Blockchain: A Graph Primer

Bitcoin and its underlying technology Blockchain have become popular in recent years. Designed to facilitate a secure distributed platform without central authorities, Blockchain is heralded as a paradigm that will be as powerful as Big Data, Cloud Computing and Machine learning. Blockchain incorporates novel ideas from various fields such as public key encryption and distributed systems. As such, a reader often comes across resources that explain the Blockchain technology from a certain perspective only, leaving the reader with more questions than before. We will offer a holistic view on Blockchain. Starting with a brief history, we will give the building blocks of Blockchain, and explain their interactions. As graph mining has become a major part its analysis, we will elaborate on graph theoretical aspects of the Blockchain technology. We also devote a section to the future of Blockchain and explain how extensions like Smart Contracts and De-centralized Autonomous Organizations will function. Without assuming any reader expertise, our aim is to provide a concise but complete description of the Blockchain technology.Comment: 16 pages, 8 figure

No. 23: Labour Migration Trends and Policies in Southern Africa

Since 1990, there have been major changes to longstanding patterns of intra-regional labour migration within the Southern African Development Community (SADC). At the same time, new channels of migration to and from the region have opened. Labour migration is now more voluminous, dynamic and complex than it has ever been. This presents policy-makers with considerable opportunities and challenges. In order to understand the exact nature of these challenges, it is important to have a good grasp of current labour migration characteristics and trends. Unfortunately, reliable, accurate and comprehensive data on labour migration is not available. The quality and currency of data varies considerably from country to country. A regional labour migration observatory would make the future writing of an overview of migration trends a much easier task. The primary objectives of this overview of labour migration trends and policy implications is fourfold: (a) to review recent characteristics and trends in labour migration within and from the SADC region. Official statistics as well as recent survey data are drawn on to generate an overall picture of current characteristics and trends in the region; (b) to highlight some of the critical and urgent issues pertaining to labour migration in the region; (c) to discuss the main features of labour migration strategies and policies and legislative and regulatory frameworks in countries covered by the Southern African Development Community (SADC); and (d) to review the prospects for the freer circulation of migrant labour in the Southern African region. This brief focuses primarily on the period since 1990 and restructuring of labour migration in the wake of the collapse of apartheid, new global migration forces, the end of the wars in Mozambique and Angola and the current economic and political situation in Zimbabwe. Although the brief provides an overview of the region as a whole, the report concentrates on the major labour migration channels in the region (from countries such as Lesotho, Swaziland, Malawi, Mozambique and Zimbabwe to South Africa). The report also considers the nature and implications of new migrant movements to and from SADC

Cryptocurrencies Are Taxable and Not Free From Fraud

In this report, the authors discuss cryptocurrencies — especially bitcoin — and argue that because the IRS lists them as property, they are taxable, and because they are not as anonymous as once thought, they are not free from fraud. Cryptocurrencies are digital assets used as a medium of exchange, but they are not really coins. They can be sent electronically from one entity to another almost anywhere in the world with an internet connection. There are many cryptocurrencies in the market, including bitcoin, ethereum, ethereum classic, litecoin, nem, dash, iota, bitshares, monero, neo, and ripple. Many of the cryptocurrency networks are not controlled by a single entity or company; instead, a decentralized network of computers keeps track of the currency using a token ID. A ledger maintains a continuously growing list of date stamped transactions in real time called “blocks.” This technology is known as blockchain, which records, verifies, and stores transactions without a trusted central authority. The network instead relies on decentralized autonomous organizations (DAOs) with uncertain legal standing

Racing to Regulation: A Comparative Analysis of Virtual Currency Regulation in Alaska And the Proposed Alaska Money Services Act Carlos Manzano

The emergence of virtual currencies has revolutionized the financial industry by creating an alternative form of payment that seeks to insulate individuals from government and bank influence. Yet, federal regulation of virtual currency has remained limited. Many state legislators have rushed to fill the gap by enacting laws regulating virtual currency use and transmission. This state-by-state approach has led to significant variation between state regulatory regimes, creating a regulatory spectrum of lenient to strict regulatory approaches. In March 2017, Alaska House Representatives Zach Fansler and Sam Kito proposed the Alaska Money Services Act to require licensing for virtual currency activity. The bill’s proposed requirements lean towards the strict side of the regulatory spectrum, bringing the potential to drive virtual currency businesses away from Alaska. This Note proposes that Alaska legislators enact virtual currency legislation that adequately balances technological innovation with consumer protection through several recommendations, including: (1) enacting virtual currency-specific legislation rather than importing regulation into existing and outdated laws, (2) clearly defining the legislation’s scope, (3) collaborating with stakeholders in enacting legislation, (4) including an on-ramp to ensure emerging startups are not overly burdened, (5) tailoring the level of regulation to the level of risk a virtual currency business poses to Alaska consumers by tiering requirements to transmission volume, (6) requiring only relevant information in the application, and (7) reducing agency discretion to revoke licenses

TB STIGMA – MEASUREMENT GUIDANCE

TB is the most deadly infectious disease in the world, and stigma continues to play a significant role in worsening the epidemic. Stigma and discrimination not only stop people from seeking care but also make it more difficult for those on treatment to continue, both of which make the disease more difficult to treat in the long-term and mean those infected are more likely to transmit the disease to those around them. TB Stigma – Measurement Guidance is a manual to help generate enough information about stigma issues to design and monitor and evaluate efforts to reduce TB stigma. It can help in planning TB stigma baseline measurements and monitoring trends to capture the outcomes of TB stigma reduction efforts. This manual is designed for health workers, professional or management staff, people who advocate for those with TB, and all who need to understand and respond to TB stigma

The Building Blocks of Blockchain

Blockchain. The term is ubiquitous—it’s going to protect everyone’s data, provide the backbone of every supply chain, make every contract smart, and so much more. But what is blockchain, actually? And can it really do all of this? (No.) This article is for those who want to learn the basics about this technology. I will describe the essential fundamentals of Bitcoin, other cryptocurrencies, and blockchain. I will explore the technology behind blockchain, including an explanation of what “mining” is and how it helps users trust information on a blockchain. I will also explain some of the ways that blockchain is changing the law and legal practice—and why lawyers and law faculty should pay attention to these developments