Autor Cointelegraph By Shailey Singh

What is Worldcoin, and how does it help preserve World ID?

WLD token is listed and available via various avenues allowing people to choose the option of purchasing that best suits their needs. Prices are subject to market trends.  WLD is available for purchase on all major centralized exchanges (CEXs), such as Binance, KuCoin, OKX, Bybit and Huobi. CEXs, such as Binance, offer multiple purchase options via credit card or bank deposit, or buying a stablecoin like Tether (USDT) or Binance USD (BUSD), and then using that coin to buy WLD. It is also available for swaps on decentralized finance (DeFi) platforms like Uniswap and PancakeSwap. The levels of security, dependability and liquidity vary among platforms. Sam Altman and co-founder Alex Blania expressed in an open letter that the WLD token would only be accessible in regions of the world where legal compliance is more feasible. At the time of launch on July 24, 2023, WLD was unavailable in United States, with the company clearly stating that the use, purchase or access of WLD tokens is not intended for U.S. persons, including U.S. citizens, residents, individuals located within the U.S., as well as companies incorporated, located or registered in the United States. Moreover, anyone who completes an Orb scan in the U.S. would not be eligible for the token drop. 

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What is an atomic swap, and how does it work?

Atomic swaps work by utilizing smart contracts and hashlock cryptographic techniques to secure digital asset exchanges. “Atomic” is a term used to describe processes that either conclude successfully or do not initiate at all — there is no other alternative. An atomic swap for crypto trading implies only two possible outcomes: Either the trade is successfully executed, or no action occurs. In simpler terms, an atomic swap creates a mechanism where both sides of the cryptocurrency trade must satisfy all predetermined conditions before the trade can be finalized. This is achieved through the implementation of smart contracts, which are self-executing programs designed to enforce the conditions necessary for a transaction to be successful. Atomic swaps utilize hashed time lock contracts (HTLCs), which are a form of smart contract, to enable secure and trustless exchanges of cryptocurrencies. HTCLs, in essence, “lock” a transaction and demand that both parties verify the information before the exchange can proceed. Atomic swap smart contracts have two essential components: Hashlock The hashlock mechanism allows the contract to be locked with a unique cryptographic key that can only be generated by the cryptocurrency depositor. This key, which is a unique data piece, ensures that the swap is only finalized when both parties approve the transaction. Timelock The timelock mechanism is like a deadline for the swap. It ensures that the transaction is completed within a certain amount of time, and in the event it does not happen, it returns the depositor’s funds. Timelock essentially helps secure the transaction. Both parties must approve the swap within the specified time limit or else the transaction gets aborted and the crypto is returned to its respective owners.

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What is Immutable, explained

Immutable is a game development platform that simplifies building Web3 games on the Ethereum blockchain.  Headquartered in Sydney and co-founded in 2018 by James Ferguson, Robbie Ferguson and Alex Connolly, this leading Web3 gaming platform is focused on a mission to bring digital ownership to players by making it easy to build Web3 games for mainstream adoption. Immutable is funded and backed by prominent crypto VC funds and transformational tech investors like Bitkraft Ventures, King River Capital, AirTree, Temasek, Coinbase and more.  The Immutable platform empowers gaming studios and developers with a powerful suite of products, delivering clear solutions that amplify their capabilities and transform the way they create, launch and distribute games.  Its pre-built solutions designed for ease of use enable developers to launch their games faster without compromising on either security or the gaming experience, thereby solving two major blockchain gaming industry-wide issues. Additionally, builders receive Web3 guidance, live support for their communities and access to Immutable’s extensive gaming ecosystem. Immutable has also been at the forefront of enabling zero-knowledge (ZK) scaling solutions for Ethereum and offers multiple ZK-based scaling options, including Immutable X, a rollup based on StarkWare technology, and Immutable zkEVM, powered by Polygon.  Immutable Games, its own gaming studio, is a global player in Web3 game development and pioneered the world’s first blockbuster nonfungible token (NFT) trading-card game Gods Unchained. It is currently building the highly anticipated mobile role-playing game (RPG) Guild of Guardians while also partnering with third-party game developers on games such as MetalCore, Infinite Victory and Shardbound.   Related: A beginner’s guide on blockchain layer-2 scaling solutions

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What are cross-border payments, and how do they work?

Ripple has become a significant player in the realm of blockchain-enabled global payments, while JPMorgan’s Onyx offers intriguing solutions for facilitating cross-border transactions through innovative digital asset payments. Using distributed ledger technology, Ripple enables financial institutions to send and receive money in different currencies in a matter of seconds, rather than the days or even weeks that traditional international payments can take. XRP, the native currency of Ripple, is the bridge asset to facilitate international financial transactions between different currencies. This means that the funds are converted into XRP and then back into the destination currency, which allows for near-instant settlement and reduces the need for intermediaries and corresponding banking relationships. Related: What is Ripple: Overview, history and XRP cryptocurrency Stellar is another decentralized, open-source blockchain network that enables the transfer of digital currencies. The Stellar network uses its own cryptocurrency, called Lumens (XLM), as a bridge currency to facilitate cross-border transactions. This eliminates the need for intermediaries, such as banks or centralized exchanges. Onyx, launched by JPMorgan in October 2020, also leverages blockchain technology to improve wholesale payment transactions while offering the efficiency, speed and security of JPMorgan’s financial services offerings. It is working on developing its offerings — Liink and Onyx Digital Assets — as innovative blockchain-based offerings for processing cross-border payments.

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