区块链大事早知道，美好的一天从信仰开始！
The whole block chain thing would've known. The good day starts with faith!
行业动态
Industrial Development
01 Visa宣布在欧洲扩展快速通道计划，推出新组成部分
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Visa宣布在欧洲扩展快速通道（FastTrack）计划，推出新组成部分。其中包含快速通道合作伙伴工具包和名为Visa Ready for Fintech Enabler的认证计划。合作伙伴工具包可帮助金融科技公司加速增长并更好地为其客户提供服务，而Visa Readyfor Fintech Enabler计划能使金融科技公司更轻松地与经过认证的合作伙伴联系，以进行数字货币发行和其他服务。Visa称，全球范围内的快速通道参与度同比增长360％。同时，在数字货币发展上，Visa已与Crypto.com（UK）等公司紧密合作，将数字货币与其现有的6100万商户网络连接起来。
02 慢雾：OUSD闪电贷攻击者通过重入来凭空获得巨额的收益分配
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据慢雾区情报，2020年11月17日，以太坊DeFi项目 OUSD遭受闪电贷攻击。慢雾安全团队针对本次攻击进行简要分析：
1. 攻击者使用dydx闪电贷借出70000个ETH，随后通过Uniswap将其兑换为USDT和DAI。
2. 攻击者调用OUSD Vault的mint函数，Vault会先进行一次rebase将之前积累的奖励进行分配，随后将750万USDT从攻击者合约转入OUSD Vault中。此时OUSD合约会铸出等量的750万OUSD代币给攻击合约，最后通过allocate来结算当前的收益。
3. 在攻击者转入750万之前，Vault的价值约为7018138美元。攻击者转入750万USDT后将占Vault总价值的一半以上。
4. 随后攻击合约利用mintMultiple函数传入DAI合约地址与攻击合约的地址，同样是先进行一次 rebase ，将之前累计的收益进行分配(包含先前转入的 750 万 USDT 部分)，再通过 transferFrom 先将攻击合约的 2050 万 DAI 转入 Vault 中。随后将调用攻击合约的 transferFrom 函数，攻击者在攻击合约的 transferFrom 函数中构造再次调用 Vault 合约 mint 函数的逻辑来实现重入攻击。
总结：此次攻击关键在于调用外部合约造成的重入问题与Vault的rebase收益分配机制相结合，导致攻击者可以通过重入来凭空获得巨额的收益分配。针对此类情况，安全团队建议对传入资产进行检查后，对不在白名单内的资产直接进行回滚，并使用防重入锁以避免重入攻击。
, according to information on the slow fog zone, on 17 November 2020, the attacker was allocated the incentive accumulated prior to a rebase attack on OUSD. The slow fog security team undertook a brief analysis of the attack:
1. The attacker borrowed 70,000 ETHs from the dydx lightning loan and then converted them into USDT and DAI through Uniswap.
2. The attacker used the Mint function of OUSD Vault and Vault first used the incentive accumulated prior to the rebase attack, then distributed 7.5 million USDs from the owner's contract to OUSD Vault, then rebolded 7.5 million OUSDs in the contract and finally settled the current gain through Allocate.03 以太坊2.0测试网Prymont启动
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with Prymont starting on the Tai Fan 2.0 test networkEthermine矿池母公司Bitfly官方发推宣布，以太坊2.0测试网Prymont正式启动。该测试网启动意味着稳定的网络，测试验证者设置，beaconcha浏览器已经开始运转。The launch of the test network means a stable network, tester settings, beaconcha browser is operational.
04 泰国SEC修订净资本规则 允许证券公司持有加密货币等数字资产
04 Thailand SEC Revision of Net Capital Rules to allow securities companies to hold digital assets such as encrypted currency
泰国证券交易委员会(SEC)修订了其净资本规则，以加强证券公司和衍生品经纪人的流动性管理，支持泰国证券交易所激增的交易并适应数字资产交易。修订后的NC规则有望帮助计划进入开放式数字或加密货币交易等新业务的证券公司释放流动性。一些证券公司向泰国证券交易委员会咨询以期推出加密货币交易所。此外，泰国SEC将允许经营数字业务的证券公司能够持有各种形式的数字资产，如加密货币和其他数字资产，以这些数字资产的价值计算NC基金。但需要根据资产质量进行增减。消息人士称，数字资产可计算的最高金额为资产价值的50％。对于证券公司经营数字资产业务并为客户存储数字资产的情况，NC规则要求公司在冷钱包保留1%以上的资金(离线系统)和5%以上的客户资产存储在热钱包或在线系统。如果证券公司也经营数字资产业务，但不负责保留客户的数字资产，要求股东权益超过50万泰铢。
The Thai Securities and Exchange Commission (SEC) has revised its net capital rules to strengthen the liquidity management of securities companies and derivative brokers to support the surge in Thai stock exchange transactions and to adapt to digital asset transactions. The revised NC rules are expected to help securities companies planning to enter into new business such as open digital or encrypted currency transactions to release liquidity. Some securities companies consult the Thailand Securities and Exchange Commission with a view to launching an encrypted currency exchange. In addition, Thailand SEC will allow securities companies operating digital business to hold various forms of digital assets, such as encrypted currency and other digital assets, to calculate the NC fund based on the value of those assets. But it will need to increase or decrease by 50% of the value of the assets based on the quality of the assets. 05 北京大学区块链前沿研究实验室招收“申请-考核制”博士
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> .> Dr. “Application-testing” 11月18日，北京大学区块链前沿研究实验室宣布招收“申请-考核制”博士，面向对象需满足两个条件：（1）具有硕士学位；（2）扎实的编程基础和数学基础，有良好的英语水平，学习能力强，有一定的密码学基础。据悉，北京大学前沿计算研究中心区块链前沿研究实验室（The Frontiers in Blockchain Research）由邓小铁教授于2020年创立，旨在于走在当今世界区块链理论、技术、应用等三方面的前沿。
On 18 November, the Front Line Research Laboratory of the Block Chain of Beijing University announced the admission of a Ph.D. “Application-testing system” to its target audience, subject to two conditions: (1) a master's degree; (2) a solid programming and mathematics base with good English language skills, a strong learning capacity and a certain cryptography base. 06 Ledger升级NanoX固件以支持ETH2.0存款合约第三方服务验证
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Ledger upgrades NanoX fixtures to support ETH 2.0 deposit contract third-party service validation 硬件钱包提供商Ledger宣布升级NanoX固件1.2.4-5版本，此次更新将允许通过第三方服务验证以太坊2.0的存款合约。目前固件和以太坊应用程序升级仅在LedgerNanoX上提供，未来LedgerNanoS也会进行集成，新固件版本和以太坊应用程序更新预期将于2021年上线。此外，Ledger正在开发第二个以太坊应用程序。
hardware wallet provider Ledger announced the upgrade of version 1.2.4-5 of the NanoX fixedware, which will allow the validation of the Taiyo 2.0 deposit contract through a third-party service. Solids and Ether app upgrades are now available only on LedgerNanoX, will be integrated in the future, and new hardware versions and Ether app updates are expected to be online in 2021. In addition, Ledger is developing a second e-Team application.
07 中国安全产业协会区块链专业委员会筹备成立
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< strong > > The Specialized Committee on Block Chains of the China Safety Industry Association prepared for the establishment of 11月14日，中国安全区块链产业论坛在深圳高交会主会场会展中心举行。国家工信部原巡视员、中国安全产业协会监事长韩俊在会上宣读了《中国安全产业协会关于区块链专业委员会筹备成立的批复》，选举产生了中国安全产业协会区块链专委会，高精鍊当选理事长。中国安全产业协会区块链专家委员会主任艾安军表示，区块链赋能安全产业带来的新情况和新挑战需要我们树立新的安全观。相关部门按照包容审慎的监管原则，探索制定区块链技术与应用管理相关政策规章，研究完善区块链风险管理机制。加大对数字资产发行融资活动的监管力度，保护投资者权益，防范系统性风险。在区块链技术研发、应用中加强数据监管，分布式存储运行机制中依法依规保护个人和商业信息等安全。
On 14 November, the China Safety Zone Chain Industry Forum was held at the main venue of the Shenzhen High Council. At the meeting, the former Inspector General of the National Ministry of Industry and Communications and Director-General of the China Safety Industry Association read out the " Report on the Establishment of the Specialized Committee on Block Chains of the China Safety Industry Association ", which elected the District Chain Committee of the China Safety Industry Association and the High-level Chief Executive. The Director of the Committee of Experts on Block Chains of the China Safety Industry Association said that the new circumstances and challenges of the Block Chains'ability to secure the industry required a new security perspective. In accordance with the principles of inclusive regulation, the relevant departments explored the development of policies and regulations relating to block chain technology and application management, and studied mechanisms for improving the management of block chain risk management. 08 去中心化抵押借贷市场总借款量达30亿美元创历史新高
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to centralize the mortgage and lending market with a total borrowing of $3 billion at an all-time high 据DeBank数据显示，当前去中心化抵押借贷市场总借款量已达30亿美元，创下历史新高。去中心化借贷市场是一个基于智能合约的网络系统，加密货币持有者可以在这里将他们的链上资产/通证借给他人来获得利润。目前按照借款总量计算，排名前五的抵押借贷平台分别是：1、Compound：借款总量1,649,314,134美元；2、Maker：借款总量1,010,669,042美元；3、Aave：借款总量308,881,631美元；4、Cream：借款总量26,003,410美元；5、ForTube Bank V2：借款总量4,699,186美元。
According to DeBank data, the total borrowing volume of the current decentralized mortgage market has reached $3 billion, a record high. Decentralized lending market is an intelligent contract-based network where crypto-money holders can lend their chain assets/passports to others for profit. Currently, the top five mortgage lending platforms are: 1, Compound: total borrowings of $1,649,314,134; 2, Maker: total borrowings of $1,010,669,042; 3, Aave: total borrowings of $308,881,631; 4, Cream: total borrowings of $26,003,410; 5, Fortube Bank V2: total borrowings of $4,699,186. 09 灰度正在招聘研究分析师
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< strong > Grayscale is recruiting research analysts Linkedin信息显示，灰度在今早开放了一个名为“研究分析师”的职位，应聘者需要对数字货币生态有热情，热衷学习，能够使用工具进行深度分析。工作职责包括处理投资者、客户、团队成员要求，帮助进行数据建模和报告，支持新产品开发，研究市场、链上（数据）、宏观经济数据等，为投资者提供洞见，为灰度业务的所有功能提供研究支持等。据悉，灰度的加密资产管理规模已在11月18日达到100亿美元。
Linkedin information shows that the Greyscale opened this morning a position called “Research Analyst” and that candidates need to be passionate about digital money ecology, keen to learn, and able to use tools for in-depth analysis. Work responsibilities include handling requests from investors, clients, team members, helping with data modelling and reporting, supporting the development of new products, researching markets, chains, macroeconomic data, etc., providing insight to investors, research support for all functions of the Greyscale operation. 10 Bitcoin ABC推出0.22.7版本 分别适用于BCHA网络和BCHN网络
10 Bitcoin ABC launch version 0.22.7 for BCHA network and BCHN network, respectively
11月18日早间，Bitcoin ABC官方发推宣布推出Bitcoin ABC 0.22.7版本。该版本对软件稳定性做了小幅改进。与此同时，Bitcoin ABC也推出了适用于BCHN网络的0.22.7版本。此前消息，Bitcoin ABC团队宣布，将在BCH分叉后支持BCHN和BCHA两条链，将会继续维护BCH节点。
On the morning of 18 November, Bitcoin ABC officially announced the launch of version 0.22.7 of Bitcoin ABC. This version has resulted in a minor improvement in software stability. Meanwhile, Bitcoin ABC has also launched version 0.22.7 for BCHN networks. Previously, Bitcoin ABC team announced that it would support BCHN and BCHA chains after BCH splits and that it would continue to maintain BCH nodes. 11 波兰首都地铁站神秘广告以ETH奖励悬赏区块链解决方案
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secret advertisement of the Polish capital subway station to reward ETH for the solution of the chain of reward blocks 波兰首都华沙爆发了病毒式营销活动，地铁站中贴满了写着“解开谜题，索取奖励”的海报。海报将乘客引向一个以太坊地址，里面有7枚ETH奖励，以及哈希标签#0xPOLAND和#0xPOLANDHEIST。该活动背后的推特账户是0xPoland，该账户链接到一个显示倒计时的网站，将在UTC时间周四上午9点24分截止。参与者必须将正确的解决方案输入智能合约才能获得以太坊奖励。
Warsaw, the capital of Poland, has an outbreak of viral marketing, and the subway station has a poster that says, "Close the puzzle and ask for a reward." The poster leads the passengers to an Ethio address, with seven ETH awards in it, as well as Hashi tags #0xPOLAND and #0xPOLANDHEIST. The Twitter account behind the event is 0xPoland, and the account links to a website showing countdowns, which will close at 9.24 a.m. UTC time. Participants must enter the right solution into a smart contract to get a Taiyo reward.
一级市场
Level One Market
01 加密安全公司Fireblocks在B轮融资中筹集3000万美元
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Encryption Security Company Fireblocks raised $30 million in Round B finance 据The Block消息，加密安全公司Fireblocks已在B轮融资中筹集了3000万美元，本轮由风险投资公司Paradigm领投。参与该轮融资的其他投资者包括Galaxy Digital等机构。Coinbase和Paradigm创始人Fred Ehrsam加入Fireblocks董事会。Fireblocks计划扩大其团队和基础设施。
According to The Block, Fireblocks, an encryption security company, has raised $30 million in round B financing, led by the venture capital company Paradigm. Other investors involved in the round include Galaxy Digital, among others. Fred Ehrsam, founder of Coinbase and Paradigm, joined the Fireblocks Board. Fireblocks plans to expand its team and infrastructure. 02 一致资本战略投资羊驼之城
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< strong > unison capital strategy to invest in the city of camels S.Capital一致资本宣布战略投资DeFi+NFT项目羊驼之城Alpaca City。本次战略投资将为团队提供深度支持，拓展全球市场。据悉，羊驼之城是建立在以太坊上的一座虚拟城市，用户们可以通过收藏和繁育羊驼NFT来管理他们的链上资产。羊驼之城通过结合收益耕作与NFT为公民们提供一个开放的去中心化金融游戏平台。
S. CapitalCapital announces strategic investment in the DeFi+NFT project. This strategic investment will provide the team with deep support to expand the global market. The Camel City is known to be a virtual city based on Ether, where users can manage their chain assets through the collection and breeding of camels NFTs. 03 DAO平台SubDAO获得Web3基金会Grant资助
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DAO platform SubDAO received Grant funding from Web3 Foundation 据官方消息，Web3基金会官方Grant更新了资助审核列表，DAO平台SubDAO获得资助，SubDAO也成为首个专注于解决Substrate链多样化治理的DAO平台。SubDAO是一个基于Substrate、创建一个可以让任何组织创建和管理跨链DAO组织的平台。同时，SubDAO也是PAKA Labs加速器首个孵化项目。
According to official sources, the official Grant of the Web3 Foundation updated the list of funding clearances, the DAO platform SubDAO was funded, and the SubDAO became the first DAO platform dedicated to addressing the diversity governance of the Substrate chain. SubDAO is a substrate-based platform that allows any organization to create and manage a multi-chain DAO organization. At the same time, SubDAO is also the first hatching project of the PAKA Labs accelerator.
04 开放式可编程保险市场Tidal Finance获得LD Capital投资
04 Open programmable insurance market Tidal Finance received LD Capital investment
据官方消息，开放式可编程保险市场Tidal Finance获得LD Capital投资。Tidal Finance是建立在波卡Polkadot上类似Balancer的保险市场，具有为多个链中的一个或多个资产创建自定义保险池的功能，通过给予池创建者部分存款收益作为奖励达到资本效率的最大化。Tidal Finance前后获得了来自LD Capital，NGC Venture，AU21 Capital，Kenetic，QCP，Genesis Block，DFG 等机构数百万美金投资。为了有效的控制风险，Tidal finance已和知名安全公司(peckshield，Haechi Audit)创建合作关系。
According to official sources, the open programmable insurance market Tidal Finance receives LD Capital investments. The Tidal Finance is an insurance market based on Polkadot in Poca, similar to Balancer, which has the function of creating a self-defined pool for one or more assets in multiple chains, maximizing capital efficiency by giving some of the pool creator's savings gains as an incentive. 二级市场
Secondary Market
01 福布斯专栏作家：进入2021年后比特币投资者需注意五个指标
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Forbes columnist: After entering 2021, Bitcoin investors need to pay attention to five indicators 福布斯专栏作家Leeor Shimron于11月18日刊文称，在进入2021年后，投资者应密切注意以下五个指标：1.交易所余额/交易所净流量。最近比特币的大量外流表明，比特币已经从短期投机者转移到长期持有者。2.比特币储存量。目前约有84.2万枚比特币(占比特币总供应量的4%)存在于企业的资产负债表中，而企业在资产负债表上积累比特币会进一步减少可用供应量。3.比特币谷歌搜索量。尽管比特币价格最高涨至18000美元上方，但谷歌搜索量仅为2017年最高点的10％。这表明当前的市场周期仍处于极早阶段，只有达到新历史高点后，更多的人才会开始追赶。4.永久掉期融资利率。目前永久掉期融资利率约为0.005%，这表明多空杠杆交易者已经相当平衡。5.比特币有效供应量/休眠代币。比特币的一年有效供应自2018年初以来一直处于下降趋势，超过60％的可用供应量在过去一年没有移动，而超过40％的供应量在过去两年没有移动。尽管比特币波动很大，但比特币持有者拒绝出售，而且这种趋势似乎还在持续。The recent exodus of Bitcoins indicates that bitcoins have been transferred from short-term speculators to long-term holders. 2. Bitcoins are currently in the balance sheet of the enterprise about 842,000 bitcoins (4 per cent of the total Bitcoins supply) and the firm's accumulation of bitcoins on the balance sheet will further reduce available supplies. 3. Bitcoins googles. Although the price of bitcoins rose up to $18,000, Google searches reached only 10 per cent of the highest point in 2017. This indicates that the current market cycle is still very early and that more people will start catching up only after reaching new heights. 4. Permanent drops in financing rates.
02 路透社：此次比特币崩盘的可能性较小
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Reuters: Bitcoin is less likely to crash this time 路透社11月18日刊文称，随着比特币飙升至2017年历史高点的顶端，支持者希望有更少的疯狂散户投资者，这意味着此次崩盘的可能性较小。与2017年不同，该资产现在拥有功能完善的衍生品市场和知名金融机构的托管服务。这种基础设施的出现使从对冲基金到家族办公室的专业投资者更容易寻求加密货币的投资。此外，文章称，法规也已发展。尽管加密货币领域仍然大多很少受到监管，但反洗钱（AML）等领域的全球标准已经出现，为更大的投资者开辟了道路。然而，尽管市场结构和主流认知度有了所有改善，但比特币仍然高度波动。与主流金融市场相比，加密货币领域仍然更加不透明，监管也更少。交易数据仍然不完整，并且对市场操纵的担忧越来越多。Unlike in 2017, the asset now has a well-functioning derivative market and hosting services for well-known financial institutions. This infrastructure makes it easier for professional investors from hedge funds to family offices to seek investment in encrypted money. Moreover, it says that regulations have developed. While the area of encryption money remains largely unregulated, global standards in areas such as anti-money-laundering (AML) have emerged, opening the way for larger investors. However, despite all improvements in market structure and mainstream awareness, the area of encryption remains highly volatile.
03 多消息源称徐明星已获一定自由
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multi-sources say Xu Star has been set free 据吴说区块链消息，多个消息源表示，徐明星已获得（一定的）自由，取保候审或是结束调查目前尚未确定。OK内部也有消息表示与徐明星已建立联系。至于外界最为关心的提币问题，暂时没有确切消息，需要等待官方公告或安排相应方案。OK方面称未收到有关徐明星的相关信息。
According to Wu, multiple sources indicate that Xu is free (some) to bail out or to close the investigation. There are also reports of contact with Xu. There is no accurate information on the issue of currency notes, which is of most concern to the outside world, pending an official announcement or an arrangement.
04 数据：比特币股票产品交易量激增
04 data: Bitcoin stock exchange surge
加密统计网站CryptoCompare的研究显示，比特币股票产品交易量大幅增长。Grayscale的比特币信托产品(GBTC)仍占比最大，其交易所交易产品(ETP)的市值为91亿美元，比上个月增长了56%，其中场外交易产品创下了2.15亿美元的周资金流入记录。灰度以太坊信托产品（ETHE）市值为17亿美元，比上个月增长了40%。A study by Crypto Compare, the encrypted statistical website
, shows a significant increase in the volume of trade in Bitcoin stock products. Grayscale's Bitcoin Trust (GBTC) continues to account for the largest share, with a market value of its exchange traded products (ETP) of $9.1 billion, an increase of 56 per cent over the previous month, with off-site traded products generating a record of $215 million a week in inflows. Grayscale has a market value of $1.7 billion for Taiku Trust products, an increase of 40 per cent over the previous month.
05 加密交易所Liquid遭入侵 用户数据或因安全漏洞暴露
05 Encrypted Exchange Liquid has been compromised user data or exposed to a security breach
Liquid首席执行官Kayamori于11月18日在网站上发布通知说，11月13日交易所发生了一起入侵事件。入侵者更改DNS记录，然后控制了大量内部电子邮件帐户，最终，他们能够“部分破坏”该交易所的基础设施并访问存储的文档。Kayamori说，攻击者可能已经获得了用户的电子邮件、姓名、地址和加密密码等数据。目前，Liquid正在调查攻击者是否访问了提交给“知道你的客户（KYC）”验证的身份文件和照片。该公司首席执行官表示，发现攻击后Liquid就“拦截并遏制了攻击”，并对基础设施进行了全面审查。他称，“我们可以确认客户资金安全，mpc和冷钱包是安全的，没有被破坏。”Kayamori, Chief Executive Officer of
Liquid, posted a notice on the website on 18 November that there had been an invasion of the exchange on 13 November. The intruder changed the DNS record and then controlled a large number of internal e-mail accounts. Eventually, they were able to “partially destroy” the business infrastructure and access stored documents. Kayamori said that the attackers might have obtained user data such as emails, names, addresses and encrypted passwords. Liquid was currently investigating whether the attackers had visited identification documents and photographs submitted to “know your customer (KYC)” certification. The CEO of the company stated that Liquid had “interdicted and contained the attack” after the attack had been discovered, and had conducted a thorough review of the infrastructure. He said, “We can confirm that the customer's funds are safe, mpc and cold wallets were safe and not destroyed.”
/blockquate>06 BTC突破18400美元关口 ETH突破490美元关口
06
BTC Breaks $18,400 and ETH Breaks $490 火币全球站数据显示，BTC持续上涨，于11月18日午间突破18400美元关口，最高涨至18469.48美元，创2017年12月以来新高。“比特币站上18000美元”登上微博热搜榜。ETH也持续上涨，突破490美元关口，最高涨至495美元，创2018年7月以来新高，行情波动较大，请做好风险控制。Data from the
Fireworks Global Station show that BTC continued to rise, breaking the $18,400 threshold at noon on 18 November, reaching a maximum of $18,469.48, the highest level since December 2017. The 07 Coinbase CEO：团队正努力扩容应对突增的流量 牛市是刺激与压力并存
07
Coinbase CEO: Teams are trying to expand their response to surges of traffic. 11月18日加密货币交易所Coinbase首席执行官Brian Armstrong发推称，团队正在努力增加容量，包括服务器和客户端，以应对突增的流量。在牛市奔跑是刺激与压力并存。据悉，11月17日凌晨比特币价格上涨，Coinbase的网站和移动应用就出现过短暂无法加载的情况。
November 18, the chief executive officer of the encrypted currency exchange Coinbase, Brian Armstrong, assumed that the team was working to increase capacity, including servers and clients, to cope with surges in traffic. Running in the cattle market was a combination of stimulus and pressure. It was known that the price of Bitcoin had increased in the early hours of November 17, and Coinbase's website and mobile applications had been temporarily unloaded.
08 CCTV-2报道：第四季度以来，比特币在不到50天的时间里大涨70%
08
CCTV-2 Report: Since the fourth quarter, Bitcoin has increased by 70% in less than 50 days CCTV-2（央视财经频道）报道称，截止到北京时间11月18日凌晨，市值最高的加密货币比特币突破了17000美元，达到17534美元，创下了今年以来新高，价格是2017年12月份以来的最高水平。进入第四季度以来，比特币开启了新一轮的行情，在不到50天的时间里大涨了70%。分析认为，同2017年相比，目前比特币的网络建设、开发环境和投资生态都已经今非昔比。如果说2017年的动力来自于市场上的散户投资者，那么今年下半年的上涨则是得到了机构资金的推动。
CCTV-2 (Visual Finance Channel) reported that by the early hours of November 18, Beijing time, the highest-value encrypted currency, Bitcoin, had broken by $17,000, reaching $17,534, the highest price since December 2017. After entering the fourth quarter, Bitcoin started a new round, a 70% increase in less than 50 days.
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