Re: Bitcoin

by Trinity 27/6/2014, 22:51

Amerikanci u slovensku burzu bitcoina uložili 10 milijuna dolara
Slovenska burza virtualnog novca Bitstamp dobila je od američkih ulagača financijsku injekciju od 10 milijuna dolara, objavio je poslovni portal Bloomberg.

Suosnivač Bitstampa Damijan Merlak za Slovensku tiskovnu agenciju (STA) rekao je da ne može komentirati detalje ulaganja.

Ulaganje američke investicijske grupe Fortress u Bitstamp je dio šire strategije ulaganja u industriju virtualnog novca, prvenstveno bitcoina. Transakcija je provedena krajem prošle godine, a Bloomberg navodi da je riječ o do sada najvećem ulaganju u poduzeće koja se bavi virtualnim valutama.

Fortress International Group je jedan od prvih institucionalnih ulagača u bitcoin – krajem prošle godine u ovu virtualnu valutu uložili su 20 milijuna dolara, a u godišnjem poslovnom izvješću se navodi da je grupa u tom ulaganju izgubila osam milijuna dolara.

Slovenska burza virtualnog novca Bitstamp, čije je službeno sjedište u Londonu, nakon propasti japanske burze Mt Goxkrajem veljače, preuzela je ulogu vodeće svjetske burze bitcoina. Slovenski mediji navode da je u posljednja 24 sata promet dosegnuo 15.000 bitcoina, što odgovara protuvrijednosti od gotovo devet milijuna američkih dolara.

Damijan Merlak i Nejc Kodrič utemeljili su Bitstamp 2011., kada je jedan bitcoin vrijedio jedva pet američkih dolara. Danas jedan bitcoin vrijedi oko 600 dolara, a procjenjuje se da njihova kompanija mjesečno ostvari oko pola milijuna dolara prihoda.

https://www.bitstamp.net/

banka.hr

by Guest 27/6/2014, 23:13

koje konkretno podatke drobe ti kompovi za rudarenje...

by Trinity 28/6/2014, 10:40

Western Union bi mogao ponuditi slanje bitcoina

U intervjuu za Bloomberg-ov "Street Smart" program čiji je domaćin Triš Regan, CEO Western Uniona Hikmet Ersek je spomenuo nekoliko zanimljivih komentara vezanih za bitcoin.

Bitcoin - Page 3 WESTERN-UNION-CEO-BLOOMBERG-890x395

Konkretno, Ersek je sugerisao da bi njegova kompanija, koja je lider u slanju novca, mogla da razmatra prihvatanja bitcoina ukoliko bi korisnici iskazali želju za tim. Međutim, to bi bilo moguće samo ukoliko bi bitcoin bio potpuno zakonski regulisan."U Western Unionu trenutno omogućavamo slanje novca u 121 valuti širom sveta [...], u nekom trenutku, bitcoin bi trebao biti regulisan, od strane državnih regulacionih tela i priznat kao ravnopravna valuta. A kada se to desi, zašto ne bismo primali i slali i bitcoine?" glasio je njegov odgovor na pitanje voditelja Regana za komentar o digitalnim valutama i kako se one uklapaju u njihov trenutni poslovni model.

"Još uvek nije regulisan i priznat kao valuta" dodao je "i to je trenutni problem bitcoina."

To ne govori da se stvari ne mogu promeniti, ali će biti potrebno izmeniti trenutne zakone.

"Mi smo striktno regulisana sfera, ako je bitcoin regulisan i mušterije žele da šalju bitcoine putem naših usluga, zašto im ne bi omogućili to?" završio je Ersek.

26.06.2014.

http://www.bitcoinbalkan.com/western-union-bi-mogao-ponuditi-slanje-bitcoina

by Trinity 28/6/2014, 12:31

bogomdani wrote:koje konkretno podatke drobe ti kompovi za rudarenje...

nis još počela rudariti da ti točno mogu reći, skupljam informacije...

by Trinity 29/6/2014, 17:07

Danas je www.bitcoinbalkan.com nedostupan cijeli dan, a htjela staviti prilog o reklamiranju bitcoina na SP Brazil.

by Guest 29/6/2014, 22:53

zasto zna nacesce biti nedostupan?

by Trinity 30/6/2014, 20:53

ne znam šta se dešava, znaju biti na onom forumu, možda nešto piše...
i danas su nedostupni....

by Trinity 30/6/2014, 20:54

Bitcoin mining hardware has evolved dramatically since 2009

At first, miners used their central processing unit (CPU) to mine, but soon this wasn't fast enough and it bogged down the system resources of the host computer. Miners quickly moved on to using the graphical processing unit (GPU) in computer graphics cards because they were able to hash data 50 to 100 times faster and consumed much less power per unit of work. During the winter of 2011, a new industry sprang up with custom equipment that pushed the performance standards even higher. The first wave of these specialty bitcoin mining devices were produced by Butterfly Labs. These easy to use miners were based on field-programmable gate array (FPGA) processors and attached to computers using a convenient USB connection. FPGA miners used much less power than CPU's or GPU's and made concentrated mining farms possible for the first time.

Today's modern bitcoin mining hardware

Application-specific integrated circuit (ASIC) miners have taken over completely. These ASIC machines mine at unprecedented speeds while consuming much less power than FPGA or GPU mining rigs. Several reputable companies have established themselves with excellent products.

Butterfly Labs
Avalon
BitFurry
KNC
AsicMiner

For a comprehensive comparison of bitcoin mining hardware, visit bitcoinx.com.

http://www.bitcoinmining.com/bitcoin-mining-hardware/

by Trinity 1/7/2014, 16:17

eh, proradio www.bitcoinbalkan.com cheers

Registrirala se na forum, prilično prijateljska atmosfera za razliku od bitcointalk.org/index.php?topic=25215.0

Jedan zgodan blog : http://kako-zaraditi-bitcoin.nr.rs/

by Trinity 16/7/2014, 22:07

Upozorenje Evropske Banke korisnicima crypto valuta

Evropska banka, koja je ranije upozorila da potrošače da su nemaju mehanizme zaštite ukoliko se uključe u trgovanje crypto-valutama, ponovila je svoje upozorenje.

Prošlog Decembra, Evropska banka je dala specifično upozorenje da ne postoje mehanizmi zaštite u trgovanju Bitcoinima. Vlasti su smestile regulaciju Bitcoina sa strane, pravdajući se suviše komplikovanim sistemom. "Regulacija trgovanja crypto-valutama zahteva da se osnuje potpuno nezavisno regulaciono telo."Za tržišne učesnike poput banaka, EB navodi, da bi regulacija morala da pokriva zahteve kapitala, segregaciju korisničkih računa i "integritet virtuelne valute, uključujući njihovu šemu tj princip rada, ključne komponente, protokole i knjigu transakcija."

U nedostatku ovih parametara, regulacija se čini nedefinisanom: "Kao neposrednu reakciju, Evropska banka savetuje državne centralne banke da obeshrabruju kreditne institucije, institucije koje vrše usluge plaćanja i institucije koje se bave elektronskim novcem, da izbegavaju kupovinu, prodaju i čuvanje cryptovaluta."

Spominjući pad Mt Goxa i velikog broja istraga korisnika crypto-valuta, Evropska banka izražava zabrinutost vezanu za nedovoljnu zaštitu korisnika. Navodi da korisnici mogu da izgube njihova sredstva na različite načine, od probijanja njihovih walleta, gubitka podataka usled hardverskog kvara ili probijanja zaštite menjačnica, bez ikakvog vida zaštite potrošača u vidu refundiranja izgubljenih sredstava.

Njihovo kompletno saopštenje uključujući i spisak sigurnosnih rizika možete pronaći na ovom linku.

http://www.bitcoinbalkan.com/upozorenje-evropske-banke-korisnicima-crypto-valuta

by Trinity 16/7/2014, 22:29

[size=13]Datum objavljivanja: 14. srp 2014.[/size]
Can Wall Street Guy win Bitcoin Girl's heart?

Lyrics:
Oh oh oh oh, oh oh oh oh oh oh

Bitcoin Girl!

She's been living in her Bitcoin world.
I bet she's never had a Wall Street guy.
She kissed the Federal Reserve goodbye -
for digital dimes.

Bitcoin Girl!
She's been living in her Bitcoin world.
where all her currency is peer-to-peer.
No regulations that can interfere --
unlike my tears.

And when she wakes up
she shakes up her "mine."
Because she knows what she wants:
it's finite supply.

That's when I realized
it is all decentralized!

She's a Bitcoin girl!
You know I've seen her in her Bitcoin world.
She's so over paper money,
which has no value intrinsically.
No stability.

D-o-o-o-o-o-ge

She's the Bitcoin Girl.
She's been living in her Bitcoin world.
Like her transactions I'm anonymous.
Look at her reading the Economist's
analysis.

Digital wallet in her pocket,
it's strange
that when I'm walking
I'm rattling with loose change.

But there's hope for me yet,
after all,
I've got Internet!

She's a Bitcoin girl.
She doesn't care that I can buy her pearls.
But maybe someday when my public key
creates a brand-new cryptocurrency
she'll pick me.

D-o-o-o-o--o-ge

She's the Bitcoin Girl,
the Bitcoin Girl --
You know I'm in love with
the Bitcoin Girl.

by Trinity 17/7/2014, 20:35

Bitcoin Girl - Naomi Brockwell

http://bitcoingirl.org/

Bitcoin - Page 3 NB_P-140

Bitcoin Girl is an educational platform that explores the cryptocurrency world and provides an alternative to the current trend in journalism of only printing doom-and-gloom as a way of getting a larger audience. There is massive demonization of cryptocurrency in the media, and it’s no wonder when you consider the vested interests that banks and governments have in destroying cryptocurrency. As a result, the only positive arguments that are honest about the benefits of cryptocurrency tend to be hidden away in esoteric subreddit threads, and are largely inaccessible to the average, unacquainted person. For this reason, the vast majority of people lap up what the mainstream media tells them, which is mainly negative and poorly informed.
Instead of being skeptical about this new protocol, people should be overwhelmingly excited about it and all of its possibilities we haven’t even begun to unlock. Bitcoin technology has the power to bring about incredible social change. It can lift people out of poverty. It can give people back freedom of speech. It can bring community together in a new peer-to-peer world—the full potential of which we’ve only seen a glimpse.

That is what Bitcoin Girl is: a more accessible way for people to learn about bitcoin, so that they are not forced to depend on a biased media for their information. It shows bitcoin in a refreshing way: as an exciting, powerful tool with the potential to create incredible positive change.

by Trinity 10/8/2014, 20:49

Hacker Hijacks ISP Networks to steal $83,000 from Bitcoin Mining pools

Till now, he have heard about “Bitcoin digital wallet hacked” or “Bitcoin website hacked”, but now a hacker has stolen cryptocurrency from mining pools and generated $83,000 in digital cash in more than four months by gaining access to a Canadian Internet provider.

Bitcoin is a virtual currency that makes use of cryptography to create and transfer bitcoins. Users make use of digital wallets to store bitcoin addresses from which bitcoins are received or sent. Bitcoin uses public-key cryptography so that each address is associated with a pair of mathematically linked public and private keys that are held in the wallet.

Researchers at Dell SecureWorks Counter Threat Unit (CTU), a cyber intelligence company, have discovered a series of malicious activities in which a cryptocurrency thief used bogus Border Gateway Protocol (BGP) broadcasts to hijack networks belonging to no less than 19 Internet service providers, including Amazon and other hosting services like DigitalOcean and OVH, in order to steal cryptocurrency from a group of bitcoin users.

"In total, CTU researchers documented 51 compromised networks from 19 different Internet service providers (ISPs)," the Dell team wrote in a blog post on Thursday.

By broadcasting malicious network routes through BGP, the Bitcoin thief was able to redirect a portion of online traffic from legitimate currency-mining servers on one network to bogus servers on another network that masqueraded as the genuine one.

According to the team of researchers, the hacker specially targeted a collection of Bitcoin mining “pools” – bitcoin producing cooperatives in which users contribute the computing power of their systems to gain their own percentage of the resulting cryptocurrency the pool produces.

The bogus mining servers allowed miners to continue mining cryptocurrency but that spoofed servers never issued any payouts to the miners. Instead, all payouts from the overall mining activity went straight into the pockets of the attacker. In just a period of four months, the attacker generated approximately $83,000 in cryptocurrency.

"The threat actor hijacked the mining pool, so many cryptocurrencies were impacted," the researchers write. "The protocols make it impossible to identify exactly which ones, but CTU researchers have mapped activity to certain addresses."

Not just Bitcoins, the hacker also stole mining power to release other cryptocurrencies, such as Dogecoin, HoboNickels and WorldCoin. According to the researchers, a small-time miner lost as many as 8,000 Dogecoins, which is equivalent to $1.53 in today's real-world dollars, as a result of the hack.

The team identified the activity after noticing that some of their own mining power were stolen, and traced the malicious activity back to an internet service provider (ISP) in Canada, which remains anonymous. However, it is still unclear exactly how the hacker managed to gain access to the ISP’s infrastructure to re-route users’ mining power to their own pool.

"Unlike network routing protocols that can automatically initiate a connection from one network, both ends of BGP-connected networks (also known as a 'peers') must be manually configured to communicate," the researchers write. "This requirement ensures malicious networks cannot hijack traffic without human intervention from a legitimate network."

To prevent similar attacks in the future, only opt in to the Resource Public Key Infrastructure (RPKI) service that uses cryptographic certificates to verify the origins of network messages, says the researchers.

Also, researchers recommended cryptocurrency miner that their mining pool servers use Secure Socket Layer (SSL) encryption protocol, which prevents connections from being re-routed to another server, even if that server has the same IP address as the legitimate one.

http://thehackernews.com/2014/08/hacker-hijacks-isp-networks-to-steal_7.html

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