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      Pourquoi certains bitcoins sont plus rares que d’autres ?

      news.movim.eu / Numerama · Thursday, 14 March - 15:38

    À l'heure où le bitcoin atteint de nouveaux sommets, certains se mettent à collectionner des bitcoins « rares ». À New-York, la prestigieuse maison de vente aux enchères Sotheby’s vend même des centimes de bitcoins à plus de 100 000 dollars la pièce. Pourquoi certains bitcoins sont-ils plus rares que d’autres ?

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      Comment sécuriser simplement son portefeuille bitcoin

      news.movim.eu / Numerama · Tuesday, 5 March - 13:21

    Si la blockchain a pour réputation d'être une technologie difficilement piratable, les portefeuilles et les transactions de crypto-monnaies sont des cibles privilégiées des hackers. Plusieurs solutions existent pour sécuriser ses devises rapidement.

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      Elon Musk drops price of X gold checks amid rampant crypto scams

      news.movim.eu / ArsTechnica · Friday, 5 January - 20:05

    Elon Musk drops price of X gold checks amid rampant crypto scams

    Enlarge (credit: ALAIN JOCARD / Contributor | AFP )

    There's currently a surge in cryptocurrency and phishing scams proliferating on X (formerly Twitter)—hiding under the guise of gold and gray checkmarks intended to mark "Verified Organizations," reports have warned this week.

    These scams seem to mostly commandeer dormant X accounts purchased online through dark web marketplaces, according to a whitepaper released by the digital threat monitoring platform CloudSEK. But the scams have also targeted high-profile X users who claim that they had enhanced security measures in place to protect against these hacks.

    This suggests that X scammers are growing more sophisticated at a time when X has launched an effort to sell even more gold checks at lower prices through a basic tier announced this week.

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      Cloudflare Blocks Abusive Content on its Ethereum Gateway

      news.movim.eu / TorrentFreak · Tuesday, 21 November - 21:58 · 4 minutes

    cloudflare logo Popular Internet infrastructure service Cloudflare serves millions of customers and provides a variety of connectivity and privacy features to the general public.

    People can freely use the company’s open DNS resolver 1.1.1.1 , for example, or use its IPFS and Ethereum gateways to access content on these decentralized web services.

    One of Cloudflare’s main aims is to make the Internet more secure while respecting the privacy of its users. This laudable goal is broadly respected but in common with other internet services, abuse of Cloudflare’s services can lead to conflicting situations.

    The California-based company previously terminated service to controversial sites including the Daily Stormer and Kiwi Farms . These actions were taken voluntarily, with Cloudflare citing an immediate threat to human life as the reason for the Kiwi Farms intervention.

    Domain Blocking

    In addition to these rare events, the Internet infrastructure company is also subject to court orders from around the globe. In some cases, these orders require the company to block access to piracy-related domain names.

    Cloudflare mentions these blocking orders in its latest transparency report which covers the second half of 2022. The report doesn’t mention the number of court orders or blocked domains, but it confirms that Cloudflare complies with legitimate legal rulings.

    “If we determine that the order is valid and requires Cloudflare action, we may limit blocking of access to the content to those areas where it violates local law, a practice known as ‘geo-blocking’,” Cloudflare writes.

    DNS Blocking

    DNS blocking orders apply locally and shouldn’t affect people in other countries. However, things got more complicated recently when an Italian court required Cloudflare to restrict access to three torrent sites through its public DNS resolver 1.1.1.1.

    Cloudflare fiercely objected to the order but ultimately lost the legal battle. That left the company with no other option than to take action. But, instead of blocking content through its global DNS resolver, it geo-blocked the domains for Italians.

    “To the extent that those websites used Cloudflare services, Cloudflare took steps following the issuance of the order to disable access to those websites for users in Italy or from Cloudflare equipment in Italy.

    “Cloudflare took action to geoblock all three domains that were addressed by the court’s order and were using our service at the time the orders were issued via Cloudflare’s pass-through CDN and security services,” the company added.

    IPFS and Ethereum Restrictions

    In its most recent transparency report, Cloudflare further notes that it has implemented access restrictions on its public Ethereum gateway. The company doesn’t store any content on the Ethereum network, nor can it remove any. However, it can block access through its service.

    If Cloudflare receives valid abuse reports or copyright infringement complaints, it will take appropriate action. The same applies to the gateway for the decentralized IPFS network.

    In its previous transparency report, Cloudflare already mentioned more than 1,000 IPFS actions a figure that increased slightly in the second half of last year. At the same time, Cloudflare also restricted access to 99 ‘items’ on the Ethereum network.

    ethereum cloudflare actions

    Since these are ‘gateway’ related restrictions there’s no impact on the content hosted on IPFS or Ethereum. Instead, it will only make it impossible to access content through Cloudflare’s service.

    It’s not clear how many of these restrictions are abuse or copyright-related, as not much context is provided. The Ethereum actions are, at least in part, a response to the U.S. Department of Treasury’s sanctions against the cryptocurrency tumbler Tornado Cash .

    “Those sanctions raise significant legal questions about the extent to which particular computer software, rather than individuals or entities that use that software, can be subject to sanctions,” Cloudflare writes.

    “Nonetheless, to comply with legal requirements, Cloudflare has taken steps to disable access through the Cloudflare-operated Ethereum Gateway to the digital currency addresses identified in the designation.”

    DMCA Notices and Subpoenas

    There are more obvious copyright responses as well. While Cloudflare generally doesn’t block content in response to DMCA notices for customers that use its CDN services, it does remove infringing content permanently hosted on its servers.

    These hosting services have expanded over the years and the same is true for the volume of valid DMCA notices received, up from 18 to 972 in the span of a year, as shown below. That’s still a fairly modest number for a company with millions of customers.

    cloudflare dmca

    Finally, Cloudflare reports that the number of civil subpoenas, including those issued under the DMCA, has decreased. Rightsholders including the Motion Picture Association (MPA) typically use these requests to obtain identifying information about Cloudflare customers.

    In the second half of last year, the company received 20 civil subpoenas which targeted 57 domain names. That’s the lowest number since Cloudflare first disclosed this statistic five years ago, signaling a downward trend.

    A copy of Cloudflare’s latest Transparency Report is available here (pdf)

    From: TF , for the latest news on copyright battles, piracy and more.

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      Reddit’s blockchain-based “Community Points” rewards crash after sunsetting

      news.movim.eu / ArsTechnica · Wednesday, 18 October - 18:41 · 1 minute

    Reddit logo amidst darkened coins

    Enlarge

    Reddit's Community Points, a blockchain-based rewards system for quality posts, comments, and other contributions in a subset of subreddits, is going the way of many similar tokens launched during the crypto boom times: away.

    As of November 8, coins like the "MOON" that r/CryptoCurrency used for tips, premium features, and even voting shares will be removed from users' Vaults. Noticing this, the value of most Reddit-based coins took a nearly straight drop on Tuesday after Reddit's announcements . MOON was trading just over $0.20 at 1 pm Eastern, shortly before the announcement in its subreddit. Shortly before 3 pm, MOON had dropped just below $0.02, a loss of more than 85 percent, with fellow Reddit currencies BRICK (r/FortNiteBR) and DONUT (r/EthTrader) seeing similarly precipitous plunges .

    MOON's price, as seen on TradingView, during the day when Reddit announced its sunsetting of Community Points, such as MOON.

    MOON's price, as seen on TradingView, during the day when Reddit announced its sunsetting of Community Points, such as MOON. (credit: TradingView)

    While most people likely never noticed the loss of their Community Points, some who actively acquired them, or even bought more on the blockchain, are reporting losses of thousands of dollars. Conspiratorial claims of Reddit having "rugged" the currencies—pulling money from the system before a sudden shutdown— floated on social media .

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      $1.5M crypto scheme leads to 2-year prison term for ex-Coinbase manager

      news.movim.eu / ArsTechnica · Wednesday, 10 May, 2023 - 16:07

    $1.5M crypto scheme leads to 2-year prison term for ex-Coinbase manager

    Enlarge (credit: SOPA Images / Contributor | LightRocket )

    Yesterday, a former Coinbase product manager, Ishan Wahi, was sentenced to two years in prison for running the first cryptocurrency insider trading scheme investigated by the United States Department of Justice.

    Wahi had pleaded guilty after Coinbase and the FBI found that he provided confidential information on upcoming Coinbase crypto asset listings to his brother, Nikhil, and his friend Sameer Ramani. The multiple tipoffs led to profits of approximately $1.5 million as the men went undetected for 10 months, trading 55 digital assets ahead of Coinbase listing announcements that generally caused huge spikes in asset market valuation.

    The US attorney for the Southern District of New York, Damian Williams, condemned Wahi's actions, saying that he "violated the trust placed in him by his employer by tipping others with valuable confidential information regarding Coinbase’s planned token listings."

    Read 19 remaining paragraphs | Comments

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      Les cryptos en hausse de 30 % : le grand rebond est-il enclenché ?

      news.movim.eu / Numerama · Tuesday, 28 February, 2023 - 16:07

    Aurait-on encore vendu trop tôt la peau du bitcoin ? La capitalisation globale des cryptomonnaies s’est remplumée d'environ 300 milliards de dollars depuis le début de l’année. Les investisseurs nourrissent toujours de l’intérêt pour cette classe d’actifs à part entière. Une situation qui plaide curieusement en faveur des technologies décentralisées et autres blockchains. [Lire la suite]

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      Le Centre Pompidou vient d’acquérir un NFT CryptoPunk : mais qu’est-ce que c’est ?

      news.movim.eu / Numerama · Monday, 13 February, 2023 - 11:09

    Le musée Pompidou de Paris, spécialisé dans l'art moderne, vient d'annoncer l'achat de plusieurs œuvres sous forme de NFT. Parmi les pièces acquises, on trouve un CryptoPunk, un NFT spécial qui fait partie de l'une des collections les plus populaires et iconiques du milieu de l'art numérique. Que sont ces drôles de petits personnages ? [Lire la suite]

    Abonnez-vous aux newsletters Numerama pour recevoir l’essentiel de l’actualité https://www.numerama.com/newsletter/

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      Qu’est-ce que la blockchain ?

      news.movim.eu / Numerama · Saturday, 4 February, 2023 - 15:40

    La technologie de la blockchain, sorte de livre de comptes libre d'usage et transparent, permet de faire fonctionner les crypto-monnaies. Mais, elle a aussi d'autres applications au quotidien, de plus en plus nombreuses. [Lire la suite]

    Abonnez-vous aux newsletters Numerama pour recevoir l’essentiel de l’actualité https://www.numerama.com/newsletter/