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What is Web 3.0, exactly?
Web 3.0, also known as Web3, is the third generation of the World Wide Web. Web 3.0 is meant to be decentralized, open to everyone (with a bottom-up design), and built on top of blockchain technologies and developments in the Semantic Web, which describes the web as a network of meaningfully linked data.
Web 3.0 is based on a specific set of principles, technical parameters, and values that distinguish it from earlier iterations of the World Wide Web: Web 2.0 and Web 1.0. Web 3.0 envisions a world without centralized companies, where people are in control of their own data and transactions are transparently recorded on blockchains, or databases searchable by anyone.
Web 2.0 vs Web 3.0
The main distinctions between Web 2.0 and Web 3.0 involve data storage, connectivity, currency, and decentralization. Web 2.0 is about creating content and interacting with websites. Web 3.0 means immersing yourself in the digital experience, and it involves concepts like individual control of personal data, cryptocurrency, and decentralized record keeping on the blockchain.
Whereas Web 2.0 operates on fiat money, Web 3.0 relies on cryptocurrencies and a decentralized finance (DeFi) model. This is part of the decentralization objective, which shifts control from centralized companies or governments to users or the collective. The premise of decentralization extends beyond currency, covering everything from apps to data.
Performance-wise, Web 3.0 will likely be slower than Web 2.0, at least at the beginning. That’s because transactions are processed over multiple servers (independently operated), instead of on one or a group of centralized servers.
It appears that we’re now in the process of moving from Web 2.0 to Web 3.0. In fact, some people say that we’re already living in Web 3.0
Web 3.0 exists in a technical manner, like blockchain, and a user experience manner, like a Web 3.0 app that can decipher your intent. Here are some examples of Web 3.0 that already exist:
Blockchain technology: a decentralized record of transactions that are stored on a huge number of computers across the internet. All transactions can be publicly viewed, rely on sophisticated encryption, and are permanent.
Cryptocurrency: a decentralized currency that isn't controlled by any government or central bank, using blockchain technology to record transactions. There are thousands of cryptocurrencies that currently exist, with Bitcoin being the most well-known.
NFT: a non-fungible token linked to a unique digital or physical asset that can't be replaced with something else. NFTs are not cryptocurrencies, which consist of fungible or tradable tokens. This creative example of Web3 technology is bound to evolve in the future.
Distributed computing or edge computing: this technology aims to deliver online data and services as close to where it's being requested or generated as possible. Edge computing leverages the processing power of many devices linked together, working as a kind of decentralized supercomputer. Decentralized computing is closely linked to the Internet of Things.#ContentStar##BountyCreator##NewYearCelebration##GateioBountyCreator##HotTopicDiscussion# Buenos Aires to issue blockchain-based digital ID
The first documents available on-chain in Buenos Aires will include birth and marriage certificates, along with proof of income and academic verification.
Buenos Aires, the capital of Argentina, is making a major move toward integrating its bureaucracy with blockchain technology. Starting in October, the city’s residents can access identity documents via a digital wallet, according to an announcement on Sept. 28.
The first documents available on-chain will include birth and marriage certificates, along with proof of income and academic verification. The announcement notes that health data and payment management will be integrated in the future, and that a roadmap for rolling out the blockchain-based solution across the country will be defined by the end of 2023.
Behind the project infrastructure is QuarkID, a digital identity protocol built by Web3 firm Extrimian. QuarkID wallets are powered by zkSync Era, an Ethereum scaling protocol using zero-knowledge rollups. The technology allows one party to prove to another that a statement is true without revealing any specific information about the statement itself.
“This is a monumental step towards a safer and more efficient future for government services in Latin America,” said Guillermo Villanueva, CEO of Extrimian.
Data stored within the wallets will be self-sovereign, enabling citizens to manage the delivery of their credentials when interacting with government, businesses and other individuals. ZkSync Era will act as the settlement layer for QuarkID, ensuring that each citizen holds the correct credentials.
The Argentine government and the City of Buenos Aires envision their digital identity framework as being a public good. According to Diego Fernandez, Buenos Aires’ secretary of innovation: “With this development, Buenos Aires becomes the first city in Latin America, and one of the first in the world, to integrate and promote this new technology and set the standard for how other countries in the region should use blockchain technology for the benefit of their people.”
Argentine officials are investigating a similar initiative in the country, the digital ID project Worldcoin. In August, local authorities disclosed there was a probe over privacy concerns related to Worldcoin’s collection, storage and use of customer data.
Worldcoin is also under scrutiny in Europe and Africa since its global launch in July. Founded by Sam Altman, co-founder of OpenAI, the project collects retinal scans to verify users.
*Source: Cointelegraph 
