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(5 articles)

Defending the Blockchain: How Bitcoin Cash is Pioneering Post-Quantum Asset Protection

As quantum computing accelerates from a theoretical milestone to an imminent reality, the cryptographic foundations of the cryptocurrency world face an unprecedented existential threat. If a Cryptographically Relevant Quantum Computer (CRQC) becomes operational, it will easily break Elliptic Curve Cryptography (ECDSA)—the exact security mechanism guarding billions of dollars in legacy Bitcoin (BTC) and Bitcoin Cash (BCH) addresses. While both networks face this looming "Q-Day," the Bitcoin Cash development community has recently stepped forward with an innovative proposal: a Challenge-Based Transition Protocol designed to securely salvage and migrate vulnerable funds even after the underlying cryptography has been compromised. The Quantum Threat: The "Burn or Steal" Dilemma The primary quantum vulnerability doesn't lie in blockchain mining, but in wallet addresses where the public key has been exposed (such as legacy P2PKH addresses or reused inputs). Using Shor’s algorithm, a quantum adversary could effortlessly derive a private key from an exposed public key, granting them full control over dormant or unmigrated funds. For years, the broader crypto ecosystem has debated two harsh solutions to this problem: 1. Steal: Do nothing, allowing quantum attackers to plunder early wallets (including Satoshi Nakamoto’s estimated 1.1 million coins). 2. Burn: Hard-fork the network to make all unmigrated legacy addresses permanently unspendable, destroying billions in wealth to protect network stability. Bitcoin Cash researchers have introduced a third path—a cryptographic rescue mission. The BCH Strategy: Challenge-Based Transition Protocol Published on the Bitcoin Cash Research platform, the proposed protocol allows users to safely move funds from quantum-vulnerable addresses to quantum-resistant (QR) destinations, even if ECDSA has already been broken by an attacker. The protocol operates through a unique, cost-asymmetric commitment mechanism divided into four phases: 1. The Commit Phase Long before an attacker strikes, a user creates a hidden, unlinkable on-chain commitment using a one-way hash function: pk: The vulnerable public key. • secret: A secret value known only to the wallet owner (deterministically generated from their seed phrase). • qr_address: A new, quantum-safe destination address (e.g., a Quantumroot vault). Because it is hashed, observers and quantum computers cannot see which public key or funds this commitment is protecting. 2. The Reveal Phase When the user is ready to migrate their funds to the quantum-safe address, they reveal the secret and the destination qr_address. 3. The Challenge Window Once the reveal happens, a time-locked challenge window opens. If a quantum attacker attempts to counterfeit the transaction or claim the funds using a stolen private key, they must submit their own commitment. This creates a Cost Asymmetry: • The legitimate owner can prove ownership using an older, aged commitment that pre-dates the attacker's visibility of the keys. • The system uses a priority mechanism where older commitments displace newer ones, effectively neutralizing the quantum attacker's ability to spoof ownership in real-time. 4. Finalization If no older, valid commitment challenges the claim within the specified block window, the funds are safely routed to the user's new quantum-resistant vault. Why This Matters for the Broader Crypto Space The Bitcoin Cash approach highlights a key advantage of its architectural philosophy: flexibility. By utilizing on-chain dust limits, smart contracts, and flexible transaction parameters, BCH can test and implement complex recovery protocols that would be politically or technically gridlocked on the main Bitcoin (BTC) network. If successful, this challenge-based architecture could serve as a blueprint for the entire blockchain industry, proving that legacy crypto assets don't have to be abandoned or left to hackers when the quantum age arrives.

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Privacy in public places is a wrong concept in itself

## Hello everyone!!! ### I hope so you all are fine and happy 😊 We live in the world where everyone is a creator but everyone is a creator in different ways. Some use their creativity in making things while some use their creativity in editing thing's and in this era of social media everyone loves to share what they've or what they do , while some share in public and some share in privacy. ## Capturing picture in public places!!! When we visit outside with family or alone we love to capture moment and save them in the phone memory as it's our new way to save memories digitally. And sometimes there's a lot of crowd in public places especially when there's a events like Christmas m, Eid or Dewali mean on such kind of events there's a lot of crowd of people. And people obviously make picture and blog's and sometimes public people come in their pictures and videos and they upload on the social media too to get fame or it's their a way of earning whatever the reason is but if sometimes you come in the public picture and you think it's a crime to share your picture in the public. Then you should change your thinking because we can't change people thought's but we could start from us and that's the better way. Then, in my opinion, it's not a crime to share the pictures in publicly but there's actually the point. If you're the main subject of the photo then you can complain to cyber crime that someone publish your picture without your permission but if you just come accidentally in the picture then it's not a crime because they didn't have intentions to capture you but you come in pictures because you're there by chance. Public places are actually for Public and you can't demand for privacy in the public because don't you know the meaning of public and private. Public mean public and for everyone and private mean you've option to keep things private. In public places you can't asked for privacy. Because it's for everyone and everyone can take pictures there and record the moments while some share on the social media and some are not as everyone isn't the same actually. #### Final thought's!!! It's not a crime to share your picture without any intentions and you came accidentally but if still you think it's a crime then why not you just stay at home because if you love your privacy then you should stay at home and keep you private. And especially during the events you should stay at home because during events every camera is open. We can't close every camera there also we don't know the people there so it's better option to stay at home and keep you private. #### Thank you for your time and support 🙏

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The Secret “Tipping Point” Inside Every Person That Decides If Society Will Change

Picture this: A government launches a major campaign to get everyone to switch to electric cars, stop using plastic, or support a bold new climate policy. The usual plan? Target the most influential people — the super-connected influencers or community leaders — and hope the idea spreads like wildfire. But according to new research, this classic strategy often falls short. Scientists from the University of Zurich have discovered a much smarter way. In a groundbreaking new [preprint](https://doi.org/10.21203/rs.3.rs-5202815/v1), they’ve bridged the gap between individual psychology and how behaviors actually spread through society. ### The clever experiment They ran large choice experiments where people decided which energy policies they would support or which messaging apps they would install. For every participant, the researchers calculated a personal “threshold” — the exact percentage of friends or peers who need to adopt something before that person is willing to follow. They then fed these real individual thresholds into realistic computer simulations running on actual social networks. They tested different strategies for starting change — and compared which ones worked best. ### What they discovered Traditional strategies that simply pick the most connected or popular people often performed poorly. The winning approaches were those that understood each person’s unique tipping point: - Targeting people surrounded by friends who are easy to convince - Using advanced network strategies that factor in real human thresholds When the cost of convincing someone depends on how resistant they are personally, these threshold-aware strategies clearly won. ### Why this is a game-changer For the first time, we have a practical method that truly combines what drives individual decisions with how change spreads across entire communities. It means governments and organizations can stop guessing. Run a relatively simple survey, measure people’s real thresholds, and choose exactly the right starting points for maximum impact. The approach works for climate action, public health campaigns, new technology adoption, and almost any large-scale behavioral shift. ### What it means for us Big societal change isn’t just about finding the loudest voices. It’s about understanding each person’s hidden tipping point. Measure the thresholds. Target the right clusters. Watch real change finally take off. This research gives us a powerful new toolkit for turning good ideas into widespread reality. 🧪 Neuro Insights Weekly: latest breakthroughs in psychology & neuroscience

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In onze brief aan de Commissie Digitale Zaken zetten we digitale autonomie op de agenda

Repost van PublicSpaces

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Exploring Nostr Relay Servers: Navigating Your Choices for Enhanced Connectivity

Here, we explore how to select a Nostr relay server, delve into the public and paid relay dynamics, and offer insights on setting up your relay server.

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