The use of blockchain technology is required for vaccine passports to function

Vaccines are starting to offer hope of normal life, economic resurgence, and renewed global connections. The EU has implemented its Covid-19 digital passport for all citizens and residents to enable freedom of movement across borders on July 1. However, many international leaders have been out of step, applying yesterday's answers to tomorrow's issues as they consider the dangers and rewards of reopening their borders.

Covid passports on offer are functional but short-sighted, says Dr. Andrew Wightman. He argues that a globally recognized standard is needed to facilitate international travel and to restore our economies in a post-covid world. In the past year, Dark Web marketplaces have seen a surge in listings for fake vaccine passports.

Blockchain's distributed ledger stores data in a decentralized way, removing the need for governments to maintain databases at a national level. The technology has the potential to resolve many of these challenges, yet is astonishingly under-utilized by many countries such as Estonia. Blockchain technology and infrastructure is no longer new, yet is still poorly understood by decision-makers. Asian countries are leading the charge to integrate it into the travel verification process. Singapore is poised at the front of this movement and should look to partner other innovative Asian countries.

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Why Energy Concerns Around Blockchain May Be a Misconception

Blockchain has made headlines recently for using more energy than airlines or even entire countries. Different types of chains have different impacts on the environment based on how they're designed. The proof-of-stake (POS) model is significantly more energy-friendly than the traditional Proof of Work (POW) model. Blockchains operate differently than traditional IT systems. Different types of chains have different impacts on the environment based on how they're designed. Proof-of-work (POW) is what's behind traditional "mining," where miners compete to solve a mathematical puzzle. The Bitcoin Foundation has switched to a more energy-friendly model of proof-of-stake. Proof-of-stake (POS) requires those working on the chain to have skin in the game. POS also reduces power consumption and accelerates the handling of transactions. The model is being adopted by big names in the industry such as Bitcoin, & Ripple.

Understanding the technology underlying cryptocurrencies

Blockchain technology could prove transformative for industries, including financial services. A primer on technology, sponsored by the Organization for Economic Co-operation and Development, was recently published. It highlights the array of opportunities and challenges that blockchain's popularity could have on the financial industry, among many other fields. A blockchain is a shared ledger of transactions between parties in a network. It can diminish the role of intermediaries in the transfer of data. The Organization for Economic Cooperation and Development (OECD) sees far-reaching potential for blockchain in the global economy. Blockchains can vary in the way they operate. One of the prime strengths of a blockchain is its immutability. Once a transaction is made to the ledger, it can not be undone. The first U.S. bitcoin futures exchange-traded fund became available in October 2021. Forty percent of fund selectors report that clients are increasingly demanding cryptocurrency

White Hat hacker was offered a $500,000 reward from Poly Network

Following a breach that resulted in the loss of $610 million by cryptocurrency exchange Poly Network earlier this week, the company announced a $500,000 "bug reward" to whoever was responsible. With an emphasis on enabling users to move or exchange tokens across various blockchains, Poly Network is a decentralized finance (Defi) platform that enables peer-to-peer transactions intending to facilitate peer-to-peer transactions. He had "helped us improve Poly Network's security," the company said. A "white hat" hacker tries to disclose cyber vulnerabilities. "Mr. White Hat" was also to get a $500,000 reward as part of the digital money repatriation talks. It said that the hacker had replied to the offer, but did not specify whether or not the offer had been accepted. However, it has been reported that the hacker has returned $340 million in money and has transferred the bulk of what is left to a digital wallet owned by them and Poly Network, acc

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