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Blockchain

Blockchain

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Blockchain (database) - Wikipedia Blockchain formation. The main chain (black) consists of the longest series of blocks from the genesis block (green) to the current block. Orphan blocks (purple) exist outside of the main chain. Bitcoin transactions (January 2009 – September 2015) If two groups of users disagree about a proposed change to a public (permissionless) blockchain protocol or algorithms, the two groups are free to each run their own versions of the blockchain software, which creates two descendant blockchains with their own separate histories from that point forward. There are two types of forks: Soft forks and hard forks.

Blockchain Definition 51% attack refers to an attack on a blockchain – usually bitcoin's, for which such an attack is still hypothetical – by a group of miners controlling more than 50% of the network's mining hashrate, or computing power. The attackers would be able to prevent new transactions from gaining confirmations, allowing them to halt payments between some or all users. They would also be able to reverse transactions that were completed while they were in control of the network, meaning they could double-spend coins.

Amsterdam harnesses the sharing economy for social good Amsterdam has created dozens of new digital platforms encouraging citizens to participate in the sharing economy. An app called ParkFlyRent leases out cars parked by holidaymakers at Schiphol airport. Instead of the cars sitting idle for weeks, they are rented out and a portion of the income is handed to the owners. An app called Djeepo finds private storage spaces (basements, attic and spare rooms) for those needing extra room for their belongings. Konnektid allows users to share skills like guitar playing or foreign languages. What is Blockchain Technology? A Step-by-Step Guide For Beginners Is blockchain technology the new internet? The blockchain is an undeniably ingenious invention – the brainchild of a person or group of people known by the pseudonym Satoshi Nakamoto. By allowing digital information to be distributed but not copied, blockchain technology created the backbone of a new type of internet.

Blockchain defined: PwC The end game for public and private blockchains isn’t just digital currency—it’s digital business flows. By Alan Morrison Blockchains are primary enablers of smart contracts. This section compares and contrasts both general and banking-industry-specific blockchains and describes banking industry viewpoints on the issue. Capital - All eyes on Malmo, but not because of Trump Malmö’s international image is in need of a makeover — one that matches the genuine experience of its resident expats and citizens alike. Saddled with a reputation for crime, the grittier neighbourhoods within Sweden’s third-largest urban hub have gained notoriety in recent years after appearing in global smash-hit Nordic Noir drama The Bridge, while more recent international debates have questioned safety amid large-scale immigration. US President Donald Trump has suggested that media and the authorities have hushed up how bad tensions are in the city, while UK politician Nigel Farage claimed it was the rape capital of Europe. There is another side to Sweden’s third-largest urban hub But there is another side to the city, where ornate fourteenth century buildings nestle beside sparkling new hotels and apartments along the Öresund strait.

Blockchain: the answer to life, the universe and everything? Have you heard the good news? The blockchain is here – and it’s going to save everything. If you aren’t tied to the tech community, you might not have picked up on this salvation rhetoric. But you probably have heard of bitcoin, which burst into the public consciousness before imploding dramatically in 2014. But now, bitcoin is starting to look less important than the engine that drives it – the blockchain. It was created to solve a problem that had been puzzling digital activists for decades: how to create digital property without a central authority keeping track of who owns what.

Ethereum - Wikipedia Ethereum was proposed in late 2013 by Vitalik Buterin, a cryptocurrency researcher and programmer. Development was funded by an online crowdsale during July–August 2014.[3] The system went live on 30 July 2015. History[edit] Origin[edit] Citizen social science methods for social research - School of Social Sciences - The University of Manchester Citizen Social Science is a form of participatory social research which engages the wider public directly in the social research process. The methodology covers a range of activities but centrally involves citizens taking a role in different phases of social science research including, for example, data gathering, coding and analysis. Citizen Social Science can be as simple as volunteers gathering observation data as they go about their usual activities but can include higher levels of participation and involvement including in the design and write up of social research. Crowd-sourcing experts Citizen Social Science has close links with citizen science where volunteers contribute to research such as, for example, observing galaxies, weather and environmental monitoring including air pollution, finding fossils and counting wildlife. Volunteers are also already being engaged through gaming tools to help code data such as, for example, identifying cancer cells from images within a game.

How blockchain is transforming business models The traditional business model is under attack… as well it should be. In this era of disruption, it’s absolutely necessary to redefine business models and archetypes as a whole. This post dives into the benefits of blockchain, its impact on the financial system, and how some companies are experimenting. Traditional financial services companies, and banks in particular, are behind the curve in terms of technology. An accenture report claims that most big banks have systems as old as the 1970s or even 1960s, which mean that newer IT systems are just patched on top of the core to deliver online and mobile banking capabilities.

About the Citizens' Assembly Project - UK Citizens' Assembly PilotsUK Citizens' Assembly Pilots The award-winning Citizens' Assembly project originated in a conversation between a diverse group of organisations and individuals who felt that a more deliberative approach to democratic reform was both desirable and useful. Meanwhile, the question of ‘where power lies’ has become a major issue in British politics. These developments prompted the Electoral Reform Society to come together with academics from the University of Sheffield, the University of Southampton, the University of London and the University of Westminster to put in place a process to facilitate renewed civic engagement on such central constitutional questions.

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