementation. Initially, the software was published by Satoshi Nakamoto under the name 'Bitcoin', and later renamed to 'Bitcoin Core' to distinguish it from the network. It is also known as the Satoshi client.bitcoin step биржа ethereum ethereum investing bitcoin транзакция заработка bitcoin bitcoin cost monero rub bitcoin оборот сбербанк bitcoin ethereum алгоритм bitcoin faucets faucet bitcoin rinkeby ethereum tether yota
up bitcoin bitcoin сайты ethereum online bitcoin lurk reward bitcoin bitcoin server bitcoin оплата microsoft bitcoin ethereum алгоритм рубли bitcoin bitcoin халява автомат bitcoin forex bitcoin make bitcoin
bitcoin bloomberg ethereum картинки bitcoin магазины cryptocurrency price bitcoin котировка сложность ethereum 3 bitcoin alpari bitcoin
автокран bitcoin сложность monero ethereum добыча rocket bitcoin click bitcoin nya bitcoin обмен tether My job here is simply to find assets that are likely to do well over a lengthy period of time. For many of the questions/misconceptions discussed in this article, there are digital asset specialists that can answer them with more detail than I can. A downside of specialists, however, is that many of them (not all) tend to be perma-bulls on their chosen asset class.видеокарты bitcoin short bitcoin ethereum сайт joker bitcoin bitcoin вирус bitcoin market
bitcoin лотереи nicehash monero форки ethereum
monero обмен bitcoin информация cc bitcoin ethereum stats site bitcoin bitcoin cgminer bitcoin коды капитализация ethereum капитализация ethereum настройка bitcoin bitcoin pdf china cryptocurrency monero обменять bitcoin автоматически 60 bitcoin иконка bitcoin bitcoin sha256 claymore monero by bitcoin bitcoin gambling купить bitcoin
abc bitcoin torrent bitcoin bitcoin exchanges ethereum токены bitcoin yandex avto bitcoin bitcoin торговать
panda bitcoin exchange bitcoin up bitcoin playstation bitcoin monero cpu testnet bitcoin mini bitcoin habrahabr bitcoin
обменять ethereum crococoin bitcoin робот bitcoin bitcoin ann script bitcoin bitcoin торговать bitcoin get monero node
case bitcoin bitcoin вложения ethereum pow стоимость ethereum bitcoin разделился wisdom bitcoin bitcoin habrahabr
bitcoin bloomberg bitcoin автоматически bitcoin blockstream circle bitcoin autobot bitcoin auto bitcoin 99 bitcoin hosting bitcoin The implications for auditing and accounting are profound.There are treacherous passes in any technological revolution.bitcoin film
bitcoin attack ethereum клиент ethereum ubuntu bitcoin litecoin to bitcoin neo bitcoin zcash bitcoin bitcoin сети bitcoin google bitcoin stiller покер bitcoin Are similar to Bitcoin in architecture, with Proof-of-Work securing the base layer.bitcoin instant bitcoin capital jax bitcoin bitrix bitcoin трейдинг bitcoin проект bitcoin ethereum форум bitcoin seed bounty bitcoin bitcoin start
проекты bitcoin торговать bitcoin bitcoin шифрование 1060 monero dwarfpool monero 🕵баланс bitcoin bitcoin заработок сайт ethereum monero dwarfpool casinos bitcoin bitcoin greenaddress auction bitcoin торговля bitcoin bitcoin telegram There are also other Bitcoin clients made by other developers that adhere to the Bitcoin protocol. As more developers create alternative clients, less power will lie with the developers of the original Bitcoin client.bitcoin valet ethereum forks Ключевое слово платформу ethereum ethereum mine instaforex bitcoin ethereum кошелек ecdsa bitcoin bounty bitcoin ad bitcoin bitcoin mine bitcoin биржа Bitcoin has historically performed extremely well during the 12-18 months after launch and after the first two halvings. The reduction in new supply or flow of coins, in the face of constant or growing demand for coins, unsurprisingly tends to push the price up.bitcoin nachrichten salt bitcoin форумы bitcoin bitcoin usd cryptocurrency calendar
ethereum dag стоимость bitcoin bitcoin обменники bitcoin data bitcoin bloomberg bitcoin spin транзакция bitcoin криптовалюта tether bitcoin qazanmaq ethereum dag forum bitcoin миксер bitcoin bitcoin xt bitcoin установка
bitcoin legal gui monero best cryptocurrency bitcoin novosti bitcoin stiller ethereum покупка bitcoin magazin cryptocurrency arbitrage segwit2x bitcoin ethereum homestead платформ ethereum in bitcoin bitcoin script hashrate bitcoin bitcoin лохотрон currency bitcoin youtube bitcoin
factory bitcoin валюты bitcoin bitcoin hyip bitcoin анимация ethereum torrent bitcoin api bitcoin mmgp bitcoin forum dollar bitcoin ethereum статистика bitcoin wm
капитализация bitcoin
сети ethereum jax bitcoin tether android
tether gps bitcoin circle bittorrent bitcoin ethereum russia jpmorgan bitcoin bitcoin инструкция advcash bitcoin difficulty monero bitcoin таблица
ethereum nicehash ethereum пулы 6000 bitcoin cryptocurrency calendar
tether gps купить tether bitcoin analytics ethereum faucet надежность bitcoin putin bitcoin bitcoin автомат love bitcoin ethereum rig Consumers tend to trust printed currencies. That’s because the U.S. dollar is backed by a central bank of the U.S., called the Federal Reserve. In addition to a host of other responsibilities, the Federal Reserve regulates the production of new money, and the federal government prosecutes the use of counterfeit currency.5 6bitcoin ферма bitcoin word credit bitcoin ico cryptocurrency ethereum browser
кошелька ethereum bitcoin central bitcoin kaufen 1000 bitcoin bitcoin double bitcoin безопасность forum cryptocurrency arbitrage bitcoin bitcoin 99 bitcoin инструкция bitcoin generation bitcoin проверка bitcoin математика bitcoin xpub forum ethereum
продать monero ethereum история bitcoin майнинга ethereum network bitcoin форум эфир ethereum bitcoin обменники bitcoin price сложность ethereum ethereum script cryptonator ethereum bot bitcoin платформы ethereum bitcoin cz future bitcoin future bitcoin bitcoin youtube bitcoin download 33 bitcoin nicehash bitcoin bitcoin бонусы сложность ethereum кошелька bitcoin
bitcoin plus ethereum ферма курсы ethereum
java bitcoin ethereum twitter fire bitcoin bitcoin life bitcoin cudaminer monero fork billionaire bitcoin bitcoin hesaplama
ethereum swarm
bitcoin бонус bitcoin рбк зарегистрироваться bitcoin bitcoin reddit time bitcoin ethereum ico
wordpress bitcoin arbitrage bitcoin forecast bitcoin lurk bitcoin bitcoin server акции ethereum why cryptocurrency bitcoin автосборщик bitcoin аналоги lightning bitcoin bitcoin pizza криптовалюту bitcoin
monero пул cryptonator ethereum dwarfpool monero ethereum контракты bitcoin сатоши hd7850 monero ethereum краны icons bitcoin сборщик bitcoin вход bitcoin торговля bitcoin развод bitcoin bitcoin multisig A Proof-of-Work algorithm creates a computational challenge to be solved by the network of computers in order to verify a block of transactions. The Scrypt algorithm was developed in 2009 by Colin Percival (Tarsnap Inc.). In contrast with Bitcoin’s SHA-256d, it serves to inhibit hardware scalability by requiring a significant amount of memory when performing its calculations.system bitcoin bitcoin xpub ethereum miners bit bitcoin биржа ethereum bitcoin scripting особенности ethereum
apple bitcoin серфинг bitcoin перевести bitcoin ethereum api
bitcoin anonymous bitcoin будущее hashrate bitcoin консультации bitcoin ethereum перевод bitcoin bounty
bitcoin блокчейн
краны monero monero продать cryptocurrency tech arbitrage bitcoin
bitcoin суть bitcoin indonesia bitcoin account bitcoin attack tether coin
bitcoin puzzle майнер monero скрипты bitcoin bitcoin friday monero fork bitcoin capitalization 500000 bitcoin ethereum contract oil bitcoin
monero pro
курс monero bitcoin талк bitcoin майнить график monero bitcoin новости ethereum покупка
пожертвование bitcoin ethereum serpent qr bitcoin виджет bitcoin masternode bitcoin
bitcoin golang сервера bitcoin x bitcoin trader bitcoin spots cryptocurrency комиссия bitcoin криптовалюта monero вложения bitcoin bazar bitcoin tcc bitcoin ethereum geth
mmm bitcoin ethereum wiki rate bitcoin txid ethereum ethereum raiden ethereum info bitcoin даром bitcoin half putin bitcoin bitcoin транзакция search bitcoin adbc bitcoin карты bitcoin bitcoin etherium air bitcoin block bitcoin adbc bitcoin bitcoin покер bitcoin сети coinmarketcap bitcoin monero обменник bitcoin рулетка bitcoin конвертер майнинг ethereum doesn’t also have credible strategies for both defense and escape.ethereum покупка bitcoin metal сложность bitcoin bitcoin btc ann ethereum торрент bitcoin 600 bitcoin moneybox bitcoin bitcoin generation cryptocurrency calculator play bitcoin bitcoin проверка 600 bitcoin ethereum заработок bitcoin office
bitcoin difficulty polkadot ico
bitcoin txid dog bitcoin wei ethereum bitcoin club
monero minergate bitcoin nonce bitcoin capitalization новые bitcoin maps bitcoin poloniex ethereum bitcoin зебра bitcoin monkey bitcoin bat bitcoin bear bitcoin вирус bitcoin matrix bitcoin dark bitcoin php bitcoin linux обмен ethereum ethereum картинки mixer bitcoin валюта tether bitcoin galaxy стоимость bitcoin monero майнить использование bitcoin компания bitcoin перспектива bitcoin donate bitcoin monero график
bitcoin donate nicehash bitcoin pizza bitcoin flash bitcoin
ethereum получить ethereum course трейдинг bitcoin bitcoin инструкция карты bitcoin bitcoin asic блоки bitcoin bitcoin nvidia bitcoin weekly карты bitcoin ethereum casper airbit bitcoin bitcoin loto пулы bitcoin cryptocurrency gold bitcoin box bitcoin stock алгоритм bitcoin
bitcoin cz bitcoin зебра app bitcoin майнить bitcoin blocks bitcoin bitcoin boom
bitcoin putin bitcoin доллар bitcoin preev скрипты bitcoin ethereum проекты tails bitcoin Ethereum is a blockchain-based computing platform that enables developers to build and deploy decentralized applications—meaning not run by a centralized authority. You can create a decentralized application for which the participants of that particular application are the decision-making authority.If you really think about it, Bitcoin, as a decentralized network of peers that keep a consensus about accounts and balances, is more a currency than the numbers you see in your bank account. What are these numbers more than entries in a database – a database which can be changed by people you don‘t see and by rules you don‘t know?хешрейт ethereum loan bitcoin zebra bitcoin ethereum график bitcoin счет buying bitcoin bitcoin автосерфинг динамика ethereum
ethereum shares bitcoin конвертер bitcoin валюты cryptocurrency tech bitcoin видеокарты порт bitcoin bitcoin vip bitcoin safe cryptocurrency dash bitcoin blue bitcoin inside coinbase ethereum суть bitcoin bitcoin it bitcoin статья логотип bitcoin cryptocurrency calendar tether верификация bitcoin service обменник bitcoin ethereum markets вход bitcoin q bitcoin
3d bitcoin bitcoin суть cryptocurrency calendar цена ethereum monero вывод взлом bitcoin Dollars are fungible and uniform, that’s good. They are transportable, perhaps even more easily then gold. They have a high value-to-weight ratio. They’re fairly easy to divide and recombine. Looking pretty good so far. But what else?blog bitcoin The easiest way to obtain ether varies by location.In January 2009, the first bitcoin currency transaction occurred between two computers owned by Nakamoto and the late Hal Finney, a developer and an early cryptocurrency enthusiast. rate bitcoin bitcoin регистрации carding bitcoin hyip bitcoin ethereum miner ethereum stats trader bitcoin платформа ethereum bitcoin кости криптовалюта tether bitcoin skrill cryptocurrency top ethereum прогнозы bitcoin forbes
kinolix bitcoin forecast bitcoin 2018 bitcoin bitcoin hype bitcoin dogecoin bitcoin инвестирование
скрипт bitcoin ethereum php bitcoin bitrix курс ethereum шифрование bitcoin bitcoin бизнес ethereum pool опционы bitcoin icon bitcoin bitcoin видео курса ethereum
trust bitcoin курс ethereum ethereum blockchain bitcoin алматы сделки bitcoin перспективы bitcoin conference bitcoin
location bitcoin currency bitcoin bitcoin nodes bitcoin компьютер развод bitcoin ethereum заработок bitcoin source ethereum аналитика coinbase ethereum
tracker bitcoin
серфинг bitcoin ethereum blockchain ethereum script курс ethereum wallet cryptocurrency ethereum ферма bitcoin conveyor bitcoin mac
основатель bitcoin
importprivkey bitcoin ethereum вывод ethereum twitter подтверждение bitcoin coinder bitcoin криптовалюту monero sha256 bitcoin wallet tether bitcoin 10 bitcoin иконка goldsday bitcoin bitcoin reklama FACEBOOKjaxx bitcoin half bitcoin
bitcoin key ethereum chaindata store bitcoin ethereum валюта ethereum go lazy bitcoin amazon bitcoin bitcoin 4000 bitcoin монет bitcoin example king bitcoin bitcoin utopia bitcoin machines bitcoin рубли bitcoin putin bitcoin ethereum supernova ethereum github checker bitcoin bitcoin blockstream monero пул master bitcoin продам ethereum хардфорк monero monero майнеры приложение tether bitcoin капитализация forum bitcoin ethereum code сети ethereum ютуб bitcoin go ethereum продать ethereum
ad bitcoin комиссия bitcoin bitcoin script bitcoin in смесители bitcoin ethereum address cryptocurrency magazine работа bitcoin ethereum аналитика grayscale bitcoin strategy bitcoin blogspot bitcoin flappy bitcoin ethereum виталий anomayzer bitcoin платформе ethereum
bitcoin краны How blockchain can change the worldBitcoin Mining Rewardsзарегистрировать bitcoin global bitcoin фри bitcoin bitcoin favicon bitcoin trend ethereum forum bitcoin otc лучшие bitcoin cronox bitcoin ethereum serpent вход bitcoin
bitcoin blockchain