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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Ripple (XRP) is an independent digital asset that is native to the Ripple Consensus Ledger. With proven governance and the fastest transaction confirmation of its kind, XRP is said to be the most efficient settlement option for financial institutions and liquidity providers seeking global reach, accessibility and fast settlement finality for interbank flows.
Essentially, if you are interested in trading in digital currencies but don't want to get bogged down in the underlying technology, products like Coinbase are a way to begin a foray into a new form of currency speculation and investing. You do, however, lose some of the advantages of trading in a cryptocurrency and through the blockchain. On Coinbase, you have no pseudo anonymity—your name is attached to your Coinbase account and so is your bank account, so transaction history is relatively easy to track down. And if you're not working on the blockchain, there's not much you can do to ensure that the verification of your transaction history or your account is taking place on the blockchain. You are, instead, placing trust in the intermediary, in this case, Coinbase.

The platform stores 98% of customers funds offline to ensure the security of the cryptocurrency assets you purchase and store within Coinbase. On their website, Coinbase assures customers that "sensitive data that would normally reside on our servers is disconnected entirely from the internet." Data is then encrypted, and transferred to USB drives and paper backups, and distributed in safe deposit boxes vaults all over the world. 

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Bitcoin is the world’s first cryptocurrency which works on a completely decentralized network known as the blockchain. The blockchain network consists a link of blocks that are secured using cryptography and record all the transactions. Bitcoin was first presented to the world in 2009 by an anonymous identity known as Satoshi Nakamoto. As Bitcoin works on a decentralized network, it is completely free from the involvement of third-party financial institutions or central banks. The Bitcoin blockchain facilitates instant peer-to-peer transactions at minimum transactions fees required to maintain the network. The total number of Bitcoins is fixed at 21 million with its smallest unit being referred to as Satoshi. Each Satoshi represents a hundred millionth part of Bitcoin which means that 100,000,000 Santoshi = 1 BTC. Additional Bitcoins are generated by a process known as mining. Bitcoins are mined by professional miners solving complex computational equations. For each Bitcoin mined, the miners are rewarded with either more coins or transaction fees. The miners also validate all transactions on the Bitcoin network as well as look after the network security. Bitcoin can be exchanged with fiat currencies or other digital currencies. There are over 100,000 merchants and vendors accepting Bitcoin all over the world.
Bitcoin is the world’s first virtual digital currency underpinned by a completely decentralized blockchain technology also known as the Distributed Ledger Technology (DLT). Bitcoin was first created in 2009 by an anonymous identity of Satoshi Nakamoto. Bitcoin allows for peer-to-peer transactions and is completely free of any third-party involvement like financial institutions or central banks. The Bitcoin’s blockchain network maintains a history of all the transactions made and facilitates instant funds transfer with minimal transaction fees required to cover the cost of network operation. The total supply of Bitcoin is fixed at 21 million coins and its smallest fractional unit is called as Satoshi. Each Satoshi is a hundred millionth of a Bitcoin which means 100,000,000 Santoshi = 1 BTC. Bitcoins are generated by a process known as ‘mining’ which involves solving of complex mathematical algorithms. The miners involved in the mining process look after the Bitcoin network security and validate each transactions taking place on the network. Bitcoin can be exchanged with other digital currencies or fiat currencies. Bitcoin is used as a means of payment by over 100,000 vendors and merchants.

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On 31 March 2008, stimulating another controversy pertaining to Ledger's estate, Gemma Jones and Janet Fife-Yeomans published an "Exclusive" report, in The Daily Telegraph, citing Ledger's uncle Haydn Ledger and other family members, who "believe the late actor may have fathered a secret love child" when he was 17, and stating that "If it is confirmed that Ledger is the girl's biological father, it could split his multi-million dollar estate between ... Matilda Rose ... and his secret love child."[109][110][111] A few days later, reports citing telephone interviews with Ledger's uncles Haydn and Mike Ledger and the family of the other little girl, published in OK! and Us Weekly, "denied" those "claims", with Ledger's uncles and the little girl's mother and stepfather describing them as unfounded "rumors" distorted and exaggerated by the media.[112][113]

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Ledger's death affected the marketing campaign for Christopher Nolan's The Dark Knight (2008)[11][34] and also both the production and marketing of Terry Gilliam's film The Imaginarium of Doctor Parnassus, with both directors intending to celebrate and pay tribute to his work in these films.[34][35][146][147] Although Gilliam temporarily suspended production on the latter film,[35] he expressed determination to "salvage" it, perhaps using computer-generated imagery (CGI), and dedicated it to Ledger.[81][148][149] In February 2008, as a "memorial tribute to the man many have called one of the best actors of his generation," Johnny Depp, Jude Law, and Colin Farrell signed on to take over Ledger's role, becoming multiple incarnations of his character, Tony, transformed in this "magical re-telling of the Faust story".[150][151][152] The three actors donated their fees for the film to Ledger's and Williams's daughter.[153]

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Heath Andrew Ledger[a] (4 April 1979 – 22 January 2008)[1] was an Australian actor and music video director. After performing roles in several Australian television and film productions during the 1990s, Ledger left for the United States in 1998 to further develop his film career. His work comprised nineteen films, including 10 Things I Hate About You (1999), The Patriot (2000), A Knight's Tale (2001), Monster's Ball (2001), Lords of Dogtown (2005), Brokeback Mountain (2005), The Brothers Grimm (2005), Casanova (2005), The Dark Knight (2008), and The Imaginarium of Doctor Parnassus (2009), the latter two being posthumous releases.[2] He also produced and directed music videos and aspired to be a film director.[3]

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The next day, at 10:50 am Australian time, Ledger's parents and sister appeared outside his mother's house in Applecross, a riverside suburb of Perth, and read a short statement to the media expressing their grief and desire for privacy.[120] Within the next few days, memorial tributes were communicated by family members; the Prime Minister of Australia, Kevin Rudd; the Deputy Premier of Western Australia, Eric Ripper; Warner Bros. (distributor of The Dark Knight) and thousands of Ledger's fans around the world.[121][122][123][124]

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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]

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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]

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