Bitcoin - Tópico principal

[Jérôme]

Ah, ok. Obrigado.

Com estes flaws todos que se estão a ver no bitcoin, nem tudo se perde.
E a bitcoin lá subiu com esta notícia, que na prática não tem nada a haver com a própria.

[Kin2010]

Não há barreiras de entrada para criar moedas similares.

Eu ainda estou à espera que alguém refute a minha hipótese de criar uma nova moeda à base de cores. Cada cor tinha um dono registado numa base de dados central. Se se definissem as cores como sendo apenas 16, por exemplo, era esperar que a cotação de cada uma subisse a 1 bilião de USD ou coisa parecida. Depois podia-se postular que se transaccionassem fracções de 1 milionésimo ou coisa parecida.

[hermes]

Não há barreiras de entrada para criar moedas similares.

Eu ainda estou à espera que alguém refute a minha hipótese de criar uma nova moeda à base de cores. Cada cor tinha um dono registado numa base de dados central. Se se definissem as cores como sendo apenas 16, por exemplo, era esperar que a cotação de cada uma subisse a 1 bilião de USD ou coisa parecida. Depois podia-se postular que se transaccionassem fracções de 1 milionésimo ou coisa parecida.

Não estou a perceber o que há para refutar.

É assim: eu sou o dono da base de dados e cobro pela transferência de bits coloridos entre entradas da base de dados. Além disso, como há por aí à venda uns palácios, umas ilhas do Mar Egeu, uns bons vinhos, iguarias e ouro e como mereço la dolce vita, pintaria outro milhão de bits para comprar alguns dos ítens atrás. Como sou dono da base de dados, tens de acreditar em mim e tens de acreditar que não tenho uma base de dados paralela com mais bits coloridos que não mostro aos auditores. Negócio fechado?

[Kin2010]

E em que é que essas objecções se aplicam só ao sistema de cores, e não à bitcoin? Ou, já agora, às moedas oficiais? Claro que a moeda só terá valor no mercado se as pessoas acreditarem que tem valor. É sempre assim. A hipótese que eu coloquei era partindo do pressuposto de que os promotores da "moeda de cores" iam conseguir criar um grande movimento com milhões de pessoas a acreditar e a não quererem ficar de fora.

[camisa]

WTF does this mean?

http://www.coinion.com/2013/12/11/child-labor-bitcoin-mines-exposed/

putos a minar bitcoins com abacos??? isso é possível?

[Local]

All donations go to the yet non-existent Bitcoin Mining Child Foundation

hum...

[Jérôme]

WTF does this mean?

http://www.coinion.com/2013/12/11/child-labor-bitcoin-mines-exposed/

putos a minar bitcoins com abacos??? isso é possível?

lol é gozo, o artigo é puro gozo do início ao fim...

“The blockchain was built off the sweat of child labor. I can get a solid 1, or even 2 hash per minute from each kid. Give them an abacus and it skyrockets to 3 or 4 hash/minute.  Do you have any idea how many idle children there are in India? That’s a lot of Satoshi.”

Undercover photograph taken of the “BTC Guild“, the largest mining pool.

In one mine, children dart their abaci back and forth, dejectedly computing hash after hash.  They have lost all sense of language, speaking only in base58.

Miner measuring the hash per minute rate of his new rig.

grandes loladas
Este artigo está uma delícia

[camisa]

lol também me passou pela cabeça ser gozo, mas como não faço a mínima ideia de como são minadas as bitcoins...

[jeab]

JPMorgan quiere competir con bitcóin

http://www.cnnexpansion.com/economia/2013/12/11/jpmorgan-patenta-facsimil-de-bitcoin

[hermes]

JPMorgan quiere competir con bitcóin

http://www.cnnexpansion.com/economia/2013/12/11/jpmorgan-patenta-facsimil-de-bitcoin

Vai criar a bitcon?

[Thorn Gilts]

lol também me passou pela cabeça ser gozo, mas como não faço a mínima ideia de como são minadas as bitcoins...

http://blog.bitcoin-portugal.com/2011/07/minar-principal-maneira-de-lucar-com-bitcoins/

[Jérôme]

A dois clicks do link do Thorn:

http://www.bitcoinx.com/profit/

[Automek]

A notícia da valorização da bitcoin já é notícia de primeira página no jornal i. Não sei se é bom ou mau sinal...

[Jérôme]

JPMorgan's "Bitcoin-Alternative" Patent Rejected (175 Times)

Earlier in the week, we detailed JPMorgan's attempt to create their own "web cash" alternative to Bitcoin (and Sberbank's talk of doing the same). However, as M-Cam details, following the failure of the first 154 'claims', JPMorgan issued a further 20 claims - which were summarily rejected (making JPMorgan 0-175 for approved claims). As they note, The United States Patent & Trademark Office (USPTO)’s handling of applications like JPMorgan’s ‘984 application ("Bitcoin Alternative") highlights the need to fix a broken system - patent applications of existing inventions need to be finally rejected and not be resurrected as zombies (no matter how powerful the claimant).

After the initial 154 claims were abruptly cancelled, JPMorgan’s attorney submitted 20 additional claims which the examiner, Jagdish Patel, issued non?final rejections for all 20 of the new claims in October 2013. This makes JPMorgan 0?175 in terms of approved claims. The last 20 claims were rejected for non?patentability and indefiniteness under Title 35 United States Code (U.S.C.) Sections 101 and 112.

However, Mr. Patel might well have rejected the claims because of the ‘On Sale Bar’ rule under 35 U.S.C. Section 102(b), meaning that if the invention has been on sale for over a year then the invention is no longer patentable. Under the ‘On Sale Bar’ rule, the application could be invalid because it closely mirrors Bitcoin with features such as making free and anonymous electronic payments and Bitcoin has been in circulation since 2009.

Conclusion

The United States Patent & Trademark Office (USPTO)’s handling of applications like JPMorgan’s ‘984 application highlights the need to fix a broken system.

Patent applications of existing inventions need to be finally rejected and not be resurrected as zombies.
 
Part of the problem of a system in which one third of patents are seriously or fatally impaired is that companies are allowed to patent items that their competitors have already invented.

Obviously, large financial institutions want in on the online alternative currency action. But they would be well advised to pursue novel and non?obvious approaches that do not duplicate existing commercial options with respect to a virtual medium of exchange.

Fonte: Zerohedge

[Jérôme]

Auto dealer accepts Bitcoin payment for purchase of Tesla Model S

[jeab]

Muito interessante ...
https://www.kraken.com/
Kraken.com is Payward's exchange for arbitrary assets with support for Bitcoin, Litecoin, Namecoin, Ripple and Ven. Those familiar with forex will enjoy the service's margin trading and advanced order types.

Payward is servicing customers globally and has local banking relationships in the United States, European Union and South Korea, with more coming soon. Customers in the US can currently enjoy cryptocurrency trading, and in a few states national currency trading as well. We're in the process of rolling through our money transmitter license applications and will be launching national currency trading for more US states in early 2014.

National currencies currently supported: USD, EUR, KRW
Digital currencies currently supported: XBT, XRP, LTC, NMC, VEN

https://www.youtube.com/watch?v=IJAO2zn0f_s

[Jérôme]

-10%

[Jérôme]

Bitcoins Fail Currency Test in Scandinavia’s Richest Nation

Bitcoins were dealt a blow in Norway as the government of Scandinavia’s richest nation said the virtual currency doesn’t qualify as real money.

“Bitcoins don’t fall under the usual definition of money or currency,” Hans Christian Holte, director general of taxation in Norway, said in an interview. “We’ve done some assessments on what’s the right and sound way to handle this in the tax system.”

Norway will instead treat Bitcoins as an asset and charge a capital gains tax, after Germany in August said it will impose a levy on the virtual currency.

More and more nations are taking an official stance on the software since it emerged in 2008 as a virtual currency that’s not controlled by any government or central bank. Bitcoins can be used to pay for everything from hand-made rugs to window cleaning. Students at the University of Nicosia in Cyprus can even pay for their tuition with the software.

Paul Ehling, associate professor in the department of financial economics at the BI Norwegian Business School, said the government’s definition of money may be too narrow.

“Currency is any agreed upon means of exchanges of goods and services, so you could have some small stones, as used in history, and if it’s accepted by a sufficiently large population, then that’s enough,” Ehling said in an interview. “These days we do mean that a much larger group of people is willing to exchange goods or services for this currency.”

China, U.S.

There are about 12 million Bitcoins in circulation, according to Bitcoincharts. Users of the digital money are finding that its wider adoption depends on policy makers and banks as governments from China to the U.S. try to create a set of rules to protect users.

Bitcoin exchanges, payment processors and other startups say they need banks to connect them to the existing payments system and provide basic services like checking accounts. To do that, the fledgling companies must convince the regulators that police the banks that Bitcoins aren’t being used to conceal illicit activity.

Bitcoins’ volatility has also attracted attention and raised questions about its viability as money.

“I don’t think you can even call something a currency if it can change in value by 20 percent to 30 percent a day,” Sophocles Sophocleous, a director at Argos Capital Management in Cyprus, said in a telephone interview today. “At the end of the day, I think people want something backing a currency.”

EBA Warning

The digital currency plunged last week after China’s central bank barred financial institutions from dealing in it. That followed a sudden surge in value in November after a U.S Justice Department official described Bitcoins as a “legal means of exchange.”

The European Banking Authority today released a warning on the risks of using unregulated digital money that is susceptible to hackers. “Cases have been reported of consumers losing significant amounts of virtual currency with little prospect of having it returned,” the EBA said in a statement on its website. “When using virtual currency for commercial transactions, consumers are not protected by any refund rights under EU law.”

The price of Bitcoins topped $1,000, as speculators anticipated broader use of digital money. The price has since dropped to around $850 on Bitstamp, one of the more active online exchanges where Bitcoins are traded for dollars and other currencies. They were trading at about $12 a year ago.

Sudden Wealth

Norwegians marveled at the potential of the virtual currency when it emerged in October that a university student became a krone-millionaire after buying the coins. Kristoffer Koch bought $24 worth of Bitcoins in 2009 and then forgot about them until this year, according to Norwegian broadcaster NRK. When he checked his investment’s value, it had soared to more than $800,000, helping him buy an apartment, NRK said Oct. 25.

In Norway, profits from Bitcoin will fall under the wealth tax and losses can be deducted, Holte said. There will be a 25 percent sales tax that applies to businesses, he said.

Introduced five years ago by a programmer, or group of programmers, going under the name of Satoshi Nakamoto, Bitcoins can potentially reduce banking-transaction fees, making it an attractive option for trading via the Web or in stores.

Trusting Currencies

While tax revenue from Bitcoins isn’t substantial, Holte at the Norwegian tax authority said he plans to work with other countries to hammer out the legal aspects of Bitcoin.

Bitcoins’ survival will ultimately depend on whether consumers and vendors decide they can trust it as a legitimate payment form, Ehling said.

“If there’s a crisis or power outage, you need some bills in your wallet in case your credit card doesn’t work -- same goes with Bitcoins,” he said. “It’s sustainable if people use it more and more, and if they trust it. People start with buying small things, but if they start to make bigger and bigger transactions, it could begin to challenge other currencies. Right now, we’re not there.”

Fonte: Bloomberg

[Jérôme]

-18%

[Luisa Fernandes]

A nova bolha especulativa...