精選快訊
以太坊主網每日數據
2019 年 2 月 23 日，以太幣交易總額為 1,570,081 ETH ，比前日下降 25.63%；日活躍用戶量 126,634，比前日下降 5.23%；新增合約 11,234 個，比前日上升 40.20%；平均交易費用為 14.08 GWEI，比前日下降 5.12%；最活躍合約為 SUM TOKEN（SUT）；通證代幣交易總額為 356,893 個，比前日下降 2.31%。
◎數據來源：Amberdata.io
研究表明：梅特卡夫定律只適用於比特幣長期發展
根據一項新的研究結論，梅特卡夫定律只適用於比特幣長期發展。研究者發現，在短期內，定律的有效性有待質疑。研究者分析了 2010 - 2018 年比特幣的數據，研究結果顯示有出從眾行為的可能性。因此研究者也用對數周期性冪律模型（LPPL）來判斷泡沫期加密貨幣匯率的表現，從而最終得出模型切換時期的預測。為了評估梅特卡夫定律是否以及如何適用於比特幣，研究者就特殊比特幣地址的數量以及它們在研究期間的一系列發展進行了追蹤。
STUDY: METCALFE』S LAW MAY APPLY TO BITCOIN ONLY IN THE LONG TERM
A new study has concluded that Metcalfe’s law may only be applicable to Bitcoin for the long term. In the short term, the researchers found the validity of the law to be 「questionable.」 The researchers analyzed blockchain data from 2010 to 2018 and their results also showed potential for herding behavior. This is why they also used Log-Periodic Power Law (LPPL) model to determine the behavior of cryptocurrency exchange rates during bubble periods and to eventually predict the most probable time of a regime switch. In order to evaluate how and if Metcalfe’s law applies for Bitcoin’s network, the researchers looked at the number of unique Bitcoin addresses and their progression through the time of the study.
◎內容來源：bitcoinist
2019 年如何用比特幣支付僱員薪水
Bitwage 是一家從事用比特幣支付員工薪水服務的公司。採取這種方式並不需要僱主操作入職流程，而且僱員無論在何地都能在 48 小時之內拿到工資。這家公司最近登上了報紙頭條，因為他們為原本用 W-2 的美國僱主提供用比特幣支付薪水的選擇。儘管現在有了用比特幣支付薪水的選擇，一些手續仍然會讓人們堅持選擇傳統支付方式。如果僱主想為員工提供其它獲得薪水方式的選擇，那麼建立一個公司職工持股計劃（ESOP）可能是更好的選擇。
HOW TO PAY EMPLOYEES WITH BITCOIN IN 2019
Bitwage is a company that has specialized in the emerging desire that employers have to pay their workers in bitcoin. Taking this approach does not require employers to go through an onboarding process, and employees get their wages in less than 48 hours no matter where they are. The company made headlines recently by adding the option for U.S.-based employers who receive W-2s to opt for getting paid in bitcoin. Although the option to pay people in bitcoin exists, some caveats could make them want to stick with traditional forms of payment. When employers want to give their workers other options for getting paid, setting up an employee share ownership plan (ESOP) could be a more viable choice.
◎內容來源：bitcoinist
移動遊戲和電子競技骨灰級玩家 Kevin Chou 創立區塊鏈遊戲公司 Forte
韓國電信巨頭 KT Corp. 正準備在今年 3 月推出區塊鏈服務( BaaS )。就像許多其他 BaaS 平臺一樣，它將減少進入該行業的阻礙，並培育一個創新的生態系統。據 inews24 報導，韓國電信執行長 Hwang Chang-Kyu 在區塊鏈企業活動上公布了這一計劃。 KT BaaS 將基於雲計算，旨在實現區塊鏈的可訪問性。看好區塊鏈的 KT 公司解釋說， KT BaaS 使用起來非常簡單，區塊鏈節點可以「通過幾次單擊進行配置」，並且可以輕鬆部署智能合約。
Mobile Gaming and eSports Veteran Kevin Chou Launch Blockchain Gaming Firm, Forte
Kevin Chou, US-based video game expert and entrepreneur, also the CEO and co-founder of Kabam, has announced the launch of Forte, a new gaming startup focused on changing the face of gaming via blockchain technology. Chou’s company, Kabam, is an entertainment company that has developed several popular multiplayer games including the popular Marvel Contest of Champions for smartphones. Backed by video games veterans from firms such as GarageGames, the creator of the Torque 3D and several other game engines, Unity, and Linden Lab, the makers of the Second Life virtual world, Forte is aimed at creating a robust platform for game developers to promote the broader adoption of blockchain technologies supporting peer-to-peer economies in both new and existing games. Chou said: 「Blockchain technology provides new growth vectors and an opportunity to do things differently. We are poised to make blockchain technology ready for the mass market and actively collaborating with developers to build player-driven game economies that will benefit devs and players.」
◎內容來源：ccn
Fidelity 成為第一家傳遞「閃電聖火」的金融機構
Fidelity Digital 是 Fidelity Investments 的數字資產部門，成為了第一家收到比特幣「聖火」的金融機構，這把「聖火」通過閃電網絡在用戶之間傳遞。Bitcoinist 報導稱，「閃電聖火」在出現的短短幾周內就獲得了出人意料的認可度。 據官方追蹤網站表示， Fidelity Digital Assets 是第 229 位接到「聖火」的實體。但更重要的是，Fidelity 是第一家傳遞這把數字「聖火」的金融機構。參與這次支付傳遞將很有可能為 Fidelity Digital Assets 提供一些有價值的經驗。如 Fidelity Digital Assets 創始人 Tom Jessop 所說，Fidelity Digital Assets 「希望為數字財產創造一個服務周全的企業級平臺」。
FIDELITY BECOMES FIRST FINANCIAL INSTITUTION TO TAKE BITCOIN LIGHTNING 『TORCH』
Fidelity Digital, the digital assets arm of Fidelity Investments, has become the first financial institution to receive the so-called bitcoin payments 『torch』 that is being relayed from user to user around the globe via Bitcoin’s Lightning network. As Bitcoinist reported, Lightning Torch has gained a surprising level of recognition in the few weeks it has existed. Fidelity Digital Assets becomes the 229th entity overall to get the torch, according to the official tracker website. But, more importantly, Fidelity becomes the first financial institution to get its hands on the digital 『torch.』 Participation in this payment relay will likely provide some valuable experience for Fidelity Digital assets that is looking 「to create a full-service enterprise-grade platform for digital assets,」 according to its founding head, Tom Jessop.
◎內容來源：bitcoinist
大咖說
Joseph Young
加密金融分析師
由於比特幣的價格仍處於 4000 美元的水平，目前加密市場仍深陷熊市囹圄，雖然現在說還為時尚早，但有足夠的理由說熊市已觸底。
1.成交量恢復（BTC 每日成交量達 80 億美元）
2.CME BTC 期貨成交量創歷史新高
3.機構紛紛投資加密領域（Gtayscale 獲 2.74 億美元投資 ）
Crypto is still deep in bear market as Bitcoin is at $4k and it's too early tell but a strong case can be made that it reached a bottom.
1. Volume recovering (BTC $8 billion daily)
2. CME BTC futures record high volume
3. Institutions investing in crypto ($237M in Grayscale)
◎內容來源：Twitter
Vlad Zamfir
以太坊基金會首席研究員
加密/區塊鏈領域有一堆胸懷社會理論的人，這些理論規範了我們做區塊鏈技術的搭建方法、使用方法以及管理方法的決定時的依照的標準。
The crypto/blockchain space is full of people with social theories, and these theories structure the matrix in which we decide how to build, use and govern the technology
◎內容來源：Twitter
Eric Conner
EthHub 創始人
與2個月前相比，現在每月可賣的 ETH 數量減少了 270,000 枚。
在分析此價格反彈時，讓我們不要忘記保持健全的經濟。
There are 270,000 less ETH a month to sell right now versus 2 months ago.
Let’s not forget sound economics when analyzing this price bounce.
◎內容來源：Twitter
Ryan Sean Adams
Mythos Capital 創始人
BTC 和 ETH 的三種市場需求：
1. 實用性，狀態更改的需求（交易、Gas手續費）
2. 投資。該需求因預測價格上漲而產生
3. 貨幣。所謂一種在加密經濟中的貨幣所產生的需求（加密貨幣的SoV/MoE/UofA）
每個因素都影響價格
「Uniteims註：SoV = Store of Value 價值儲存；MoE = Medium of Exchange 媒介交換；UofA = Unit of Account 記帳單位、價值尺度」
Three types of market demand for BTC & ETH
1. Utility. Demand for state changes (transactions, gas)
2. Investment. Demand due to expectation of price gain (speculation)
3. Money. Demand as a money in crypto economies (SoV/MoE/UofA in crypto)
Each factor into price
◎內容來源：Twitter
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（責任編輯：何一華 HN110）