With the largest variety of markets and the biggest value - having reached a peak of 18 billion USD - Bitcoin is here to stay. As with any new invention, there can be improvements or flaws in the initial model however the community and a team of dedicated developers are pushing to overcome any obstacle they come across. It is also the most traded cryptocurrency and one of the main entry points for all the other cryptocurrencies. The price is as unstable as always and it can go up or down by 10%-20% in a single day.

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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.


Peer to peer (P2P) electronic cash is simply described as online money sent from one person to another without the need for a trusted third-party. As described in the original Bitcoin whitepaper by Satoshi Nakamoto, P2P cash makes use of digital signatures as part of the solution, but the main benefits are lost if a trusted third party is still required to prevent fraud. This makes P2P cash a trustless and safe way to transact without the need of intermediaries.

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第二次矛盾,当萨利姆和贾马尔被诱拐到了马曼所开的“孤儿院”时,萨利姆凭借自己的勇敢和聪慧,成为了孩子王,也同时被马曼看上,选择为他自己的爪牙。在萨利姆把一群流浪儿管理得服服帖帖的时候,他与广大的孤儿产生了不可避免的矛盾,而与贾马尔的矛盾也是必然的。编剧在设计他们之间的矛盾时,使用了拉提卡,把她放到了矛盾的冲突点和制高点上,使拉提卡再一次成为贯穿主线的人物。萨利姆想要把婴儿交给拉提卡带,说:“拉提卡,今天你负责带他”,拉提卡说:“我不带”,这时候,萨利姆的权威受到了质疑,作为一个小头头,他一定要让拉提卡服从,于是他说:“抱着吧,这是为你好,有小孩可以要双份。”冲突产生了,萨利姆的命令和拉提卡的意愿产生了矛盾,这时出面的,就是既喜欢拉提卡,又是萨利姆弟弟的贾马尔,他在这两人中, 始终保持着微妙的关系。贾马尔说:“她说了不想带。”当时的贾马尔,决对不是萨利姆的对手,而且萨利姆也必须以牺牲弟弟的利益,才能在孩子中树威,所以,他斩钉截铁地说:“你少说话,贾马尔,接着,不然我把他扔了。”这样,迫使拉提卡接受了萨利姆的建议,再一次的争锋中,萨利姆的名利观战胜了兄弟情。

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To keep the block generation time equal to ten minutes on average, both Bitcoin and Bitcoin Cash use an algorithm adjusting the mining difficulty parameter. This algorithm is called the difficulty adjustment algorithm (DAA). Originally, both Bitcoin and Bitcoin Cash used the same difficulty adjustment algorithm, adjusting the mining difficulty parameter every 2016 blocks. Since 1 August 2017, Bitcoin Cash also used an addition to the DAA, called an Emergency Difficulty Adjustment (EDA) algorithm. EDA was used alongside the original DAA and it was designed to decrease the mining difficulty of Bitcoin Cash by 20%, if the time difference between 6 successive blocks was greater than 12 hours.[36]

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The would-be hard fork with an expanded block size limit was described by hardware manufacturer Bitmain in June 2017 as a "contingency plan" should the bitcoin community decide to fork; the first implementation of the software was proposed under the name Bitcoin ABC at a conference that month. In July 2017, the Bitcoin Cash name was proposed by mining pool ViaBTC. The change, called a fork, took effect on 1 August 2017. As a result, the bitcoin ledger called the blockchain and the cryptocurrency split in two.[16]

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There are two factions of bitcoin supporters, that support large blocks or small blocks.[20] The Bitcoin Cash faction favors the use of its currency as a medium of exchange for commerce while the Bitcoin-supporting faction view bitcoin's primary use as that of a store of value.[20] Some Bitcoin supporters like to call Bitcoin Cash “Bcash,” “Btrash,” or simply a scam, while Bitcoin Cash advocates insist that their implementation is the pure form of Bitcoin.[20]

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在古代,加密是由许多办法完成的。在中国较“流行”使用淀粉水在纸上写字,再浸泡在碘水中使字浮现出来。而外国就不同了,最经典的莫过于伯罗奔尼撒战争。公元前405年,雅典和斯巴达之间的伯罗奔尼撒战争已进入尾声。斯巴达军队逐渐占据了优势地位,准备对雅典发动最后一击。这时,原来站在斯巴达一边的波斯帝国突然改变态度,停止了对斯巴达的援助,意图是使雅典和斯巴达在持续的战争中两败俱伤,以便从中渔利。在这种情况下,斯巴达急需摸清波斯帝国的具体行动计划,以便采取新的战略方针。正在这时,斯巴达军队捕获了一名从波斯帝国回雅典送信的雅典信使。斯巴达士兵仔细搜查这名信使,可搜查了好大一阵,除了从他身上搜出一条布满杂乱无章的希腊字母的普通腰带外,别无他获。情报究竟藏在什么地方呢?斯巴达军队统帅莱桑德把注意力集中到了那条腰带上,情报一定就在那些杂乱的字母之中。他反复琢磨研究这些天书似的文字,把腰带上的字母用各种方法重新排列组合,怎么也解不出来。最后,莱桑德失去了信心,他一边摆弄着那条腰带,一边思考着弄到情报的其他途径。当他无意中把腰带呈螺旋形缠绕在手中的剑鞘上时,奇迹出现了。原来腰带上那些杂乱无章的字母,竟组成了一段文字。这便是雅典间谍送回的一份情报,它告诉雅典,波斯军队准备在斯巴达军队发起最后攻击时,突然对斯巴达军队进行袭击。斯巴达军队根据这份情报马上改变了作战计划,先以迅雷不及掩耳之势攻击毫无防备的波斯军队,并一举将它击溃,解除了后顾之忧。随后,斯巴达军队回师征伐雅典,终于取得了战争的最后胜利。

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To keep the block generation time equal to ten minutes on average, both Bitcoin and Bitcoin Cash use an algorithm adjusting the mining difficulty parameter. This algorithm is called the difficulty adjustment algorithm (DAA). Originally, both Bitcoin and Bitcoin Cash used the same difficulty adjustment algorithm, adjusting the mining difficulty parameter every 2016 blocks. Since 1 August 2017, Bitcoin Cash also used an addition to the DAA, called an Emergency Difficulty Adjustment (EDA) algorithm. EDA was used alongside the original DAA and it was designed to decrease the mining difficulty of Bitcoin Cash by 20%, if the time difference between 6 successive blocks was greater than 12 hours.[36]

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Bitcoin (BTC) is the world’s first decentralized digital currency and payment system and is by far the most known and valuable cryptocurrency. It was created in 2009 by an anonymous person or group called Satoshi Nakamoto. Bitcoin enables transactions to be sent peer-to-peer without passing through a central authority. The transactions are recorded on a decentralized public ledger called the blockchain and each payment acquires a small transaction fee to cover the cost of the network. The total supply of Bitcoin is 21 million and it’s smallest unit of bitcoin is called a Satoshi, it’s a hundred millionth of a bitcoin – 0.00000001 BTC. The creation of Bitcoin’s is happening through mining. Miners have the task to validate transactions and keep the network secure. Their efforts are rewarded by new minted Bitcoins and transactions fees. Bitcoin can be exchanged for fiat or other cryptocurrencies, products and services. Over 100,000 merchants and vendors accepts bitcoin as a payment.

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Peer to peer (P2P) electronic cash is simply described as online money sent from one person to another without the need for a trusted third-party. As described in the original Bitcoin whitepaper by Satoshi Nakamoto, P2P cash makes use of digital signatures as part of the solution, but the main benefits are lost if a trusted third party is still required to prevent fraud. This makes P2P cash a trustless and safe way to transact without the need of intermediaries.

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  MD5还广泛用于操作系统的登陆认证上,如Unix、各类BSD系统登录密码、数字签名等诸多方。如在UNIX系统中用户的密码是以MD5(或其它类似的算法)经Hash运算后存储在文件系统中。当用户登录的时候,系统把用户输入的密码进行MD5 Hash运算,然后再去和保存在文件系统中的MD5值进行比较,进而确定输入的密码是否正确。通过这样的步骤,系统在并不知道用户密码的明码的情况下就可以确定用户登录系统的合法性。这可以避免用户的密码被具有系统管理员权限的用户知道。MD5将任意长度的“字节串”映射为一个128bit的大整数,并且是通过该128bit反推原始字符串是困难的,换句话说就是,即使你看到源程序和算法描述,也无法将一个MD5的值变换回原始的字符串,从数学原理上说,是因为原始的字符串有无穷多个,这有点象不存在反函数的数学函数。所以,要遇到了md5密码的问题,比较好的办法是:你可以用这个系统中的md5()函数重新设一个密码,如admin,把生成的一串密码的Hash值覆盖原来的Hash值就行了。

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第二次矛盾,当萨利姆和贾马尔被诱拐到了马曼所开的“孤儿院”时,萨利姆凭借自己的勇敢和聪慧,成为了孩子王,也同时被马曼看上,选择为他自己的爪牙。在萨利姆把一群流浪儿管理得服服帖帖的时候,他与广大的孤儿产生了不可避免的矛盾,而与贾马尔的矛盾也是必然的。编剧在设计他们之间的矛盾时,使用了拉提卡,把她放到了矛盾的冲突点和制高点上,使拉提卡再一次成为贯穿主线的人物。萨利姆想要把婴儿交给拉提卡带,说:“拉提卡,今天你负责带他”,拉提卡说:“我不带”,这时候,萨利姆的权威受到了质疑,作为一个小头头,他一定要让拉提卡服从,于是他说:“抱着吧,这是为你好,有小孩可以要双份。”冲突产生了,萨利姆的命令和拉提卡的意愿产生了矛盾,这时出面的,就是既喜欢拉提卡,又是萨利姆弟弟的贾马尔,他在这两人中, 始终保持着微妙的关系。贾马尔说:“她说了不想带。”当时的贾马尔,决对不是萨利姆的对手,而且萨利姆也必须以牺牲弟弟的利益,才能在孩子中树威,所以,他斩钉截铁地说:“你少说话,贾马尔,接着,不然我把他扔了。”这样,迫使拉提卡接受了萨利姆的建议,再一次的争锋中,萨利姆的名利观战胜了兄弟情。 

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第二次矛盾,当萨利姆和贾马尔被诱拐到了马曼所开的“孤儿院”时,萨利姆凭借自己的勇敢和聪慧,成为了孩子王,也同时被马曼看上,选择为他自己的爪牙。在萨利姆把一群流浪儿管理得服服帖帖的时候,他与广大的孤儿产生了不可避免的矛盾,而与贾马尔的矛盾也是必然的。编剧在设计他们之间的矛盾时,使用了拉提卡,把她放到了矛盾的冲突点和制高点上,使拉提卡再一次成为贯穿主线的人物。萨利姆想要把婴儿交给拉提卡带,说:“拉提卡,今天你负责带他”,拉提卡说:“我不带”,这时候,萨利姆的权威受到了质疑,作为一个小头头,他一定要让拉提卡服从,于是他说:“抱着吧,这是为你好,有小孩可以要双份。”冲突产生了,萨利姆的命令和拉提卡的意愿产生了矛盾,这时出面的,就是既喜欢拉提卡,又是萨利姆弟弟的贾马尔,他在这两人中, 始终保持着微妙的关系。贾马尔说:“她说了不想带。”当时的贾马尔,决对不是萨利姆的对手,而且萨利姆也必须以牺牲弟弟的利益,才能在孩子中树威,所以,他斩钉截铁地说:“你少说话,贾马尔,接着,不然我把他扔了。”这样,迫使拉提卡接受了萨利姆的建议,再一次的争锋中,萨利姆的名利观战胜了兄弟情。

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As a merchant one of your main goals is to be able to accept and process payments as quickly and seamlessly as possible so you can make your customers happy and receive payments without any headaches. Bitcoin Cash is the solution, as it has fast and low-cost transactions. As the world goes digital, electronic currencies such as Bitcoin are becoming the go-to method for paying online and in retail shops. Easily accept Bitcoin Cash directly or use third-party providers to accept Bitcoin Cash using their platforms and convert all or part of the sale into local fiat currency.

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Bitcoin Cash (BCH) is hard fork (a community-activated update to the protocol or code) of Bitcoin that took effect on August 1st, 2017 that increased the block size to 8MB, to help the scale the underlying technology of Bitcoin.Nov 16th 2018: BCH was hard forked again and split into Bitcoin SV and Bitcoin ABC. Bitcoin ABC became the dominant chain and took over the BCH ticker as it had more hashpower and majority of the nodes in the network.

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With the largest variety of markets and the biggest value - having reached a peak of 18 billion USD - Bitcoin is here to stay. As with any new invention, there can be improvements or flaws in the initial model however the community and a team of dedicated developers are pushing to overcome any obstacle they come across. It is also the most traded cryptocurrency and one of the main entry points for all the other cryptocurrencies. The price is as unstable as always and it can go up or down by 10%-20% in a single day.

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Peer to peer (P2P) electronic cash is simply described as online money sent from one person to another without the need for a trusted third-party. As described in the original Bitcoin whitepaper by Satoshi Nakamoto, P2P cash makes use of digital signatures as part of the solution, but the main benefits are lost if a trusted third party is still required to prevent fraud. This makes P2P cash a trustless and safe way to transact without the need of intermediaries.

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Rising fees on the Bitcoin network contributed to a push by some in the community to create a hard fork to increase the blocksize.[11] This push came to a head in July 2017 when some members of the bitcoin community including Roger Ver felt that adopting BIP 91 without increasing the block-size limit favored people who wanted to treat bitcoin as a digital investment rather than as a transactional currency.[12][13] This push by some to increase the block size met a resistance. Since its inception up to July 2017, Bitcoin users had maintained a common set of rules for the cryptocurrency.[12] Eventually, a group of bitcoin activists,[14] investors, entrepreneurs, developers[12] and largely China-based miners were unhappy with Bitcoin's proposed SegWit improvement plans meant to increase capacity and pushed forward alternative plans for a split which created Bitcoin Cash.[15] The proposed split included a plan to increase the number of transactions its ledger can process by increasing the block size limit to eight megabytes.[12][13]

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在这一段中,萨利姆成为了真正的萨利姆。看着电视里的贾马尔,萨利姆心中是感动,是懊悔,是骄傲,他虽然嘴上说“他是个疯子”,但实际上对能有这样一个灵魂圣洁的弟弟,他发自内心的骄傲。他让拉提卡走,他知道那意味着什么,导演特意给了打电话的贾维德一个特写,表明了萨拉姆内心的挣扎和害怕,他知道那意味着死亡。但作为一个男子汉,他从来都是说一不二的,他说“他那儿我来摆平”,同样是气势如虹,萨拉姆做事从不需要解释,他不希望弟弟担心,于是,他说:“你别无选择”,的确,拉提卡的每一次选择实际上都是萨拉姆替她做的,无论是好的,或是坏的,他这句话的潜台词,分明是在托付拉提卡,好好照顾贾马尔,他是我唯一的弟弟。“原谅我所做的一切”,既是对拉提卡说,也是对远处的弟弟贾马尔说的,那一句话里,包含的是兄长对弟弟的爱,是父亲对儿子的爱,是长辈对晚辈的爱,是对自己血脉另一部分的爱,他让拉提卡好好活着,也正是让贾马尔好好活着。当他躺在装满钞票的浴缸里时,他生平的两个愿望都得到了实现:第一,他想成为百万富翁,他此刻拥有了钞票,他温柔地触摸着它们;第二,他想要成为弟弟的保护神,他要弟弟过的好,看到他和拉提卡能够团聚,这个愿望也实现了,他的人生得到了升华,他的完美旅程结束了。

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