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O que e bitcoins

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Although all transactions are recorded, nobody would know which 'account number' was yours unless you told them. In an online chat with social media users in January , the world's richest man, Elon Musk, said he was a big supporter of Bitcoin. He even went as far as to change his Twitter bio to " bitcoin". He has repeatedly shown his support to online currencies in recent years and caused major movements in their values due to his own personal wealth and influence.

This particular endorsement led to the value of Bitcoin to rise significantly. Every transaction is recorded publicly so it's very difficult to copy Bitcoins, make fake ones or spend ones you don't own. It is possible to lose your Bitcoin wallet or delete your Bitcoins and lose them forever.

There have also been thefts from websites that let you store your Bitcoins remotely. The value of Bitcoins has gone up and down over the years since it was created in and some people don't think it's safe to turn your 'real' money into Bitcoins. He said that he was "very nervous" about people using Bitcoin for payments pointing out that investors should realise its price is extremely volatile. By this, he meant that the value could drop significantly at any moment and investors could lose a lot of money.

Elon Musk becomes richest person in the world. These comments are now closed. Trump impeachment trial will go ahead after vote. Home Menu. Guide: What is Bitcoin and how does it work? Getty Images. What is Bitcoin?

How does Bitcoin work? A Bitcoin wallet app on a smartphone. How do people get Bitcoins? Denes Farkas. How are new Bitcoins created? People build special computers to generate Bitcoins. Why are Bitcoins valuable? Bitcoins are valuable simply because people believe they are. Why do people want Bitcoins? Is it secure?

More like this. Elon Musk becomes richest person in the world 10 Jan 10 January Your Comments Join the conversation. To use comments you will need to have JavaScript enabled. Top Stories. Why couldn't Alice just sent Bob an electronic check? Why not use one of these other approaches that are more well understood, that are more mainstream, that are more established? Why on earth would you possibly want to mess with a good thing? So it turns out that there are a few properties of bitcoins that are worth noting.

For starters, there's privacy. It turns out that within the bitcoin ecosystem, within the bitcoin network, people can transact without divulging who they are in the real world. From the perspective of bitcoin, Alice's identity is just going to be a sequence of numbers.

And that sequence of numbers is effectively going to function like a pseudonym for Alice. And that sequence of numbers has nothing to do with your real-world identity. Nobody needs to know this is Alice transacting. All they need to worry about is their pseudonym within the system. And this is kind of but not quite like what you would get if you bought something using cash.

In that capacity, when you buy something using cash, then you don't have to provide any details or proof regarding who you are in the real world. And that's different from, let's say, using a credit card, where you have to provide your name and your billing address and so on.

Or let's say providing an electronic check, where you need to tie that electronic check, typically your bank account details. Now, I do want to also mention here that sometimes when you have a cash list or a transaction that uses cash, there is now the possibility that people might try to use these transactions for malicious purposes to buy illicit goods and services.

That definitely is a risk that occurs when you provide anonymity and privacy. But there are certainly legitimate reasons why somebody might want to conduct a transaction privately and not have the whole world know what they're transacting. Another property of bitcoin is that it's open. Literally anyone can get involved. Literally anyone who was an internet connection can make a bitcoin transaction. And all you need to do to get started is, as I alluded to earlier, is download this special bitcoin client.

And the bitcoin client, or for that matter you can use a service like Mt. Gox which will effectively do the same work as a client for you. But the short of it is that anyone who has a bitcoin client or who has an account with an exchange like Mt. Gox can engage in bitcoin transactions.

That transaction, the details of it, the mechanics of it will be transparent to the user. All the user has to worry about-- all Alice needs to worry about-- is how much money she has and whether she can give that money to Bob. The actual software underneath will take care of all the underlying mechanics of making that transaction work. Now, this is different. When you think about a traditional currency like a dollar, if I want to transact something online, typically I need a bank account, I need a credit card, and so on and so forth.

Then we often take it for granted that there are people out there who may not have access to a credit card, who may not have a bank account. It's pretty high. There are a lot of people out there who wouldn't be able to conduct a traditional internet transaction, but who can conduct a transaction using bitcoin.

And by the way, there are people using bitcoin all over the world. And literally it doesn't matter where you are in the world, as long as you have an internet connection, you can start transacting bitcoins. Now, another property of bitcoin that's worth mentioning is that it's decentralized. There's no bank or centralized entity that can really control what's happening in the bitcoin ecosystem. It's all done in this kind of ad hoc fashion.

And what that means is that when you do a transact-- or when Alice transacts with Bob over the internet, that transaction doesn't have to go through a third party. There's no bank that gets in the way of that transaction. And that can have certain benefits as well.

For example, that means that no one entity can directly control the money supply of bitcoins. That also means that no one entity can see your assets. Or for that matter, no one entity can reverse a transaction, which is definitely desirable for certain merchants. Some merchants might not be able to conduct business online because of fraud concerns. And if you have a system where the transactions cannot be charged back easily, then from the merchant's perspective, they may be able to inhibit fraud and thereby that might enable their business entirely online.

Now I want to point out that this last property of decentralization definitely causes concern among some people or not in bitcoin after all. When you think about it, a central authority like a bank does perform an important function in the context of a traditional currency. For example, banks might validate currencies. They might validate transactions against fraud. Now, in bitcoin, this validation is basically done in a decentralized way by the other parties, the other nodes, in the bitcoin network.

Now, the goal of the remaining videos in this series is to walk through the underlying mechanics of bitcoin transactions and really how they're validated, even though the system is decentralized. And there are some pretty amazing techniques that are used to make all this work. So I suspect that at this point, you may have a ton of questions about bitcoin, and that's entirely to be expected.

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Como Ele Funciona? Como funciona o Bitcoin? Origem do Bitcoin; Quanto vale o Bitcoin? Como comprar Bitcoin? Como Funciona o Bitcoin? Quanto Vale o Bitcoin? Como Comprar Bitcoin? Finalizando… Hoje vimos um pouco mais sobre como funciona o Bitcoin.

Total votes: 0 Upvotes: 0 Upvotes percentage: 0. Blog Facebook. Deixe uma resposta Cancelar resposta. Comments comments. Search for: Search. Hey there! De a , a criptomoeda foi usada principalmente em mercados negros como o Silk Road. Em a blockchain dividiu-se em duas cadeias independentes.

Em , a Alemanha legalizou as criptomoedas - dentre elas o Bitcoin - como um meio de pagamento isento de impostos. Ou seja, todas as unidades de um mesmo bem tem o mesmo valor no mercado. No entanto, algumas pessoas preocupam-se com a origem das moedas que elas recebem. Em , 3 dos maiores vendedores de varejo norte-americanos aceitavam bitcoins, uma queda comparado aos 5 que aceitavam em Bitcoins podem ser comprados e vendidos tanto online como offline.

O bitcoin, como uma unidade de conta, possui atributos semelhantes a uma moeda. O site Mt. Desenvolvedores do bitcoin. Existem dois tipos de forks: softfork e hardfork. Hardforks ocorre quando existem metas divergentes dentro da comunidade do projeto inicial, onde dividem-se apoiando diferentes metas.

Em junho de , o malware Infostealer. Coinbit [ ] foi considerado o primeiro destinado a furtar Bitcoins de carteiras individuais; em outubro do mesmo ano um cibercriminoso ofereceu a venda do ZeuS botnet Trojan, aceitando pagamento em Bitcoins, Liberty Reserve ou WebMoney.

Ver artigo principal: Satoshi Nakamoto. Cryptology ePrint Archive. Consultado em 18 de outubro de Consultado em 28 de janeiro de Consultado em 2 de novembro de CNN Money. Unicode Consortium. Consultado em 20 de junho de Antonopoulos abril de Mastering Bitcoin.

Unlocking Digital Crypto-Currencies. Financial Crimes Enforcement Network. Consultado em 1 de junho de AOL inc. Consultado em 8 de outubro de Consultado em 20 de abril de InfoMoney Mercados. Portal do Bitcoin. Acesso em: 13 maio Moeda na era digital. Consultado em 28 de abril de Journal of Economic Perspectives. Consultado em 3 de julho de Consultado em 10 de julho de Market Watch. Business Insider. Consultado em 15 de junho de The New Yorker.

Consultado em 31 de outubro de Consultado em 13 de outubro de Bitcoin: And the Future of Money. Consultado em 20 de janeiro de Fast Company. The Atlantic. Universidade de Aston. Tecnologia e Games. Consultado em 24 de outubro de Consultado em 30 de julho de Consultado em 15 de fevereiro de Bitcoin miners must also register if they trade in their earnings for dollars.

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🔴 O Guia Básico da Bitcoin: o que é, como funciona, e suas vantagens!

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Bitcoin is a cryptocurrency invented in by an unknown person or group of people using the name Satoshi Nakamoto. The currency began use in when its implementation was released as open-source software. Bitcoin (₿) is a cryptocurrency invented in by an unknown person or group of people using the name Satoshi Nakamoto. The currency began use in Bitcoin is a cryptocurrency created in Marketplaces called “bitcoin exchanges” allow people to buy or sell bitcoins using different currencies.