Značka: Bitcoin Payments

Subway accepts Bitcoin, so users can get a sandwich on the Lightning Network

No, it’s not Groundhog Day. Subway is accepting Bitcoin (BTC), again — but this time it’s using the fast, nearly free Bitcoin Lightning Network.Kicking off the 7-day #usingbitcoin week with Lunch at Subway, Chausseestrasse in Berlin! 50% off when paying with #bitcoin #spendyourbitcoin pic.twitter.com/f81kdMOnEQ— felix (@felixbillert) October 19, 2022The world’s largest franchise by number of restaurants is trialing Bitcoin payments at three Subways in Germany’s capital, Berlin. Subway first experimented with Bitcoin almost 13 years ago in Moscow, Russia. Over the past few months, Daniel Hinze, the Berlin Subway franchise owner, recorded over 120 Bitcoin transactions. In an interview with Cointelegraph, Hinze explained his desire “to help Bitcoin become money.” “Five years ago, I started to deal with cryptocurrencies; and in the last two years, I have dealt very intensively with the topic of Bitcoin. With that in mind, I’ve decided that [Bitcoin] could be the better money system.”Bitcoin is not a popular means of exchange in Europe, despite the efforts of merchants, retailers and even Lightning-enabled conferences. Hinze has encouraged Bitcoin payments by offering a 10% discount on all footlongs, meatball marinaras and sucookies paid for with BTC. Lunch with #usingbitcoinat Subway in Berlin. Also got 50% off. 😀 pic.twitter.com/yZkZ6osO9D— Rumpel_BTC (@BtcRumpel) October 19, 2022

To kick off the campaign, Hinze offered a 50% discount on all Bitcoin payments for one week: “Around the week, there was, of course, extremely high demand. Our three restaurants were frequently visited by people who liked to pay with Bitcoin.”German-speaking social media was buoyed by Subway buys as the hashtag #usingBitcoin took over. Hinze partnered with Lipa, a Swiss-based Bitcoin company, to enable an easy-to-use point-of-sale solution. Bastien Feder, CEO of Lipa, told Cointelegraph that its mission is to make Bitcoin “basically irresistible to use because Bitcoin is currency.” Lipa kitted out the Subways with merchant devices that allow customers to quickly scan a Lightning-enabled QR code that allows for fast, frictionless, low-cost payments. Lipa charges merchants 1% for the service, as opposed to Visa or Mastercard payment rails, which charge double or more. Feder explained:“It’s 2.5% to 4% depending on the contract from the merchant. If it’s a business card, there’s 0.5% on top of that. […] And if it’s a foreign business credit card, you pay up to 7%, and you don’t know until the end of the month.”The experience of paying over the LN differs greatly from when Subway franchises first accepted Bitcoin payments in 2014. Before the arrival of the LN, customers would have to wait for around for several minutes. Miners would mint the next block on the blockchain, with the transaction confirmed by Bitcoin nodes around the world. The process was inconvenient for retail payments due to the wait time as well as the sometimes high fees. With the LN, customers enjoy faster settlement times than Visa or Mastercard and lower fees thanks to a peer-to-peer network of payments.RACE OF THE RAILS ‍♂️ Bitcoin #Lightning payments vs #fiat contactless payments at the #Gibraltar Bakery. £2.20 loaded up on both PoS. WHO WINS?? ⚡️ ⚡️ ⁦@CoinCorner⁩ ⁦@CoinCornerMolly⁩ pic.twitter.com/b3ezy7FIeq— Joe Nakamoto (@JoeNakamoto) July 25, 2022

Nonetheless, due to the fact that Bitcoin has for most of its history been a speculative vehicle — sparing a few use cases for purchasing — encouraging Bitcoiners to spend BTC can be a challenge.Nonetheless, retail examples are popping up, such as in Berlin or San Salvador. Nicolas Burtey, CEO of Galoy Money, told Cointelegraph that the adoption of Bitcoin in El Salvador was the tipping point for the Lightning Network. He joked that the Bitcoin Law “should have actually been called the Lightning Law!”Related: McDonald’s, pizza and coffee paid in Bitcoin: The Plan B for crypto paymentsLipa and Hinze expect a steady increase in demand for Bitcoin payments. Feder told Cointelegraph that it’s due in large part because of the ”exponentially rising Bitcoin community in Germany, in Switzerland, basically all over the world.”Indeed, the LN is enabling communities keen to trade, from Senegal to Guatemala and Switzerland. Hinze told Cointelegraph that for the moment, the Subway restaurant only accepts the world’s most recognizable currency, as he and his business partners “firmly believe in Bitcoin.”

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Why banking uses at least 56 times more energy than Bitcoin

The next time Bitcoin (BTC) comes under fire for energy consumption, remember this statistic. The banking industry uses at least 56 times more energy. That’s according to cryptographer and founder of Valuechain, Michel Khazzaka: “I’m not saying it uses less or the same, just know it uses 56 times more than Bitcoin.”The statistic, first shared by Michel Khazzaka in the summer, caused a stir in the Bitcoin and wider crypto community. He published his estimates in a Valuechain report, a company he founded to investigate the world of crypto payments. In an exclusive Cointelegraph Crypto Story interview, Khazzaka talks viewers through the extensive research that led to striking conclusions. In short, Bitcoin might not be as bad for the environment as the mainstream media lead people to think.[embedded content]Khazzaka, who describes Bitcoin as “Money with a memory,” sought to refute the claim that Bitcoin is worse for the environment than fiat money. He spent four years toiling away, compiling data and crunching numbers. He built out a model, or estimate, to understand just how much energy the banking industry consumes.Speaking from his home in Paris, Khazzaka told Cointelegraph that he looked at commute times, data centers, servers, and even ATMs for the calculations. He didn’t, however, take into account the energy put into “Banks, buildings or ATMs; to manufacture to bring the metal etc. Let’s compare the operations.” Khazzaka admits this oversight is intentional: “That’s why all my numbers are underestimated for banking and extremely accurate for Bitcoin.”For Bitcoin, Khazzaka concluded that Bitcoin consumes 88.95 TWh per year, considerably less than the Cambridge Centre for Alternative Finance estimates. Nonetheless, Khazzaka admits that Bitcoin uses an “Extraordinary amount of energy.” However, in return users receive:“An extraordinary amount of security, for an extraordinarily important service.”He compares Bitcoin to space travel, explaining that even if people don’t care about going to the moon, it’s a right– “Even it tries to consume more energy than a car.” Related: Bitcoin mining to cost less than 0.5% of global energy if BTC hits $2M: ArcaneFinally, in a nod to the layer-2 Bitcoin Lightning Network, Khazzaka concludes that as a payments network, it shows tremendous promise. It just needs to prove itself.

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McDonald’s, pizza and coffee paid in Bitcoin: The Plan B for crypto payments

Over the weekend, thousands of Bitcoiners and crypto enthusiasts descended on the small, sleepy Swiss town of Lugano. More specifically, they piled onto a McDonald’s restaurant. Perched on Lake Lugano, Mcdonald’s Lugano received countless visits from Bitcoiners keen to trade Satoshis (the smallest denomination of a Bitcoin) for Big Macs, McFlurrys and coffee.But why were European crypto enthusiasts excited to pay in Bitcoin (BTC) at one of the world’s most recognizable brands? Well, firstly to demonstrate the Lightning Network, a Layer-2 technology built atop Bitcoin. But also to live up to Satoshi Nakamoto’s promise that Bitcoin is, in fact, an electronic cash system. McDonald’s order paid with #Bitcoin over the Lightning Network. Went for a Saifedean style order. pic.twitter.com/srIsj9SAfB— ₿ GANDALF (@BTCGandalf) October 27, 2022The entire McDonald’s team had been educated and onboarded onto the Bitcoin network just days before the major European Bitcoin and blockchain conference, the Plan B Forum, Tether chief technology officer Paolo Ardoino told Cointelegraph. The Italian ex-pat gave Cointelegraph an overview of Bitcoin and crypto adoption in Lugano, joking that the hands-on process of educating merchants on how to accept crypto can be time-consuming: “At McDonald’s, we spend like one week because they have a ton of people working there.”Ardoino’s company, Tether, orchestrated a broad plan for the economic capital of Italian-speaking Switzerland to adopt Bitcoin and crypto. What commenced as a plan for citizens to pay their taxes in crypto has morphed into a summer school called Plan B, a conference named the Plan B Forum and crypto merchant adoption — spearheaded by McDonald’s. Cointelegraph investigated Bitcoin and crypto merchant adoption to better understand how countries, regions — or in this case — cities can adopt crypto in a meaningful way. Is it possible, for example, to live on crypto in Lugano?Over 60 merchants accept crypto in Lugano. Source: PlanBArdoino explained that over the past few months, the Plan B team has onboarded over 60 merchants to accept crypto, but growth in merchants and crypto payments is really starting to ramp up:“Basically when we had 30 merchants before reaching 600 hundred [crypto] transactions. And in the last five days ago we had 600 transactions.”The team at Plan B intends to hit 1,000 merchants accepting crypto by Q2 2022. “We have a business team that will run around the city,” Ardoino explained. The team onboards more and more merchants and ensures that Lugano becomes the best place to spend crypto in Europe.Unlike El Salvador’s top-down approach to Bitcoin, in which the president announced Bitcoin as legal tender and there was reportedly little hands-on educational assistance for people on the ground, Plan B has the luxury of a team of onboarding personnel.Indeed, Tether and Plan B have the resources to guide merchants through the crypto onboarding process. Plus, they are able to receive feedback from merchants and update their systems accordingly, Ardoino shared:“But also, the problem is the maintenance. We install [the Point of Sale solutions] and then we have people that periodically check in and say, okay, you have problems, get feedback and so on because you know, otherwise you will never work.”True to form, on the first day of the Plan B conference, the onsite pizzeria cheffed by Mauro, had issues with the payment terminal. The Plan B team soon rectified the situation. At Cointelegraph’s hotel, upon arrival, the receptionist said they would accept crypto payments from the following day. Cointelegraph endured paying in fiat for an entire day, before as promised, the hotel’s PoS solution was put to use.Plan B payment terminal. Source: PlanBAll Plan B merchants accept payments over the colorful payment terminal in LVGA token, Bitcoin Lightning, and Tether (USDT). LVGA is a stablecoin proxy of swiss francs and is available to local residents. Related: Pro-crypto city of Lugano and El Salvador sign economic agreement based on adoptionThe merchant partnership is between GoCrypto, a crypto payments company, and Tether. Curiously, Ardoino told Cointelegraph that so far, not a single merchant has rejected the opportunity to accept crypto. The experience is a stark contrast to crypto merchant adoption in the United Kingdom, for example. Ardoino explained:“If your neighbor has it and he’s starting to get more people walking around any paying, you know, people can get over there their biases. When it comes to money; people are more prone to come over their biases.”Cointelegraph succeeded in living off crypto during their stay in the Swiss city, barring one exception. Not a single pharmacy accepts crypto (yet), so if you are planning on a visit to Lugano, don’t forget your toothbrush.

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Lightning Network releases emergency update after critical bug on LND nodes

An emergency update was released to all Lightning Network’s LND node operators on Nov 1., after a critical bug caused LND nodes to fall out of sync chain. This was the second critical bug experienced by the network in less than a month. According to Lightning Labs, developer of the Bitcoin Lightning Network, some LND nodes stopped syncing due to an issue with the btcd wire parsing library. The hot fix (v.015.4) was released nearly three hours after the break. The release stated:”This is an emergency hot fix release to fix a bug that can cause lnd nodes to be unable to parse certain transactions that have a very large number of witness inputs.”As per the issue on GitHub, non-updated nodes will be vulnerable to malicious channel closings once channel timelocks expire in two weeks. The bug impacted only LND nodes, making the current chain state outdated, although payments transactions were still available. Some versions of electrs were also impacted, according to another issue on GitHub. The bug was triggered by a developer dubbed Burak on Twitter, with a message in the transaction saying: “you’ll run cln. and you’ll be happy.” Sometimes to find the light, we must first touch the darkness.https://t.co/dhCwF0DxpE— Burak (@brqgoo) November 1, 2022Burak was also responsible for triggering a similar bug on Oct. 9, when they created a 998-of-999 multisig transaction that was rejected by btcd and LND nodes, leading to the rejection of the whole block and all blocks following the transaction. On the same day, Lightning Labs released a patch to fix the issue.I just did a 998-of-999 tapscript multisig, and it only cost $4.90 in transaction fees.https://t.co/CvBHaRAqPu— Burak (@brqgoo) October 9, 2022

Related: What is the Lightning Network in Bitcoin, and how does it work?On Twitter, users suggested that it was time for an LND bug bounty program:Savage takedown of LND lightning nodes by exploiting a consensus discrepancy between Bitcoin Core and btcd with a single Bitcoin transaction.Encoded message: “you’ll run cln. and you’ll be happy.”Probably not a “responsible disclosure”. Time for an LND bug bounty program? https://t.co/sLZQIsS4Zt pic.twitter.com/S8HwKXdoip— Stadicus (@Stadicus3000) November 1, 2022

Hacker Anthony Towns also claimed to have disclosed the vulnerability to LND developers two weeks ago, noting that “The btcd repo doesn’t seem to have a reporting policy for security bugs, so not sure if anyone else working on btcd found out about it.”The Lightning Network is a second layer added to Bitcoin’s (BTC) blockchain that allows off-chain transactions, i.e. transactions between parties not on the blockchain network.

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