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Topic: .oOo. Allgemeiner Talk-Thread 2015 .oOo. - page 3. (Read 16846 times)

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www.btcaudio.eu || LIVE-AUDIO-TICKER
eine kleine Webseite von mir: http://btcaudio.tk/

der aktuelle Bitcoinkurs wird im Sekunden- oder Minutentakt per Sprache über die Lautsprecher ausgegeben  Wink

damit ihr nicht immer auf eure Bildschirme glotzen müsst!  Grin

qwk
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Weiss jemand wie Wladimir van der Laans Foren-Account heisst?
wumpus
legendary
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Weiss jemand wie Wladimir van der Laans Foren-Account heisst?
legendary
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legendary
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Bitcore Team developing A Multisignature Wallet

Drew Cordell 
26/03/2014 

The Bitcore team has been developing Cosign: A Multisignature Wallet. This technology would provide additional layers of security to protect Bitcoins. This wallet would allow for a multi-signature wallet to validate all transactions before they are sent, thus significantly reducing theft that occurs within businesses that deal with digital currencies. Let’s say we have a 5 signature wallet, one person can spend the Bitcoins like normal; however, the transaction will appear as partially signed and not be broadcast to the Bitcoin network unless it is signed by 3 of the co-signers of the wallet.
 
Let’s look at this in terms of running an exchange. We will name the exchange, Exchange ‘X’ just to be generic. Exchange ‘X’ had a system compromise, and now they fear they have lost their private key to they address holding the exchange’s funds. With the new Cosign multisignature wallet, the thief would be unable to extract the funds because the other co-signers would not sign the transaction,, and it would not be broadcast to the bitcoin network. In order for the bitcoins to be stolen, the thief would not only have to take your private key, but the private keys of two more cosigners. The security of this wallet is like nothing we have seen before. Once it is completed it will be an absolute necessity for all exchanges, and hopefully get rid of all of the theft problems that have been occurring recently. The cosign multisignature wallet will make it easy to run an exchange responsibly.

The first user creates a new wallet on Cosign and shares the ID of the wallet with the four other cosigners. When the other cosigners join it creates an extended private key, which has a new extended public key. The extended public key can be shared to receive payments, and extended private key is kept in secret. This system effectively gives all of the cosigners equal control of the wallet and prevents a thief, or one of the members of the wallet from running off with any of the funds.

HD wallets solve the problem of low privacy by allowing one master extended private key to generate as many public/private keys as you need. Extended public keys come from the master extended public key. Once one extended public key is generated for the cosigners of the wallet, all members of that wallet will have access to the same addresses generated and every future address that is derived from the original public key.The wallet will use Web RTC; that will further strengthen the security of the wallet by minimizing the need of the wallet to connect to a central server. The wallet will be able to connect P2P rather than going through a server for the entire transaction, the server is just needed to initiate a connection.

The Cosign Multisignature Wallet will bring a new era of security to Bitcoin, and exchanges that deal with Bitcoin. I believe that many issues regarding security of exchanges will be fixed when this new wallet is released. The security features of this wallet are substantially better than anything else we have available today.
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Quelle: http://www.cryptocoinsnews.com/2014/03/26/bitcore-team-developing-multisignature-wallet/
legendary
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MAIN INCUBATOR

Commerzbank gründet Inkubator für Finanztechnologie-Startups


Lydia Skrabania
26. März 2014

Banker und Visionäre – eher keine geläufige Wortkombination. Die Commerzbank will mit dem Main Incubator Startups unterstützen und das Banking umkrempeln.

Wider die Ideen-Not

Die Commerzbank gründet die Main Incubator GmbH (www.main-incubator.com), eine Brutstätte für Finanztechnologie-Startups. Der Inkubator mit Sitz in Frankfurt am Main will als hundertprozentiges Tochterunternehmen der Commerzbank ausgewählte Startups aus der FinTech-Branche von der Gründung bis zur Markreife unterstützend begleiten. Die Großbank selbst wird dabei nach eigenen Angaben als Anker-Investor fungieren.

Bislang hinken die Banken den sich durch die Digitalisierung verändernden Kundenbedürfnissen hinterher. Das will das Frankfurter Geldhaus nun ändern. „Die Commerzbank kennt ihre Kunden und deren Wünsche – und sie ist sich notwendiger Weiterentwicklungen bewusst”, so Holger Werner, stellvertretender Vorsitzender des Investment Komitees des Main Incubator. Durch die gezielte Investition in FinTech-Startups will die Großbank Innovationen im Bankgeschäft unterstützen.

Laut seiner Website sucht der Main Incubator dabei „visionäre Startups“, die das „Banking der Zukunft gestalten wollen“. Ausschreibungen für Förderungen sind bereits online, die Geschäftsidee kann dort jedoch auch initiativ gepitcht werden. Die ausgewählten Startups würden je nach Bedarf mit Beteiligungskapital, Experten-Know-how, Büroräumen und einer entsprechenden Infrastruktur in Frankfurt unterstützt. „Zudem profitieren sie von der Stabilität und dem Zugang zu Kunden einer führenden Großbank“, sagte die Mitgründerin des Commerzbank-Inkubators Birgit Storz.

Um diese haben sich in den vergangenen Monaten schon eine ganze Reihe von „jungen Wilden“ bemüht, oft mit Erfolg, immer mit viel Ehrgeiz. Startups wie Auxmoney, Avuba oder Lendico preschen ins Bankgeschäft vor. Der Kredit-Scorer Kreditech sammelte erst im Januar 15 Millionen US-Dollar für seine Expansionspläne ein. Auf das Potenzial, das dem Fintech-Segment zugesprochen wird, scheinen nun auch die Banken immer stärker zu schielen.
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Quelle: http://www.gruenderszene.de/allgemein/commerzbank-main-incubator
qwk
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 Grin Grin@comic




legendary
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LOL, sehr geiler Comic.  Grin Grin Grin
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February 12, 2014, 09:02:56 PM
#76
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Florida Targets High-Dollar Bitcoin Exchangers


State authorities in Florida on Thursday announced criminal charges targeting three men who allegedly ran illegal businesses moving large amounts of cash in and out of the Bitcoin virtual currency. Experts say this is likely the first case in which Bitcoin vendors have been prosecuted under state anti-money laundering laws, and that prosecutions like these could shut down one of the last remaining avenues for purchasing Bitcoins anonymously.

michaelhackfeedbackWorking in conjunction with the Miami Beach Police Department and the Miami-Dade State Attorney’s office, undercover officers and agents from the U.S. Secret Service’s Miami Electronic Crimes Task Force contacted several individuals who were facilitating high-dollar transactions via localbitcoins.com, a site that helps match buyers and sellers of the virtual currency so that transactions can be completed face-to-face.

One of those contacted was a localbitcoins.com user nicknamed “Michelhack.” According to this user’s profile, Michelhack has at least 100 confirmed trades in the past six months involving more than 150 Bitcoins (more than $110,000 in today’s value), and a 99 percent positive “feedback” score on the marketplace. The undercover agent and Michelhack allegedly arranged a face-to-face meeting and exchanged a single Bitcoin for $1,000, a price that investigators say included an almost 17 percent conversion fee.

According to court documents, the agent told Michelhack that he wanted to use the Bitcoins to purchase stolen credit cards online. After that trust-building transaction, Michelhack allegedly agreed to handle a much larger deal: Converting $30,000 in cash into Bitcoins.

Investigators had little trouble tying that Michelhack identity to 30-year-old Michell Abner Espinoza of Miami Beach. Espinoza was arrested yesterday when he met with undercover investigators to finalize the transaction. Espinoza is charged with felony violations of Florida’s law against unlicensed money transmitters – which prohibits “currency or payment instruments exceeding $300 but less than $20,000 in any 12-month period” — and Florida’s anti-money laundering statutes, which prohibit the trade or business in currency of more than $10,000.

Police also conducted a search warrant on his residence with an order to seize computer systems and digital media. Also arrested Thursday and charged with violating both Florida laws is Pascal Reid, 29, a Canadian citizen who was living in Miramar, Fla. Allegedly operating as proy33 on localbitcoins.com, Reid was arrested while meeting with an undercover agent to finalize a deal to sell $30,000 worth of Bitcoins.

Documents obtained from the Florida state court system show that investigators believe Reid had 403 Bitcoins in his on-phone Bitcoin wallet alone — which at the time was the equivalent of approximately USD $316,000. Those same documents show that the undercover agent told Reid he wanted to use the Bitcoins to buy credit cards stolen in the Target breach.

Nicholas Weaver, a researcher at the International Computer Science Institute (ICSI) and at the University of California, Berkeley and keen follower of Bitcoin-related news, said he is unaware of another case in which state law has been used against a Bitcoin vendor. According to Weaver, the Florida case is significant because localbitcoins.com is among the last remaining places that Americans can use to purchase Bitcoins anonymously.

“The biggest problem that Bitcoin faces is actually self-imposed, because it’s always hard to buy Bitcoins,” Weaver said. “The reason is that Bitcoin transactions are irreversible, and therefore any purchase of Bitcoins must be made with something irreversible — namely cash. And that means you either have to wait several days for the wire transfer or bank transfer to go through, or if you want to buy them quickly you pay with cash through a site like localbitcoins.com.”

One very popular method of quickly purchasing Bitcoins — BitInstant — was shuttered last year. Last month, BitInstant CEO Charlie Shrem was arrested for money laundering, following allegations that he helped a man in Florida convert more than a million dollars in Bitcoins for use on the online drug bazaar Silk Road.

It’s still unclear how the defendants Espinoza and Reid were able to obtain so many Bitcoins for sale, although a review of Michelhack’s profile suggests little more than arbitrage — that is, buying Bitcoins for $700 apiece and selling them for a couple hundred dollars more.

Weaver said he anticipates that more states will soon seek to crack down on high-dollar Bitcoin sellers on localbitcoins.com. “I’d expect many more state cases like this one because it will act to strangle the lifeblood of the online dark markets,” such as Silk Road, Weaver said. “If you want a significant amount of anonymous Bitcoins, right now this community is about the only mechanism still available.”

News of the Florida actions comes on the heels of the arraignment of Ross Ulbricht — the alleged onetime owner of the Silk Road. Ulbricht was scheduled to be arraigned in New York today.

The court documents in this case also offer a great example of the traceability of Bitcoin transactions — a potential danger for both those seeking anonymous payments and for law enforcement officials posing as criminals as part of an undercover investigation. The ICSI’s Weaver noted that, by examining the times and transactions in the criminal complaint, it appears that this is the Bitcoin wallet associated with the undercover officer.
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Source: http://krebsonsecurity.com/2014/02/florida-targets-high-dollar-bitcoin-exchangers/
legendary
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February 02, 2014, 06:34:32 AM
#75
Quote
The Paypers is the leading independent source of news, analysis for the global payments industry.

The Paypers is the Netherlands-based leading independent source of news and intelligence for professionals in the global payment community. Our products are aimed at merchants, payment services providers, processors, financial institutions, start-ups, technology vendors and payment professionals and have a special focus on all major trends and developments in payments-related industries including online and mobile payments, online/mobile banking, cards, cross-border e-commerce, e-invoicing and SEPA. We are also keen on keeping our readership informed with regard to online fraud prevention innovations and the most significant trends in the e-identity space.

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- SEPA Paypers - monthly news and analysis on the Single Euro Payments Area.

---> http://www.thepaypers.com/ <---
legendary
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Monero Evangelist
January 11, 2014, 04:54:36 PM
#74
TREZOR USB-Stick signiert Bitcoin-Transaktionen

Quote
Software-Brieftaschen für die virtuelle Währung Bitcoin sind zu unsicher. Deshalb haben sich die beiden tschechischen Entwickler Marek Palatinus und Pavol Rusnak das Trezor-System ausgedacht. Bitcoin-Transkationen werden auf diesem speziellen USB-Dongle gespeichert.
Trezor ist eigentlich ein kleiner Rechner mit USB-Anschluss. Darauf werden Bitcoin-Transaktionen gespeichert. Im Gegensatz zu den anfälligen Software-Lösungen sei Trezor vollkommen sicher, sagen die beiden Entwickler Marek Palatinus und Pavol Rusnak aus Prag. Damit lässt sich die Brieftasche mit der virtuellen Währung in der Hosentasche herumtragen und auf jedem Rechner mit einer Bitcoin-Software nutzen. Ärger gab es jedoch um den ursprünglichen Preis, den die Trezor-Macher in einer ersten Pre-Order-Kampangne für ihr Gerät verlangten.

http://www.golem.de/news/trezor-usb-stick-signiert-bitcoin-transaktionen-1401-103810.html
newbie
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January 11, 2014, 02:02:18 PM
#73
Eben in einem anderen Forum wo sich nebenbei über Bitcoins utnerhalten wurde einen
Hinweis auf diesen Artikel gefunden (weiß allerdings nicht ober er hier im Forum schon mal gepostet wurde)

http://www.faz.net/aktuell/feuilleton/quantentechnologie-fuer-die-nsa-wer-die-supercomputer-baut-12735964.html

Es geht darum das -natürlich nur unter größten Vorbehalten- die NSA die Entwicklung von Bitcoin erfunden hat/pushed um sehr schnelle Rechner entwickeln zu lassen die Entschlüsselungen schneller
knacken können als bisher..

Wäre ja mal ne überlegung auszuprobieren wie schnell man mit 1TH/s "Minern" Passwörter
entschlüsselt?
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