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      "author": "heerang",
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      "author": "ohbama",
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      "author": "ohbama",
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      "body": "![](https://steemitimages.com/DQmbj3o2fPyamNjPmHdFDgbuuNqreva3bEUqv1zqzUQoCiz/image.png)\n\n안녕하세요 오호바마 @ohbama 입니다.\n\n[MIT Technology Review](https://www.technologyreview.com/newsletters/) 를 매일 구독하고 있는데\n매주 화/목에 블록체인에 관련된 뉴스레터인 [Chain Letter](https://www.technologyreview.com/newsletters/chain-letter/)를 보내줍니다.\n이를 정리/요약 및 코멘트 해서 포스팅합니다.\n조금 더 자세한 내용이나 시사점이 궁금하다면 코멘트에 요청해 주세요.\n\n#  첫번째 블록체인 ETF가 Nasdaq과 NYSE에 상장 되었습니다. [(CoinDesk)](https://www.coindesk.com/the-first-blockchain-etfs-have-launched-on-the-nasdaq-exchange/?utm_source=MIT+Technology+Review&utm_campaign=4c94404bfc-EMAIL_CAMPAIGN_2017_11_02&utm_medium=email&utm_term=0_997ed6f472-4c94404bfc-153864341)\n* 자세한 내용은 아래에 다룹니다.\n\n# 한국에서 국내 암호화폐 거래소의 폐쇄를 고려하고 있습니다. [(Reuters)](https://www.reuters.com/article/us-southkorea-bitcoin/south-korea-considers-shutting-down-domestic-cryptocurrency-exchanges-idUSKBN1F706T?feedType=RSS&feedName=technologyNews&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+reuters%2FtechnologyNews+%28Reuters+Technology+News%29&utm_source=MIT+Technology+Review&utm_campaign=4c94404bfc-EMAIL_CAMPAIGN_2017_11_02&utm_medium=email&utm_term=0_997ed6f472-4c94404bfc-153864341)\n* 해외에서 국내의 암호화폐 거래소 폐쇄 이슈에 관련해서 심각하게 생각하고 있음을 볼 수 있습니다.\n* 1/18일 목요일 오전에 나온 로이터 통신 기사는 18일 정무위원회에서 최종구 금융위원장의 발언이었던 \"암호화폐 거래소 폐쇄 또는 불법만 폐쇄 발언\"을 인용하였습니다.\n* 역주: 공산주의 국가가 아니고 암호화폐의 관련된 법을 제정하기 전까진 암호화폐 거래소가 폐쇄 되긴 힘들거라고 생각합니다.\n\n# 하드웨어 코인 지갑을 만드는 회사 Ledger가 7,500만 달러의 신규 투자를 받았습니다. [(Bloomberg)](https://www.bloomberg.com/news/articles/2018-01-18/bitcoin-wallet-maker-ledger-raises-75-million-for-security-push?utm_source=MIT+Technology+Review&utm_campaign=4c94404bfc-EMAIL_CAMPAIGN_2017_11_02&utm_medium=email&utm_term=0_997ed6f472-4c94404bfc-153864341)\n\n![](https://steemitimages.com/DQmcxFux3gy7gpD8ejPt46UoUBywPkexHqkpgMPLtpLbDJf/image.png)\n\n* 하드웨어 지갑은 USB형태의 암호화폐 지갑으로 지갑의 열쇠인 private key가 내부에 암화화 되어 있어서, 소트웨웨어 지갑 (예를 들면 MyEtherWallet)보다 훨씬 해킹에 안전합니다.\n* 2014년에 세워진 이 스타트업 회사는 7,500만 달러 (한화 약 800억원)의 투자를 받았습니다.\n* 작년 2017년 한해에만 600억원의 매출을 달성 했었습니다.\n* 역주: 하드웨어 지갑은 아직 블루 오션이라 생각 합니다.\n\n---\n\n# 첫번째 블록체인 ETF 2개 Nasdaq과 NYSE에 상장\n\n![](https://steemitimages.com/DQmfQyhXaqdcTTNeFRrpFe53odNvobh5JjYK61M3DNnmseU/image.png)\n![](https://steemitimages.com/DQmZpePDEUHupYs8u4rHJqbNXQSJ5TND5RDo9qGbhCvPmmn/image.png)\n\n* 과연 코인의 시세에 영향을 줄것인가? \n눈에 띄게 큰 영향이 없을것 같습니다. 하지만 이 ETF들이 투자하는 회사에서 투자하는 코인 또는 블록체인 플랫폼/어플리케이션에는 어느정도 영향을 줄 것 같습니다.\n* 과연 여기에 투자해야 하는가? \nETF의 특성상 변동폭이 크지 않아서 안전하면서 블록체인에 투자하는 회사에 어느정도 지분을 확보 하고 있어서 블록체인에 직접 투자 (코인 매매, 특정 기업의 주식 취득)를 하지 않는다면 이쪽 기술분야에 쉽고 편하게 투자 하는 옵션이 될 수 있을 것 같습니다.\n\n* Reality Shares' Nasdaq NextGen Economy ETF (BLCN) 라는 이름으로  Nasdaq 시장에 $24.20로 상장 됬습니다.\n* Amplify's Transformational Data Sharing ETF (BLOK) 라는 이름으로 NYSE 시장에 $20로 상장 됬습니다.\n* 이 ETF들은 코인에 직접 투자를 하는게 아니라, 코인에 투자를 하는 상장된 회사에 투자를 합니다.\n* 그래서 ETF 가격의 변동 폭은 코인 처럼 크지 않습니다. 우리가 알고있는 다우지수(Dow) S&P500 지수도 ETF의 종류중 하나이며 하루 낙폭이 2-3%이면 뉴스에 나오는 정도 입니다.\n* 주요하게 봐야 할점은 ETF가 투자 하고 있는 회사 입니다. 그래야 어떤 회사가 블록체인 산업에 유망한 기업이지 파악 가능 합니다.\n* 주로 포함된 기업으로는 IT기업 (IBM, Intel, Cisco, Microsoft, Nvidia, AMD 등) 과 금융권들 (Citi, Goldman Sach, Square, ING 등)입니다.\n* 눈에 띄는 중국과 일본 회사가 포함되어있습니다.\n* BLOK ETF가 어디에 투자한지 보여주는 내역 입니다. https://www.amplifyetfs.com/blok-holdings\n\n![](https://steemitimages.com/DQmfCnXJjVeroCK1eHw862DyAWRrnPkbpJF5DFj2vWLWWEH/image.png)\n\nTAIWAN SEMICONDUCTOR MFG LTD SPONSORED ADR (TSMC):\n* ETF의 가장많은 포션인 6.31%가 투자된 대만의 반도체 위탁생산업체 입니다. \n* 아이폰의 장착되는 프로세서를 독점 개발합니다.\n* 또한 암호화폐 채굴에 쓰이는 그래픽카드 회사중에 하나인 Nvidia에 반도체를 공급합니다.\n\nDIGITAL GARAGE:\n* 두번째로 많은 포션을 가진 일본의 IT기업 입니다.\n* Blockstream Corp (캐나다 기업)과 함께 일본 내의 블록체인 기반의 플랫폼과 제품을 개발중 입니다.\n* 워렌버핏의 회사 버크 샤이어의 자회사 미디어 BusinessWire 에서 다룬 [기사](https://www.businesswire.com/news/home/20170203005162/en/Digital-Garage-Jointly-Develop-Next-Generation-Platform-Technology)\n* 아직 많은 정보가 없지만 블록체인 ETF에서 2번째로 큰 포션을 차지하고 있는 만큼 주목 할 필요가 있을 것 같습니다.\n\nOVERSTOCK COM INC DEL:\n* 3번째로 많은 포션을  가진 미국의 온라인 쇼핑 사이트 입니다.\n* 아마존과 같이 온라인에서 상품을 파는 사이트 인데, 남은 재고 또는 반품됬던 상품을 다룬다고 합니다.\n* CEO가 비트코인의 초기 서포터 중 한명이며, 이 사이트에서는 2014년부터 비트코인을 결제 수단으로 받았습니다.\n* Overstock내에서 [Medici](http://www.mediciventures.com/)라는 블록체인 VC 그룹을 만들어서 2018년 현재 11개의 블록체인 투자를 하고 있습니다.\n* 최근 tZero ICO를 진행 했습니다.\n\nSBI HOLDINGS INC:\n* 4번째로 많은 포션을 가졌으며 일본의 증권 회사 이며 소프트뱅크의 자회사 입니다.\n* 해외 거래소 크라켄 (Kraken)등 여러 블록체인 기업에 투자중 입니다.\n\nINTERNATIONAL BUSINESS MACHS COM (IBM):\n* 5번째, IBM은 자체 블록체인 기술인 하이퍼레저 (Hyperledger)를 만들고 있죠.\n\nHIVE BLOCKCHAIN TECHNOLOGIES:\n* 6번째, 중국의 채굴 회사 입니다.\n\nGMO INTERNET INC:\n* 9번째, 일본의 인터넷 기업입니다.\n* 직접 채굴 및 블록체인에 투자 하고 있습니다.\n* 급여를 일부 비트코인으로 받을 수 있다고 합니다.\n* 2018년중 ICO를 진행 한다고 합니다.\n\n각 기업에 대한 더욱 자세한 내용은 추가적으로 파해치도록 하겠습니다.\n\n---\n\n이번주의 TechReview 리스트\n* [TechnologyReview | 2018.1.16 비트코인 시세 조작 정황 포착 (알트코인, 거래소를 조심해야하는 이유, 규제가 필요한 이유)](https://steemit.com/kr-newbie/@ohbama/technologyreview-or-2018-1-16)\n* [TechnologyReview | 2018.1.15 인공지능의 독해 능력 인간 능가, 중국의 비트코인 채굴 금지와 캐나다에서의 비트코인 마이닝 기회](https://steemit.com/kr-newbie/@ohbama/technologyreview-or-2018-1-15)",
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      "title": "TechnologyReview | 2018.1.18 첫번째 블록체인 ETF 2개 Nasdaq과 NYSE에 상장 | 어떤 회사가 포함 되었나?"
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      "author": "jinjin.park",
      "body": "감사합니다:) 자주 소통해요",
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      "body": "규제 필요하다는데 동감\n그리고 그 규제는 암호화폐 자체가 아니라 거래소를 향하는게 맞는것 같아",
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      "author": "wabangcute",
      "body": "반갑습니다~ 이벤트가 아니더라도 자주뵈어요^^",
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      "author": "ohbama",
      "body": "적년말에 AWS SAA 를 땄는데 기억이 새록새록 하네요 ㅎㅎ",
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      "author": "ohbama",
      "body": "오... 저도 다음에 참가하기위해 팔로우 하고 갑니다 ㅎㅎ",
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      "body": "환영합니다~",
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      "body": "![](https://steemitimages.com/DQmbj3o2fPyamNjPmHdFDgbuuNqreva3bEUqv1zqzUQoCiz/image.png)\n\n안녕하세요 오호바마 @ohbama 입니다.\n\nMIT Technology Review 를 매일 구독하고 있는데\n이를 정리 및 요약해서 포스팅합니다.\n조금 더 자세한 내용이나 시사점이 궁금하다면 코멘트에 요청해 주세요.\n\n오늘은 연초 대폭락장과 더불어 비트코인 시세 조작에 관련된 연구를 다룹니다.\n\n![](https://steemitimages.com/DQmQby1hFo7i23uBhWKFeeu31nJ1jRJpN8zC3gCHNjvpf4o/image.png)\n\n# 한 사람이 2013년 비트코인 시세를 1,000 달러로 조작 했을 가능성이 크다\n새로운 연구에 따르면 봇(bots)들이 비트코인 시세 조작을 위해 쓰였습니다.\n* **분석**: [화폐금융저널 (Journal of Monetary Economics)](https://www.sciencedirect.com/science/article/pii/S0304393217301666) 에서 올해 1월 2일에 발간된 연구는  2013년 당시 최대 가상화폐 거래소 였다가 파산한 마운트 곡스 (Mt. Gox)에서 어떻게 2개의 봇 (Markus 와 Willy 라 명명)이 수상한 거래를 하며 비트코인 시세에 영향을 주었는지 분석함.\n* **밝혀낸점**: 연구진은 이 두개의 봇의 수상한 거래가 단 2달만에 비트코인가격이 약 $150 에서 $1000으로 오르는데 매우 강한 상관관계 (연관성)이 있다고 밝힘.\n* **왜 문제인가?**: 연구진들은 마켓캡 또는 전체의 볼륨이 적은 신생 암호화폐의 거래에서 이와 유사한 방법으로 시세를 조작하는 문제가 있을수 있다고 경고한다. \n* 2013년 말 마운트곡스는 전체 비트코인 거래의 70% 이상을 처리하고 있었는데, 해킹으로 약 **650,000개의 비트코인**이 도난되면서 2014년 4월 파산함.\n* Markus 와 Willy가 총 약 **600,000개의 비트코인**을 사들였음. 각 봇이 정확히 250만 달러를 사용 하였으면 매집한 비트코인을 하나도 팔지 않았음. (현재 시세 약 12조원)\n* 수상한 거래가 이루어 졌을때, 미국달러-비트코인 (USD-BTC)의 가격은 평균 매일 4%씩 상승했고 거래 볼륨이 비정상적으로 팽창했음.\n* Markus는 평균 9,302의 비트코인, Willy는 평균 4,962개의 비트코인을 사들였음. 이는 각각 마운트곡스의 하루 거래 볼륨의 21%, 18%를 차지함.\n* 봇들의 활동이 멈추고 얼마 가지 않아 마운트 곡스 거래소의 파산과 함께 비트코인의 가격이 폭락했고, 가격이 다시 그 수준으로 올라오기까지 3년 이상 걸렸다.\n* 이렇게 봇들이 사들인 비트코인의 가격을 하나도 지불하지 않았을 수 있다. 예측되는 시나리오는 다음과 같다. 거래소의 특성상 사람들은 코인과 돈을 거래소에 예치 해 둔다.  만약 고객이 많은 양의 코인을 살 경우, 실제 코인을 지급하지 않고 거래소 상의 잔고에만 반영을 한다. (Willy could prop up the trading volume at Mt. Gox and “convert” consumer “bitcoin” balances to fiat money) 만약 현금을 인출 하려 한다면, 거래소의 규정을 이용해서 특정 기간 인출을 금지했다.\n\n![](https://steemitimages.com/DQmZm4vpecAHdsXy4EZBFcnLzdsGQio5KzCz4uF7vateFEf/image.png)\n\n**역주**:\n* 거래소에 대한 규제는 명백하게 필요한 것으로 보임. 거래소와 관련된 법이 없다면 거래소의 시세조작을 법적으로 방지 할 수가 없음. \n* 알트코인은 특히 조심을 해야 함. 거래량 및 마캣캡이 크지 않기 때문에,이더와 비트와 같은 대장들과 비교해서 훨씬 적은 돈으로 쉽게 시세를 조작 할 수 있음.\n* 블록체인 기술이 탈중앙화를 지향하며 그로 인해 기존의 기술들의 대체재로 논해지고 있는데, 그렇다고 해서 블록체인 기술을 활용한 암호화폐 (a.k.a 가상화페, 코인, 알트코인, 비트코인) 의 거래가 투명/공정/깨끗하게 이루어 지고 있다는건 정말 안일한 생각임.",
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      "author": "ohbama",
      "body": "안녕하세요 오호바마 @ohbama 입니다.\n\n[MIT Technology Review](https://www.technologyreview.com/newsletters/) 를 매일 구독하고 있는데\n이를 정리 및 요약해서 포스팅합니다.\n조금 더 자세한 내용이나 시사점이 궁금하다면 코멘트에  요청해 주세요.\n\n# 1. 인공지능이 독해 능력 시합에서 인간을 능가\n* NLP (Natural Language Processing) - 자연어처리 분야에서 기념비적인 날임\n* [알리바바](https://www.bloomberg.com/news/articles/2018-01-15/alibaba-s-ai-outgunned-humans-in-key-stanford-reading-test)와 마이크로소프트가 만든 AI 프로그램이 인간보다 독해 및 이해력 테스트에서 높은 점수를 받음\n* __테스트__: 미국 스탠포드 대학에서 만든 [SQuAD](https://rajpurkar.github.io/SQuAD-explorer/) 퀴즈는 위키피디아 아티클 500개에 기반하며, 시험은 단어와 문장의 이해를 테스트함\n* __점수__: 사람: 82.304 | 알리바바: 82.44 | 마이크로소프트: 82.650\n* __시사점__: \"영희는 철수에게 왜 화가 났을까?\" 와 같은 주관적인 질문들을 기계가 더 높은 정확도로 답변을 할 수 있다고 이해 할 수 있음\n* 삼성도 14위에 순위되어 있다?!\n![](https://steemitimages.com/DQmYWYEgSdpArCoo9q3Mm2Gc2i4aGarGy2YgyioR4tfdXaS/image.png) \n\n![](https://steemitimages.com/DQmY1PDXeTkdJGbcKMAKpCHVoGRp9x1x1f9YRkutNF8W2m3/image.png)\n\n# 2. 캐나다가 비트코인 채굴의 다음 천국이 될 수 있다\n* 낮은 기온과 싼 전력이 암호화폐 채굴자들을 유혹하고 있음\n* [코인데스트(CoinDesk)](https://www.coindesk.com/quebec-lures-cryptocurrency-miners-china-sours-industry/) 와 [로이터 (Reuters)](https://www.reuters.com/article/us-canada-bitcoin-china/chinese-bitcoin-miners-eye-sites-in-energy-rich-canada-idUSKBN1F10BU)에 따르면 중국 우지한의 비트메인 같은 암호화폐 채굴 회사들이 퀘백과 매니토바 같은 캐나다에 부지를 알아보고 있음\n* 비트코인 채굴 해쉬(능력)의 2/3이 중국에 있음. 하지만 [최근 중국 정부가 중국내에서 채굴을 금지 하고 있음](https://www.technologyreview.com/the-download/609913/china-has-more-plans-to-stamp-out-bitcoin/?utm_source=newsletters&utm_medium=email&utm_content=2018-01-15&utm_campaign=the_download)\n* __왜 캐나다?__: 비트코인 채굴은 엄청난 양의 열을 발생시킴. 그래서 차가운 기온이 이상적임. 또한 캐나다는 북미에서 전기 가격이 가장 싼 장소중에 하나\n\n# 3. GM에서 발표한 운전대가 없는 자동차\n* 이 차에는 운전대가 없다. [GM사는 내년이면 현재 쉐보레 볼트를 조금 수정해서 자율 주행이 가능 할 것이라고 본다](https://www.technologyreview.com/the-download/609971/this-is-what-your-dashboard-of-the-future-looks-like/?utm_source=newsletters&utm_medium=email&utm_content=2018-01-15&utm_campaign=the_download)\n![](https://steemitimages.com/DQmPfjZZK6WcuRoi2sYCzq8QzCHv9A9qW6Mt4bRxF3HR65n/image.png)\n\n# 4. 산업계에서 원하는 사람은 블록체인 전문가\n* [CNBC에 따르면 최근에는 산업계에서 모두 AI전문가를 찾았다면, 이제는 모두 블록체인 전문가를 찾고 있다](https://www.cnbc.com/2018/01/12/as-cryptocurrencies-flourish-employers-hunt-for-workers-with-blockchain-skills.html)\n* 그러니 현업에 계신 분들은 지금이라도 오픈 소스 코드를 들여다 보기를 추천함\n\n# 5. 이 AI 봇은 당신이 아픈걸 소리로 듣고 판단할수 있다\n*  [덴마크에서 911을 전화했을때 AI가 당신의 목소리, 주변 소리 등을 듣고 사람보다 더 정확하게 **심장마비**를 진단 가능](https://www.technologyreview.com/the-download/609969/ai-could-diagnose-your-heart-attack-on-the-phone-even-if-youre-not-the-caller/?utm_source=newsletters&utm_medium=email&utm_content=2018-01-15&utm_campaign=the_download)\n* 사람은 73%의 정확도, AI는 95%의 정확도\n\n# 6. 당신과 닮은 예술작품 찾기\n* [구글에서 발표한 얼굴 인식 어플리케이션은 당신의 얼굴과 닮은 예술 작품을 찾아 준다](https://sploid.gizmodo.com/google-can-now-tell-you-which-works-of-art-you-look-lik-1822074643)\n* 앱다운은 여기서 가능: [안드로이드](https://play.google.com/store/apps/details?id=com.google.android.apps.cultural&hl=en), [아이폰](https://itunes.apple.com/us/app/google-arts-culture/id1050970557?mt=8)\n![](https://steemitimages.com/DQmesD6ra4B5pKqBqb4yuX4EiMgZcKG1x3PaJmZnD6LWSV1/image.png)",
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      "author": "lovedj",
      "body": "생생정보 굿입니다. ㅎㅎ\n그리고 제 블로그에 댓글다신 제 아이 미국유학준비에 대한 어드바이스 감사드립니다.^^",
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      "author": "lovedj",
      "body": "생생정보 굿입니다. ㅎㅎ",
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      "author": "lovedj",
      "body": "충분히 공감가는 말씀입니다.\n참고해 보겠습니다.\n고맙습니다.",
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      "author": "lovedj",
      "body": "충분히 공감가는 말씀입니다.\n참고해 보겠습니다.",
      "json_metadata": "{\"tags\":[\"kr\"],\"app\":\"steemkr/0.1\"}",
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