{"id":7319,"date":"2021-05-16T23:34:00","date_gmt":"2021-05-16T20:34:00","guid":{"rendered":"https:\/\/alfacash.blog\/?p=7319"},"modified":"2024-02-19T21:51:46","modified_gmt":"2024-02-19T18:51:46","slug":"faq-kryptokurvor-fororeningar-klimatforandringar","status":"publish","type":"post","link":"https:\/\/alfacash.blog\/sv\/2021\/05\/16\/faq-kryptokurvor-fororeningar-klimatforandringar\/","title":{"rendered":"FAQ: Kryptovalutor, f\u00f6roreningar och klimatf\u00f6r\u00e4ndringar"},"content":{"rendered":"<p>Du m\u00e5ste ha h\u00f6rt det redan: kryptovalutor \u00e4r inte s\u00e4rskilt milj\u00f6v\u00e4nliga. De har en d\u00e5lig milj\u00f6p\u00e5verkan, de \u00f6kar klimatf\u00f6r\u00e4ndringarna, de \u00e4r \u201den milj\u00f6katastrof\u201d [Agustin Carstens], och s\u00e5 vidare. \u00c4r allt detta sant? Kryptovalutor producerar f\u00f6roreningar och bidrar till klimatf\u00f6r\u00e4ndringar?<\/p>\n\n\n\n<p>Nyligen, <a href=\"https:\/\/alfacash.blog\/2021\/05\/13\/tesla-rejects-bitcoin-environmental-concerns-its-right\/\" target=\"_blank\" rel=\"noreferrer noopener\">Tesla stannade<\/a> accepterar Bitcoin (BTC) betalningar <strong>f\u00f6r att betrakta det som \u201den stor kostnad f\u00f6r milj\u00f6n\u201d.<\/strong> Hur kan detta vara? De \u00e4r digitala, eller hur? De spottar inte precis svart r\u00f6k till den klara himlen. Tja, nu \u00e4r det dags att l\u00f6sa alla dina tvivel om detta. &nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Kryptovalutor = f\u00f6roreningar? Varf\u00f6r?<\/strong><\/h2>\n\n\n\n<p>Till att b\u00f6rja med kan inte alla kryptovalutor orsaka f\u00f6roreningar. Den verkliga fr\u00e5gan kommer fr\u00e5n <a href=\"https:\/\/alfacash.blog\/2020\/08\/25\/cryptocurrency-mining-dummies-how-works\/\" target=\"_blank\" rel=\"noreferrer noopener\">Proof-of-Work (PoW) gruvdrift<\/a>. Den h\u00e4r \u00e4r en algoritm, och med &quot;algoritm&quot; menar vi en upps\u00e4ttning steg och metoder som \u00e4r byggda (med matematik) f\u00f6r att uppn\u00e5 ett specifikt resultat eller l\u00f6sa ett problem. Det \u00e4r precis vad PoW g\u00f6r: att utveckla ett sv\u00e5rt matteproblem eller en g\u00e5ta som gruvarbetarna m\u00e5ste l\u00f6sa f\u00f6r att verifiera virtuella transaktioner och &quot;extrahera&quot; n\u00e5gra mynt.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-1024x682.jpg\" alt=\"bitcoin-mynt-handfull-pl\u00e5nbok\" class=\"wp-image-5779\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-1024x682.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-300x200.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-150x100.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-270x180.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-770x513.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-762x508.jpg 762w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-773x515.jpg 773w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-370x247.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-554x369.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-306x204.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-368x245.jpg 368w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-260x173.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280-87x58.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hands-4348717_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p>Gruvarbetarna t\u00e4vlar med de andra om att \u201dhitta\u201d mynten f\u00f6rst, och deras totala ber\u00e4kningskraft hj\u00e4lper till att s\u00e4kra n\u00e4tverket. \u00c4nd\u00e5 l\u00e5ter det inte s\u00e4rskilt f\u00f6rorenande, eller hur? Problemet \u00e4r den g\u00e5tan. Ingen kan verkligen l\u00f6sa det med den hastighet som kr\u00e4vs f\u00f6r att t\u00e4vla. Endast datorer och vissa specialiserade enheter (<a href=\"https:\/\/alfacash.blog\/2020\/11\/21\/easy-crypto-miners-how-mine-cryptocurrencies-problems\/\" target=\"_blank\" rel=\"noreferrer noopener\">ASIC -gruvarbetare<\/a>) kan g\u00f6ra det. Och inte ensam: de kr\u00e4ver mycket el f\u00f6r att f\u00f6rs\u00f6ka om och om igen tills de tr\u00e4ffar l\u00f6sningen. D\u00e4rav &quot;arbetet&quot; i beviset.<\/p>\n\n\n\n<p><strong>S\u00e5, om du inte visste, \u00e4r mycket el vanligtvis lika med mer f\u00f6rorening, <\/strong>beroende p\u00e5 var energin kommer ifr\u00e5n. Kol och andra fossila br\u00e4nslen \u00e4r vanliga k\u00e4llor till elkraft v\u00e4rlden \u00f6ver. D\u00e4rf\u00f6r, om energin f\u00f6r att bryta kryptovalutor kommer fr\u00e5n kol, skulle det inneb\u00e4ra mer skadliga utsl\u00e4pp till planeten. &nbsp;<\/p>\n\n\n\n<p>\u00c5 andra sidan har vi ASIC -maskiner. De var speciellt utformade f\u00f6r att bryta kryptovalutor och inget annat. De kommer dock inte att h\u00e5lla mycket tid, eftersom sv\u00e5righeten att bryta kryptor alltid \u00f6kar med antalet gruvarbetare som g\u00e5r med i n\u00e4tverket (av s\u00e4kerhetssk\u00e4l). N\u00e4r den anv\u00e4ndbara perioden slutar (cirka 1,5 \u00e5r) kan de <a href=\"https:\/\/digiconomist.net\/bitcoin-electronic-waste-monitor\/\" target=\"_blank\" rel=\"noreferrer noopener\">bli e-avfall<\/a> och i princip l\u00e4gga till mer kryptovalutas skr\u00e4p till h\u00f6gen av f\u00f6roreningar.<\/p>\n\n\n\n<p>Naturligtvis h\u00e4nder detta bara med PoW -kryptokurvor. Andra system, som Proof-of-Stake (PoS), har inte detta gruvproblem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Vilka kryptos producerar f\u00f6roreningar och vilka g\u00f6r det inte?<\/strong><\/h2>\n\n\n\n<p>Det \u00e4r ett komplicerat svar. \u00c4ven n\u00e4r det g\u00e4ller PoW -kryptovalutor, <strong>allt beror p\u00e5 energik\u00e4llan och de alternativa anv\u00e4ndningsomr\u00e5dena f\u00f6r ASIC.<\/strong> De flesta gruvarbetare v\u00e4ljer platser d\u00e4r den dominerande energik\u00e4llan \u00e4r f\u00f6rnybar, och n\u00e5gra av dem anv\u00e4nder redan sina ASIC f\u00f6r ytterligare funktioner, t.ex. <a href=\"https:\/\/twitter.com\/Jonbros01\/status\/1064224854164074497?ref_src=twsrc%5Etfw\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">uppv\u00e4rmning<\/a> eller odling av tomater (<a href=\"https:\/\/twitter.com\/KamilBrejcha\/status\/972438246528569344\" target=\"_blank\" rel=\"noreferrer noopener\">verkligen<\/a>).<\/p>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Vem skulle kunna f\u00f6rest\u00e4lla sig att brytning av kryptovalutor och jordbruk kan fungera tillsammans? Den f\u00f6rsta satsen med kryptomat \u00e4r redo att sk\u00f6rdas. Vi anv\u00e4nder \u00f6verskottsv\u00e4rmen till tomatv\u00e4xthuset och det fungerar :-) <a href=\"https:\/\/t.co\/U7qqKTshqO\">pic.twitter.com\/U7qqKTshqO<\/a><\/p>- Kamil Brejcha (@KamilBrejcha) <a href=\"https:\/\/twitter.com\/KamilBrejcha\/status\/972438246528569344?ref_src=twsrc%5Etfw\">10 mars 2018<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p>Vi kan ocks\u00e5 t\u00e4nka p\u00e5 att det finns \u201dl\u00e4ttare\u201d PoW -versioner. De kr\u00e4ver inte att ASIC fungerar, bara datorer, och energif\u00f6rbrukningen \u00e4r m\u00e5ttlig. S\u00e5 \u00e4r fallet f\u00f6r <a href=\"https:\/\/alfacash.blog\/2021\/03\/29\/discover-monero-how-use-it-full-privacy\/\" target=\"_blank\" rel=\"noreferrer noopener\">Monero (XMR)<\/a>, till exempel. I motsats till det \u00e4r Bitcoin fortfarande det sv\u00e5raste myntet att gruva och kr\u00e4ver mycket energi och ASIC. Det \u00e4r d\u00e4rf\u00f6r dess gruvarbetare vanligtvis v\u00e4ljer de billigare f\u00f6rnybara k\u00e4llorna.<\/p>\n\n\n\n<p>Enligt <a href=\"https:\/\/cryptoslate.com\/coins\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">CryptoSlate<\/a>, det finns \u00f6ver 406 PoW -mynt. De inneh\u00e5ller flera av de mest popul\u00e4ra: Bitcoin, <a href=\"https:\/\/alfacash.blog\/2020\/11\/04\/what-litecoin-ultimate-history-silver-cryptocurrencies\/\" target=\"_blank\" rel=\"noreferrer noopener\">Litecoin (LTC),<\/a> Bitcoin Cash (BCH), Ethereum (ETH), <a href=\"https:\/\/alfacash.blog\/2020\/09\/18\/little-story-dogecoin-shiba-inus-cryptocurrency\/\" target=\"_blank\" rel=\"noreferrer noopener\">Dogecoin (DOGE),<\/a> Zcash (ZEC) och Monero (XMR).<strong> P\u00e5 andra sidan finns det \u00f6ver 546 PoS-liknande mynt,<\/strong> Inklusive <a href=\"https:\/\/alfacash.blog\/2021\/02\/27\/bitcoin-goes-down-cardano-reaches-new-heights\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cardano (ADA)<\/a>, Polkadot (DOT), Stellar (XLM), Cosmos (ATOM), Tron (TRX), Tezos (XTZ), Lisk (LSK), DASH, XRP och EOS.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Hur mycket energi f\u00f6rbrukar PoW -kryptos?<\/strong><\/h2>\n\n\n\n<p>Vi kan inte veta det s\u00e4kert, men vi har n\u00e5gra \u00f6versikter f\u00f6r Bitcoin. Enligt Cambridge Bitcoin elf\u00f6rbrukning (<a href=\"https:\/\/cbeci.org\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">CBEI<\/a>), F\u00f6rbrukar Bitcoin cirka 148 TWh per \u00e5r, vilket \u00e4r mer \u00e4n Sverige, Ukraina eller Nederl\u00e4nderna. F\u00f6r sin del, <a href=\"https:\/\/digiconomist.net\/bitcoin-energy-consumption\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Digikonom<\/a> ber\u00e4knar en siffra p\u00e5 cirka 117 TWh \u00e5rligen.<\/p>\n\n\n\n<p>Samtidigt, som beskrivs av CBEI, <strong>Bitcoin st\u00e5r bara f\u00f6r 0,69% av den totala energif\u00f6rbrukningen v\u00e4rlden \u00f6ver.<\/strong> Dessutom kan &quot;m\u00e4ngden el som f\u00f6rbrukas varje \u00e5r av alltid p\u00e5 men inaktiva hush\u00e5llsenheter i USA ensamma driva Bitcoin-n\u00e4tverket i 1,5 \u00e5r&quot;. Om vi j\u00e4mf\u00f6r det med andra &quot;former av pengar&quot; kan vi ocks\u00e5 s\u00e4ga det <a href=\"https:\/\/cryptowords.github.io\/bitcoin-and-energy-consumption-rebuttal\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">bankbranschen<\/a> f\u00f6rbrukar \u00f6ver 639 TWh \u00e5rligen och guldbrytning f\u00f6rbrukar \u00f6ver 139 TWh \u00e5rligen.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignleft size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters.jpg\" alt=\"Kryptovalutor-f\u00f6roreningar-energif\u00f6rbrukning\" class=\"wp-image-7321\" width=\"383\" height=\"407\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters.jpg 501w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-283x300.jpg 283w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-141x150.jpg 141w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-11x12.jpg 11w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-170x180.jpg 170w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-485x515.jpg 485w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-478x508.jpg 478w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-348x370.jpg 348w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-439x466.jpg 439w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-306x325.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-231x245.jpg 231w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-188x200.jpg 188w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-287x305.jpg 287w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/Energy-consumption-by-cryptocurrency.-Source-TRG-Datacenters-63x67.jpg 63w\" sizes=\"auto, (max-width: 383px) 100vw, 383px\" \/><figcaption>Energif\u00f6rbrukning genom kryptovaluta. K\u00e4lla: TRG Datacenters<\/figcaption><\/figure><\/div>\n\n\n\n<p>Ut\u00f6ver Bitcoin f\u00f6rbrukar Ethereum cirka 48 TWh \u00e5rligen [<a href=\"https:\/\/digiconomist.net\/ethereum-energy-consumption\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Digikonom<\/a>]. Dessutom, f\u00f6rra m\u00e5naden, f\u00f6retaget <a href=\"https:\/\/www.trgdatacenters.com\/most-environment-friendly-cryptocurrencies\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">TRG Datacenters<\/a> ber\u00e4knat antalet f\u00f6rbrukade kWh per transaktion i olika kryptovalutor.<\/p>\n\n\n\n<p>Som vi kommer att se senare har energif\u00f6rbrukningen mycket att g\u00f6ra med f\u00f6roreningar och klimatf\u00f6r\u00e4ndringar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Var kommer det fr\u00e5n energin att bryta kryptor?<\/strong><\/h2>\n\n\n\n<p>Som vi n\u00e4mnde tidigare v\u00e4ljer gruvarbetarna vanligtvis de billigare f\u00f6rnybara k\u00e4llorna. Firman <a href=\"https:\/\/coinshares.com\/assets\/resources\/Research\/bitcoin-mining-network-june-2019-fidelity-foreword.pdf\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">CoinShares<\/a> r\u00e4knade ut det&nbsp;<strong>\u00f6ver 74% av Bitcoin gruvdrift anv\u00e4nder f\u00f6rnybara energik\u00e4llor, s\u00e5som vattenkraft, sol och geotermi<\/strong>. \u00c5 andra sidan uppger CBEI att 65% av Bitcoin -gruvdrift har tillverkats i Kina. I det h\u00e4r landet stod kol f\u00f6r 56,8% f\u00f6r inhemsk energiproduktion \u00e5r 2020 [<a href=\"https:\/\/www.cnbc.com\/2021\/04\/29\/climate-china-has-no-other-choice-but-to-rely-on-coal-power-for-now.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">CNBC<\/a>]. Och det \u00e4r d\u00e5liga nyheter f\u00f6r kryptovalutor och f\u00f6roreningar.<\/p>\n\n\n\n<p>Men det finns alternativa teorier. Innan vi pratar om det b\u00f6r vi l\u00e4ra oss vad som \u00e4r icke-rivaliserande energi. \u201dIcke-konkurrerande varor \u00e4r allm\u00e4nna varor. Alla har tillg\u00e5ng till att anv\u00e4nda dem, och deras anv\u00e4ndning f\u00f6rs\u00e4mrar inte deras tillg\u00e4nglighet f\u00f6r framtida bruk \u201d[<a href=\"https:\/\/askinglot.com\/what-is-a-nonrival-resource\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Askinglot<\/a>]. Inom energisektorn betyder det vanligtvis \u00f6verskott (och bortkastad) energi som ingen kommer att anv\u00e4nda eftersom efterfr\u00e5gan redan \u00e4r fylld.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-1024x576.jpg\" alt=\"bitcoin-tesla-gr\u00f6n-energi\" class=\"wp-image-7315\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-1024x576.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-300x169.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-150x84.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-18x10.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-270x152.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-770x433.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-903x508.jpg 903w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-900x506.jpg 900w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-370x208.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-554x312.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-306x172.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-260x146.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280-87x49.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/light-bulb-984551_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p>S\u00e5, talar om <a href=\"https:\/\/alfacash.blog\/2021\/03\/11\/top-countries-most-crypto-users-laws\/\" target=\"_blank\" rel=\"noreferrer noopener\">Kina gruvarbetare<\/a>, de verkar i vissa specifika provinser: Xinjiang, Sichuan, Inre Mongoliet och Yunnan [CBEI]. Energin \u00e4r \u00f6verfl\u00f6dig och delvis f\u00f6rnybar d\u00e4r inne. D\u00e4rf\u00f6r, <strong>det \u00e4r troligt att de flesta Bitcoin-gruvarbetare i Kina anv\u00e4nder icke-rivaliserande energi, <\/strong>som beskrivits av <a href=\"https:\/\/medium.com\/@nic__carter\/noahbjectivity-on-bitcoin-mining-2052226310cb\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Nic Carter<\/a>, medgrundare av Coinmetrics.<\/p>\n\n\n\n<p>N\u00e4r det g\u00e4ller resten av PoW -mynten kan vi bara gissa. Till exempel det mesta av gruvdriften <a href=\"https:\/\/blockchair.com\/es\/litecoin\/nodes\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">noder av Litecoin<\/a> finns i USA, Tyskland och Frankrike. I dessa l\u00e4nder st\u00e5r den f\u00f6rnybara energin f\u00f6r 20% [<a href=\"https:\/\/www.eia.gov\/tools\/faqs\/faq.php?id=92&amp;t=4#:~:text=In%202020%2C%20renewable%20energy%20sources,about%2020%25%20of%20electricity%20generation.&amp;text=Preliminary%20data.\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">MKB<\/a>], 46.3% [<a href=\"https:\/\/www.reuters.com\/article\/germany-power-renewables-idUKKBN28O1AH\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Reuters<\/a>] och 33.2% [<a href=\"https:\/\/renews.biz\/63340\/france-renewables-capacity-swells-to-547gw\/#:~:text=Renewable%20energy%20contributed%2033.2%25%20to,the%20same%20quarter%20in%202019.\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">F\u00f6rnyar<\/a>], respektive.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Varf\u00f6r \u00e4ndrar inte Bitcoin (och andra) gruvdriften?<\/strong><\/h2>\n\n\n\n<p>Det l\u00e5ter som en enkel l\u00f6sning, eller hur? Varf\u00f6r \u00f6verger inte PoW -mynt detta system och ers\u00e4tter det med PoS? Tja, det \u00e4r verkligen inte s\u00e5 l\u00e4tt. F\u00f6rst och fr\u00e4mst, l\u00e5t oss komma ih\u00e5g <a href=\"https:\/\/alfacash.blog\/2021\/01\/24\/what-proof-of-stake-pos-coins-passive-income\/\" target=\"_blank\" rel=\"noreferrer noopener\">vad Proof-of-Stake \u00e4r<\/a>. I PoS -system (och mynt) ers\u00e4tts &quot;gruvarbetarens&quot; figur med &quot;validatorn&quot;. Denna validator, som kan vara vem som helst, beh\u00f6ver inte energi eller specialiserade maskiner. Ist\u00e4llet, vad de kommer att g\u00f6ra \u00e4r att l\u00e5sa en viss m\u00e4ngd inhemska tokens som de tidigare skaffat inuti en speciell pl\u00e5nbok.&nbsp;<\/p>\n\n\n\n<p>S\u00e5 de kommer att f\u00e5 r\u00e4tt att verifiera transaktioner och mynta nya mynt, om det beh\u00f6vs, och n\u00e4stan automatiskt. Och de kommer att bel\u00f6nas f\u00f6r det, som en passiv inkomst. Men allt \u00e4r inte perfekt.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-1024x682.jpg\" alt=\"\" class=\"wp-image-5920\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-1024x682.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-300x200.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-150x100.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-270x180.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-770x513.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-762x508.jpg 762w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-773x515.jpg 773w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-370x247.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-554x369.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-306x204.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-368x245.jpg 368w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-260x173.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1-87x58.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/scam-4126798_1280-1.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p><strong>Det finns en risk att n\u00e5gra skickliga utvecklare kopierar (gafflar) blockchain<\/strong> och hoppar mellan den ursprungliga kedjan d\u00e4r de redan spenderade pengarna och den nya kedjan d\u00e4r de inte gjorde det, till exempel (och dubbla spendera samma mynt). Det finns inget &quot;arbete&quot; f\u00f6r att verifiera transaktionerna h\u00e4r, bara intressenter. Detta kallas &quot;<a href=\"https:\/\/smithandcrown.com\/glossary\/nothing-stake-problem\/#:~:text=The%20%E2%80%9Cnothing%2Dat%2Dstake,%2Dof%2Dstake%20consensus%20mechanisms.\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Inget-p\u00e5-insatsproblem<\/a>\u201dEftersom det i den nya (kopierade) kedjan inte finns n\u00e5got att f\u00f6rlora om du fuskar.<\/p>\n\n\n\n<p>S\u00e5, PoW -system \u00e4r fortfarande mer robusta och s\u00e4kra. Det \u00e4r d\u00e4rf\u00f6r de flesta utvecklare och anv\u00e4ndare fortfarande h\u00e5ller fast vid PoW, trots dess nackdelar. <a href=\"https:\/\/alfacash.blog\/2020\/11\/14\/ethereum-2-new-features-prices-more-ethereum-chains\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ethereum \u00e4r ett annat fall<\/a>, fast\u00e4n. Det \u00e4r redan p\u00e5 g\u00e5ng att \u00f6verge PoW och omfamna PoS. I framtiden kan ett annat system, b\u00e4ttre \u00e4n PoW eller PoS, visas. I s\u00e5 fall skulle Bitcoin och andra krypto f\u00f6rmodligen migrera till det systemet. &nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u00d6kar kryptovalutor klimatf\u00f6r\u00e4ndringarna?<\/strong><\/h2>\n\n\n\n<p>Energif\u00f6rbrukningen leder oss till koldioxidavtrycket (f\u00f6roreningar), vilket kan leda till klimatf\u00f6r\u00e4ndringar p\u00e5 l\u00e5ng sikt. <a href=\"https:\/\/blueskymodel.org\/kilowatt-hour\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">BlueSkyModel<\/a> ber\u00e4knar att i genomsnitt ger en kilowattimme en drygt ett kilo (0,45 kg) koldioxid (CO2). Med tanke p\u00e5 detta och data fr\u00e5n Digiconomist, <strong>Bitcoin skulle producera cirka 55,86 Mt CO2 \u00e5rligen.<\/strong><\/p>\n\n\n\n<p>\u00c5 andra sidan f\u00f6rbrukar bankindustrin cirka 639 TWh \u00e5rligen. D\u00e5 skulle denna industri ensam sl\u00e4ppa ut cirka 319,5 Mt CO2 i atmosf\u00e4ren. <a href=\"https:\/\/alfacash.blog\/2020\/10\/26\/bitcoin-can-compete-gold-states-investment-bank-jpmorgan\/\" target=\"_blank\" rel=\"noreferrer noopener\">Guld gr\u00e4vning<\/a>\u00e5 sin sida f\u00f6rbrukar cirka 138,9 TWh per \u00e5r, vilket inneb\u00e4r 69,4 Mt CO2. De totala utsl\u00e4ppen f\u00f6r globala boskap \u00e4r \u00e4nnu mer fantastiska: 7,1 Gt CO2 \u00e5rligen [<a href=\"http:\/\/www.fao.org\/news\/story\/es\/item\/197623\/icode\/#:~:text=Total%20emissions%20from%20global%20livestock,of%20all%20anthropogenic%20GHG%20emissions.\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">FN: s FAO<\/a>]. Men vi m\u00e5ste \u00e4ta. S\u00e5 allt handlar om perspektiv.<\/p>\n\n\n\n<p>Enligt <a href=\"https:\/\/news.climate.columbia.edu\/2019\/07\/30\/co2-drives-global-warming\/#:~:text=Scientists%20say%20that%20if%20CO2,two%20and%20five%20degrees%20Celsius.\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Columbia Climate School<\/a>, \u201dForskare s\u00e4ger att om CO2 f\u00f6rdubblas kan det h\u00f6ja den genomsnittliga globala temperaturen p\u00e5 jorden mellan tv\u00e5 och fem grader Celsius\u201d i slutet av detta \u00e5rhundrade (2100). Men Bitcoin och kryptovalutor \u00e4r l\u00e5ngt ifr\u00e5n det st\u00f6rsta problemet i f\u00f6roreningen av planeten.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"439\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF.jpg\" alt=\"\" class=\"wp-image-6469\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF.jpg 735w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF-300x179.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF-150x90.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF-270x161.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF-370x221.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF-554x331.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF-306x183.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF-260x155.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/01\/Bitcoin-is-far-behind-the-biggest-energy-consumers-in-the-world.-Source-CCAF-87x52.jpg 87w\" sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><figcaption>Bitcoin ligger l\u00e5ngt efter de st\u00f6rsta energikonsumenterna i v\u00e4rlden. K\u00e4lla: CCAF<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Finns det en l\u00f6sning p\u00e5 PoW -problemet?<\/strong><\/h2>\n\n\n\n<p>Detta \u00e4r ett p\u00e5g\u00e5ende arbete, men det finns flera initiativ f\u00f6r gruvdrift med f\u00f6rnybar energi. Sent i fjol, f\u00f6retaget Square <a href=\"https:\/\/www.businesswire.com\/news\/home\/20201208005461\/en\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">meddelat<\/a> skapandet av Bitcoin Clean Energy Investment Initiative. De siktar p\u00e5 att g\u00f6ra denna bransch till en koldioxidsn\u00e5l bidragsgivare.<\/p>\n\n\n\n<p>I samma ven, <a href=\"https:\/\/alfacash.blog\/2021\/03\/08\/bitcoin-ethereum-go-bullish-again-new-investments\/\" target=\"_blank\" rel=\"noreferrer noopener\">f\u00f6rra m\u00e5naden<\/a>, den norska energigiganten Aker Solutions tillk\u00e4nnagav skapandet av Seetee, ett nytt kryptofokuserat dotterbolag. <strong>De menar ocks\u00e5 att fr\u00e4mja Bitcoin -gruvdrift med f\u00f6rnybara k\u00e4llor.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-1024x683.jpg\" alt=\"kryptovalutor-f\u00f6roreningar-f\u00f6rnybar energi\" class=\"wp-image-7326\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-1024x683.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-300x200.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-150x100.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-1536x1024.jpg 1536w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-270x180.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-770x513.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-762x508.jpg 762w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-773x515.jpg 773w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-370x247.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-554x369.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-306x204.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-368x245.jpg 368w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-260x173.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/sky-1392241_1920-87x58.jpg 87w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>BIld av Alexas_Fotos fr\u00e5n Pixabay<\/figcaption><\/figure><\/div>\n\n\n\n<p>N\u00e4r det g\u00e4ller e-avfall som orsakas av f\u00f6r\u00e5ldrade ASIC \u00e4r det fortfarande ett problem som beh\u00f6ver mer uppm\u00e4rksamhet. Vissa m\u00e4nniskor har f\u00f6reslagit att \u00e5teranv\u00e4nda dem i projekt som <a href=\"https:\/\/foldingathome.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">Folding@home<\/a> av Stanford. M\u00e5let h\u00e4r \u00e4r att ge ber\u00e4kningskraft till sina system, f\u00f6r att simulera proteindynamik och p\u00e5 s\u00e5 s\u00e4tt utveckla ny terapi f\u00f6r en m\u00e4ngd olika sjukdomar. De fokuserar p\u00e5 COVID-19 just nu.<\/p>\n\n\n\n<p>Det \u00e4r sv\u00e5rt att veta vad som kommer att ge framtiden. Men kryptovalutor f\u00f6rbereder sig, inklusive f\u00f6roreningsdelen.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><em>Vill du se den h\u00e4r historien i en video? Vi har dig!<\/em><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"\u00c4r Bitcoin d\u00e5ligt f\u00f6r milj\u00f6n?\" width=\"770\" height=\"433\" src=\"https:\/\/www.youtube.com\/embed\/hXaQUy-8kek?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Vill du handla Bitcoin och andra tokens? Du kan g\u00f6ra det<\/em>\u00a0<em>s\u00e4kert\u00a0<a href=\"https:\/\/www.alfa.cash\/buy\/bitcoin\" target=\"_blank\" rel=\"noreferrer noopener\">p\u00e5 Alfacash<\/a>! Och gl\u00f6m inte att vi pratar om detta och m\u00e5nga andra saker p\u00e5 v\u00e5ra sociala medier.<\/em><\/p>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/twitter.com\/alfacash_crypto\" target=\"_blank\" rel=\"noreferrer noopener\">Twitter<\/a>&nbsp;*&nbsp;<a href=\"https:\/\/t.me\/AlfacashCommunity\" target=\"_blank\" rel=\"noreferrer noopener\">Telegram<\/a>&nbsp;*&nbsp;<a href=\"https:\/\/www.facebook.com\/alfacashstore\" target=\"_blank\" rel=\"noreferrer noopener\">Facebook<\/a>&nbsp;*&nbsp;<a href=\"https:\/\/www.instagram.com\/alfacashstore\" target=\"_blank\" rel=\"noreferrer noopener\">Instagram<\/a> * <a href=\"https:\/\/www.youtube.com\/channel\/UCOl4fdRHj8AseQ5b6z9udaw\" target=\"_blank\" rel=\"noreferrer noopener\">Youtube<\/a>&nbsp;*&nbsp;<a href=\"https:\/\/vk.com\/alfacashcrypto\" target=\"_blank\" rel=\"noreferrer noopener\">Vkontakte<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Krypton spottar inte exakt svart r\u00f6k. S\u00e5 producerar kryptovalutor verkligen f\u00f6roreningar? P\u00e5 vilket s\u00e4tt? Nu \u00e4r det dags att uppt\u00e4cka det!<\/p>","protected":false},"author":5,"featured_media":7327,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[48],"tags":[329,61,319,330,72,331,181,332],"class_list":{"0":"post-7319","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-learn","8":"tag-climate-change","9":"tag-cryptocurrencies","10":"tag-energy","11":"tag-environment","12":"tag-mining","13":"tag-pollution","14":"tag-pos","15":"tag-pow"},"featured_image_src":"https:\/\/alfacash.blog\/wp-content\/uploads\/2021\/05\/04-scaled.jpg","author_info":{"display_name":"Isabel P\u00e9rez","author_link":"https:\/\/alfacash.blog\/sv\/author\/isabel\/"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v25.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>FAQ: Cryptocurrencies, pollution, and climate change - alfa.cash blog<\/title>\n<meta name=\"description\" content=\"Cryptos aren&#039;t exactly spitting black smoke. So, are cryptocurrencies really producing pollution? How? Now it&#039;s time to discover it!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/alfacash.blog\/sv\/2021\/05\/16\/faq-kryptokurvor-fororeningar-klimatforandringar\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FAQ: Cryptocurrencies, pollution, and climate change\" \/>\n<meta property=\"og:description\" content=\"Cryptos aren&#039;t exactly spitting black smoke. So, are cryptocurrencies really producing pollution? How? 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