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Archive for the ‘cryptocurrencies’ category: Page 61

Dec 18, 2016

Bitcoin Arbitrage: Can you profit?

Posted by in categories: bitcoin, cryptocurrencies, economics, finance, internet

At Quora, I occasionally play, “Ask the expert”. Today, I was asked if the difference between quotes at various Bitcoin exchanges presents a profit opportunity.

In addition to my answer, one other cryptocurrency enthusiast offered pithy, one-line response: He said “Buy local, sell internationally and pocket the difference!” I tend to believe the opposite is more likely to generate profit: Buy internationally and sell locally. But, I am getting ahead of myself. Here is my answer [co-published at Quora]…


Question:
A Bitcoin exchange in my country quotes a different rate than
international markets. Can I profit from the price difference?

Answer:
Buying and selling a commodity with the intention of profiting from the difference in price in various markets, regions or exchanges is called arbitrage. Typically, the item must be widely traded and fungible. Although it can be a tangible item (one that must be delivered or stored, like gold, oil, frozen orange juice or soy beans), arbitrage is more practical when applied to an ‘item of account’, such as foreign currency, equity shares, stock futures, or Bitcoin.

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Dec 7, 2016

Is it too late to get into Bitcoin and the Blockchain?

Posted by in categories: bitcoin, cryptocurrencies, hardware, innovation, internet

At Quora, I occasionally role play, “Ask the expert” under the pen name, Ellery. Today, I was asked “Is it too late to get into Bitcoin and the Blockchain”.

A few other Bitcoin enthusiasts interpreted the question to mean “Is it too late to invest in Bitcoin”. But, I took to to mean “Is it too late to develop the next big application—or create a successful startup?”. This is my answer. [co-published at Quora]…


The question is a lot like asking if it is too late to get into the television craze—back in the early 1930s. My dad played a small role in this saga. He was an apprentice to Vladamir Zworykin, inventor of the cathode ray tube oscilloscope. (From 1940 until the early 2000s, televisions and computer monitors were based on the oscilloscope). So—for me—there is fun in this very accurate analogy…

John Logie Baird demonstrated his crude mechanical Televisor in 1926. For the next 8 years, hobbyist TV sets were mechanical. Viewers peeked through slots on a spinning cylinder or at an image created from edge-lit spinning platters. The legendary Howdy Doody, Lucille Ball and Ed Sullivan were still decades away.

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Nov 22, 2016

Proof Of Stake — By Fred Wilson | AVC

Posted by in categories: bitcoin, cryptocurrencies

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“One of the most interesting questions to me is whether we can figure out how to implement a proof of stake consensus mechanism in a large decentralized trustless public blockchain (ie Bitcoin, Ethereum, etc).”

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Nov 15, 2016

Voting On The Blockchain — Fred Wilson | AVC

Posted by in categories: computing, cryptocurrencies

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“I haven’t placed a vote on a blockchain yet, but it’s so simple to do that I expect I will be doing it frequently soon enough.”

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Nov 11, 2016

Bitcoin users relax: Quantum computing no match for SHA-2 encryption

Posted by in categories: bitcoin, cryptocurrencies, economics, encryption, quantum physics

Worried about security for your bitcoin in the face of quantum computing? According to computer researchers, there’s no reason to be.

Source: https://hacked.com/breathe-easy-bitcoiners-quantum-computing…encryption

Quantum mech

Some people assume that once quantum computing comes along modern encryption technologies will be outpowered. But experts are starting to posit that hash functions and asymmetric encryption could defend not only against modern computers, but also against quantum attackers from the future.

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Oct 31, 2016

Blockchain, cryptocurrencies, and central banks: Opportunity or threat? — By Dirk Niepelt | World Economic Forum

Posted by in category: cryptocurrencies

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“Central banks increasingly are under pressure to keep ‘their’ currencies attractive. They should let the general public access electronic central bank money, not just financial institutions ( Niepelt 2015). To do this, they should embrace the blockchain.”

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Oct 31, 2016

Diminishing Bitcoin Mining Rewards

Posted by in categories: bitcoin, cryptocurrencies, economics, internet, privacy

By now, most Bitcoin and Blockchain enthusiasts are aware of four looming issues that threaten the conversion of Bitcoin from an instrument of academics, criminal activity, and closed circle communities into a broader instrument that is fungible, private, stable, ubiquitous and recognized as a currency—and not just an investment unit or a transaction instrument.

These are the elephants in the room:

  • Unleashing high-volume and speedy transactions
  • Governance and the concentration of mining influence among pools, geography or special interests
  • Privacy & Anonymity
  • Dwindling mining incentives (and the eventual end of mining). Bitcoin’s design eventually drops financial incentives for transaction validation. What then?

As an Op-Ed pundit, I value original content. But the article, below, on Bitcoin fungibility, and this one on the post-incentive era, are a well-deserved nod to inspired thinking by other writers on issues that loom over the cryptocurrency community.

This article at Coinidol comes from an unlikely source: Jacob Okonya is a graduate student in Uganda. He is highly articulate, has a keen sense of market economics and the evolution of technology adoption. He is also a quick study and a budding columnist.

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Oct 31, 2016

Bitcoin Fungibility: A Benefit of privacy & anonymity

Posted by in categories: bitcoin, cryptocurrencies, economics, internet, privacy

I was pointed to this article by Jon Matonis, Founding Director, Bitcoin Foundation. I was sufficiently moved to highlight it here at Lifeboat Foundation, where I am a contributing writer.

On Fungibility, Bitcoin, Monero and ZCash … [backup]

This is among the best general introductions I have come across on traceability and the false illusion of privacy. The explanation of coin mixing provides and coin_mixing-03excellent, quick & brief overview.

Regarding transaction privacy, a few alt-coins provide enhanced immunity or deniability from forensic analysis. But if your bet is on Bitcoin (as it must be), the future is headed toward super-mixing and wallet trading by desgin and by default. Just as the big email providers haved added secure transit,
Bitcoin will eventually be fully randomized and anonymized per trade and even when assets are idle. It’s not about criminals; it’s about protecting business, government and individuals. It’s about liberty and our freedoms. [Continue below image]

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Sep 8, 2016

Blockchain Art Exhibitions Explore the Bitcoin Technology’s Future — By Steven Norton | The Wall Street Journal

Posted by in categories: bitcoin, cryptocurrencies, media & arts

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“That contemporary artists are exploring blockchain further suggests the technology has reached a level of cultural significance beyond bitcoin’s initial hype.”

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Aug 10, 2016

Quantum computing and cryptocurrencies: Are Steemit and bitcoin safe?

Posted by in categories: bitcoin, computing, cryptocurrencies, encryption, quantum physics, security

Article repeats a lot of the knowns on QC such as bit v. Qubit; and finally provides some good info on pros and cons of Bitcoin and Lamport signatures technique with QC. However, the author didn’t seem to mention any of the work that D-Wave for example is doing with Block chaining. Also, I saw no mention of the work by Oxford on the logic gate which improve both the information processing performance and the security of information transmissions.


In a classical computer bits are used that can either be 0 or 1. In a quantum computer these bits are replaced with Qubits (quantum bits). These Qubits can be 0 or 1, or both at the same time. This is caused by a phenomenon in the quantum realm called superposition. At scales the size of an atom and small molecules, the spin of particles is not determined until it is observed. A pair of Qubits can be in any quantum superposition of 4 states, and three Qubits in any superposition of 8 states. In general, a quantum computer with n Qubits can be in a superposition of up to 2^n different states simultaneously (this compares to a normal computer that can only be in one of these 2^n states at any one time). Because of this, a quantum computer is able to perform computations at the same time, while classical computers perform computations one at a time.

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