Posts

Showing posts with the label bitcoin

What's Going On with Bitcoin Now? Brendan Cody, Impact Investing Intern, George Washington University

Image
The meteoric rise of cryptocurrencies supported by the blockchain has regulatory agencies, financial institutions and central banks around the globe asking the same question: What in the world is going on here?











Applications in finance, data storage, cybersecurity, and government merit the attention blockchain technology has received. As of last week, Bitcoin (the first and most notable cryptocurrency) approached $5,000, up +600% on the year compared to a 20% return for the Dow Jones Industrial Average over the same time. (Bitcoin has since returned to the more mundane level of $4,470 as of 9/5/17) Other cryptocurrencies ,including Litecoin and Ethereum, have seen a similar pattern of rise, retreat and rise.

Governments and financiers acted decisively in the past month in an attempt to seemingly make up for lost time. The Securities and Exchange Commission issued new regulations on the proliferation of Initial Coin Offerings (see: the American Banker Newspaper BankThink section - SEC t…

SEC takes jab at startups while leaving the big banks alone

Image
The Securities and Exchange Commission’s concern about “initial coin offerings” is understandable. There are significant problems in the ICO marketplace, but new markets always have issues. Unfortunately, the SEC’s recent restrictions defining the tokens sold through such offerings as “securities” completely miss the point and once again will constrain the ability of startups to raise much-needed capital without having to go to a bank or venture capitalist first.

See: https://www.americanbanker.com/opinion/sec-takes-jab-at-startups-while-leaving-the-big-banks-alone

Blockchain 1.0

Image
NOTE: Previously, I wrote an introductory article on cryptocurrencies and other applications of blockchain, The article can be found here: http://twisri.blogspot.com/2017/05/summary-of-bitcoin-and-its-underlying.html. The article below builds on this by explaining the actual “nuts and bolts” of the bitcoin blockchain. Our goal is to have the reader walk away with a better, more technical understanding of the bitcoin blockchain. If the reader is not familiar with terms and concepts such as: blockchain, cryptocurrencies, distributed ledger, bitcoin mining, etc. It may be best to read the introductory article first or obtain the basic knowledge from other sources.)

Many people have a rough idea of how the bitcoin blockchain works, but few understand precisely how it works. This article intends to explain the blockchain in a clear, simple, and visual way.
Part 1 The Hash and the Blockchain [1]
Before we talk about blockchain, let’s talk about a hash [2]. The hash is the foundation of blockc…

Too late for bitcoin?

Image
On April 17, 2017, we made the following suggestion: "Get some Bitcoins. Now! Why? Our economic forecasting models (the same ones that predicted Trump's win, btw) show an extended period of instability coming, and soon. Should things really go south, bitcoin will be one of the few transaction tools you can depend on. (You can thank me later..just don't say we didn't warn you and give you a way out that we both could benefit from...but I digress...) If you don't know what Bitcoin is, this may help: 'Bitcoin is a new kind of money that can be sent from one person to another without the need for a trusted third party such as a bank or other financial institution; it is the first global, decentralized currency. One of the most important elements of Bitcoin is the blockchain, which tracks who owns what, similar to how a bank tracks assets. What sets the Bitcoin blockchain apart from a bank's ledger is that it is distributed, meaning anyone can view it. Since B…

Summary of bitcoin and its underlying technology-blockchain, by Henry Zhang, Impact Investing Intern. University of Toronto.

Image
Bitcoin

Everyone’s probably heard of “bitcoin,” but many only have the vaguest idea about it and little understand the underlying technology. Even fewer realize the true impact this technology may have on the future.
Bitcoin is a cryptocurrency. A cryptocurrency is a digital program or asset designed to work like currency. It seeks to have the following properties: a store of value, a unit of account, and a medium of exchange  Bitcoin is the most popular cryptocurrency of the seven hundred out there. Other major cryptocurrencies are Ethereum, Ripple, and Litecoin.

Cryptocurrencies work via a system of paired-public, private keys - randomly generated numbers. Each user in the cryptocurrency network has a unique pair of public and private keys. The public key is a string of numbers available to everybody on the network. They are used for encryption. The private key is only available to an individual. It is used for decryption of the paired public key. The bitcoin transfer mechanism works…