Source : 交易平台Bitfinex区块链硬分叉货币 摘要：在这篇文章中，我们将看看2017年Bitfinex平台上可能发生的十个不同的区块链分叉货币，以及面临的复杂挑战。在某些情况下，Bitfinex的政策决策是不公平的，令客户造成一定的负担，但这也是无法避免的。 区块链分叉货币概述 Bitfinex区块链分叉货币 – 2017 资料来源：Bitfinex，BitMEX研究 注：仍不知道Bitcoin Unlimited区块链在2017年12月合同到期结算时会不会以一个和比特币不同的区块链形式存在 上图显示了在2017年Bitfinex平台上可能发生的十个区块链分叉货币。在此期间，不同的组织团体实行比特币分拆，Bitfinex为其客户提供交易这些分拆后的加密货币的机会。通常每个分拆可以产生三个新的货币。例如SegWit2x导致了： BT1 – 分叉后可以兑换BTC的期货合约货币 BT2 – 分叉后可以兑换B2X的期货合约货币 B2X – SegWit2x货币本身 正如我们在下面解释的那样，允许所有这些分叉货币交易导致Bitfinex的操作出现问题，这给Bitfinex客户带来了一定的负担，并在有些情况下造成对客户“不太公平”的结果。然而，考虑其复杂性，完全避免这些问题是困难的，也是不太现实的。在许多方面，Bitfinex在迎接这些挑战并支持分叉货币的同时，对加密货币社区做了许多贡献。虽然在某些方面，其行为可能对客户不公平，又或者平台可以更好地处理情况。 下表列出了与十个区块链分叉货币相关事件的完整时间表。 2017年Bitfinex区块链分叉货币时间表 日期 事件 分叉自 分叉后 保证金多头收取分叉货币 保证金空头亏欠分叉货币 比特币贷款方收取分叉货币* 比特币借款方亏钱分叉货币* 18/03/2017 可选择分叉 BTC BCC + BCU n/a n/a n/a n/a 01/08/2017* 直接分发 BTC BCH 06/10/2017 可选择分叉 BTC BT1 + BT2 n/a n/a n/a n/a 23/10/2017 可选择分叉 BTC BG1 + BG2 n/a n/a n/a n/a 24/10/2017 换取 BG1 BTC n/a n/a n/a n/a 24/10/2017 换取 BG2 BTG n/a n/a n/a n/a 24/10/2017 直接分发 BTC BTG 27/10/2017 购回 BTG BTC n/a n/a n/a n/a 16/11/2017* 换取 BT1 BTC n/a n/a n/a n/a 16/11/2017* 换取 BT2 B2X n/a n/a n/a n/a 16/11/2017* 直接分发 BTC B2X XX/12/2017* 直接分发 BTC BTU ? ? ? ? 31/12/2017 换取 BCC BTC n/a n/a n/a n/a 31/12/2017 换取 BCU BTU n/a n/a n/a n/a 资料来源：Bitfinex，BitMEX研究 注： BCH对应的贷款方系数为0.85 16/11/2017是SegWit2x预计硬分叉日期 Bitcoin Unlimited 硬分叉的日期无法预计，因为Bitcoin Unlimited本身与BTC的区别太小，是否发生分叉很难定义，它也很可能不会发生 BTG和B2X直接分发时，只有当BTC“用作融资抵押品”时，贷款方才收到分叉货币 对于上表中的任何不准确之处，我们深表歉意 保证金仓位和融资 正如我们在先前SegWit2x硬分叉文中提到的一样，平台对于加密货币分拆后分发的决策不是那么简单直接的。基本上它们有四种选择： 金融平台关于分配分拆加密货币的政策方案 方案一 方案二 方案三 方案四 Split user Bitcoin deposit balances into BTC & spin-off Split user Bitcoin margin long positions into BTC & spin-off long positions Split user Bitcoin margin short positions into BTC & spin-off short positions Bitcoin lenders are due back BTC & spin-off Bitcoin borrowers owe BTC & spin-off 注：上图有可能不包括所有对于比特币融资和比特币保证金仓位的政策。 BitMEX可能会选择方案一（或在某些情况下可能选择方案二），但是Bitfinex通常会选择方案（或方案的变体）三或四。虽然Bitfinex的政策方案在许多方面被认为是“更公平的”，但可能会导致一些问题。支持额外的加密货币不仅可能为交易平台带来额外的负担，也可能为客户带来额外的负担，像 Bitcoin Gold如下所示。 比特币黄金（BTG） – 强制回购 Bitfinex客户若在硬分叉发生时，使用杠杆卖空BTC，那该仓位在硬分叉后就产生了需要偿还BTG债务的责任。这一点的作用在于平衡用户在硬分叉发生时利用杠杆买入BTC后会得到BTG的仓位。 这对于卖空的客户造成了负担，因为他们现在必须进入市场并购买BTG才能覆盖他们的仓位，尽管他们对BTG没有兴趣或不太熟悉。这可能会使某些客户感到沮丧，因为在这种特殊情况下并没有提前收到通知（可能不到24小时内）。由于保证金交易在BTG上不一定会启用，客户仅得到三天的时间来覆盖他们的BTG债务，或者Bitfinex会用他们抵押BTC在市场上购买BTG来覆盖其BTG债务。 任何人在分叉时作为BTC借款方而造成的负余额的都需要在3天之内回购BTG，否则就会冒着系统帮他们自动回购BTG的风险 资料来源：Bitfinex Bitfinex客户可能特别关心此问题，因为到时候BTG加密货币可能仍未存在，客户也不准备卖出，BTG也可能需要进一步的开发工作。Bitfinex允许交易的日期是10月24日，这只是记录比特币的数量及持有账户的“拍照日”，而不是具体发出BTG的日期。因此，在“拍照日”卖空BTC的Bitfinex客户将无法将BTG存入平台以覆盖其空头头寸，因为该加密货币尚不存在，然而他们被迫在Bitfinex的平台买入BTG。BTG的流动性可能不足，这可能会导致问题。 虽然这“不太公平”，也可能会另一些客户沮丧，但批评他们容易，毕竟十全十美的政策方案是不存在的。 区块链分叉的加密货币是不会考虑其对其他区块链分叉的加密货币的影响的 上述约定并不能完美的相互对应。例如，8月份BTC的持有人获得分配了BCH。但是，BCC的持有人从未收到BCH。上述图表中合同的重叠性质说明了这个问题。 如果Bitfinex想要进一步增加上述的复杂性，可以进行以下额外分配方案： 当SegWit2x硬分叉发生时，将BTG分配给BT1的持有人 2017年12月31日，Bitcoin Unlimited合同结算日期，向BCC持有人分配BCH，BTG和B2X Bitfinex实际上可能会对这些事件进行调整，甚至在最近的帖子中回避讨论这种方案的可能性。看看他们的客户是否会要求上述方案是很有趣的。
Source : Markets Update: First of the Month Sees Bitcoin Skyrocket to 00+ The price of bitcoin continues to drive higher as the decentralized currency’s value has reached a high once again this week, touching $6,915 per BTC on November 1. Also Read: Meet the K-7 Offline Paper Wallet Generator Bitcoin Markets Rally Hard on November 1 According to the spot value across some of the world’s popular exchanges, bitcoin has reached an average of 6,915 on the first of the present month. Currently, the price is hovering just above 6,800 after some sell-off. The digital asset has been relentless all year long, seeing $500-1,000 increases with ease and sometimes in a day. At the moment bitcoin commands a $116B market capitalization with over $3B in trade volume over the past 24-hours. Besides bitcoin cash markets, which are up over 19 percent, nearly every other digital asset is dropping. The top five exchanges swapping the most bitcoin this evening include Bitfinex, Bithumb, Bitflyer, GDAX, and Hitbtc. Right now Japan is leading the pack, with the yen commanding 60 percent of the BTC volume by currency. The rest of the currencies following the Japanese yen include the USD, KRW, EUR, and the GBP. Moreover, gone are the days when China captured the lion’s share of bitcoin trade volume. Chinese trade volume has seen the CNY plummet from the fifth position just a few weeks ago, to an all-time low of nineteen out of all the world’s bitcoin trades. However Chinese trade volume, using over-the-counter (OTC) networks like Localbitcoins, has increased substantially. Bitcoin price reaches $6,915 across global exchanges. Technical Indicators Bitcoin prices are up well over 500 percent during the course of 2017 and are outpacing nearly every currency and commodity in the world, performance-wise. Currently, charts show incredibly bullish buy pressure and targets set at $7K are definitely attainable. The short-term Simple Moving Average (SMA) is coasting well above the long-term trendline, which means the path to the upside has very little resistance. Fibonacci retracement at 61.8 over the past 24-hours indicates an upwards trajectory of $7,200. The RSI is holding steady northbound, while order books show a mountain of sellers at the $7K range. If buyers can breach this zone, it might be really smooth sailing all the way to $7,600. If things are to go south, there is a vast amount of buyers around the 6,600 zone acting as the first solid foundation. After the sell-off, it’s likely we will see consolidation between the $6,700-6,800 range. After the high past $6900, bitcoin markets see some heavy sell-off to below $6,800Cryptocurrency Markets At the time of writing, the only two digital assets in the green are bitcoin (BTC) and bitcoin cash (BCH). Almost every other cryptocurrency market is suffering from 3-10 percent losses or more. Ethereum (ETH) is down 5 percent at $289 per ether, while bitcoin cash (BCH) has reached a high of $550 across global exchanges. Bitcoin cash has taken the third highest market valuation, pushing Ripple (XRP) …
Source : Bitcoin Screams Towards ,000 Making ruthlessly short work of the gap between $6,000 and $7,000, Bitcoin is poised to top yet another historic milestone. Having just celebrated its ninth birthday with a bang, the digital currency has shown no signs of a hangover on the day after. It’s been on an absolute rampage since and doesn’t seem to be stopping just yet. The uncertainty surrounding the August hard fork, and potential Chinese ban seem a distant memory as the price has to continued to rise of late. At the time of writing, the cost of a single Bitcoin is a staggering $6,852 – an all-time high for the digital currency-cum-commodity. Potentially positive news from China, and the tease of institutional cash pouring in via the CME future’s market poised to launch by the end of the year seems to be driving the price ever-closer to the psychological milestone of $7,000. This has year has, without doubt, been Bitcoin’s. However, Satoshi Nakamoto’s experiment has had to face more than its fair share of challenges since the start of 2017. Early rejections by the US Securities and Exchange Commission cast its Wall Street adoption in doubt in March and rising transaction fees across the network began to severely limit BTC’s use in business. Bitcoin entered the summer dogged by infighting amongst its developers and the threat of being overshadowed by Ethereum was real. Then came the insanity of August. The hard fork. The sell off and immediate rebound. The hottest investment of 2017 just couldn’t be stopped. The market rallied and the original Bitcoin remained on top. The fear and uncertainty provoked by malicious hard forks seemed silly with new highs being set most weeks of August. The market had spoken. It had chosen Bitcoin. Then there was the China blip. The eastern power managed to end Bitcoin’s parabolic summer growth with one legislative stoke. However, it wouldn’t be for long. The price quickly rebounded as good news poured in from elsewhere alongside the dawning realisation that Bitcoin was made to ruffle some feathers. It shouldn’t be surprising that authoritarian regimes didn’t get it. That was literally the point. In the wake of the response to the Chinese crackdown of September, the anti-fragility showed us a new beast; a tougher, more weathered Bitcoin. A seasoned rider who’d seen the worst and remained resolute on their quest. Now, with institutional money poised to pour in from the prospect of crypto future’s markets and the an influx of cash from those flogging off their various coin-split dividends, it seems likely that we’ll be posting plenty more generic, teary-eyed “look how far we’ve come” posts in the near future. Image: ShutterStock The post Bitcoin Screams Towards $7,000 appeared first on NEWSBTC.
Source : How to fix malleability? Use Bitcoin as cash Bitcoin (BCH) works best when used as a cash system. After all, it is designed to work as one. In a new blog post, nChain chief scientist Dr. Craig Wright addressed transaction malleability—the new-old issue that negatively affects the perception of cryptocurrencies as it is believed to create problems for the network. Transaction malleability allows someone to change a transaction’s unique ID before it’s confirmed on the network, making it possible for the person to pretend that the transaction didn’t happen. Complicated proposals have been made to “fix” this issue. SegWit, for instance, promises to solve transaction malleability by not “taking into account signatures when calculating the transaction’s fingerprint.” But why settle on complex and convoluted methods, when the answer is simple: use Bitcoin as a cash system. “Once we move past the unfounded FUD [fear, uncertainty and doubt] that has been oversold as a scaling issue (and seems more to be a method to extract value from Bitcoin into Alt-Coins) we start to see that Bitcoin was designed to work as cash and when it is used this way, it works best,” Wright said. Bitcoin was designed with the idea of splitting and re-joining transactions in mind, according to Wright. The concept can be read in Section 9 of the Bitcoin whitepaper, which states that “fan-out, where a transaction depends on several transactions, and those transactions depend on many more is not a problem here.” “Why are we seeking to make more difficult ‘solutions’ when a far superior method exists right now and was incorporated from the start into Bitcoin?” Wright said. “Malleability does not need a fix to stop this occurring. The nature of Bitcoin is to not require the use of third parties, so why are many people doing their utmost to make third parties a part of Bitcoin? Read Dr. Wright’s blog post, “Spending the simple way in Bitcoin Cash,” here. The post How to fix malleability? Use Bitcoin as cash appeared first on CoinGeek.
Source : Split or No Split? Bitcoin Miners See No Certainty in Segwit2x Fork Split or No Split? Bitcoin Miners See No Certainty in Segwit2x Fork It’s hard to find a franker bunch in the world of blockchain. While the attitudes of more corporate miners may have created the impression the sector itself is shrouded in secrecy, the trope doesn’t exactly hold weight. And though it’s true those who run the… The post Split or No Split? Bitcoin Miners See No Certainty in Segwit2x Fork appeared first on Altcoin Today.
Source : Bitcoin Tops British Milestone Bitcoin enthusiasts of Great Britain will have today been pleased to witness the most popular cryptocurrency speed past the exciting but largely trivial milestone of £5,000 – albeit briefly. Coinmarketcap, one of the industry’s favoured price referencing websites, recorded an all-time high for BTC of $6,645.40 earlier on Wednesday. According to currency conversion website XE.com, this equates to approximately £5,014. The high point came at around 16:35 London time but at several points since around 11am, the price crossed the £5,000 ($6,622) threshold. It has since pulled back slightly and at the time of writing, a single Bitcoin will set buyers back around £4,961. British news juggernaut, the BBC, reported the “historic moment of sorts”, providing yet more mainstream attention for the cryptocurrency space in the nation’s press. They detailed the meteoric rise of the virtual currency, highlighting its previous bull-runs in August, September, and the enormous upwards pressure seen in general since the beginning of 2017. Garrick Hileman, a research fellow at the prestigious University of Cambridge told the publication: It’s been a very innovative year – there have been a lot of new technology platforms for cryptocurrencies, which have lifted Bitcoin… It wouldn’t surprise me if the price were to go even higher. He’s hardly alone in his outlook, although few who share the professor’s background have the same optimism. Notable and respected state-side economics lecturers see the current enthusiasm as misplaced. However, there are no shortage of bulls’ voices coming to support Hileman’s opinion from the US side of the pond. Most notable perhaps are John McAfee with his audacious bet in which he’ll consume his private parts on live TV if Bitcoin doesn’t reach half a million dollars by 2020 and Max Keiser, the famous RT News analyst who makes regular optimistic reports about his price predictions for the digital currency without offering quite the same bold stakes. Bitcoin has shrugged off many challenges since January of this year to reach the all-time highs recorded today. Of these, there’s been hostility from several nations, including once-vital China, competition from the likes of Ethereum, and even the blockchain itself splitting numerous times. Each time the fear and uncertainty of one such event strikes, the price of Bitcoin struggles momentarily before assuming its upwards trajectory. This pattern seemingly proves the old Nietzsche adage: “What doesn’t kill you makes you stronger.” The post Bitcoin Tops British Milestone appeared first on NEWSBTC.
Just three days back, the second fork in the Bitcoin Network was activated, giving rise to another derivative cryptocurrency named Bitcoin Gold (BTG). However, after the hard fork was initiated, Bitcoin Gold has undergone quite a bumpy ride. Initially, the BTG website faced serious DDoS attacks which pulled down the website operations for several hours later. Soon after the hard fork was initiated on Tuesday, the price of Bitcoin was around $5300. Within 24 hours Bitcoin prices showed a strong momentum recovering to $5700 and above and now shows a price of $5861.00 per coin, according to the CoinMarketCap Bitcoin Price Index. However, during the same time, the price of Bitcoin Gold (BTG) plunged by nearly a whopping 75% from $528 to $127 and is now trading at $122.68 level. This is really surprising considering the fact that no exchanges have enabled deposits. The Bitcoin Gold was created in order to offer competing rewards in the mining process thereby requiring affordable computing infrastructure as opposed to Bitcoins more expensive one. Moreover, just like in the case of Bitcoin Cash (BCH), the Bitcoin Gold will also be made available to everyone holding Bitcoin at the time of fork. A few exchanges like Bitfinex, HitBTC and YoBit have already allowed users to start trading in Bitcoin Gold. In the major sell-off of Bitcoin Gold, exchanges Bitfinex and HitBTC contributed to maximum trading volumes. Expert Views on Bitcoin Gold Several independent analysts and financial institutions over the period of time have expressed mixed views over the split process. While some have stayed positive about it other believe that the split process poses a huge risk causing a large amount of confusion and uncertainty within investors. Sol Lederer, blockchain director at Loomia, told CNBC: “These forks are very bad for bitcoin. Saturating the market with different versions of bitcoin is confusing to users, and discredits the claim that there are a limited number of bitcoins — since you can always fork it and double the supply.” While on the other hand Bob Summerwill, chief blockchain developer at Sweetbridge, believes that splitting is a good thing allowing people to part ways having a contradictory view. In a word to Business Insider, Bob said: “Splits happen periodically in all open-source communities. Having everyone collaborating in a single project is ideal, but sometimes there are genuine differences of opinion, and network effects are not enough to keep everybody together, so a group secedes.” At this point of time, it will be too early to predict where the prices for Bitcoin Gold are heading. However, one thing is sure that the developer and technical behind Bitcoin Gold will have to have to overcome the underlying issues of transactions complications and other. It will be only then when they will be able to create trust within the investors to welcome to the BTG platform. The post Bitcoin Price Recovers After Hard Fork’s Fall While Bitcoin Gold is Trading at $120 appeared first on CoinSpeaker. Source>>> Bitcoin Price Recovers After Hard Fork’s Fall While Bitcoin Gold is …