For those of you who have not been paying attention to one of the biggest trends in investing and tech, cryptocurrencies are digital currencies using encryption techniques that regulate the generation of currency and verify the transfer of funds, operating independently of a central bank. Units of currency are created through a process referred to as mining.
^ It has been claimed that he was Western Australian junior chess champion, but he is not listed at WA Chess Association past state junior champions. Claims that he was near grandmaster strength are certainly an exaggeration: Australian grandmaster Ian Rogers called the claim "ridiculous" (Tweet by Ian Rogers), while American grandmaster Joel Benjamin noted "People outside the tournament chess community commonly inflate the credentials of casual players" (blog of Joel Benjamin).

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^ Daniel Kreps (29 February 2008). "Footage from Heath Ledger's Nick Drake Video Surfaces". Rolling Stone. Retrieved 18 March 2008. The video, for Drake's posthumously released song 'Black Eyed Dog,' was filmed by the actor in late 2007 and included in a multimedia instalment about Drake called 'A Place to Be.' The project was only screened publicly twice before the actor's death, and the Ledger family said the 'Black Eyed Dog' video would not be released.

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In August 2019, Coinbase announced that it was targeted by a sophisticated hacking attack attempt in mid-June. This reported attack used spear-phishing and social engineering tactics (including sending fake e-mails from compromised email accounts and created a landing page at the University of Cambridge) and two Firefox browser zero-day vulnerabilities. One of the Firefox vulnerabilities could allow an attacker to escalate privileges from JavaScript on a browser page (CVE-2019–11707) and the second one could allow the attacker to escape the browser sandbox and execute code on the host computer (CVE-2019–11708). Coinbase's security team detected and blocked the attack, the network was not compromised, and no cryptocurrency was stolen.[39][40][41]

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Bitcoin (BTC) is a consensus network that enables a new payment system and a completely digital currency. Powered by its users, it is a peer to peer payment network that requires no central authority to operate. On October 31st, 2008, an individual or group of individuals operating under the pseudonym "Satoshi Nakamoto" published the Bitcoin Whitepaper and described it as: "a purely peer-to-peer version of electronic cash, which would allow online payments to be sent directly from one party to another without going through a financial institution."

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Ledger was an avid chess player, playing some tournaments when he was young.[53] As an adult, he often played with other chess enthusiasts at Washington Square Park,[54] though the level of his play has sometimes been exaggerated.[55] Ledger also had a keen interest in the West Coast Eagles, a professional Australian rules football team that competes in the Australian Football League and is based in his hometown of Perth.[56]
Ledger had relationships with actresses Lisa Zane, Heather Graham and Naomi Watts.[57][58] In 2004, he met and began dating actress Michelle Williams on the set of Brokeback Mountain. Their daughter, Matilda Rose, was born on 28 October 2005 in New York City.[59] Matilda's godparents are Brokeback co-star Jake Gyllenhaal and Williams' Dawson's Creek co-star Busy Philipps.[60] In January 2006, Ledger put his residence in Bronte, New South Wales, up for sale,[61] and returned to the United States, where he shared a house with Williams, in Boerum Hill, Brooklyn, from 2005 to 2007.[62] In September 2007, Williams' father confirmed to Sydney's The Daily Telegraph that Ledger and Williams had ended their relationship.[63] After Ledger's death, news outlets reported that his drug abuse had prompted Williams to request that he move out of the apartment they shared in Brooklyn.[64]
In August 2019, Coinbase announced that it was targeted by a sophisticated hacking attack attempt in mid-June. This reported attack used spear-phishing and social engineering tactics (including sending fake e-mails from compromised email accounts and created a landing page at the University of Cambridge) and two Firefox browser zero-day vulnerabilities. One of the Firefox vulnerabilities could allow an attacker to escalate privileges from JavaScript on a browser page (CVE-2019–11707) and the second one could allow the attacker to escape the browser sandbox and execute code on the host computer (CVE-2019–11708). Coinbase's security team detected and blocked the attack, the network was not compromised, and no cryptocurrency was stolen.[39][40][41]
Ledger was born in Perth, Western Australia, the son of Sally Ledger (née Ramshaw), a French teacher, and Kim Ledger, a racing car driver and mining engineer whose family established and owned the Ledger Engineering Foundry.[13] The Sir Frank Ledger Charitable Trust is named after his great-grandfather.[13] He had English, Irish, and Scottish ancestry.[14] Ledger attended Mary's Mount Primary School in Gooseberry Hill,[15] and later Guildford Grammar School, where he had his first acting experiences, starring in a school production as Peter Pan at the age of 13.[6][13] His parents separated when he was 10 and divorced when he was 11.[16] Ledger's older sister Kate, an actress and later a publicist, to whom he was very close, inspired his acting on stage, and his love of Gene Kelly inspired his successful choreography, leading to Guildford Grammar's 60-member team's "first all-boy victory" at the Rock Eisteddfod Challenge.[13][17] Ledger's two half-sisters are Ashleigh Bell (b. 1990), his mother's daughter with her second husband and his stepfather Roger Bell, and Olivia Ledger (b. 1996), his father's daughter with second wife and his stepmother Emma Brown.[18]
^ Boucher, Geoff; Gold, Matea; Lieberman, Paul (23 January 2008). "Ledger's death is a shock to Hollywood, fans". Los Angeles Times. Retrieved 2 April 2009. Minutes after the news of Ledger's death broke, several hundred people gathered outside the Broome Street apartment building where Ledger had been living ... television crews and area residents were joined by fans, including some Brooklyn acting students.

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