Tuesday, 14 August, 2018

Blockchain Explained

Blockchain Explained

Posted on Friday, 16 February, 2018 by Zheluo Cai

Blockchain Explained.

Blockchain is an algorithm and distributed data structure for managing electronic cash without a central administrator among people who know nothing about one another. Originally designed for the crypto-currency Bitcoin, the blockchain architecture was driven by a radical rejection of (government-guaranteed) money and bank-controlled payments. Blockchain is a Distributed Ledger Technology (DLT) that was invented to support the Bitcoin cryptocurrency. The developer of Bitcoin, Satoshi Nakamoto envisioned people spending money without friction, intermediaries, regulation or the need to know or trust other parties. Technically, the original blockchain is separable from Bitcoin, but this report will show that the blockchain design is so specific to Bitcoin that it’s not a good fit for much else. The central problem in electronic cash is Double Spend. Because pure electronic money is just data, nothing stops a currency holder from trying to spend it twice. Blockchain solves the Double Spend problem without a digital reserve fund or similar form of an umpire. Blockchain monitors and verifies Bitcoin transactions by calling upon a decentralised network of volunteer-run nodes to, in effect, vote on the order in which transactions occur. The network’s algorithm ensures that each transaction is unique. Credit: Steve Wilson for ZDNet.

Read Article Here:

https://www.cnet.com/news/blockchain-explained-builds-trust-when-you-need-it-most/

The Pencil Nebula in Red and Blue.
Image Credit & Copyright: José Joaquín Perez. This shock wave ploughs through interstellar space at over 500,000 kilometres per hour. Near the top in this colour composite, thin, bright, braided filaments are actually long ripples in a cosmic sheet of glowing gas. Catalogued as NGC 2736, the Pencil Nebula is about 5 light-years long and 800 light-years away but represents only a small part of the Vela supernova remnant which is around 100 light-years in diameter; the expanding debris cloud of a star that was seen to explode about 11,000 years ago. Initially, the shock wave was moving at millions of kilometers per hour but has slowed considerably, sweeping up surrounding interstellar material. In the featured narrow-band, wide field image, red and blue colours track the characteristic glow of ionized hydrogen and oxygen atoms, respectively.

NASA Awards Contract for Construction of New Research Support Building Monday, 13 August, 2018
NASA has selected Walsh Construction Company II, LLC of Chicago to build a new Research Support Building (RSB) at the agency’s Glenn Research Center in Cleveland.
NASA, ULA Launch Parker Solar Probe on Historic Journey to Touch Sun Sunday, 12 August, 2018
Hours before the rise of the very star it will study, NASA’s Parker Solar Probe launched from Florida Sunday to begin its journey to the Sun, where it will undertake a landmark mission. The spacecraft will transmit its first science observations in December, beginning a revolution in our understanding of the star that makes life […]

UN should never be a target, Baghdad bombing survivors stress, 15 years after deadly attack Monday, 13 August, 2018
Source: UN News Service Country: Iraq The truck-bomb attack on the UN headquarters in Baghdad on 19 August 2003 was one of the most lethal in UN history, and marked a turning point in how the UN and aid groups operate in the field.On 19 August 2003, a suicide bomber drove a truck full of […]
Huyendo de la violencia, nicaragüenses buscan seguridad en Costa Rica Monday, 13 August, 2018
Source: UN High Commissioner for Refugees Country: Costa Rica, Nicaragua Los enfrentamientos en Nicaragua han dejado por lo menos 317 muertos, de acuerdo con la Comisión Interamericana de Derechos Humanos. Más de 2.000 personas han quedado heridas.Miles de personas que huyen de los asesinatos, las violaciones de derechos y las tensiones en su país, están […]

Burma (Myanmar) - Level 1: Exercise Normal Precautions Tuesday, 24 July, 2018
Exercise normal precautions in Burma. Some areas have increased risk. Read the entire Travel Advisory. Do not travel to: Maungdaw, Rathedaung, Ponnagyun, and Buthidaung townships in Rakhine State due to civil unrest. Paletwa township in Chin State due to civil unrest. Hpakan, Mansi, Momauk, Sumprabum, Tanai, and Waingmaw townships in Kachin State due to civil […]
Haiti - Level 3: Reconsider Travel Tuesday, 17 July, 2018
Reconsider travel to Haiti due to crime and civil unrest. On July 9, 2018, the U.S. government authorized the voluntary departure of non-emergency U.S. government personnel and their families. Violent crime, such as armed robbery, is common. Protests, tire burning, and road blockages are frequent and often spontaneous. Local police may lack the resources to […]

USA Monday, 13 August, 2018
Latest update: Summary – edit to information; Yosemite National Park now re-opened, California and Oregon wildfires ongoing.
GOV.UK
Philippines Monday, 13 August, 2018
Latest update: Terrorism section (Kidnapping) - addition of information; the local authorities in Palawan have recently warned the public of a heightened risk from kidnapping; if in the area, you should follow the advice of local security and remain vigilant at all times
GOV.UK

Known as “the prehistoric Sistine Chapel,” the Lascaux Caves, a cave complex in southwestern France, contain some of the most remarkable palaeolithic cave paintings in the world, from at least 15,000 years ago. The cave was discovered on 12 September 1940 by four teenagers, Marcel Ravidat, Jacques Marsal, Georges Agnel, and Simon Coencas, as well as Ravidat’s dog, Robot. Public access was made easier after World War II. By 1955, the carbon dioxide produced by 1,200 visitors per day had visibly damaged the paintings. The cave was closed to the public in 1963 in order to preserve the art.

Bible verses brought to you by bVerse Convert and BibleGateway.com