What Is Bitcoin? A Beginnner's Guide (2020 Edition
What Is Bitcoin? A Beginnner's Guide (2020 Edition
Bitcoin Divisibility: Satoshis & Units | ChainBytes
Units - Bitcoin Wiki
Bitcoin Units and Denominations: A Simple Breakdown From 1
Bitcoin Units And Denominations: Satoshi, Finney, MicroBit
Microbitcoin or Bits is an objectively superior unit. 1 bit = 0.33 cents
I know this has been discussed to death several years ago, but we're going to have to deal with this at some point. Microbitcoins or bits is a much better unit of account than bitcoin. For those who haven't seen it before, here's the rationale: 1) How many times have you heard "Bitcoin is too expensive" from people who assume they can't buy a fraction? Yes, I know that people who say this are ignorant. But the fact remains that because the bitcoin unit is too large, there's a significant amount of money sitting on the sidelines for no good reason. 2) The way we write numbers is biased toward smaller units. We do not put thousands separators after the decimal, but we do put them before. Let's try discerning the cost of small vs tiny items, and large vs huge items, in both bitcoin and bits: Bitcoin:
1mb of mobile data = 0.000003
Access to news article = 0.00003
New car = 10
A house = 100
1mb of mobile data = 3
Access to news article = 30
New car = 10,000,000
A house = 100,000,000
Note that everything is pretty easy to distinguish except the price of 1mb mobile data vs access to a news article, in bitcoin. It's too hard to notice the difference between four and five leading zeros. This will cause many users to accidentally send or accept payments that are off by a factor of ten. This is a poor user experience. Admit it, you've already screwed this up with mining fees. 3) mBTC or millibits is not good enough. There's still too many digits after the decimal, and this will only get worse as bitcoin appreciates in value, resulting in the need for yet another migration of units in the future. Bits is as future-proof as we can get. What can we do about it?
If your software has a setting for bits/microbitcoin, use it
If it doesn't, ask your software or service providers to add it.
When speaking to others about bitcoin amounts, use the bits/microbitcoin unit. It's easy for them to mentally convert if they need to. To demonstrate: answer as quickly as possible: how many bitcoin is 50 million bits? Boom. 50. Now answer this: how many bits is 0.0005 bitcoin? Uhhhh.... too slow.
ALL of the arguments to implement SegWit and ALL of the arguments against raising the block size limit in one complete extensive overview!
All of the reasons to NOT raise the block size limit: 1). If the chain history grows too fast, it may price out some users from running Bitcoin nodes because they can't afford the disk space to store this history, and full Bitcoin nodes must keep the entire blockchain history. All of the reasons to implement SegWit: 1). It makes it possible for Blockstream to control Bitcoin. source1.source2.source3.source4.source5.souce6 Edit170822:addedsource5(SegWit) Edit170824:addedsource6(Bitcointhroughthelooking-glass)
Thoughts on the current state of Bitcoin from someone who participates in much of the ecosystem [and tipping thread ;) ]
Hey guys, So this is something I've been looking at for a while now, and kind of seeing some things die and other things be born. Some things are getting easier, and other things getting more difficult. I want to take this time to outline the last few months and how my sentiment is reflected towards the market. I have to say, the market generally matches how my "emotions" playout towards the ecosystem as a whole. I'll outline just a few short things on both the bearish and the bullish sides of my sentiment, even if things don't effect the overall sentiment much (at least according to most traders and people) I'd like to point them out because I view them as notable. Some of the not so good things that have been happening:
Home Mining/Trading/Altcoins: Not too long ago mining was still fun for the home miner with nothing but a GPU. I'm talking a mere couple months. The altcoin section of bitcointalk is/was by far the most active. People didn't care if the coins were in fact pump and dumps or not, but people would bet on their horses and either flourish (like some of my friends did with Mazacoin) or, if got in at the wrong time, was utterly decimated. Darkcoin was a small revival of that hype, but now the market caps of these altcoins and "pump and dump" coins, have all been figured out by the community, and too many of us have been burned to support any alt coin much anymore. I still hold some, but I often ask myself why I even bother? I left 1 BTC worth of alts in cryptsy months ago, and now its a a mere fraction of that, as you could imagine. This sounds like a good thing, but those same months ago, I had a couple friends mining with GPU's and figuring the whole crypto world out. Now they maybe have $100 worth of bitcoins for shits, but they are most certainly not going to go out and buy any Antminer S3's or other similar relatively cheap miner. Gamer nerds are quite simply, priced out now for the most part.
Gambling World: The gambling world (up until a couple days ago, but I'll get to that later) didn't have much development or innovation, and user growth was probably (after the Just-Dice incident in particular) in a negative spiral. It seems that if you've followed the BTC gambling scene for a while, you've seen sites come and go (much like altcoins), and for those of us that don't check the forums and reddit everyday, a lot of consumers or newbies could have been burned hard by some of this.
"Good news" brings the price down: This seems to be counter-intuitive to most, but to some of us bitcoiners who trade/forecast/follow the markets a little closer, and not only that, are familiar with trading other assets as well, definitely get skid-dish of this apparent ecosystem flourishing without a quickly growing community to back it up. (Sure our reddit subscriber count is going through the roof, but how about our active users? You look at the trading volume, transaction volume, or real user growth etc. it just seems like it isn't growing that fast (But this isn't that bad, and there are things all of us can do to help that, I'll get to that below, DON'T WORRY, this isn't a whiney, complainy bear thread).
Waning enthusiasm for the broader ecosystem: It seems people are almost numb to all the good news, and the bad news just sends us into a panic. Granted, the amount of bad news since Gox/China has been pretty damn minuscule other than bigger ecosystem and development problems. The amount of sites I involve myself in the cryptosphere has been cut into a fifth or less of what I used to do. Think coindesk, The bitcoingroup talks (which seem to have dropped off a bit in popularity, no offense but it was a little corny, but I still liked it <3), I still listen to Lets Talk Bitcoin, but probably not as much as I used to, and I think a lot of the die hard bitcoiners feel similar. I mean, in a given morning it could be: 2-3 altcoin pools/sites/subreddits, cryptsy, coindesk,reddit, bitcointalk forum, ischinaawake.com, btc-e for trollbox hilarity, and many others. Now? Probably this subreddit, and the mining section of bitcointalk. I rarely check the price anymore, maybe once a day, but I'm never hoping for moon, I just want stability while we all work to get out our products and projects and things that we feel could make a difference, not only in the bitcoin world, but the rest of it too. There was an IRC channel where people would talk about cryptostalks and all the next ones and this that and the other, now I wonder if anyone even actually uses that site for anything anymore. Maybe people were scared off by regulation and Fincen? Who knows....
Anyway, in many respects it feels like a lot of the bitcoin ecosystem is dying, and maybe we should all panic, cry, and shit our pants, but a few things haven't been going badly, and in fact, I'm looking optimistic that the next time a surge of new users enters the market for whatever reason, there will be a much more developed and kind ecosystem to take part of. No one is going to be touting the next 5 second confirmation coin, no more of the ubiquitous "investment" opportunities that await the uninitiated. Other than my love for bitcoin in general, this is what makes me not panic sell, and what keeps me optimistic about the bitcoin future:
The Local community has returned to where I live, in a big way: Bitcoin meetups were getting mixed turnouts, so much so that the two organizers just decided to stop having them altogether. I felt slightly guilty of this, because it was a lot of different kinds of folks coming for a lot of different kind of reasons, which is totally fine, but there never was a comfortable intermingling of all involved. Not everyone became friends after, and many of the first timers weren't hellbent on coming to the next one. However, we just had our last bitcoin meetup and there was over FIFTY people there. This was insane. Not only that, a member from the bitcoin foundation, several local startups, and businesses were there giving presentations. I got shithammered drunk and even exchanged a number while I was there. And get this, I was sitting at a table with two girls? And spoiler alert: They weren't the only two girls there. Woah. This is the bitcoin future!
Merchant adoption: is at a rabid dog pace, and Bitpay, Coinbase, and others are doing amazing. Most yC startups could only dream of getting this far. It seems to never end, and although people don't care as much, its still awesome. Like, I felt there was more hype when Jimmy Wales talked about accepting BTC, than when he actually did, granted its a weird not obvious way to donate, BUT, we are almost desensitized to merchant adoption now because its so rampant. Newegg, Dell, 5200 businesses on coinmap (ok, I lied earlier, I still totally check coinmap). But yeah, Merchant acceptance all day long. Oh, and Lyft on Gyft.... mmm life savingly awesome!
Remittances is becoming a reality: All the time we are seeing services targeting Mexico, Argentina, The Philippines and other countries trying to get things done over there just a little cheaper than Western Union. Granted some are a little more built out than others, but 37coins, and other services similar really excite me, and hold a lot of promise for an application bitcoin can really accel at. Everyone remembers Andreas Antonopoulos planting that seed in our heads a while back, and business sees it too. It's happening, but this shit doesn't happen overnight, however, we have our work cut out for us. We still have a "chicken and egg problem" when it comes to user adoption. Thats where we, the bitcoin community, needs to step in.
Some of the Dark parts of the eco-system are alive and well again: OpenBazaar (its coming), SR2, yeah its still a thing... PD3, came out over the weekend, PvPing with faucet money, was a fun time killer just to see how things are going... Nothing I want to focus on too heavily, but we all know Gambling is a great app for bitcoin, and we (the community) pioneered provably fair gambling. The best part is, the people in the space know who is honest and uses it.
Mining isn't yet extinct for the home miner and the hashrate is GROWING: I know I said that it kinda is above, but I am an at home miner with some S3's scattered about. I do fine, and am well on my way to ROI. I watch the hashrate grow everyday, and that tells me that bullish sentiment sure as hell exists on the long term. I mean, if you are willing to invest in specialized hardware to the tune of millions of dollars, you are in it for the long haul. This market is too illiquid to "cash out" of for the bigger players, so we know they are all hodling. A lot of the ASIC manufacturers are hodling as well, including Bitmain. So maybe the price is taking a dive, but the hashrate hasn't seen negative growth in a LONG LONG time Jan '13 it seems.
User Growth IS Happening: 2 million Blockchain wallets anyone? New wallets and services coming out all the time. Kryptokit, Hive, Mycelium trader, etc. etc. Maybe it isn't happening as fast as we would like, but it is happening. But this isn't like pokemon, you can't just see it on the TV and start catching your bitcoin. For the uninitiated, this shit is CONFUSING. We need to help out. And we need to casually give bitcoin, tipping in other sub-reddits as opposed to gold, helping friends get setup. Just YESTERDAY, someone asked me about coinbase and how to buy it, and I set them up with coinbase, told them about 2FA, and gave them the tools they need to fish. The past couple weeks I've actually gotten a couple people into bitcoin, which is the first time in a couple months, so for whatever reason, interest seems to be picking up again, which is cool.
06-07 18:21 - 'Hello World, This is bitcoins future. Hodl' (self.Bitcoin) by /u/BlazeWhale removed from /r/Bitcoin within 55-65min
''' Hello World! This is my message for you from the future. I hope this survives the time transfer and lands in the correct timeline. Just a few checkpoints to make sure this message arrived to the correct timeline.
Chinese invented the compass 9th-11th century.
German Johannes Gutenberg invented the printing press.
Alexander Graham Bell was the first to be awarded a patent for the electric telephone in 1876
First world war 28 July 1914 to 11 November 1918
Second world war 1939 to 1945
Us 35th president John F. Kennedy was in November 1963
May 22 Bitcoin Pizza Day
The Times 03/Jan/2009 Chancellor on brink of second bailout for banks
It is the year 2035. First question what I would have wanted ask in 2017, if I ever got the opportunity to communicate into the future would be: what is the price of bitcoin? Well I would of course want to know the price measured in US dollars or Euros or some other fiat currency. What if I told you the fiat currency value hasn’t been relevant for the last 10 years. A draft beer costs about 2.0-2.5 satoshis (we call them stoshis), A meal in a restaurant around 6-8 stoshis, A good quality Pizza 5 stoshis. Cadrone transport 0.01 - 0.05 stoshi / km. I hope this helps you get the idea of the purchasing power we are talking about. I can briefly tell you about how the massive increase of bitcoins purchasing power rose so fast even the most optimistic bitcoin believers were surprised. There are many factors and events that all had an effect on the rising demand for bitcoins. 2016 after the most tech savvy liberal minded people had bought into bitcoin things started to happen. 2017 was the year when earlies (early adopters) started investing into bitcoin. (I know it’s funny we all thought in 2016-2017 that early adopters had been ones having bitcoin in the first 5 years after it was created). sidenote: Companies who have started working with bitcoin will see their stock value rise which will push more and more businesses to adopt bitcoin. The demand was huge in Japan, but no one really knew the real reason for Japan recognizing bitcoin as a legal method of payment (so absurd, bitcoin doesn’t a permission). I remember people speculating it was because Japan’s economy was terrible and the % of old population wasn’t decreasing. And yes people speculated correctly. After the famous, Tokyo based, bitcoin exchange called Mt.Gox collapsed in 2014 Japanese authorities had to look into what bitcoin was. It took sometime and eventually someone with enough political influence realized the potential. Japan had to play this whole thing smart, if they started buying bitcoin publicly the global FOMO (fear of missing out) would push the price quickly out of their reach and their Japanese Yen would turn into goat shit. So instead they started out by doing small things like legitimizing bitcoin as a payment method, Government services started accepting bitcoin, small amounts of taxes payable with bitcoins and all at the same time trying to buy as much bitcoins as possible without moving the price too much. Of course everyone knows secrets always spill out, especially government secrets. Soon South Korea was “legitimizing bitcoin” and it didn’t stop there. It started to spread. Some governments tried to stop it (Usa, Russia, Some European countries, India) but banning and/or over regulating it turned out to be useless. So what does a desperate government and banking system do when they have the ability to print unlimited amounts of fiat currencies and are losing their power to people. They print money and try to buy all the bitcoins up. Well I can tell you it didn’t work or well it worked in a nice way which made the unfair system of fiat currencies irrelevant. Some countries figured the potential of bitcoin at the same time as Japan and started doing exactly the same as Japan. Making their citizens aware of bitcoin and buying up bitcoin without signaling a panic buy for the others. Switzerland for example started selling bitcoins to their citizens by Swiss Federal Railways ticket machines. How smart is that? China on the other hand banned and unbanned bitcoin a lot in 2014-2015 timeframe. Then the PBOC “cracked” down on the Chinese exchanges, this was all because china wanted to make bitcoin look more attractive for the investors. China had already been buying bitcoins from 2014, small amounts without raising the price too much. This was a long term investment for china which paid off during the collapse of the US dollar and yuan. The second question that probably would interest me in the past (one of the reasons I postponed investing into bitcoin until the beginning of the year 2018) would be the “The Big Scaling Debate” which really looked at the time as fierce debating but it was really just a power struggle to control bitcoin. Segregated Witness was activated and looking from where I am currently standing it was the best technical solution which everyone actually agreed on but some people where blocking it by making up nonsense and stalling the progress. Funny thing is that once actually big chip manufacturers got interested in ASIC manufacturing and bitcoin mining lots of the bad acting bitcoin mining hardware companies found themselves out of business. We all know who we are talking about. For the technically literate I can’t offer much information from the present because it has gone over my understanding. Everything is connected to the bitcoin blockchain. Protocol upgrades made it possible to build layers on top of layers all secured by the hashing power of the bitcoin blockchain. My car’s private key is stored on a layer of the blockchain, my voting password is also there, I have a private key for my identity and the private keys for my kids identities as well as their medical record private keys. How has the planet changed? We finally reached a stage a few years ago where we got the future of planet earth on a level where it will be sustainable to live in as long as the sun doesn’t burn us down. Bitcoin played a big part in this. Deflationary currency has strange effects, nobody on earth produces crap anymore, meaning no cheap electronics that last only a few years, no plastic bags in stores, no cheap clothes that will last only a few times in a washing machine. Everything and I mean it when I say everything is made with high quality materials and products are made to last long. The demand for high quality long lasting items came from the people. Why would you use a few millibits which grew in purchase power every year to buy some crappy headphones that would last 1 year if you were lucky. If they were going to use their precious millibits they wanted something high quality which would last. Also 95% of the worlds energy is from renewable energy sources, when big bitcoin mining operations started struggling with their profit margins they looked at small bitcoin mining operations who had minimized the cost of electricity by using solar panels and hydropower. Funny how bitcoin mining operations trying to be more profitable boosted the use of renewable energy sources, ok I must add that the death of the petrodollar helped also. Electricity isn’t produced anymore for the need of humans it is produced to power the bitcoin mining facilities and we just use the leftover energy which is more than enough. You are currently in the phase of one of the first altcoin bubbles. These bubbles are part of the bitcoin learning curve for people. People tend to forget what bitcoin is about and then seek high % profits from altcoins. This will happen a few times more in history and most of the altcoins will slowly die away and be replaced by new “innovative” ideas. In the upcoming years the value that poured into altcoins will move into bitcoin. Some of the most biggest alts with minor use cases will survive for longer but their ideas will be built and secured properly on different layers of the bitcoin protocol. What do I regret the most? My biggest regret was not buying bitcoins when I first heard of them, also I regret buying a sailboat with 50% of my small bitcoin stash in 2019. Also I regret not getting into mining when it was still profitable for an average person in 2019. But I am happy I hodled the rest. (yes the hodl meme has survived all these years) One cool thing we discovered besides sending information “back in time” is sending payments to the future. I will be generating the private key for the following bitcoin address on November 20th 2035. I will also login to reddit with the account Blazewhale to celebrate with those of you who are still here. Happy Hodling, price discovery is a bitch. -BlazeWhale 1CXfRfJhMyr41z3LDiV6USuskUZxCBa1We ''' Hello World, This is bitcoins future. Hodl Go1dfish undelete link unreddit undelete link Author: BlazeWhale
Bitcoin (BTC ou XBT) é o primeiro e mais importante dinheiro eletrônico sem autoridade central, baseado numa tecnologia open-source inédita chamada Blockchain, que foi desenvolvida por Satoshi Nakamoto em janeiro de 2009. Essa tecnologia permite a criação de um "banco de dados" confiável P2P (ponto-a-ponto), o que abre caminho para muitos tipos de inovação, sendo uma delas o próprio bitcoin e outras como contratos descentralizados, por exemplo. Nota: normalmente emprega-se "Bitcoin" em maiúsculo para se referir ao protocolo (baseado na tecnologia Blockchain) e em minúsculo "bitcoin" para se referir a uma unidade da moeda. O Bitcoin, além de um bem digital, pode ser considerado também um sistema de pagamento, totalmente independente de qualquer sistema já existente, como cartões de crédito, Paypal, bancos e outros. Sua capacidade atual estimada é de 7 transações por segundo, mas essa capacidade pode ser aumentada com o passar do tempo se houver necessidade. Por ser puramente digital e distribuído, o Bitcoin funciona 24/7 e tem alcance mundial, além de ter locais especializados de troca pela moeda local (chamados exchange) nas principais cidades do mundo. A segurança da rede do Bitcoin, ou seja, o que garante que não existirá um chamado "gasto duplo" do mesmo dinheiro, é o consenso da rede P2P feito pela validação das transações por parte dos mineradores. Para que um minerador consiga incluir um bloco válido na rede, ele precisa utilizar um grande poder computacional. O processo de mineração consiste na realização de cálculos matemáticos para a seleção de quais transações válidas serão incluídas no próximo novo bloco do Blockchain, excluindo aquelas que tiveram uma tentativa de "gasto duplo" naquele período. Cada nó da rede, além dos mineradores, também é capaz de verificar a validade das transações incluídas no bloco. É nesse processo também que aparecem os "bitcoins ainda não descobertos". A distribuição dos bitcoins é feita de forma previsível, tendo uma queda de recompensa pela metade de 4 em 4 anos. Serão encontrados no máximo 21 milhões de unidades da moeda.
Quanto vale um bitcoin?
O preço de mercado de um bitcoin é determinado através da lei da oferta e da procura, portanto estando sujeito a variações de preço por causa de acontecimentos políticos e econômicos (como desvalorização e inflação de moedas estatais, conflitos, maior demanda por Bitcoin etc). Assim como nas moedas estatais, o preço do bitcoin varia e pode ser diferente dependendo do lugar em que for negociado. Se você for comprar dólares no Brasil, você terá que procurar uma casa de câmbio que poderá ter a cotação de R$ 3,00 por dólar, por exemplo. Caso vá a outra casa de câmbio, você poderá notar que o preço poderá ser ligeiramente diferente, além das taxas também variarem. Com o Bitcoin não é diferente. Essa variação entre as exchanges (nome comumente usado para se refererir aos locais de compra e venda de bitcoin) são equilibradas pelo mercado através de operações de arbitragem (comprar num lugar mais barato e vender num mais caro). Para se ter uma ideia do preço médio do bitcoin, você pode dar uma olhada em sites como os que seguem:
Por ser uma moeda ainda muito recente (inventada em jan/2009) e ainda não muito utilizada, seu preço de mercado ainda é muito volátil. Isso faz do bitcoin um investimento de risco atualmente. O preço tende a ficar mais estável ao longo do tempo, quando o mercado puder definir com mais exatidão seu "preço real". As oscilações também tendem a diminuir conforme o seu market cap (quantidade de moedas x preço) aumentar. Hoje (2015) o market cap do bitcoin é de US$ 3 bi, o que pode ser considerado pouco se comparado ao valor de algumas empresas como a Dell (US$ 24 bi) ou ainda de outras commodities como o ouro (US$ 2.600 bi). Para um gráfico da volatidade ao longo do tempo, acesse:
O bitcoin é um bem digital e assim como outros bens, pode ser adquirido de diversas formas:
Oferta de bens ou serviços em troca de bitcoins;
Trocando bitcoins por alguma moeda estatal como o real ou dólar em algum lugar especializado ou mesmo diretamente com alguma pessoa física (P2P).
Minerando bitcoins (processo que atualmente é lucrativo apenas a profissionais, e que será explicado posteriormente).
1. Negociação direta (P2P / pessoa a pessoa)
Uma das maneiras mais baratas de se negociar bitcoins, porque não tem taxas, é comprando diretamente de outras pessoas que já possuem a moeda. As duas partes chegam a um acordo de preço e a troca é feita. Geralmente quem tem menos reputação entrega o bitcoin ou a moeda local primeiro. Por ser uma maneira relativamente arriscada, pois não há um mediador para casos de descumprimento de uma das partes, a reputação de alguém deve ser muito considerada. Exemplo: prefira negociar com alguém do seu círculo de amizades (rede de confiança), alguém que você confie muito como familiares e amigos, ou por uma indicação (amigo de amigo). Se a outra parte tem uma reputação duvidosa, prefira negociar aos poucos (divida os valores em várias partes menores e vá trocando aos poucos). Algumas ferramentas auxiliam nesse processo de reputação e rede de confiança, sendo elas:
A mais tradicional, confiável e mais importante: Bitcoin OTC WoT que mantém um "grafo de confiança" e pode ser acessada através de comandos para um bot de um canal IRC. Se quiser aprender mais, entre na comunidade Bitcoin OTC WoT Brasil para pedir auxílio em português.
LocalBitcoins lista alguns interessados em negociar na sua região.
2. Negociação indireta (com intermediário)
Outra forma de se negociar bitcoins (e essa provavelmente é a maneira mais conveniente, embora não seja a mais barata) é utilizando um intermediário que viabilize a compra e venda de bitcoins entre pessoas interessadas. Esses intermediários são as "corretoras" ou "bolsas" de bitcoins (mais conhecidas por exchanges). Essas corretoras fornecem um serviço de intermediação entre compradores e vendedores de bitcoin, cobrando uma taxa para tal. Por causa disso o bitcoin nas corretoras tem um preço final um pouco mais alto do que se fosse comprar de outras maneiras, mas devido ao altíssimo volume, uma operação pode ser realizada instantaneamente. Além de usar exchanges, você também pode encontrar um intermediário na relação P2P, tornando-a mais segura. Exemplo: um amigo em comum, que pode levar uma comissão previamente combinada para intermediar as duas partes. Você pode conferir uma lista de corretoras no ExchangeWar. Algumas das principais corretoras brasileiras são:
Hoje é virtualmente possível gastar os bitcoins em qualquer lugar, usando algum intermediário para trocá-los imediatamente sob demanda por alguma moeda local, como numa exchange ou com serviços como Neteller, Xapo ou Gyft. Alguns locais porém já aceitam a moeda digital diretamente, como é o caso da Microsoft, Dell e Overstock, além de inúmeras outras ao redor do mundo. Confira uma lista com mais de 100 mil lugares que já aceitam diretamente o bitcoin em SpendBitcoins ou no CoinMap. Segue algumas listas de locais que aceitam bitcoin no Brasil:
Para minerar bitcoins você precisa executar um software em um computador especializado (ASIC) que possa realizar uma grande quantidade de operações matemáticas demandada pelo sistema de consenso P2P do bitcoin. Logo após a criação do Bitcoin em 2009, era possível e rentável minerar bitcoins utilizando o processamento de computadores pessoais (através de simples processadores e placas de vídeo), mas com o tempo essa atividade deixou de ser rentável e tornou-se praticamente impossível para tais máquinas. Isso aconteceu pois o interesse no Bitcoin aumentou muito, trazendo assim mais pessoas para a mineração e impulsionando uma corrida por maior quantidade de processamento. Com o avanço da tecnologia e o aumento do interesse por Bitcoin, mais poder de processamento foi adicionado à rede Bitcoin e isso resultou em um aumento da dificuldade para se encontrar novos Blocos. Essa é uma característica do protocolo Bitcoin: quanto maior o poder de processamento da rede, maior a dificuldade para se minerar bitcoins - ou seja, maior a dificuldade para se descobrir novos Blocos. Um bloco é um arquivo que possui uma identificação (data, hora e informações genéricas) e um registro das transações (movimentação de bitcoins entre endereços) mais recentes. Resumidamente, os mineradores são uma forma de manter a rede Bitcoin segura e operante, algo que demanda muito poder de processamento (o que torna inviável o uso computadores de propósito geral para tal fim) e que, como retribuição por essa tarefa importante, gera uma recompensa em bitcoins pelo trabalho. Todas as transações, ou seja, as movimentações em bitcoins realizadas entre endereços (carteiras), são anônimas pois se caracterizam como uma transferência de fundos de um endereço Bitcoin para outro, que, embora tenham relação indireta com pessoas reais, não possuem uma relação direta. Ou seja, não é possível dizer com absoluta certeza que determinada pessoa é detentora de um endereço a menos que ela diga isso em algum lugar - o que torna o Bitcoin algo pseudônimo, não anônimo (você é anônimo apenas se quiser e tiver conhecimentos para tal). Todas as transações da história da rede Bitcoin são públicas e podem ser conferidas em sites como o Blockchain Info. Então...é impossível minerar hoje em dia num PC comum ou notebook? Sim, mas não é lucrativo. Para isso existem os ASICs (Circuitos Integrados de Aplicação Específica, em inglês Application Specific Integrated Circuits), hardwares específicos para mineração. Há uma lista na Bitcoin Wiki, em inglês, onde estão listados todos os ASICs disponíveis no mercado e também placas gráficas e processadores. É importante notar que embora seja possível minerar bitcoins, não é algo recomendado aos brasileiros, uma vez que o equipamento é caro, importado e possui taxas de importação - além da energia elétrica brasileira, que inviabiliza totalmente o processo. Nota: Em processo de desenvolvimento:Guardando seus bitcoins e Ganhando bitcoins.
Unidades comuns do bitcoin
Quantidade em bitcoin
Unidade básica, usada no client padrão.
Padrão em diversos serviços.
Possível novo padrão a ser adotado.
Frequentemente usado para negociar altcoins, menor unidade possível.
02-18 16:17 - 'Just think about this and do the math' (self.Bitcoin) by /u/YoSoElIn removed from /r/Bitcoin within 1-6min
''' More than 16 million bitcoins are already mined, only less than 5 million to go in an ever decreasing supply till 2140. Many of the existent bitcoins are already lost forever. Only 1800 bitcoins are mined daily, and that supply is going to be cut in half (to 900 bitcoins daily) in 3 more years (2020). So, if bitcoin becomes (and it will) even a little bit mainstream, that means that maybe hundreds of millions of people will be fighting to get one of those 1800 coins every day, but they will be so expensive that 99% of people will afford to buy from satoshis to a few millibits, at best. If you can afford to buy one whole bitcoin now, you will be in the richest 0.1% (maybe 0.01%?) in the future. ''' Just think about this and do the math Go1dfish undelete link unreddit undelete link Author: YoSoElIn
There are currently about 7,192,108,000 people in the world. A total of 21 million bitcoins can/will be made. 21,000,000 / 7,192,108,000 = 0.00291986716 BTC That's about 2.9 millibits (₥) per person IF everyone adopts Bitcoin and ONCE every Bitcoin has been mined. Maybe one day we'll get to the point where we need to start referring to BTC in Satoshis. (That would be 2,900,000 Satoshis). Discuss :)
General information  What is Bitcoin? [The main article: Bitcoin Bitcoin is a peer-to-peer digital currency that can be safely and instantly sent to any person in the world. This currency is like electronic money, which you can share with friends or use to pay for your purchases.. What are bitcoins? [Bitcoin is a currency unit of Bitcoin system. . Abbreviation “BTC” is usually used; it However, Bitcoin can be divided into smaller units and denominations that would make it easier for Bitcoin users to spend and use it. Bitcoin = 1 BTC; DeciBit = 0.1 BTC; CentiBit = 0.01 BTC; MilliBit = 0.001 BTC; MicroBit = 0.000001 BTC; Finney = 0.0000001 BTC; Satoshi = 0.00000001 BTC; We can see that the smallest Bitcoin unit is known as Satoshi. MilliBit – 0.001 BTC MicroBit – 0.000001 BTC “Finney” – 0.0000001 BTC “Satoshi” – 0.00000001 BTC. A “Satoshi” is 1 Hundred Millionth of a Bitcoin. The smallest bitcoin unit is called a Satoshi (or a “Sat,” for short). It’s named after Bitcoin’s mysterious founder, Satoshi Nakamoto. Bitcoin’s divisibility is one of its many features. People that have never used cryptocurrencies before might think that they are required to purchase a whole Bitcoin to transact with the new form of currency; however, one Bitcoin is divisible into 100 million units and its smallest unit is called a Satoshi. Other units include: bit and Finney Bitcoin Price fell 30% in a week, reaching a multi-month low of $750. 2-3 March 2017: $1,290+ Bitcoin Price broke above the November 2013 high of $1,242 and then traded above $1,290. April 2017: $1,210 — $1,250 May 2017: $2,000 Bitcoin Price reached a new high, reaching US$1,402.03 on 1 May 2017, and over US$1,800 on 11 May 2017.
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