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Qu’est-ce que le halving du bitcoin, et à quelle date a-t-il lieu ?

✇Numerama.com - Magazine
Par : Aurore Gayte
15 avril 2024 à 08:49

Tous les quatre ans a lieu un événement que les mineurs et les adeptes de bitcoin attendent : le halving. Protocole inscrit dans le code du bitcoin, il détermine en grande partie le futur de la cryptomonnaie - et participe à la fluctuation des prix. Le prochain halving va avoir lieu dans quelques jours.

Comment sécuriser simplement son portefeuille bitcoin

✇Numerama.com - Magazine
Par : Bogdan Bodnar
5 mars 2024 à 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.

Le bitcoin vient de battre son record absolu

✇Numerama.com - Magazine
Par : Aurore Gayte
5 mars 2024 à 15:08

Le bitcoin, la plus célèbre des crypto-monnaies, a atteint une nouvelle valeur record, ce 5 mars 2023, dépassant très brièvement les 69 000 dollars. Un moment marquant, après plusieurs années de marasme économique, pour le crypto-actif dopé à l'engouement spéculatif de toute une industrie qui attendait son retour en force.

Ce que cache le nouveau prix record du bitcoin

✇Numerama.com - Magazine
Par : Aurore Gayte
6 mars 2024 à 18:01

Le bitcoin a atteint de nouveaux sommets, mais a chuté abruptement de 10 000 dollars immédiatement après. Cette énorme fluctuation du prix après le record est la preuve que le bitcoin est dans une bulle spéculative, selon la journaliste Nastasia Hadjadji, spécialisée dans les crypto-monnaies.

Binance lance un « parfum crypto » uniquement pour les femmes

✇Numerama.com - Magazine
Par : Aurore Gayte
7 mars 2024 à 13:12

Binance a lancé un parfum afin de « convaincre » les femmes de se lancer dans les crypto-monnaies. L'initiative, qui pourrait prêter à sourire, pose pourtant bien des questions d'un point de vue marketing, mais aussi féministe.

Binance Executives Were Arrested In Nigeria For Allegedly Destabilizing Its Currency

✇Slashdot
Par : BeauHD
13 mars 2024 à 01:25
Two top executives from the crypto exchange Binance have been arrested in Nigeria for allegedly destabilizing the national currency. Quartz reports: According to a Wall Street Journal report, Tigran Gambaryan, head of financial-crime compliance at Binance who previously worked at the U.S. Internal Revenue Service (IRS), and Nadeem Anjarwalla, a British-Kenyan national and Binance's regional manager for Africa, have been held against their will for the past two weeks in the country. As per reports, Nigerian government officials invited Binance executives to discuss an ongoing dispute about the world's largest crypto exchange allegedly driving down the value of their national currency. Gambaryan and Anjarwalla arrived in Nigeria on February 25th; after their meeting with government officials, both were taken to their hotels. Later, they were instructed to pack their belongings and move to a guesthouse run by Nigeria's National Security Agency, as stated by their families, per reports. The Nigerian government has accused Binance of exacerbating the country's foreign exchange challenges through rate manipulation for profit. The authorities have also accused the crypto exchange of illegal operations and have restricted access to the company's website. There are also reports that Nigeria sought a $10 billion penalty from Binance for processing around $26 billion in untraceable funds in the country. [...] The reason why and how Nigeria's economic crisis is linked with Binance is yet to be found out. Binance is hoping to resolve the matter soon, according to CoinDesk. The report notes that Nigeria is experiencing its worst economic crisis in recent years due to inflation and the devaluation of their currency, the naira.

Read more of this story at Slashdot.

Bitcoin Fog Crypto Mixer Found Guilty of Money Laundering, Jury Finds

✇Slashdot
Par : BeauHD
13 mars 2024 à 22:40
Roman Sterlingov, the founder of a $400 million crypto-mixing service called Bitcoin Fog, has been convicted of money laundering in a United State District Court on Tuesday. Other charges include money laundering conspiracy, operating an unlicensed money-transmitting business, and violations of the D.C. Money Transmitters Act. CoinTelegraph reports: Sterlingov, however, had argued throughout the trial that he was only a user of the service, and not its operator. His attorney, Tok Ekeland said in a March 12 X post that his team will appeal the verdict. According to evidence presented at the trial, Sterlingov operated Bitcoin Fog from October 2011 to April 2021, which acted as a money laundering service for "criminals seeking to hide their illicit proceeds from law enforcement." The service moved over 1.2 million Bitcoin over the decade-long operation -- worth $400 million at the time of the transactions -- with the bulk of cryptocurrency coming from darknet marketplaces tied to narcotics, computer fraud abuse and identity theft, the government said. Bitcoin Fog also served distributors of child sexual abuse material. Evidence used to convict Sterlingov found that the "vast majority" of crypto deposited to his crypto exchange accounts came from "Bitcoin clusters" associated with Bitcoin Fog. "Evidence presented at trial clearly showed that the defendant laundered hundreds of millions of illicit funds from the dark web through Bitcoin Fog in an attempt to conceal the origin of those funds," said Internal Revenue Service (IRS) Criminal Investigation Chief Jim Lee.

Read more of this story at Slashdot.

Craig Wright Is Not Bitcoin Creator Satoshi Nakamoto, Judge Declares

✇Slashdot
Par : msmash
14 mars 2024 à 14:41
A judge in the UK High Court has declared that Australian computer scientist Craig Wright is not Satoshi Nakamoto, the creator of Bitcoin, marking the end of a years-long debate. From a report: "The evidence is overwhelming," said Honourable Mr. Justice James Mellor, delivering a surprise ruling at the close of the trial. "Dr. Wright is not the author of the Bitcoin white paper. Dr. Wright is not the person that operated under the pseudonym Satoshi Nakamoto. Dr. Wright is not the person that created the Bitcoin system. Nor is Dr. Wright the author of the Bitcoin software," he said. The ruling brings to a close a six-week trial, in which the Crypto Open Patent Alliance, a nonprofit consortium of crypto companies, asked the court to declare that Wright is not Satoshi on the basis that he had allegedly fabricated his evidence and contorted his story repeatedly as new inconsistencies came to light. "After all the evidence in this remarkable trial, it is clear beyond doubt that Craig Wright is not Satoshi Nakamoto," claimed Jonathan Hough, legal counsel for COPA, as he began his closing submissions on Tuesday. "Wright has lied, and lied, and lied."

Read more of this story at Slashdot.

Pourquoi certains bitcoins sont plus rares que d’autres ?

✇Numerama.com - Magazine
Par : Martin Lapouille
14 mars 2024 à 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 ?

Woman With $2.5 Billion In Bitcoin Convicted of Money Laundering

✇Slashdot
Par : BeauHD
21 mars 2024 à 01:01
mrspoonsi shares a report from the BBC: A former takeaway worker found with Bitcoin worth more than $2.5 billion has been convicted at Southwark Crown Court of a crime linked to money laundering. Jian Wen, 42, from Hendon in north London, was involved in converting the currency into assets including multi-million-pound houses and jewelry. On Monday she was convicted of entering into or becoming concerned in a money laundering arrangement. The Met said the seizure is the largest of its kind in the UK. Although Wen was living in a flat above a Chinese restaurant in Leeds when she became involved in the criminal activity, her new lifestyle saw her move into a six-bedroom house in north London in 2017 which was rented for more than $21,000 per month. She posed as an employee of an international jewelry business and moved her son to the UK to attend private school, the Crown Prosecution Service (CPS) said. That same year, Wen tried to buy a string of expensive houses in London, but struggled to pass money-laundering checks and her claims she had earned millions legitimately mining Bitcoin were not believed. She later travelled abroad, buying jewelry worth tens of thousands of pounds in Zurich, and purchasing properties in Dubai in 2019. Another suspect is thought to be behind the fraud but they remain at large. The Met said it carried out a large scale investigation as part of the case - searching several addresses, reviewing 48 electronic devices, and examining thousands of digital files including many which were translated from Mandarin. The CPS has obtained a freezing order from the High Court, while it carries out a civil recovery investigation that could lead to the forfeiture of the Bitcoin. The value of the Bitcoin was worth around $2.5 billion at the time of initial estimates -- but due to the fluctuation in the currency's value, it has since increased to around $4.3 billion.

Read more of this story at Slashdot.

Les prévisions pour le halving 2024 du bitcoin ont changé

✇Numerama.com - Magazine
Par : Aurore Gayte
22 mars 2024 à 14:44

Le prochain halving du bitcoin doit avoir lieu en avril 2024. Mais, selon une étude de Coinbase, cette fois-ci le halving pourrait avoir des effets limités sur le prix du bitcoin. Il vient déjà de connaître une forte hausse et reste pénalisé par des taux directeurs très hauts.

Bitcoin 'Halving' Spurs Exodus of Old US Mining Computers Abroad

✇Slashdot
Par : msmash
25 mars 2024 à 18:41
An anonymous reader shares a report: About 6,000 older Bitcoin mining machines in the US will soon be idled and sent to a warehouse in Colorado Springs where they'll be refreshed and resold to buyers overseas looking to profit from mining in lower-cost environs. Wholesaler SunnySide Digital operates the 35,000 square-foot facility taking in the equipment from a mining client. The outdated machines are among several hundred-thousand it expects to receive and refurbish around a major quadrennial update in the Bitcoin blockchain. Known as the halving, the late April event will slash the reward that's the main revenue stream for miners, who will try to lessen the impact by upgrading to the latest and most efficient technology. With electricity the biggest expense, mining companies including publicly traded giants Marathon Digital Holdings and Riot Platforms need to lower usage costs to maintain a positive margin. Their older computers may still bring a profit, just not likely in the US. Some 600,000 S19 series computers, which account for a majority of machines currently in use, are moving out of the US mostly to Africa and South America, according to an estimate by Ethan Vera, chief operating officer at crypto-mining services and logistics provider Luxor Technology in Seattle. In Bitcoin mining, specialized machines are used to validate transactions on the blockchain and earn operators a fixed token reward. Anonymous Bitcoin creator Satoshi Nakamoto baked in the once-every-four-years halving to maintain the hard cap of 21 million tokens. Next month's event is the fourth since 2012 and the reward will drop to 3.125 Bitcoin from 6.25 now.

Read more of this story at Slashdot.

FTX To Sell $884 Million of Anthropic Shares To Two Dozen Institutional Investors

✇Slashdot
Par : BeauHD
25 mars 2024 à 22:40
The FTX bankruptcy estate has raised $884 million by selling the majority of its Anthropic shares to two dozen institutional investors. "The sale of the Anthropic shares is a big win for the FTX estate, which pledged in January to pay back the defunct exchange's customers 100% of the value of their holdings at the time of the exchange's collapse," reports CoinDesk. "FTX's FTT token climbed 10% on the news." From the report: According to Friday court filings, the top buyer is ATIC Third International Investment Company, a tech investment company wholly owned by the government of Abu Dhabi's sovereign wealth fund, Mubadala. ATIC has agreed to purchase 16,664,167 shares of Anthropic from FTX for $500 million. Other buyers include Jane Street Global Trading -- an affiliate of the erstwhile employer of former FTX CEO Sam Bankman-Fried -- "certain funds" tied to Fidelity Investments and The Ford Foundation.

Read more of this story at Slashdot.

Binance Executive Detained In Nigeria Escapes Custody

✇Slashdot
Par : BeauHD
26 mars 2024 à 01:25
A top executive from the crypto exchange Binance has escaped custody in Nigeria after being arrested for allegedly destabilizing the country's national currency. The Associated Press reports: Nadeem Anjarwalla, the regional manager for Binance in Africa, "fled Nigeria using a smuggled passport," the office of Nigeria's National Security Adviser said in a statement, calling for "whatever information that can assist law enforcement agencies to apprehend the suspect." Anjarwalla, who holds dual British and Kenyan citizenship, had been detained in Nigeria along with another colleague since Feb. 26 when they arrived in the country following a crackdown on the crypto platform. Tigran Gambaryan, the colleague who is an American citizen, remains in captivity. Nigeria is Africa's largest crypto economy in terms of trade volume with many citizens using crypto to hedge their finances against surging inflation and the declining local currency. Binance stopped all trading with the Nigerian naira currency on its platform in early March after authorities accused it of being used for money laundering and terrorism financing -- without providing evidence publicly. It was not clear how Anjarwalla fled custody. The Abuja-based Premium Times newspaper, which broke the news of his escape, reported that he fled from a guest house in the capital city after guards led him to a nearby mosque for prayers. "The personnel responsible for the custody of the suspect have been arrested, and a thorough investigation is ongoing to unravel the circumstances that led to his escape from lawful detention," Zakari Mijinyawa, spokesman for the office of Nigeria's National Security Adviser said in a statement.

Read more of this story at Slashdot.

Crypto Miner, Pennsylvania Hit With Lawsuit Over Pollution From Bitcoin Mine

✇Slashdot
Par : BeauHD
27 mars 2024 à 03:30
An anonymous reader quotes a report from Reuters: An environmental community group on Tuesday sued Stronghold Digital Mining claiming the company's bitcoin mine in northeastern Pennsylvania that burns waste coal and old tires for energy is polluting nearby communities with dangerous chemicals. The lawsuit by Save Carbon County filed in state court in Philadelphia, also names Pennsylvania as a defendant. The group, a nonprofit whose members live near the bitcoin mine, is seeking compensatory and punitive damages from the company, and an order directing the state to stop allowing the pollution to continue. The group said Stronghold has created a public and private nuisance by releasing mercury into waterways and spewing harmful chemicals like sulfur dioxide into the air from an aging power plant it bought to power its energy-thirsty operations. The state has issued permits allowing the pollution and subsidized the crypto-mine through tax incentives despite having an affirmative duty in the state constitution to protect the environment for its citizens, according to the lawsuit. A Stronghold spokesperson said in a statement that its operations actually clean up land and water in the area by using waste coal left behind by historic coal production in the region. "Stronghold's facilities have cleaned up millions of tons of waste coal and reclaimed over 1,050 acres of once-blighted land, now sports fields, parks, and fishing spots for local communities," the spokesperson said.

Read more of this story at Slashdot.

Texan Bitcoiners Start Mining In Argentina Using Flared Excess Gas

✇Slashdot
Par : BeauHD
27 mars 2024 à 21:20
Two Texas-based bitcoin miners have turned to the foothills of the Andes mountains in Argentina to mine bitcoin using flared natural gas. CNBC reports: Brent Whitehead and Matt Lohstroh, both graduates of Texas A&M University, have been mining bitcoin on the oil fields of East Texas since 2019. That's when they founded Giga Energy with the goal of taking flared natural gas and turning it into electricity to run bitcoin mines, which are notoriously power-thirsty. On Tuesday, Giga announced its first foray into Argentina, following expansion across the U.S. and into Shanghai. The company is partnering with Phoenix Global Resources, an oil and gas company with operations in Mendoza, and with IT services company Exa Tech to launch a two megawatt bitcoin mine on top of Vaca Muerta. Giga's system involves placing a shipping container full of thousands of bitcoin miners on an oil well, then diverting the natural gas into generators, which convert the gas into electricity that's used to power the miners. The process reduces CO2-equivalent emissions by about 63% compared to continued flaring -- or burning -- of unused gas, according to research from Denver-based Crusoe Energy Systems. It also turns wasted energy into a valuable asset for oil producers. On the small pilot site in Argentina, Exa Tech is handling operations on the ground, Phoenix Global is providing the gas and Giga is supplying the equipment. [...] Lohstroh told CNBC that Giga has generated over $10 million in revenue so far this quarter. It's not the only miner that sees opportunity in Argentina, which ranks 12th on the list of the top global emitters of methane, according to World Bank data. Giga's mine is intentionally small to start and isn't intended to be profitable yet. The company first wants to make sure it can successfully import all the necessary equipment before scaling the operation. The mine has been running a test since December, and Lohstroh estimates the site has mined in the range of $200,000 to $250,000 worth of bitcoin. Giga projects the mine is set to reduce CO2 emissions by approximately 30,000 tons per year at the upstream facility. The site is also designed to sell any excess power to the Argentina grid as a way to both generate revenue and curb operational redundancies.

Read more of this story at Slashdot.

US, UK Investigate $20 Billion of Crypto Transfers To Garantex Russian Exchange

✇Slashdot
Par : BeauHD
28 mars 2024 à 22:20
According to Bloomberg, the U.S. and U.K. are investigating more than $20 billion worth of USDT transactions that have passed through Garantex, a Russia-based crypto exchange. Milk Road reports: If confirmed, the $20 billion in transactions would represent one of the most significant breaches of the sanctions imposed on Russia since the conflict began. However, the sources cautioned that the inquiries are ongoing and that it is too early to draw conclusions given the complexity of crypto transactions. They also noted that there was no immediate suggestion of wrongdoing by Tether. Key points: - The transactions under scrutiny were conducted using Tether (USDT). - The US and UK sanctioned Garantex on suspicion of facilitating financial crimes and illicit transactions in Russia. - The $20 billion USDT transactions would represent one of the biggest breaches of sanctions imposed on Russia since the start of the war. - Tether froze assets of entities on the U.S. sanctions list.

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Les jours du bitcoin sont comptés

✇Numerama.com - Magazine
Par : François Remy
29 mars 2024 à 10:21

Les modèles prédictifs d’une nouvelle étude scientifique sont parvenus à dater ce qui serait la « fin du bitcoin », déjà tant de fois annoncée par erreur. Plongée dans ces statistiques diseuses de mauvaise aventure.

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