AWS Marketplace: Bitcoin Fullnode - aws.amazon.com

Running a full node on Amazon AWS? /r/Bitcoin

Running a full node on Amazon AWS? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

List of 110+ Free Udemy & Popular Discounted : ETL & Data Integration Masterclass, HTML, JavaScript, & Bootstrap, Marketing Analytics, Microsoft Excel, Machine Learning, Android App Developer, React JS - A Complete Guide for Frontend Web Development, Python, Tableau, Instructional Design & Many More

ETL & Data Integration Masterclass, HTML, JavaScript, & Bootstrap, Marketing Analytics, Microsoft Excel, Machine Learning, Android App Developer, React JS - A Complete Guide for Frontend Web Development, Python, Tableau, Instructional Design & Many More
Source: Freebies Global - https://freebiesglobal.com/
  1. [English] 6h 24m HTML, JavaScript, & Bootstrap - Certification Course https://www.udemy.com/course/html-javascript-bootstrap-certification-course/?couponCode=YOUACCELOCT26 2 Days left at this price!
  2. [English] 0h 37m Quick Guide: Setup a Local Testing Server using WAMP or MAMP https://www.udemy.com/course/quick-guide-setup-a-local-testing-server-using-wamp-or-mamp/?couponCode=YOUACCELOCT26 2 Days left at this price!
  3. [English] 1h 27m Learn MySQL - For Beginners https://www.udemy.com/course/learn-mysql-for-beginners/?couponCode=YOUACCELOCT26 2 Days left at this price!
  4. [English] 1h 28m Learn JavaScript - For Beginners https://www.udemy.com/course/learn-javascript-for-beginners-v/?couponCode=YOUACCELOCT26 2 Days left at this price!
  5. [English] 1h 47m Learn PHP - For Beginners https://www.udemy.com/course/learn-php-for-beginners-n/?couponCode=YOUACCELOCT26 2 Days left at this price!
  6. [English] 5h 57m JavaScript, Bootstrap, & PHP - Certification for Beginners https://www.udemy.com/course/javascript-bootstrap-php-certification-for-beginners/?couponCode=YOUACCELOCT26 2 Days left at this price!
  7. [English] 2h 23m Learn XML-AJAX - For Beginners https://www.udemy.com/course/learn-xml-ajax-for-beginners/?couponCode=YOUACCELOCT26 2 Days left at this price!
  8. [English] 2h 45m Learn Bootstrap - For Beginners https://www.udemy.com/course/learn-bootstrap-for-beginners/?couponCode=YOUACCELOCT26 2 Days left at this price!
  9. [English] 1h 15m Learn jQuery - For Beginners https://www.udemy.com/course/learn-jquery-for-beginners/?couponCode=YOUACCELOCT26 2 Days left at this price!
  10. [English] 3h 9m CSS & JavaScript - Certification Course for Beginners https://www.udemy.com/course/css-javascript-certification-course-for-beginners/?couponCode=YOUACCELOCT26 2 Days left at this price!
  11. [English] 6h 2m Ultimate AWS Certified Alexa Skill Builder Specialty 2020 https://www.udemy.com/course/ultimate-aws-certified-alexa-skill-builder-specialty/?couponCode=20F2F1085B9FE981B09C 2 Days left at this price!
  12. [English] 9h 13m Pentaho for ETL & Data Integration Masterclass 2020- PDI 9.0 https://www.udemy.com/course/pentaho-for-etl-data-integration-masterclass/?couponCode=OCTXXVI20 1 Day left at this price!
  13. [English] 34h 56m Machine Learning & Deep Learning in Python & R https://www.udemy.com/course/data_science_a_to_z/?couponCode=OCTXXVI20 1 Day left at this price!
  14. [English] 0h 52m Public Speaking: A tactical approach https://www.udemy.com/course/publicspeakingtactics/?couponCode=9546D2A90B72DB31BF85 2 Days left at this price!
  15. [Spanish] 8h 22m Introducción a Adobe Photoshop CC 2020 (Actualizado) https://www.udemy.com/course/introduccion-a-adobe-photoshop-cc-2020-actualizado/?couponCode=GRATIS-CAPDESIS 2 Days left at this price!
  16. [English] 3h 36m The Complete React JS Course - Basics to Advanced https://www.udemy.com/course/react-js-basics-to-advanced/?couponCode=FREEOCTOBER 2 Days left at this price!
  17. [English] 0h 48m Develop Your Listening Skills to Shine at Work and in Life https://www.udemy.com/course/develop-your-listening-skills-to-shine-at-work-and-in-life/?couponCode=86E39195E8A8084CE232 1 Day left at this price!
  18. [Spanish] 11h 40m Curso Excel y Power BI – Análisis y Visualización de Datos https://www.udemy.com/course/curso-tutorial-aprender-como-usar-power-bi-excel-ejercicios-practicos/?couponCode=OCT20-1 2 Days left at this price!
  19. [English] 1h 28m Learn! Modern JavaScript for React JS - ES6 https://www.udemy.com/course/modern-javascript-es6-for-react-js/?couponCode=FREEOCTOBER 2 Days left at this price!
  20. [English] 2h 5m The Obvious Secrets To Success No One Knows https://www.udemy.com/course/success-secrets-coach/?couponCode=TOSTSNEXPOCT292020 2 Days left at this price!
  21. [English] 2h 21m EQ-2 Resilience and Mental Strength - Emotional Intelligence https://www.udemy.com/course/resiliance-emotional-intelligence/?couponCode=EQRMSEXPOCT292020 2 Days left at this price!
  22. [English] 5h 37m Marketing Analytics: Pricing Strategies and Price Analytics https://www.udemy.com/course/marketing-analytics-pricing-strategies-and-price-analytics/?couponCode=OCTXXVI20 1 Day left at this price!
  23. [German ] 2h 52m Werde ein Menschen-Magnet - Die Charisma-Formel https://www.udemy.com/course/werde-ein-menschen-magnet-die-charisma-formel/?couponCode=CHARISTART 2 Days left at this price!
  24. [English] 12h 46m Complete Machine Learning with R Studio - ML for 2020 https://www.udemy.com/course/machine-learning-with-r-studio/?couponCode=OCTXXVI20 1 Day left at this price!
  25. [English] 7h 7m Marketing Analytics: Forecasting Models with Excel https://www.udemy.com/course/marketing-analytics-forecasting-models-with-excel/?couponCode=OCTXXVI20 1 Day left at this price!
  26. [English] 7h 57m Learn! Python from scratch - Basics to Advanced https://www.udemy.com/course/python-programming-beginner-to-advanced/?couponCode=FREEOCTOBER 2 Days left at this price!
  27. [English] 2h 30m Youtube & Instagram Video Production + Editing Bootcamp 2020 https://www.udemy.com/course/youtube-video-production-bootcamp-2018/?couponCode=PUMPKIN 2 Days left at this price!
  28. [English] 0h 32m GDPR and Data Protection Compliance for Beginners https://www.udemy.com/course/gdpr-and-data-protection-compliance-for-beginners/?couponCode=GDPRFREE 2 Days left at this price!
  29. [English] 1h 57m Machine learning & AI Hands on 3 Projects. https://www.udemy.com/course/machine-learning-and-ai-with-hands-on-projects/?couponCode=FREEOCTOBER 2 Days left at this price!
  30. [English] 6h 49m Machine Learning - Step by Step (2020) https://www.udemy.com/course/step-by-step-guide-to-machine-learning-course/?couponCode=FREEOCTOBER 2 Days left at this price!
  31. [English] 4h 7m Step by step guide to be an Android App Developer https://www.udemy.com/course/a-beginners-guide-to-android-app-development/?couponCode=FREEOCTOBER 2 Days left at this price!
  32. [English] 3h 32m HTML5 - Basics to Advanced with hands-on projects. https://www.udemy.com/course/html-basic-to-advanced/?couponCode=FREEOCTOBER 2 Days left at this price!
  33. [English] 9h 59m Step by Step Guide for Javascript - Basics to Advanced https://www.udemy.com/course/javascript-basics-to-advanced/?couponCode=FREEOCTOBER 2 Days left at this price!
  34. [English] 21h 57m React JS - A Complete Guide for Frontend Web Development https://www.udemy.com/course/react-js-a-complete-guide-for-frontend-web-development/?couponCode=FREEOCTOBER 2 Days left at this price!
  35. [English] 2h 36m EMDR Therapy For PTSD Post Traumatic Stress Disorder https://www.udemy.com/course/certificate-in-ptsd-symptom-relief-through-emdr-therapy/?couponCode=1CE6BA95EB2043A8612C 2 Days left at this price!
  36. [English] 2h 21m Unblock Chakras, Cleanse Aura, Chromotherapy Color Therapy https://www.udemy.com/course/color-therapy-certification-improve-your-life-through-colo?couponCode=81E73256860229CAAF0E 2 Days left at this price!
  37. [English] 2h 59m How To Declutter Your Home With Before After Video Included https://www.udemy.com/course/declutter-and-organize-for-better-home-and-less-stress/?couponCode=B73EF8EC273534ED7BC4 2 Days left at this price!
  38. [English] 1h 14m Nursing Professionals Get Motivated! Motivation For Nurses https://www.udemy.com/course/motivation-for-nurses-30-days-of-praise-for-nurses/?couponCode=334FEE6E04DCBEF2182D 2 Days left at this price!
  39. [English] 1h 12m Canva T-Shirt Design Course Create Stunning Graphics Today! https://www.udemy.com/course/canva-t-shirt-design-course-create-stunning-graphics-today/?couponCode=CHRISTMAS_CAME_EARLY 2 Days left at this price!
  40. [English] 0h 31m Fundamentals of Network Security https://www.udemy.com/course/fundamentals-of-network-security-b/?couponCode=HARISH_INDIA 2 Days left at this price!
  41. [English] 1h 14m Sell Photo Online: Beginners Guide Stock Photography https://www.udemy.com/course/mastering-stock-photography-step-by-step-guideline/?couponCode=STOCKOCT2020F3 2 Days left at this price!
  42. [English] 6h 5m Tableau 2020 Training for Data Science & Business Analytics https://www.udemy.com/course/tableau-for-data-science-and-business-analytics/?couponCode=FB27OCT2020 2 Days left at this price!
  43. [English] 11h 46m Futures Trading Ninja: DIY 12Hour TOP-NOTCH Trading Strategy https://www.udemy.com/course/futures-trading/?couponCode=1OCT20 2 Days left at this price!
  44. [Spanish] 5h 35m Google Adsense. 99 Secretos que Internet No te Enseña. 2020. https://www.udemy.com/course/google-adsense-gana-dinero-achirou-alvaro-chirou-pablo-munoz/?couponCode=TWITCH 2 Days left at this price!
  45. [English] 7h 0m CNN for Computer Vision with Keras and TensorFlow in Python https://www.udemy.com/course/cnn-for-computer-vision-with-keras-and-tensorflow-in-python/?couponCode=OCTXXVI20 1 Day left at this price!
  46. [English] 6h 29m HR Analytics Course with R https://www.udemy.com/course/hr-analytics-course-with-?couponCode=ANALYTICS27 2 Days left at this price!
  47. [English] 6h 59m Instructional Design Course: All Levels Beginner to Advanced https://www.udemy.com/course/instructional-design-course/?couponCode=DESIGN27 2 Days left at this price!
  48. [English] 0h 58m Motion Graphics: Make Liquid Motion Effects in After Effects https://www.udemy.com/course/motion-graphics-liquid-motion-effects-in-after-effects/?couponCode=UD1FREE201026 1 Day left at this price!
  49. [English] 4h 31m Learn Excel from beginner to advance with Example https://www.udemy.com/course/learn-excel-from-beginner-to-advance-with-example/?couponCode=FREE50 2 Days left at this price!
  50. [English] 1h 39m Mastering Deno.js: Beginner to Expert [2020] https://www.udemy.com/course/mastering-denojs-beginner-to-expert/?couponCode=OCTOBERSALE 1 Day left at this price!
  51. [English] 0h 41m Public Speaking for Beginners https://www.udemy.com/course/public-speaking-for-beginners-al/?couponCode=2979E8D97444605D7156 2 Days left at this price!
  52. [English] 0h 58m Presentation Skills: Give a Great New Business Pitch https://www.udemy.com/course/how-to-give-a-new-business-pitch-presentation/?couponCode=74EFB7D6C2FB1A0D9B1E 2 Days left at this price!
  53. [English] 0h 51m Journalism: Conduct Great Media Interviews https://www.udemy.com/course/how-to-conduct-interviews/?couponCode=C84C17A28AE58CBD454E 2 Days left at this price!
  54. [English] 1h 7m Sales Skills Training: Give a Winning Sales Presentation https://www.udemy.com/course/how-to-give-a-sales-presentation/?couponCode=60C26DD7117AF1729851 2 Days left at this price!
  55. [English] 1h 40m Public Speaking: You Can Give Great Financial Presentations https://www.udemy.com/course/how-to-give-financial-presentations/?couponCode=2CDEE253D2739633312E 2 Days left at this price!
  56. [English] 2h 59 The Complete Motivation Course: Motivation for Your Success https://www.udemy.com/course/the-complete-motivation-course-motivation-for-your-success/?couponCode=9960F956CB6AA19CF809 2 Days left at this price!
  57. [English] 1h 24m The Complete Google Forms Course - Sending & Analyzing Forms https://www.udemy.com/course/the-complete-google-forms-course-sending-analyzing-forms/?couponCode=2076C8A7ADCBD6DBDE99 2 Days left at this price!
  58. [English] 4h 54m Master Django by Building Complete RESTful API Project https://www.udemy.com/course/master-django-by-building-complete-restful-api-project/?couponCode=OCTOBERSALE 1 Day left at this price!
  59. [English] 9h 18m Complete Adobe Premiere Pro CC Course - Beginner to Advanced https://www.udemy.com/course/adobepremiereprocccourse/?couponCode=FREEADOBE 2 Days left at this price!
  60. [Spanish] 1h 18m Comienza con R ¡Añade valor a tu CV en 2 horas! https://www.udemy.com/course/el-arte-de-programar-en-r-anade-valor-a-tu-cv/?couponCode=B90E90DE425C8BAC6D10 2 Days left at this price!
  61. [Spanish] 1h 15m Aprende SQL desde cero: ¡Curso con mas de 50 ejercicios! 1 https://www.udemy.com/course/aprende-sql-desde-cero-curso-con-mas-de-50-ejercicios/?couponCode=9497A0979D086BC59ACA 2 Days left at this price!
  62. [Spanish] 1h 41m Tableau: Crea un impacto con la información https://www.udemy.com/course/tableau-10-desde-cero/?couponCode=0B9A15DAABECEF4283E3 2 Days left at this price!
  63. [Spanish] 1h 4m Microsoft Excel - Análisis de datos con tablas dinámicas https://www.udemy.com/course/microsoft-excel-analisis-de-datos-con-tablas-dinamicas/?couponCode=E132A1381313060EADBA 2 Days left at this price!
  64. [Spanish] 1h 47m SQL: Creación de Bases de Datos (De cero a profesional) https://www.udemy.com/course/sql-creacion-de-bd/?couponCode=4C2909E4D310F1B4FA41 2 Days left at this price!
  65. [Arabic] 0h 43m YouTube SEO mini course (Get more views) in Arabic https://www.udemy.com/course/youtube-seo-mini-course/?couponCode=B9CB7555A84C81E259A6 2 Days left at this price!
  66. [English] 4h 48m Microsoft Excel - Learn MS EXCEL For DATA Analysis https://www.udemy.com/course/microsoft-excel-learn-ms-excel-for-data-analysis/?couponCode=23966F2BE2A43C33E5ED 2 Days left at this price!
  67. [English] 0h 33m 30 Days Challenge for a Better Time Management https://www.udemy.com/course/30-days-challenge-for-a-better-time-management/?couponCode=TMFREE 2 Days left at this price!
  68. [English] 2h 15m Outsource Mastery: How To Earn More Money By Doing Less Work https://www.udemy.com/course/outsource-mastery/?couponCode=OCTFREEOUTSOURCE 2 Days left at this price!
  69. [English] 4h 44m Microsoft Excel: Beginner to Data Analysis and Dashboards https://www.udemy.com/course/getting-started-with-microsoft-excel/?couponCode=4471C851C1F635EA50B6 2 Days left at this price!
  70. [English] 1h 55m Machine Learning & Data Science Foundations Masterclass https://www.udemy.com/course/machine-learning-data-science-foundations-masterclass/?couponCode=CLUB11 2 Days left at this price!
  71. [English] 1h 26m Public Speaking: You Can Speak to Large Audiences https://www.udemy.com/course/how-to-speak-to-large-audiences/?couponCode=D862393E365C81A88F76 2 Days left at this price!
  72. [English] 1h 12m Online Course Creation: Complete Course of Blunders to Avoid https://www.udemy.com/course/online-course-creation-complete-course-of-blunders-to-avoid/?couponCode=795DDC3D62699701AA68 2 Days left at this price!
  73. [English] 1h 0m Basics Of Stop Motion Animation Using Canva And OpenShot https://www.udemy.com/course/basics-of-stop-motion-animation-using-canva-and-openshot/?couponCode=87D29D78BE69CC4A77E6 2 Days left at this price!
  74. [English] 1h 23m Basics Of Flat Design Illustrations In Canva https://www.udemy.com/course/how-to-do-flat-design-for-social-media-marketing-in-canva/?couponCode=7C34A04E50CDC001F0FB 2 Days left at this price!
  75. [English] 1h 6m TEDx for NGOs, NonProfits & Volunteers https://www.udemy.com/course/tedx-nonprofit-org/?couponCode=TNNPVEXPOCT292020 2 Days left at this price!
  76. [English] 0h 49m Color Theory Basics: Learning Color Theory With Adobe Color https://www.udemy.com/course/color-theory-basics-learning-color-theory-with-adobe-colo?couponCode=6950A9D3ED98C8948A02 2 Days left at this price!
  77. [English] 3h 37m Intro To Basic Video Creation https://www.udemy.com/course/intro-to-basic-video-creation/?couponCode=2A0546CA0E43EEF9DFEC 2 Days left at this price!
  78. [English] 3h 19m Photo Editing With Free Software https://www.udemy.com/course/photo-editing-with-free-software/?couponCode=6A1829B7BD9A5CD55E4F 2 Days left at this price!
  79. [English] 2h 19m Introduction To The Basics Of Melt & Pour Soap https://www.udemy.com/course/introduction-to-the-basics-of-melt-pour-soap/?couponCode=1A40DBD5832B6B268670 2 Days left at this price!
  80. [English] 0h 57m Analyzing Self Storage Businesses for Maximum Profit https://www.udemy.com/course/self-storage-business/?couponCode=ASBMPEXPOCT292020 2 Days left at this price!
  81. [English] 1h 35m Affiliate Marketing Mastery (2021) - Beginner To Advanced https://www.udemy.com/course/affiliate-marketing-mastery-2021-beginner-to-advanced/?couponCode=MANISHMEHTA 2 Days left at this price!
  82. [English] 2h 59m Complete SQL Bootcamp with MySQL, PHP & Python https://www.udemy.com/course/complete-sql-bootcamp-with-mysql-php-python/?couponCode=SQLBOOTOCT2020F3 1 Day left at this price!
  83. [English] 0h 52m Data Analytics with Excel PivotTables https://www.udemy.com/course/data-analytics-with-excel-pivottables-2016/?couponCode=45D4278FB61058D3D9E4 1 Day left at this price!
  84. [English] 0h 52m Understanding HIPAA Compliance https://www.udemy.com/course/understanding-hipaa-compliance/?couponCode=B3F4C350DD6FB06C1225 1 Day left at this price!
  85. [English] 0h 34m Time Management for Professionals https://www.udemy.com/course/time-management-for-professionals/?couponCode=7E69781A8998EA9C8309 1 Day left at this price!
  86. [English] 9h 39m How to Write and Publish a Research Paper: Complete Guide https://www.udemy.com/course/how-to-write-and-publish-a-research-paper-complete-guide/?couponCode=PAPER26 1 Day left at this price!
  87. [English] 4h 45m Grant Writing Full Course: Nonprofits, Artists & Freelancers https://www.udemy.com/course/grant-writing-course/?couponCode=GRANT26 1 Day left at this price!
  88. [English] 7h 8m Big Data on Amazon web services (AWS) https://www.udemy.com/course/big-data-on-amazon-web-services-aws-cloud-2018/?couponCode=BE8474FF563682A467C7 1 Day left at this price!
  89. [English] 2h 36m C Programming For Beginners -Build Bank ATM Machine Software https://www.udemy.com/course/c-programming-for-beginners-with-real-world-examples/?couponCode=19D2D84BB2687DF326BB 21 hrs left at this price!
  90. [English] 2h 42m SQL Injections Unlocked - SQLi Web Attacks https://www.udemy.com/course/sql-injections-unlocked-sqli-web-attacks/?couponCode=FOR-MY-HACKMATES 18 hrs left at this price!
  91. [English] 7h 4m Build 9 PIC Microcontroller Engineering projects today! https://www.udemy.com/course/pic-microcontroller-build-engineering-projects-today/?couponCode=STAYHOME1022020 21 hrs left at this price!
  92. [English] 1h 2m Arduino: Everything you need to Know https://www.udemy.com/course/arduino-for-newbies-crash-course/?couponCode=STAYHOME1022020 21 hrs left at this price!
  93. [English] 4h 24m The Complete Raspberry Pi Bootcamp https://www.udemy.com/course/raspberry-pi-complete-raspberrypi-bootcamp-python-raspberry-pi/?couponCode=STAYHOME1022020 21 hrs left at this price!
  94. [English] 0h 44m Arduino meets Python: Step by Step https://www.udemy.com/course/arduino-python-control-py-code-arduino-using-python-pip/?couponCode=STAYHOME1022020 21 hrs left at this price!
  95. [English] 1h 37m Sensors: Everything You Need To Know https://www.udemy.com/course/sensors-interfacing-sensor-wiring-sensor-temperature-humidity-sensors/?couponCode=STAYHOME1022020 21 hrs left at this price!
  96. [English] 1h 22m Arduino SMS Sending Motion Detector using Python https://www.udemy.com/course/arduino-sms-sending-motion-detector-using-python/?couponCode=STAYHOME1022020 21 hrs left at this price!
  97. [English] 2h 15m PIC Microcontrollers Timer and Watchdog Timer https://www.udemy.com/course/pic-microcontrollers-timer0-watchdog-timer-advance-picmicrocontrolle?couponCode=STAYHOME1022020 21 hrs left at this price!
  98. [English] 3h 47m Adobe Photoshop CC- Basic Photoshop training https://www.udemy.com/course/adobe-photoshop-cc-basic-photoshop-training/?couponCode=0210CF7D2FCCC0923A73 1 Day left at this price!
  99. [English] 0h 59m How to Make Passive Income With Bitcoin Lending https://www.udemy.com/course/how-to-make-passive-income-with-bitcoin-lending/?couponCode=OCTTHW2020 1 Day left at this price!
  100. [English] 6h 35m YouTube 2020 Million+ Views: Increase Profits, Subs & Rank https://www.udemy.com/course/youtubehacks/?couponCode=FREEPASS0000 1 Day left at this price!
  101. [English] 1h 19m Gain Love Relationship Skills Life Coaching Course https://www.udemy.com/course/get-a-relationship-life-coaching-love-relationship-building/?couponCode=8488CEF063E042E4BD80 1 Day left at this price!
  102. [English] 4h 11m NodeJS for Absolute Beginners https://www.udemy.com/course/nodejs-for-absolute-beginners/?couponCode=E6BFBDF8BB87E36F792E 1 Day left at this price!
  103. [English] 2h 1m Educación Emocional para niños de 3 a 5 años https://www.udemy.com/course/educacion-emocional-para-ninos-de-3-a-5-anos/?couponCode=142522ECD9028DE90A66 1 Day left at this price!
  104. [Spanish] 0h 35m Sistema para Hotel con php y Mysql (2020) https://www.udemy.com/course/sistema-para-hotel-con-php-y-mysql-2020-a/?couponCode=ECFE213D6989C53B2971 1 Day left at this price!
  105. [English] 2h 10m Master the Art of CV Building, Cover Letter & Job Interview https://www.udemy.com/course/master-job-landing/?couponCode=I-TRULY-CARE 1 Day left at this price!
  106. [English] 7h 38m Accounting, Bookkeeping & Financial Statements: Zero to Pro https://www.udemy.com/course/accounting-for-entrepreneurs/?couponCode=3B3CFB3F58EF8A38BF7D 1 Day left at this price!
  107. [English] 4h 40m Facebook Ads - from Beginner to Pro https://www.udemy.com/course/facebook-advertisement-from-beginners-to-pro/?couponCode=FACEBOOK-ADS-FREE 19 hrs left at this price!
  108. [English] 9h 27m Python 3: From ZERO to GUI programming https://freebiesglobal.com/python-3-from-zero-to-gui-programming 18 hrs left at this price!
  109. [English] 4h 27m Vedic Math & Mental Math - MULTIPLICATION : Full Course https://www.udemy.com/course/vedic-math-mental-math-multiplication-full-course/?couponCode=F9BAC66EEF2DD829D3B5 1 Day left at this price!
  110. [English] 1h 18m Learn 23 Ways to Make Money Online with Your Smartphone! https://www.udemy.com/course/make-money-with-your-smartphone/?couponCode=9D54EE1B421C3B3AB3FB 1 Day left at this price!
  111. [English] 1h 0m The Smartphone Product Photography Course https://www.udemy.com/course/the-smartphone-product-photography-course/?couponCode=CA54DC4D6967F6BC73F9 1 Day left at this price!
  112. [English] 2h 47m The complete forex course from scratch to professional https://www.udemy.com/course/the-complete-forex-course-from-scratch-to-professional/?couponCode=78C5F0F6865B3E555A0C 1 Day left at this price!
  113. [English] 4h 42m Watercolor Painting Next Level Techniques and Effects https://www.udemy.com/course/watercolor-painting-next-level-techniques-effects/?couponCode=FREEWATERCOLORCOURSE 1 Day left at this price!
  114. [English] 4h 19m Python Learn by Python Projects & Python Quizzes in 2020 https://www.udemy.com/course/the-complete-python-for-beginner-master-python-from-scratch/?couponCode=00F0142C2B69AE9804EA 1 Day left at this price!
  115. [English] 5h 35m Excel Basics [2020] + Advanced in Ms Excel 2019 & Office 365 https://freebiesglobal.com/excel-basics-2020-advanced-in-ms-excel-2019-office-365 1 Day left at this price!
  116. [English] 10h 39m Lead Generation MASTERY with Facebook Lead & Messenger Ads https://www.udemy.com/course/facebook-lead-ads-course/?couponCode=LEADADS111 1 Day left at this price!
Popular & Best Udemy Courses from $9.99
  1. [English] 32h 33m Master JavaScript – The Most Compete JavaScript Course 2020 $11.99 https://www.udemy.com/course/master-javascript-the-most-compete-javascript-course-2020/?couponCode=LEARNOCT 3 Days left at this price!
  2. [English] 7h 53m Introduction to Cloud Computing on Amazon AWS for Beginners $9.99 https://www.udemy.com/course/introduction-to-cloud-computing-on-amazon-aws-for-beginners/?couponCode=AWSOCT 4 Days left at this price!
  3. [English] AWS Certified Cloud Practitioner 500 Practice Exam Questions $9.99 https://www.udemy.com/course/aws-certified-cloud-practitioner-practice-exams-c/?couponCode=AWSOCT 4 Days left at this price!
  4. [English] 34h 0m The Complete Train the Trainer Bootcamp - Beginners-Advanced $12.99 https://www.udemy.com/course/the-complete-train-the-trainer-bootcamp-beginners-advanced/?couponCode=THANKS1 3 Days left at this price!
  5. [English] 26h 49m Leading Effective Meetings - You Can Lead Effective Meetings $12.99 https://www.udemy.com/course/leading-effective-meetings-you-can-lead-effective-meetings/?couponCode=THANKS2 3 Days left at this price!
  6. [English] 44h 40m SEO TRAINING 2021: Complete SEO Course + WordPress SEO Yoast $10.99 https://www.udemy.com/course/online-seo-training/?couponCode=2OCT999 4 Days left at this price!
  7. [English] 8h 9m Facebook Dynamic Ads (Facebook Dynamic Retargeting) MASTERY $9.99 https://www.udemy.com/course/facebook-dynamic-ads/?couponCode=OCT999 4 Days left at this price!
  8. [English] 56h 8m The Complete Digital Marketing Course for Local Businesses $9.99 https://www.udemy.com/course/local-digital-marketing/?couponCode=2OCT999 4 Days left at this price!
  9. [English] 29h 1m BEST of Facebook Ads: Facebook Ads 2021 ULTIMATE PRO Edition $13.99 https://www.udemy.com/course/facebook-ads-2021/?couponCode=OCT999 4 Days left at this price!
  10. [English] 39h 52m BEST of SEO: #1 SEO Training & Content Marketing Course 2021 $9.99 https://www.udemy.com/course/seo-training-2021/?couponCode=2OCT999 4 Days left at this price!
  11. [English] AWS Certified Developer Associate Practice Exam Questions $9.99 https://www.udemy.com/course/aws-developer-associate-practice-exams/?couponCode=AWSOCT 2 Days left at this price!
  12. [English] 29h 21m AWS Certified Developer Associate Exam Training 2020 [NEW] $9.99 https://www.udemy.com/course/aws-certified-developer-associate-exam-training/?couponCode=AWSOCT 2 Days left at this price!
  13. [English] 31h 16m The Agile Methodology for Project Risk Managers $12.99 https://www.udemy.com/course/the-agile-methodology-for-project-risk-managers/?couponCode=LEARN2020OCT 3 Days left at this price!
  14. [English] 37h 7m Risk Management for Business Analysts (PMI-RMP/IIBA-ECBA) $12.99 https://www.udemy.com/course/risk-management-for-business-analysts-pmi-rmpiiba-ecba/?couponCode=LEARN2020OCT 3 Days left at this price!
  15. [English] 42h 20m Project Management Professional Certification Program (PMP) $12.99 https://www.udemy.com/course/project-management-professional-certification-program-pmp/?couponCode=LEARN2020OCT 4 Days left at this price!
submitted by ViralMedia007 to FREECoursesEveryday [link] [comments]

Dragonchain Great Reddit Scaling Bake-Off Public Proposal

Dragonchain Great Reddit Scaling Bake-Off Public Proposal

Dragonchain Public Proposal TL;DR:

Dragonchain has demonstrated twice Reddit’s entire total daily volume (votes, comments, and posts per Reddit 2019 Year in Review) in a 24-hour demo on an operational network. Every single transaction on Dragonchain is decentralized immediately through 5 levels of Dragon Net, and then secured with combined proof on Bitcoin, Ethereum, Ethereum Classic, and Binance Chain, via Interchain. At the time, in January 2020, the entire cost of the demo was approximately $25K on a single system (transaction fees locked at $0.0001/txn). With current fees (lowest fee $0.0000025/txn), this would cost as little as $625.
Watch Joe walk through the entire proposal and answer questions on YouTube.
This proposal is also available on the Dragonchain blog.

Hello Reddit and Ethereum community!

I’m Joe Roets, Founder & CEO of Dragonchain. When the team and I first heard about The Great Reddit Scaling Bake-Off we were intrigued. We believe we have the solutions Reddit seeks for its community points system and we have them at scale.
For your consideration, we have submitted our proposal below. The team at Dragonchain and I welcome and look forward to your technical questions, philosophical feedback, and fair criticism, to build a scaling solution for Reddit that will empower its users. Because our architecture is unlike other blockchain platforms out there today, we expect to receive many questions while people try to grasp our project. I will answer all questions here in this thread on Reddit, and I've answered some questions in the stream on YouTube.
We have seen good discussions so far in the competition. We hope that Reddit’s scaling solution will emerge from The Great Reddit Scaling Bake-Off and that Reddit will have great success with the implementation.

Executive summary

Dragonchain is a robust open source hybrid blockchain platform that has proven to withstand the passing of time since our inception in 2014. We have continued to evolve to harness the scalability of private nodes, yet take full advantage of the security of public decentralized networks, like Ethereum. We have a live, operational, and fully functional Interchain network integrating Bitcoin, Ethereum, Ethereum Classic, and ~700 independent Dragonchain nodes. Every transaction is secured to Ethereum, Bitcoin, and Ethereum Classic. Transactions are immediately usable on chain, and the first decentralization is seen within 20 seconds on Dragon Net. Security increases further to public networks ETH, BTC, and ETC within 10 minutes to 2 hours. Smart contracts can be written in any executable language, offering full freedom to existing developers. We invite any developer to watch the demo, play with our SDK’s, review open source code, and to help us move forward. Dragonchain specializes in scalable loyalty & rewards solutions and has built a decentralized social network on chain, with very affordable transaction costs. This experience can be combined with the insights Reddit and the Ethereum community have gained in the past couple of months to roll out the solution at a rapid pace.

Response and PoC

In The Great Reddit Scaling Bake-Off post, Reddit has asked for a series of demonstrations, requirements, and other considerations. In this section, we will attempt to answer all of these requests.

Live Demo

A live proof of concept showing hundreds of thousands of transactions
On Jan 7, 2020, Dragonchain hosted a 24-hour live demonstration during which a quarter of a billion (250 million+) transactions executed fully on an operational network. Every single transaction on Dragonchain is decentralized immediately through 5 levels of Dragon Net, and then secured with combined proof on Bitcoin, Ethereum, Ethereum Classic, and Binance Chain, via Interchain. This means that every single transaction is secured by, and traceable to these networks. An attack on this system would require a simultaneous attack on all of the Interchained networks.
24 hours in 4 minutes (YouTube):
24 hours in 4 minutes
The demonstration was of a single business system, and any user is able to scale this further, by running multiple systems simultaneously. Our goals for the event were to demonstrate a consistent capacity greater than that of Visa over an extended time period.
Tooling to reproduce our demo is available here:
https://github.com/dragonchain/spirit-bomb

Source Code

Source code (for on & off-chain components as well tooling used for the PoC). The source code does not have to be shared publicly, but if Reddit decides to use a particular solution it will need to be shared with Reddit at some point.

Scaling

How it works & scales

Architectural Scaling

Dragonchain’s architecture attacks the scalability issue from multiple angles. Dragonchain is a hybrid blockchain platform, wherein every transaction is protected on a business node to the requirements of that business or purpose. A business node may be held completely private or may be exposed or replicated to any level of exposure desired.
Every node has its own blockchain and is independently scalable. Dragonchain established Context Based Verification as its consensus model. Every transaction is immediately usable on a trust basis, and in time is provable to an increasing level of decentralized consensus. A transaction will have a level of decentralization to independently owned and deployed Dragonchain nodes (~700 nodes) within seconds, and full decentralization to BTC and ETH within minutes or hours. Level 5 nodes (Interchain nodes) function to secure all transactions to public or otherwise external chains such as Bitcoin and Ethereum. These nodes scale the system by aggregating multiple blocks into a single Interchain transaction on a cadence. This timing is configurable based upon average fees for each respective chain. For detailed information about Dragonchain’s architecture, and Context Based Verification, please refer to the Dragonchain Architecture Document.

Economic Scaling

An interesting feature of Dragonchain’s network consensus is its economics and scarcity model. Since Dragon Net nodes (L2-L4) are independent staking nodes, deployment to cloud platforms would allow any of these nodes to scale to take on a large percentage of the verification work. This is great for scalability, but not good for the economy, because there is no scarcity, and pricing would develop a downward spiral and result in fewer verification nodes. For this reason, Dragonchain uses TIME as scarcity.
TIME is calculated as the number of Dragons held, multiplied by the number of days held. TIME influences the user’s access to features within the Dragonchain ecosystem. It takes into account both the Dragon balance and length of time each Dragon is held. TIME is staked by users against every verification node and dictates how much of the transaction fees are awarded to each participating node for every block.
TIME also dictates the transaction fee itself for the business node. TIME is staked against a business node to set a deterministic transaction fee level (see transaction fee table below in Cost section). This is very interesting in a discussion about scaling because it guarantees independence for business implementation. No matter how much traffic appears on the entire network, a business is guaranteed to not see an increased transaction fee rate.

Scaled Deployment

Dragonchain uses Docker and Kubernetes to allow the use of best practices traditional system scaling. Dragonchain offers managed nodes with an easy to use web based console interface. The user may also deploy a Dragonchain node within their own datacenter or favorite cloud platform. Users have deployed Dragonchain nodes on-prem on Amazon AWS, Google Cloud, MS Azure, and other hosting platforms around the world. Any executable code, anything you can write, can be written into a smart contract. This flexibility is what allows us to say that developers with no blockchain experience can use any code language to access the benefits of blockchain. Customers have used NodeJS, Python, Java, and even BASH shell script to write smart contracts on Dragonchain.
With Docker containers, we achieve better separation of concerns, faster deployment, higher reliability, and lower response times.
We chose Kubernetes for its self-healing features, ability to run multiple services on one server, and its large and thriving development community. It is resilient, scalable, and automated. OpenFaaS allows us to package smart contracts as Docker images for easy deployment.
Contract deployment time is now bounded only by the size of the Docker image being deployed but remains fast even for reasonably large images. We also take advantage of Docker’s flexibility and its ability to support any language that can run on x86 architecture. Any image, public or private, can be run as a smart contract using Dragonchain.

Flexibility in Scaling

Dragonchain’s architecture considers interoperability and integration as key features. From inception, we had a goal to increase adoption via integration with real business use cases and traditional systems.
We envision the ability for Reddit, in the future, to be able to integrate alternate content storage platforms or other financial services along with the token.
  • LBRY - To allow users to deploy content natively to LBRY
  • MakerDAO to allow users to lend small amounts backed by their Reddit community points.
  • STORJ/SIA to allow decentralized on chain storage of portions of content. These integrations or any other are relatively easy to integrate on Dragonchain with an Interchain implementation.

Cost

Cost estimates (on-chain and off-chain) For the purpose of this proposal, we assume that all transactions are on chain (posts, replies, and votes).
On the Dragonchain network, transaction costs are deterministic/predictable. By staking TIME on the business node (as described above) Reddit can reduce transaction costs to as low as $0.0000025 per transaction.
Dragonchain Fees Table

Getting Started

How to run it
Building on Dragonchain is simple and requires no blockchain experience. Spin up a business node (L1) in our managed environment (AWS), run it in your own cloud environment, or on-prem in your own datacenter. Clear documentation will walk you through the steps of spinning up your first Dragonchain Level 1 Business node.
Getting started is easy...
  1. Download Dragonchain’s dctl
  2. Input three commands into a terminal
  3. Build an image
  4. Run it
More information can be found in our Get started documents.

Architecture
Dragonchain is an open source hybrid platform. Through Dragon Net, each chain combines the power of a public blockchain (like Ethereum) with the privacy of a private blockchain.
Dragonchain organizes its network into five separate levels. A Level 1, or business node, is a totally private blockchain only accessible through the use of public/private keypairs. All business logic, including smart contracts, can be executed on this node directly and added to the chain.
After creating a block, the Level 1 business node broadcasts a version stripped of sensitive private data to Dragon Net. Three Level 2 Validating nodes validate the transaction based on guidelines determined from the business. A Level 3 Diversity node checks that the level 2 nodes are from a diverse array of locations. A Level 4 Notary node, hosted by a KYC partner, then signs the validation record received from the Level 3 node. The transaction hash is ledgered to the Level 5 public chain to take advantage of the hash power of massive public networks.
Dragon Net can be thought of as a “blockchain of blockchains”, where every level is a complete private blockchain. Because an L1 can send to multiple nodes on a single level, proof of existence is distributed among many places in the network. Eventually, proof of existence reaches level 5 and is published on a public network.

API Documentation

APIs (on chain & off)

SDK Source

Nobody’s Perfect

Known issues or tradeoffs
  • Dragonchain is open source and even though the platform is easy enough for developers to code in any language they are comfortable with, we do not have so large a developer community as Ethereum. We would like to see the Ethereum developer community (and any other communities) become familiar with our SDK’s, our solutions, and our platform, to unlock the full potential of our Ethereum Interchain. Long ago we decided to prioritize both Bitcoin and Ethereum Interchains. We envision an ecosystem that encompasses different projects to give developers the ability to take full advantage of all the opportunities blockchain offers to create decentralized solutions not only for Reddit but for all of our current platforms and systems. We believe that together we will take the adoption of blockchain further. We currently have additional Interchain with Ethereum Classic. We look forward to Interchain with other blockchains in the future. We invite all blockchains projects who believe in decentralization and security to Interchain with Dragonchain.
  • While we only have 700 nodes compared to 8,000 Ethereum and 10,000 Bitcoin nodes. We harness those 18,000 nodes to scale to extremely high levels of security. See Dragonchain metrics.
  • Some may consider the centralization of Dragonchain’s business nodes as an issue at first glance, however, the model is by design to protect business data. We do not consider this a drawback as these nodes can make any, none, or all data public. Depending upon the implementation, every subreddit could have control of its own business node, for potential business and enterprise offerings, bringing new alternative revenue streams to Reddit.

Costs and resources

Summary of cost & resource information for both on-chain & off-chain components used in the PoC, as well as cost & resource estimates for further scaling. If your PoC is not on mainnet, make note of any mainnet caveats (such as congestion issues).
Every transaction on the PoC system had a transaction fee of $0.0001 (one-hundredth of a cent USD). At 256MM transactions, the demo cost $25,600. With current operational fees, the same demonstration would cost $640 USD.
For the demonstration, to achieve throughput to mimic a worldwide payments network, we modeled several clients in AWS and 4-5 business nodes to handle the traffic. The business nodes were tuned to handle higher throughput by adjusting memory and machine footprint on AWS. This flexibility is valuable to implementing a system such as envisioned by Reddit. Given that Reddit’s daily traffic (posts, replies, and votes) is less than half that of our demo, we would expect that the entire Reddit system could be handled on 2-5 business nodes using right-sized containers on AWS or similar environments.
Verification was accomplished on the operational Dragon Net network with over 700 independently owned verification nodes running around the world at no cost to the business other than paid transaction fees.

Requirements

Scaling

This PoC should scale to the numbers below with minimal costs (both on & off-chain). There should also be a clear path to supporting hundreds of millions of users.
Over a 5 day period, your scaling PoC should be able to handle:
*100,000 point claims (minting & distributing points) *25,000 subscriptions *75,000 one-off points burning *100,000 transfers
During Dragonchain’s 24 hour demo, the above required numbers were reached within the first few minutes.
Reddit’s total activity is 9000% more than Ethereum’s total transaction level. Even if you do not include votes, it is still 700% more than Ethereum’s current volume. Dragonchain has demonstrated that it can handle 250 million transactions a day, and it’s architecture allows for multiple systems to work at that level simultaneously. In our PoC, we demonstrate double the full capacity of Reddit, and every transaction was proven all the way to Bitcoin and Ethereum.
Reddit Scaling on Ethereum

Decentralization

Solutions should not depend on any single third-party provider. We prefer solutions that do not depend on specific entities such as Reddit or another provider, and solutions with no single point of control or failure in off-chain components but recognize there are numerous trade-offs to consider
Dragonchain’s architecture calls for a hybrid approach. Private business nodes hold the sensitive data while the validation and verification of transactions for the business are decentralized within seconds and secured to public blockchains within 10 minutes to 2 hours. Nodes could potentially be controlled by owners of individual subreddits for more organic decentralization.
  • Billing is currently centralized - there is a path to federation and decentralization of a scaled billing solution.
  • Operational multi-cloud
  • Operational on-premises capabilities
  • Operational deployment to any datacenter
  • Over 700 independent Community Verification Nodes with proof of ownership
  • Operational Interchain (Interoperable to Bitcoin, Ethereum, and Ethereum Classic, open to more)

Usability Scaling solutions should have a simple end user experience.

Users shouldn't have to maintain any extra state/proofs, regularly monitor activity, keep track of extra keys, or sign anything other than their normal transactions
Dragonchain and its customers have demonstrated extraordinary usability as a feature in many applications, where users do not need to know that the system is backed by a live blockchain. Lyceum is one of these examples, where the progress of academy courses is being tracked, and successful completion of courses is rewarded with certificates on chain. Our @Save_The_Tweet bot is popular on Twitter. When used with one of the following hashtags - #please, #blockchain, #ThankYou, or #eternalize the tweet is saved through Eternal to multiple blockchains. A proof report is available for future reference. Other examples in use are DEN, our decentralized social media platform, and our console, where users can track their node rewards, view their TIME, and operate a business node.
Examples:

Transactions complete in a reasonable amount of time (seconds or minutes, not hours or days)
All transactions are immediately usable on chain by the system. A transaction begins the path to decentralization at the conclusion of a 5-second block when it gets distributed across 5 separate community run nodes. Full decentralization occurs within 10 minutes to 2 hours depending on which interchain (Bitcoin, Ethereum, or Ethereum Classic) the transaction hits first. Within approximately 2 hours, the combined hash power of all interchained blockchains secures the transaction.

Free to use for end users (no gas fees, or fixed/minimal fees that Reddit can pay on their behalf)
With transaction pricing as low as $0.0000025 per transaction, it may be considered reasonable for Reddit to cover transaction fees for users.
All of Reddit's Transactions on Blockchain (month)
Community points can be earned by users and distributed directly to their Reddit account in batch (as per Reddit minting plan), and allow users to withdraw rewards to their Ethereum wallet whenever they wish. Withdrawal fees can be paid by either user or Reddit. This model has been operating inside the Dragonchain system since 2018, and many security and financial compliance features can be optionally added. We feel that this capability greatly enhances user experience because it is seamless to a regular user without cryptocurrency experience, yet flexible to a tech savvy user. With regard to currency or token transactions, these would occur on the Reddit network, verified to BTC and ETH. These transactions would incur the $0.0000025 transaction fee. To estimate this fee we use the monthly active Reddit users statista with a 60% adoption rate and an estimated 10 transactions per month average resulting in an approximate $720 cost across the system. Reddit could feasibly incur all associated internal network charges (mining/minting, transfer, burn) as these are very low and controllable fees.
Reddit Internal Token Transaction Fees

Reddit Ethereum Token Transaction Fees
When we consider further the Ethereum fees that might be incurred, we have a few choices for a solution.
  1. Offload all Ethereum transaction fees (user withdrawals) to interested users as they wish to withdraw tokens for external use or sale.
  2. Cover Ethereum transaction fees by aggregating them on a timed schedule. Users would request withdrawal (from Reddit or individual subreddits), and they would be transacted on the Ethereum network every hour (or some other schedule).
  3. In a combination of the above, customers could cover aggregated fees.
  4. Integrate with alternate Ethereum roll up solutions or other proposals to aggregate minting and distribution transactions onto Ethereum.

Bonus Points

Users should be able to view their balances & transactions via a blockchain explorer-style interface
From interfaces for users who have no knowledge of blockchain technology to users who are well versed in blockchain terms such as those present in a typical block explorer, a system powered by Dragonchain has flexibility on how to provide balances and transaction data to users. Transactions can be made viewable in an Eternal Proof Report, which displays raw data along with TIME staking information and traceability all the way to Bitcoin, Ethereum, and every other Interchained network. The report shows fields such as transaction ID, timestamp, block ID, multiple verifications, and Interchain proof. See example here.
Node payouts within the Dragonchain console are listed in chronological order and can be further seen in either Dragons or USD. See example here.
In our social media platform, Dragon Den, users can see, in real-time, their NRG and MTR balances. See example here.
A new influencer app powered by Dragonchain, Raiinmaker, breaks down data into a user friendly interface that shows coin portfolio, redeemed rewards, and social scores per campaign. See example here.

Exiting is fast & simple
Withdrawing funds on Dragonchain’s console requires three clicks, however, withdrawal scenarios with more enhanced security features per Reddit’s discretion are obtainable.

Interoperability Compatibility with third party apps (wallets/contracts/etc) is necessary.
Proven interoperability at scale that surpasses the required specifications. Our entire platform consists of interoperable blockchains connected to each other and traditional systems. APIs are well documented. Third party permissions are possible with a simple smart contract without the end user being aware. No need to learn any specialized proprietary language. Any code base (not subsets) is usable within a Docker container. Interoperable with any blockchain or traditional APIs. We’ve witnessed relatively complex systems built by engineers with no blockchain or cryptocurrency experience. We’ve also demonstrated the creation of smart contracts within minutes built with BASH shell and Node.js. Please see our source code and API documentation.

Scaling solutions should be extensible and allow third parties to build on top of it Open source and extensible
APIs should be well documented and stable

Documentation should be clear and complete
For full documentation, explore our docs, SDK’s, Github repo’s, architecture documents, original Disney documentation, and other links or resources provided in this proposal.

Third-party permissionless integrations should be possible & straightforward Smart contracts are Docker based, can be written in any language, use full language (not subsets), and can therefore be integrated with any system including traditional system APIs. Simple is better. Learning an uncommon or proprietary language should not be necessary.
Advanced knowledge of mathematics, cryptography, or L2 scaling should not be required. Compatibility with common utilities & toolchains is expected.
Dragonchain business nodes and smart contracts leverage Docker to allow the use of literally any language or executable code. No proprietary language is necessary. We’ve witnessed relatively complex systems built by engineers with no blockchain or cryptocurrency experience. We’ve also demonstrated the creation of smart contracts within minutes built with BASH shell and Node.js.

Bonus

Bonus Points: Show us how it works. Do you have an idea for a cool new use case for Community Points? Build it!

TIME

Community points could be awarded to Reddit users based upon TIME too, whereas the longer someone is part of a subreddit, the more community points someone naturally gained, even if not actively commenting or sharing new posts. A daily login could be required for these community points to be credited. This grants awards to readers too and incentivizes readers to create an account on Reddit if they browse the website often. This concept could also be leveraged to provide some level of reputation based upon duration and consistency of contribution to a community subreddit.

Dragon Den

Dragonchain has already built a social media platform that harnesses community involvement. Dragon Den is a decentralized community built on the Dragonchain blockchain platform. Dragon Den is Dragonchain’s answer to fake news, trolling, and censorship. It incentivizes the creation and evaluation of quality content within communities. It could be described as being a shareholder of a subreddit or Reddit in its entirety. The more your subreddit is thriving, the more rewarding it will be. Den is currently in a public beta and in active development, though the real token economy is not live yet. There are different tokens for various purposes. Two tokens are Lair Ownership Rights (LOR) and Lair Ownership Tokens (LOT). LOT is a non-fungible token for ownership of a specific Lair. LOT will only be created and converted from LOR.
Energy (NRG) and Matter (MTR) work jointly. Your MTR determines how much NRG you receive in a 24-hour period. Providing quality content, or evaluating content will earn MTR.

Security. Users have full ownership & control of their points.
All community points awarded based upon any type of activity or gift, are secured and provable to all Interchain networks (currently BTC, ETH, ETC). Users are free to spend and withdraw their points as they please, depending on the features Reddit wants to bring into production.

Balances and transactions cannot be forged, manipulated, or blocked by Reddit or anyone else
Users can withdraw their balance to their ERC20 wallet, directly through Reddit. Reddit can cover the fees on their behalf, or the user covers this with a portion of their balance.

Users should own their points and be able to get on-chain ERC20 tokens without permission from anyone else
Through our console users can withdraw their ERC20 rewards. This can be achieved on Reddit too. Here is a walkthrough of our console, though this does not show the quick withdrawal functionality, a user can withdraw at any time. https://www.youtube.com/watch?v=aNlTMxnfVHw

Points should be recoverable to on-chain ERC20 tokens even if all third-parties involved go offline
If necessary, signed transactions from the Reddit system (e.g. Reddit + Subreddit) can be sent to the Ethereum smart contract for minting.

A public, third-party review attesting to the soundness of the design should be available
To our knowledge, at least two large corporations, including a top 3 accounting firm, have conducted positive reviews. These reviews have never been made public, as Dragonchain did not pay or contract for these studies to be released.

Bonus points
Public, third-party implementation review available or in progress
See above

Compatibility with HSMs & hardware wallets
For the purpose of this proposal, all tokenization would be on the Ethereum network using standard token contracts and as such, would be able to leverage all hardware wallet and Ethereum ecosystem services.

Other Considerations

Minting/distributing tokens is not performed by Reddit directly
This operation can be automated by smart contract on Ethereum. Subreddits can if desired have a role to play.

One off point burning, as well as recurring, non-interactive point burning (for subreddit memberships) should be possible and scalable
This is possible and scalable with interaction between Dragonchain Reddit system and Ethereum token contract(s).

Fully open-source solutions are strongly preferred
Dragonchain is fully open source (see section on Disney release after conclusion).

Conclusion

Whether it is today, or in the future, we would like to work together to bring secure flexibility to the highest standards. It is our hope to be considered by Ethereum, Reddit, and other integrative solutions so we may further discuss the possibilities of implementation. In our public demonstration, 256 million transactions were handled in our operational network on chain in 24 hours, for the low cost of $25K, which if run today would cost $625. Dragonchain’s interoperable foundation provides the atmosphere necessary to implement a frictionless community points system. Thank you for your consideration of our proposal. We look forward to working with the community to make something great!

Disney Releases Blockchain Platform as Open Source

The team at Disney created the Disney Private Blockchain Platform. The system was a hybrid interoperable blockchain platform for ledgering and smart contract development geared toward solving problems with blockchain adoption and usability. All objective evaluation would consider the team’s output a success. We released a list of use cases that we explored in some capacity at Disney, and our input on blockchain standardization as part of our participation in the W3C Blockchain Community Group.
https://lists.w3.org/Archives/Public/public-blockchain/2016May/0052.html

Open Source

In 2016, Roets proposed to release the platform as open source to spread the technology outside of Disney, as others within the W3C group were interested in the solutions that had been created inside of Disney.
Following a long process, step by step, the team met requirements for release. Among the requirements, the team had to:
  • Obtain VP support and approval for the release
  • Verify ownership of the software to be released
  • Verify that no proprietary content would be released
  • Convince the organization that there was a value to the open source community
  • Convince the organization that there was a value to Disney
  • Offer the plan for ongoing maintenance of the project outside of Disney
  • Itemize competing projects
  • Verify no conflict of interest
  • Preferred license
  • Change the project name to not use the name Disney, any Disney character, or any other associated IP - proposed Dragonchain - approved
  • Obtain legal approval
  • Approval from corporate, parks, and other business units
  • Approval from multiple Disney patent groups Copyright holder defined by Disney (Disney Connected and Advanced Technologies)
  • Trademark searches conducted for the selected name Dragonchain
  • Obtain IT security approval
  • Manual review of OSS components conducted
  • OWASP Dependency and Vulnerability Check Conducted
  • Obtain technical (software) approval
  • Offer management, process, and financial plans for the maintenance of the project.
  • Meet list of items to be addressed before release
  • Remove all Disney project references and scripts
  • Create a public distribution list for email communications
  • Remove Roets’ direct and internal contact information
  • Create public Slack channel and move from Disney slack channels
  • Create proper labels for issue tracking
  • Rename internal private Github repository
  • Add informative description to Github page
  • Expand README.md with more specific information
  • Add information beyond current “Blockchains are Magic”
  • Add getting started sections and info on cloning/forking the project
  • Add installation details
  • Add uninstall process
  • Add unit, functional, and integration test information
  • Detail how to contribute and get involved
  • Describe the git workflow that the project will use
  • Move to public, non-Disney git repository (Github or Bitbucket)
  • Obtain Disney Open Source Committee approval for release
On top of meeting the above criteria, as part of the process, the maintainer of the project had to receive the codebase on their own personal email and create accounts for maintenance (e.g. Github) with non-Disney accounts. Given the fact that the project spanned multiple business units, Roets was individually responsible for its ongoing maintenance. Because of this, he proposed in the open source application to create a non-profit organization to hold the IP and maintain the project. This was approved by Disney.
The Disney Open Source Committee approved the application known as OSSRELEASE-10, and the code was released on October 2, 2016. Disney decided to not issue a press release.
Original OSSRELASE-10 document

Dragonchain Foundation

The Dragonchain Foundation was created on January 17, 2017. https://den.social/l/Dragonchain/24130078352e485d96d2125082151cf0/dragonchain-and-disney/
submitted by j0j0r0 to ethereum [link] [comments]

A new whitepaper analysing the performance and scalability of the Streamr pub/sub messaging Network is now available. Take a look at some of the fascinating key results in this introductory blog

A new whitepaper analysing the performance and scalability of the Streamr pub/sub messaging Network is now available. Take a look at some of the fascinating key results in this introductory blog

Streamr Network: Performance and Scalability Whitepaper


https://preview.redd.it/bstqyn43x4j51.png?width=2600&format=png&auto=webp&s=81683ca6303ab84ab898c096345464111d674ee5
The Corea milestone of the Streamr Network went live in late 2019. Since then a few people in the team have been working on an academic whitepaper to describe its design principles, position it with respect to prior art, and prove certain properties it has. The paper is now ready, and it has been submitted to the IEEE Access journal for peer review. It is also now published on the new Papers section on the project website. In this blog, I’ll introduce the paper and explain its key results. All the figures presented in this post are from the paper.
The reasons for doing this research and writing this paper were simple: many prospective users of the Network, especially more serious ones such as enterprises, ask questions like ‘how does it scale?’, ‘why does it scale?’, ‘what is the latency in the network?’, and ‘how much bandwidth is consumed?’. While some answers could be provided before, the Network in its currently deployed form is still small-scale and can’t really show a track record of scalability for example, so there was clearly a need to produce some in-depth material about the structure of the Network and its performance at large, global scale. The paper answers these questions.
Another reason is that decentralized peer-to-peer networks have experienced a new renaissance due to the rise in blockchain networks. Peer-to-peer pub/sub networks were a hot research topic in the early 2000s, but not many real-world implementations were ever created. Today, most blockchain networks use methods from that era under the hood to disseminate block headers, transactions, and other events important for them to function. Other megatrends like IoT and social media are also creating demand for new kinds of scalable message transport layers.

The latency vs. bandwidth tradeoff

The current Streamr Network uses regular random graphs as stream topologies. ‘Regular’ here means that nodes connect to a fixed number of other nodes that publish or subscribe to the same stream, and ‘random’ means that those nodes are selected randomly.
Random connections can of course mean that absurd routes get formed occasionally, for example a data point might travel from Germany to France via the US. But random graphs have been studied extensively in the academic literature, and their properties are not nearly as bad as the above example sounds — such graphs are actually quite good! Data always takes multiple routes in the network, and only the fastest route counts. The less-than-optimal routes are there for redundancy, and redundancy is good, because it improves security and churn tolerance.
There is an important parameter called node degree, which is the fixed number of nodes to which each node in a topology connects. A higher node degree means more duplication and thus more bandwidth consumption for each node, but it also means that fast routes are more likely to form. It’s a tradeoff; better latency can be traded for worse bandwidth consumption. In the following section, we’ll go deeper into analyzing this relationship.

Network diameter scales logarithmically

One useful metric to estimate the behavior of latency is the network diameter, which is the number of hops on the shortest path between the most distant pair of nodes in the network (i.e. the “longest shortest path”. The below plot shows how the network diameter behaves depending on node degree and number of nodes.

Network diameter
We can see that the network diameter increases logarithmically (very slowly), and a higher node degree ‘flattens the curve’. This is a property of random regular graphs, and this is very good — growing from 10,000 nodes to 100,000 nodes only increases the diameter by a few hops! To analyse the effect of the node degree further, we can plot the maximum network diameter using various node degrees:
Network diameter in network of 100 000 nodes
We can see that there are diminishing returns for increasing the node degree. On the other hand, the penalty (number of duplicates, i.e. bandwidth consumption), increases linearly with node degree:

Number of duplicates received by the non-publisher nodes
In the Streamr Network, each stream forms its own separate overlay network and can even have a custom node degree. This allows the owner of the stream to configure their preferred latency/bandwidth balance (imagine such a slider control in the Streamr Core UI). However, finding a good default value is important. From this analysis, we can conclude that:
  • The logarithmic behavior of network diameter leads us to hope that latency might behave logarithmically too, but since the number of hops is not the same as latency (in milliseconds), the scalability needs to be confirmed in the real world (see next section).
  • A node degree of 4 yields good latency/bandwidth balance, and we have selected this as the default value in the Streamr Network. This value is also used in all the real-world experiments described in the next section.
It’s worth noting that in such a network, the bandwidth requirement for publishers is determined by the node degree and not the number of subscribers. With a node degree 4 and a million subscribers, the publisher only uploads 4 copies of a data point, and the million subscribing nodes share the work of distributing the message among themselves. In contrast, a centralized data broker would need to push out a million copies.

Latency scales logarithmically

To see if actual latency scales logarithmically in real-world conditions, we ran large numbers of nodes in 16 different Amazon AWS data centers around the world. We ran experiments with network sizes between 32 to 2048 nodes. Each node published messages to the network, and we measured how long it took for the other nodes to get the message. The experiment was repeated 10 times for each network size.
The below image displays one of the key results of the paper. It shows a CDF (cumulative distribution function) of the measured latencies across all experiments. The y-axis runs from 0 to 1, i.e. 0% to 100%.
CDF of message propagation delay
From this graph we can easily read things like: in a 32 nodes network (blue line), 50% of message deliveries happened within 150 ms globally, and all messages were delivered in around 250 ms. In the largest network of 2048 nodes (pink line), 99% of deliveries happened within 362 ms globally.
To put these results in context, PubNub, a centralized message brokering service, promises to deliver messages within 250 ms — and that’s a centralized service! Decentralization comes with unquestionable benefits (no vendor lock-in, no trust required, network effects, etc.), but if such protocols are inferior in terms of performance or cost, they won’t get adopted. It’s pretty safe to say that the Streamr Network is on par with centralized services even when it comes to latency, which is usually the Achilles’ heel of P2P networks (think of how slow blockchains are!). And the Network will only get better with time.
Then we tackled the big question: does the latency behave logarithmically?
Mean message propagation delay in Amazon experiments
Above, the thick line is the average latency for each network size. From the graph, we can see that the latency grows logarithmically as the network size increases, which means excellent scalability.
The shaded area shows the difference between the best and worst average latencies in each repeat. Here we can see the element of chance at play; due to the randomness in which nodes become neighbours, some topologies are faster than others. Given enough repeats, some near-optimal topologies can be found. The difference between average topologies and the best topologies gives us a glimpse of how much room for optimisation there is, i.e. with a smarter-than-random topology construction, how much improvement is possible (while still staying in the realm of regular graphs)? Out of the observed topologies, the difference between the average and the best observed topology is between 5–13%, so not that much. Other subclasses of graphs, such as irregular graphs, trees, and so on, can of course unlock more room for improvement, but they are different beasts and come with their own disadvantages too.
It’s also worth asking: how much worse is the measured latency compared to the fastest possible latency, i.e. that of a direct connection? While having direct connections between a publisher and subscribers is definitely not scalable, secure, or often even feasible due to firewalls, NATs and such, it’s still worth asking what the latency penalty of peer-to-peer is.

Relative delay penalty in Amazon experiments
As you can see, this plot has the same shape as the previous one, but the y-axis is different. Here, we are showing the relative delay penalty (RDP). It’s the latency in the peer-to-peer network (shown in the previous plot), divided by the latency of a direct connection measured with the ping tool. So a direct connection equals an RDP value of 1, and the measured RDP in the peer-to-peer network is roughly between 2 and 3 in the observed topologies. It increases logarithmically with network size, just like absolute latency.
Again, given that latency is the Achilles’ heel of decentralized systems, that’s not bad at all. It shows that such a network delivers acceptable performance for the vast majority of use cases, only excluding the most latency-sensitive ones, such as online gaming or arbitrage trading. For most other use cases, it doesn’t matter whether it takes 25 or 75 milliseconds to deliver a data point.

Latency is predictable

It’s useful for a messaging system to have consistent and predictable latency. Imagine for example a smart traffic system, where cars can alert each other about dangers on the road. It would be pretty bad if, even minutes after publishing it, some cars still haven’t received the warning. However, such delays easily occur in peer-to-peer networks. Everyone in the crypto space has seen first-hand how plenty of Bitcoin or Ethereum nodes lag even minutes behind the latest chain state.
So we wanted to see whether it would be possible to estimate the latencies in the peer-to-peer network if the topology and the latencies between connected pairs of nodes are known. We applied Dijkstra’s algorithm to compute estimates for average latencies from the input topology data, and compared the estimates to the actual measured average latencies:
Mean message propagation delay in Amazon experiments
We can see that, at least in these experiments, the estimates seemed to provide a lower bound for the actual values, and the average estimation error was 3.5%. The measured value is higher than the estimated one because the estimation only considers network delays, while in reality there is also a little bit of a processing delay at each node.

Conclusion

The research has shown that the Streamr Network can be expected to deliver messages in roughly 150–350 milliseconds worldwide, even at a large scale with thousands of nodes subscribing to a stream. This is on par with centralized message brokers today, showing that the decentralized and peer-to-peer approach is a viable alternative for all but the most latency-sensitive applications.
It’s thrilling to think that by accepting a latency only 2–3 times longer than the latency of an unscalable and insecure direct connecion, applications can interconnect over an open fabric with global scalability, no single point of failure, no vendor lock-in, and no need to trust anyone — all that becomes available out of the box.
In the real-time data space, there are plenty of other aspects to explore, which we didn’t cover in this paper. For example, we did not measure throughput characteristics of network topologies. Different streams are independent, so clearly there’s scalability in the number of streams, and heavy streams can be partitioned, allowing each stream to scale too. Throughput is mainly limited, therefore, by the hardware and network connection used by the network nodes involved in a topology. Measuring the maximum throughput would basically be measuring the hardware as well as the performance of our implemented code. While interesting, this is not a high priority research target at this point in time. And thanks to the redundancy in the network, individual slow nodes do not slow down the whole topology; the data will arrive via faster nodes instead.
Also out of scope for this paper is analysing the costs of running such a network, including the OPEX for publishers and node operators. This is a topic of ongoing research, which we’re currently doing as part of designing the token incentive mechanisms of the Streamr Network, due to be implemented in a later milestone.
I hope that this blog has provided some insight into the fascinating results the team uncovered during this research. For a more in-depth look at the context of this work, and more detail about the research, we invite you to read the full paper.
If you have an interest in network performance and scalability from a developer or enterprise perspective, we will be hosting a talk about this research in the coming weeks, so keep an eye out for more details on the Streamr social media channels. In the meantime, feedback and comments are welcome. Please add a comment to this Reddit thread or email [[email protected]](mailto:[email protected]).
Originally published by. Henri at blog.streamr.network on August 24, 2020.
submitted by thamilton5 to streamr [link] [comments]

DFINITY Research Report

DFINITY Research Report
Author: Gamals Ahmed, CoinEx Business Ambassador
ABSTRACT
The DFINITY blockchain computer provides a secure, performant and flexible consensus mechanism. At its core, DFINITY contains a decentralized randomness beacon, which acts as a verifiable random function (VRF) that produces a stream of outputs over time. The novel technique behind the beacon relies on the existence of a unique-deterministic, non-interactive, DKG-friendly threshold signatures scheme. The only known examples of such a scheme are pairing-based and derived from BLS.
The DFINITY blockchain is layered on top of the DFINITY beacon and uses the beacon as its source of randomness for leader selection and leader ranking. A “weight” is attributed to a chain based on the ranks of the leaders who propose the blocks in the chain, and that weight is used to select between competing chains. The DFINITY blockchain is layered on top of the DFINITY beacon and uses the beacon as its source of randomness for leader selection and leader ranking blockchain is further hardened by a notarization process which dramatically improves the time to finality and eliminates the nothing-at-stake and selfish mining attacks.
DFINITY consensus algorithm is made to scale through continuous quorum selections driven by the random beacon. In practice, DFINITY achieves block times of a few seconds and transaction finality after only two confirmations. The system gracefully handles temporary losses of network synchrony including network splits, while it is provably secure under synchrony.

1.INTRODUCTION

DFINITY is building a new kind of public decentralized cloud computing resource. The company’s platform uses blockchain technology which is aimed at building a new kind of public decentralized cloud computing resource with unlimited capacity, performance and algorithmic governance shared by the world, with the capability to power autonomous self-updating software systems, enabling organizations to design and deploy custom-tailored cloud computing projects, thereby reducing enterprise IT system costs by 90%.
DFINITY aims to explore new territory and prove that the blockchain opportunity is far broader and deeper than anyone has hitherto realized, unlocking the opportunity with powerful new crypto.
Although a standalone project, DFINITY is not maximalist minded and is a great supporter of Ethereum.
The DFINITY blockchain computer provides a secure, performant and flexible consensus mechanism. At its core, DFINITY contains a decentralized randomness beacon, which acts as a verifiable random function (VRF) that produces a stream of outputs over time. The novel technique behind the beacon relies on the existence of a unique-deterministic, non-interactive, DKG-friendly threshold signatures scheme. The only known examples of such a scheme are pairing-based and derived from BLS.
DFINITY’s consensus mechanism has four layers: notary (provides fast finality guarantees to clients and external observers), blockchain (builds a blockchain from validated transactions via the Probabilistic Slot Protocol driven by the random beacon), random beacon (provides the source of randomness for all higher layers like smart contract applications), and identity (provides a registry of all clients).
DFINITY’s consensus mechanism has four layers

Figure1: DFINITY’s consensus mechanism layers
1. Identity layer:
Active participants in the DFINITY Network are called clients. Where clients are registered with permanent identities under a pseudonym. Moreover, DFINITY supports open membership by providing a protocol for registering new clients by depositing a stake with an insurance period. This is the responsibility of the first layer.
2. Random Beacon layer:
Provides the source of randomness (VRF) for all higher layers including ap- plications (smart contracts). The random beacon in the second layer is an unbiasable, verifiable random function (VRF) that is produced jointly by registered clients. Each random output of the VRF is unpredictable by anyone until just before it becomes avail- able to everyone. This is a key technology of the DFINITY system, which relies on a threshold signature scheme with the properties of uniqueness and non-interactivity.

https://preview.redd.it/hkcf53ic05e51.jpg?width=441&format=pjpg&auto=webp&s=44d45c9602ee630705ce92902b8a8379201d8111
3. Blockchain layer:
The third layer deploys the “probabilistic slot protocol” (PSP). This protocol ranks the clients for each height of the chain, in an order that is derived determin- istically from the unbiased output of the random beacon for that height. A weight is then assigned to block proposals based on the proposer’s rank such that blocks from clients at the top of the list receive a higher weight. Forks are resolved by giving favor to the “heaviest” chain in terms of accumulated block weight — quite sim- ilar to how traditional proof-of-work consensus is based on the highest accumulated amount of work.
The first advantage of the PSP protocol is that the ranking is available instantaneously, which allows for a predictable, constant block time. The second advantage is that there is always a single highest-ranked client, which allows for a homogenous network bandwidth utilization. Instead, a race between clients would favor a usage in bursts.
4. Notarization layer:
Provides fast finality guarantees to clients and external observers. DFINITY deploys the novel technique of block notarization in its fourth layer to speed up finality. A notarization is a threshold signature under a block created jointly by registered clients. Only notarized blocks can be included in a chain. Of all RSA-based alternatives exist but suffer from an impracticality of setting up the thresh- old keys without a trusted dealer.
DFINITY achieves its high speed and short block times exactly because notarization is not full consensus.
DFINITY does not suffer from selfish mining attack or a problem nothing at stake because the authentication step is impossible for the opponent to build and maintain a series of linked and trusted blocks in secret.
DFINITY’s consensus is designed to operate on a network of millions of clients. To en- able scalability to this extent, the random beacon and notarization protocols are designed such as that they can be safely and efficiently delegated to a committee

1.1 OVERVIEW ABOUT DFINITY

DFINITY is a blockchain-based cloud-computing project that aims to develop an open, public network, referred to as the “internet computer,” to host the next generation of software and data. and it is a decentralized and non-proprietary network to run the next generation of mega-applications. It dubbed this public network “Cloud 3.0”.
DFINITY is a third generation virtual blockchain network that sets out to function as an “intelligent decentralised cloud,”¹ strongly focused on delivering a viable corporate cloud solution. The DFINITY project is overseen, supported and promoted by DFINITY Stiftung a not-for-profit foundation based in Zug, Switzerland.
DFINITY is a decentralized network design whose protocols generate a reliable “virtual blockchain computer” running on top of a peer-to-peer network upon which software can be installed and can operate in the tamperproof mode of smart contracts.
DFINITY introduces algorithmic governance in the form of a “Blockchain Nervous System” that can protect users from attacks and help restart broken systems, dynamically optimize network security and efficiency, upgrade the protocol and mitigate misuse of the platform, for example by those wishing to run illegal or immoral systems.
DFINITY is an Ethereum-compatible smart contract platform that is implementing some revolutionary ideas to address blockchain performance, scaling, and governance. Whereas
DFINITY could pose a credible threat to Ethereum’s extinction, the project is pursuing a coevolutionary strategy by contributing funding and effort to Ethereum projects and freely offering their technology to Ethereum for adoption. DFINITY has labeled itself Ethereum’s “crazy sister” to express it’s close genetic resemblance to Ethereum, differentiated by its obsession with performance and neuron-inspired governance model.
Dfinity raised $61 million from Andreesen Horowitz and Polychain Capital in a February 2018 funding round. At the time, Dfinity said it wanted to create an “internet computer” to cut the costs of running cloud-based business applications. A further $102 million funding round in August 2018 brought the project’s total funding to $195 million.
In May 2018, Dfinity announced plans to distribute around $35 million worth of Dfinity tokens in an airdrop. It was part of the company’s plan to create a “Cloud 3.0.” Because of regulatory concerns, none of the tokens went to US residents.
DFINITY be broadening and strengthening the EVM ecosystem by giving applications a choice of platforms with different characteristics. However, if DFINITY succeeds in delivering a fully EVM-compatible smart contract platform with higher transaction throughput, faster confirmation times, and governance mechanisms that can resolve public disputes without causing community splits, then it will represent a clearly superior choice for deploying new applications and, as its network effects grow, an attractive place to bring existing ones. Of course the challenge for DFINITY will be to deliver on these promises while meeting the security demands of a public chain with significant value at risk.

1.1.1 DFINITY FUTURE

  • DFINITY aims to explore new blockchain territory related to the original goals of the Ethereum project and is sometimes considered “Ethereum’s crazy sister.”
  • DFINITY is developing blockchain-based infrastructure to support a new style of the internet (akin to Ethereum’s “World Computer”), one in which the internet itself will support software applications and data rather than various cloud hosting providers.
  • The project suggests this reinvented software platform can simplify the development of new software systems, reduce the human capital needed to maintain and secure data, and preserve user data privacy.
  • Dfinity aims to reduce the costs of cloud services by creating a decentralized “internet computer” which may launch in 2020
  • Dfinity claims transactions on its network are finalized in 3–5 seconds, compared to 1 hour for Bitcoin and 10 minutes for Ethereum.

1.1.2 DFINITY’S VISION

DFINITY’s vision is its new internet infrastructure can support a wide variety of end-user and enterprise applications. Social media, messaging, search, storage, and peer-to-peer Internet interactions are all examples of functionalities that DFINITY plans to host atop its public Web 3.0 cloud-like computing resource. In order to provide the transaction and data capacity necessary to support this ambitious vision, DFINITY features a unique consensus model (dubbed Threshold Relay) and algorithmic governance via its Blockchain Nervous System (BNS) — sometimes also referred to as the Network Nervous System or NNS.

1.2 DFINITY COMMUNITY

The DFINITY community brings people and organizations together to learn and collaborate on products that help steward the next-generation of internet software and services. The Internet Computer allows developers to take on the monopolization of the internet, and return the internet back to its free and open roots. We’re committed to connecting those who believe the same through our events, content, and discussions.

https://preview.redd.it/0zv64fzf05e51.png?width=637&format=png&auto=webp&s=e2b17365fae3c679a32431062d8e3c00a57673cf

1.3 DFINITY ROADMAP (TIMELINE) February 15, 2017

February 15, 2017
Ethereum based community seed round raises 4M Swiss francs (CHF)
The DFINITY Stiftung, a not-for-profit foundation entity based in Zug, Switzerland, raised the round. The foundation held $10M of assets as of April 2017.
February 8, 2018
Dfinity announces a $61M fundraising round led by Polychain Capital and Andreessen Horowitz
The round $61M round led by Polychain Capital and Andreessen Horowitz, along with an DFINITY Ecosystem Venture Fund which will be used to support projects developing on the DFINITY platform, and an Ethereum based raise in 2017 brings the total funding for the project over $100 million. This is the first cryptocurrency token that Andressen Horowitz has invested in, led by Chris Dixon.
August 2018
Dfinity raises a $102,000,000 venture round from Multicoin Capital, Village Global, Aspect Ventures, Andreessen Horowitz, Polychain Capital, Scalar Capital, Amino Capital and SV Angel.
January 23, 2020
Dfinity launches an open source platform aimed at the social networking giants

2.DFINITY TECHNOLOGY

Dfinity is building what it calls the internet computer, a decentralized technology spread across a network of independent data centers that allows software to run anywhere on the internet rather than in server farms that are increasingly controlled by large firms, such as Amazon Web Services or Google Cloud. This week Dfinity is releasing its software to third-party developers, who it hopes will start making the internet computer’s killer apps. It is planning a public release later this year.
At its core, the DFINITY consensus mechanism is a variation of the Proof of Stake (PoS) model, but offers an alternative to traditional Proof of Work (PoW) and delegated PoS (dPoS) networks. Threshold Relay intends to strike a balance between inefficiencies of decentralized PoW blockchains (generally characterized by slow block times) and the less robust game theory involved in vote delegation (as seen in dPoS blockchains). In DFINITY, a committee of “miners” is randomly selected to add a new block to the chain. An individual miner’s probability of being elected to the committee proposing and computing the next block (or blocks) is proportional to the number of dfinities the miner has staked on the network. Further, a “weight” is attributed to a DFINITY chain based on the ranks of the miners who propose blocks in the chain, and that weight is used to choose between competing chains (i.e. resolve chain forks).
A decentralized random beacon manages the random selection process of temporary block producers. This beacon is a Variable Random Function (VRF), which is a pseudo-random function that provides publicly verifiable proofs of its outputs’ correctness. A core component of the random beacon is the use of Boneh-Lynn-Shacham (BLS) signatures. By leveraging the BLS signature scheme, the DFINITY protocol ensures no actor in the network can determine the outcome of the next random assignment.
Dfinity is introducing a new standard, which it calls the internet computer protocol (ICP). These new rules let developers move software around the internet as well as data. All software needs computers to run on, but with ICP the computers could be anywhere. Instead of running on a dedicated server in Google Cloud, for example, the software would have no fixed physical address, moving between servers owned by independent data centers around the world. “Conceptually, it’s kind of running everywhere,” says Dfinity engineering manager Stanley Jones.
DFINITY also features a native programming language, called ActorScript (name may be subject to change), and a virtual machine for smart contract creation and execution. The new smart contract language is intended to simplify the management of application state for programmers via an orthogonal persistence environment (which means active programs are
not required to retrieve or save their state). All ActorScript contracts are eventually compiled down to WebAssembly instructions so the DFINITY virtual machine layer can execute the logic of applications running on the network. The advantage of using the WebAssembly standard is that all major browsers support it and a variety of programming languages can compile down to Wasm (not just ActorScript).
Dfinity is moving fast. Recently, Dfinity showed off a TikTok clone called CanCan. In January it demoed a LinkedIn-alike called LinkedUp. Neither app is being made public, but they make a convincing case that apps made for the internet computer can rival the real things.

2.1 DFINITY CORE APPLICATIONS

The DFINITY cloud has two core applications:
  1. Enabling the re-engineering of business: DFINITY ambitiously aims to facilitate the re-engineering of mass-market services (such as Web Search, Ridesharing Services, Messaging Services, Social Media, Supply Chain, etc) into open source businesses that leverage autonomous software and decentralised governance systems to operate and update themselves more efficiently.
  2. Enable the re-engineering of enterprise IT systems to reduce costs: DFINITY seeks to re-engineer enterprise IT systems to take advantage of the unique properties that blockchain computer networks provide.
At present, computation on blockchain-based computer networks is far more expensive than traditional, centralised solutions (Amazon Web Services, Microsoft Azure, Google Cloud Platform, etc). Despite increasing computational cost, DFINITY intends to lower net costs “by 90% or more” through reducing the human capital cost associated with sustaining and supporting these services.
Whilst conceptually similar to Ethereum, DFINITY employs original and new cryptography methods and protocols (crypto:3) at the network level, in concert with AI and network-fuelled systemic governance (Blockchain Nervous System — BNS) to facilitate Corporate adoption.
DFINITY recognises that different users value different properties and sees itself as more of a fully compatible extension of the Ethereum ecosystem rather than a competitor of the Ethereum network.
In the future, DFINITY hopes that much of their “new crypto might be used within the Ethereum network and are also working hard on shared technology components.”
As the DFINITY project develops over time, the DFINITY Stiftung foundation intends to steadily increase the BNS’ decision-making responsibilities over time, eventually resulting in the dissolution of its own involvement entirely, once the BNS is sufficiently sophisticated.
DFINITY consensus mechanism is a heavily optimized proof of stake (PoS) model. It places a strong emphasis on transaction finality through implementing a Threshold Relay technique in conjunction with the BLS signature scheme and a notarization method to address many of the problems associated with PoS consensus.

2.2 THRESHOLD RELAY

As a public cloud computing resource, DFINITY targets business applications by substantially reducing cloud computing costs for IT systems. They aim to achieve this with a highly scalable and powerful network with potentially unlimited capacity. The DFINITY platform is chalk full of innovative designs and features like their Blockchain Nervous System (BNS) for algorithmic governance.
One of the primary components of the platform is its novel Threshold Relay Consensus model from which randomness is produced, driving the other systems that the network depends on to operate effectively. The consensus system was first designed for a permissioned participation model but can be paired with any method of Sybil resistance for an open participation model.
“The Threshold Relay is the mechanism by which Dfinity randomly samples replicas into groups, sets the groups (committees) up for threshold operation, chooses the current committee, and relays from one committee to the next is called the threshold relay.”
Threshold Relay consists of four layers (As mentioned previously):
  1. Notary layer, which provides fast finality guarantees to clients and external observers and eliminates nothing-at-stake and selfish mining attacks, providing Sybil attack resistance.
  2. Blockchain layer that builds a blockchain from validated transactions via the Probabilistic Slot Protocol driven by the random beacon.
  3. Random beacon, which as previously covered, provides the source of randomness for all higher layers like the blockchain layer smart contract applications.
  4. Identity layer that provides a registry of all clients.

2.2.1 HOW DOES THRESHOLD RELAY WORK?

Threshold Relay produces an endogenous random beacon, and each new value defines random group(s) of clients that may independently try and form into a “threshold group”. The composition of each group is entirely random such that they can intersect and clients can be presented in multiple groups. In DFINITY, each group is comprised of 400 members. When a group is defined, the members attempt to set up a BLS threshold signature system using a distributed key generation protocol. If they are successful within some fixed number of blocks, they then register the public key (“identity”) created for their group on the global blockchain using a special transaction, such that it will become part of the set of active groups in a following “epoch”. The network begins at “genesis” with some number of predefined groups, one of which is nominated to create a signature on some default value. Such signatures are random values — if they were not then the group’s signatures on messages would be predictable and the threshold signature system insecure — and each random value produced thus is used to select a random successor group. This next group then signs the previous random value to produce a new random value and select another group, relaying between groups ad infinitum and producing a sequence of random values.
In a cryptographic threshold signature system a group can produce a signature on a message upon the cooperation of some minimum threshold of its members, which is set to 51% in the DFINITY network. To produce the threshold signature, group members sign the message
individually (here the preceding group’s threshold signature) creating individual “signature shares” that are then broadcast to other group members. The group threshold signature can be constructed upon combination of a sufficient threshold of signature shares. So for example, if the group size is 400, if the threshold is set at 201 any client that collects that many shares will be able to construct the group’s signature on the message. Other group members can validate each signature share, and any client using the group’s public key can validate the single group threshold signature produced by combining them. The magic of the BLS scheme is that it is “unique and deterministic” meaning that from whatever subset of group members the required number of signature shares are collected, the single threshold signature created is always the same and only a single correct value is possible.
Consequently, the sequence of random values produced is entirely deterministic and unmanipulable, and signatures generated by relaying between groups produces a Verifiable Random Function, or VRF. Although the sequence of random values is pre-determined given some set of participating groups, each new random value can only be produced upon the minimal agreement of a threshold of the current group. Conversely, in order for relaying to stall because a random number was not produced, the number of correct processes must be below the threshold. Thresholds are configured so that this is extremely unlikely. For example, if the group size is set to 400, and the threshold is 201, 200 or more of the processes must become faulty to prevent production. If there are 10,000 processes in the network, of which 3,000 are faulty, the probability this will occur is less than 10e-17.

2.3 DFINITY TOKEN

The DFINITY blockchain also supports a native token, called dfinities (DFN), which perform multiple roles within the network, including:
  1. Fuel for deploying and running smart contracts.
  2. Security deposits (i.e. staking) that enable participation in the BNS governance system.
  3. Security deposits that allow client software or private DFINITY cloud networks to connect to the public network.
Although dfinities will end up being assigned a value by the market, the DFINITY team does not intend for DFN to act as a currency. Instead, the project has envisioned PHI, a “next-generation” crypto-fiat scheme, to act as a stable medium of exchange within the DFINITY ecosystem.
Neuron operators can earn Dfinities by participating in network-wide votes, which could be concerning protocol upgrades, a new economic policy, etc. DFN rewards for participating in the governance system are proportional to the number of tokens staked inside a neuron.

2.4 SCALABILITY

DFINITY is constantly developing with a structure that separates consensus, validation, and storage into separate layers. The storage layer is divided into multiple strings, each of which is responsible for processing transactions that occur in the fragment state. The verification layer is responsible for combining hashes of all fragments in a Merkle-like structure that results in a global state fractionation that is stored in blocks in the top-level chain.

2.5 DFINITY CONSENSUS ALGORITHM

The single most important aspect of the user experience is certainly the time required before a transaction becomes final. This is not solved by a short block time alone — Dfinity’s team also had to reduce the number of confirmations required to a small constant. DFINITY moreover had to provide a provably secure proof-of-stake algorithm that scales to millions of active participants without compromising any bit on decentralization.
Dfinity soon realized that the key to scalability lay in having an unmanipulable source of randomness available. Hence they built a scalable decentralized random beacon, based on what they call the Threshold Relay technique, right into the foundation of the protocol. This strong foundation drives a scalable and fast consensus layer: On top of the beacon runs a blockchain which utilizes notarization by threshold groups to achieve near-instant finality. Details can be found in the overview paper that we are releasing today.
The roots of the DFINITY consensus mechanism date back to 2014 when thair Chief Scientist, Dominic Williams, started to look for more efficient ways to drive large consensus networks. Since then, much research has gone into the protocol and it took several iterations to reach its current design.
For any practical consensus system the difficulty lies in navigating the tight terrain that one is given between the boundaries imposed by theoretical impossibility-results and practical performance limitations.
The first key milestone was the novel Threshold Relay technique for decentralized, deterministic randomness, which is made possible by certain unique characteristics of the BLS signature system. The next breakthrough was the notarization technique, which allows DFINITY consensus to solve the traditional problems that come with proof-of-stake systems. Getting the security proofs sound was the final step before publication.
DFINITY consensus has made the proper trade-offs between the practical side (realistic threat models and security assumptions) and the theoretical side (provable security). Out came a flexible, tunable algorithm, which we expect will establish itself as the best performing proof-of-stake algorithm. In particular, having the built-in random beacon will prove to be indispensable when building out sharding and scalable validation techniques.

2.6 LINKEDUP

The startup has rather cheekily called this “an open version of LinkedIn,” the Microsoft-owned social network for professionals. Unlike LinkedIn, LinkedUp, which runs on any browser, is not owned or controlled by a corporate entity.
LinkedUp is built on Dfinity’s so-called Internet Computer, its name for the platform it is building to distribute the next generation of software and open internet services.
The software is hosted directly on the internet on a Switzerland-based independent data center, but in the concept of the Internet Computer, it could be hosted at your house or mine. The compute power to run the application LinkedUp, in this case — is coming not from Amazon AWS, Google Cloud or Microsoft Azure, but is instead based on the distributed architecture that Dfinity is building.
Specifically, Dfinity notes that when enterprises and developers run their web apps and enterprise systems on the Internet Computer, the content is decentralized across a minimum of four or a maximum of an unlimited number of nodes in Dfinity’s global network of independent data centers.
Dfinity is an open source for LinkedUp to developers for creating other types of open internet services on the architecture it has built.
“Open Social Network for Professional Profiles” suggests that on Dfinity model one can create “Open WhatsApp”, “Open eBay”, “Open Salesforce” or “Open Facebook”.
The tools include a Canister Software Developer Kit and a simple programming language called Motoko that is optimized for Dfinity’s Internet Computer.
“The Internet Computer is conceived as an alternative to the $3.8 trillion legacy IT stack, and empowers the next generation of developers to build a new breed of tamper-proof enterprise software systems and open internet services. We are democratizing software development,” Williams said. “The Bronze release of the Internet Computer provides developers and enterprises a glimpse into the infinite possibilities of building on the Internet Computer — which also reflects the strength of the Dfinity team we have built so far.”
Dfinity says its “Internet Computer Protocol” allows for a new type of software called autonomous software, which can guarantee permanent APIs that cannot be revoked. When all these open internet services (e.g. open versions of WhatsApp, Facebook, eBay, Salesforce, etc.) are combined with other open software and services it creates “mutual network effects” where everyone benefits.
On 1 November, DFINITY has released 13 new public versions of the SDK, to our second major milestone [at WEF Davos] of demoing a decentralized web app called LinkedUp on the Internet Computer. Subsequent milestones towards the public launch of the Internet Computer will involve:
  1. On boarding a global network of independent data centers.
  2. Fully tested economic system.
  3. Fully tested Network Nervous Systems for configuration and upgrades

2.7 WHAT IS MOTOKO?

Motoko is a new software language being developed by the DFINITY Foundation, with an accompanying SDK, that is designed to help the broadest possible audience of developers create reliable and maintainable websites, enterprise systems and internet services on the Internet Computer with ease. By developing the Motoko language, the DFINITY Foundation will ensure that a language that is highly optimized for the new environment is available. However, the Internet Computer can support any number of different software frameworks, and the DFINITY Foundation is also working on SDKs that support the Rust and C languages. Eventually, it is expected there will be many different SDKs that target the Internet Computer.
Full article
submitted by CoinEx_Institution to u/CoinEx_Institution [link] [comments]

Telegram AMA - Summary

Telegram AMA - Summary
https://preview.redd.it/hml53mmh5er41.png?width=568&format=png&auto=webp&s=3f0cd662e1836bcb2ea37793cbbbfd6f8a5e9723
Zhuling Chen
It’s always great to hang out in this group. This group means a lot to the Aelf community. It is the first Aelf community and has been there through all the ups and downs in the world. I would like to start with wishing everyone is staying safe at home during the virus outbreak. It definitely has been a difficult time for all of us, but together we can pull through it.
We understand that the situation is quite striking to all of us. But I really believe that the solution to the virus outbreak is about more global coordination and collaboration.
All of you to be assured, our team in different places are all safe and working from home as normal.
The Aelf team in Beijing were among the early ones experiencing the virus outbreak. As everyone was on the way home for Lunar New Year holiday and then experienced a total city lock-down followed by a 40 days’ work from home policy. It was definitely not easy for them, but our team stayed strong, took necessary precautions and focused on work with the right morale. Mappo has recently published some tips on how to work from home effectively based on our experience. Do check it out. Despite not working in the office since February, we have achieved great progress, including launching Aelf 1.0 preview, which is an important milestone in technical delivery and also the roadmap to mainnet launch (which listed out the essential steps for the community to work together to launch a successful public network)
Let's first talk about Aelf v1.0 preview. It is the cornerstone of the mainnet launch. The product itself has all the features that the public network is needed. The codebase has been reviewed and tested rigorously by the team. And a few highlights of how the network would look like:
  1. The code allows a stable and high throughput blockchain network to operate publicly.
  2. For developers, they will love how flexible the system is to be customized, the number of tools and documentation to help them start developing applications on the network
  3. For the whole community, the system is an ever-evolving one where the voting system is ready in place to conduct network-wide voting on various topics, such as transaction fee adjustment, network protocol upgrade, incentive adjustment, etc
  4. Aelf system is able to run multi-chain architecture where each side chain will host different applications and still ready to work with each other
So you may ask since the software is ready, why have we not yet launched the public network? The answer, in short, is that a public blockchain is launched not by a team but through a community effort and that's why we are coordinating the community effort based on the roadmap we proposed. Aelf team has launched the public testnet based on Aelf v1.0 preview and currently, all nodes are under the team. The goal is to let the community and elected nodes to take it over and launch it on a global scale. Not only launch it but also be familiar with the network and also set the launch parameters in a decentralized way. If we take a car as an example, we have made the car, but ultimately the drivers are you guys and therefore before it really hits on the road, we need to guide the community to do a test drive, adjust the car based on what really works for YOU, and ultimately let YOU drive the car freely and safely
So how are we going to help the community launch the network:
First of all, we have launched the codes, documents about the economic system and governance model and technical features. With all the things available, you are able to understand what the system is about, as a token holder what's your benefit in the system, and being a node in the system plays a big role in the governance
Next, without yet electing the nodes, we will get all token holders to join the current Aelf network through a mapping event. That means as long as you have Aelf tokens, you will be able to get 1:1 test tokens on the public testnet. that gives you full access to all the features, and you will feel like you are already using the mainnet. You will get rewarded in making transactions, voting, etc.
Do try out the Aelf wallet and voting features, you will see how easy to transfer tokens cross-chain. and also how flexible the system allows people to make changes. For example, the community may want to adjust the block rewarding parameters or fees to use certain services on mainnet, they can initiate a discussion and then vote in the system and once voted through, it will be reflected on mainnet.
For people or organizations that want to play a bigger role in the system, we will do a dry run of node election. Take it as the real node election before mainnet launch. We will see who the active members of the community are and being trusted by the community. Among the nodes, we will form a network launch committee. The committee will be the crucial party to oversees and ensures the smooth launch of Aelf mainnet, instead of just relying on the Aelf team. This is our step towards decentralization.
The committee will agree on the actual launch process, final checking all the parameters in the system to be ready for launch and then decide when the criteria are met to launch the network. Once all that is decided. We will invite all interested nodes to apply for the election and let the community know what's their plan to grow the Aelf network. the network will initially be launched with a few nodes from the committee and gradually be replaced by the selected nodes (a bootstrap phase). Along the way, we will work with exchanges to conduct token swap (which we are also designing an innovative system to further enhance security and usability of Aelf tokens in exchanges)
Among this isolated and worrisome time, at least we all have something to look forward to: a successful launch of Aelf network! Once it is launched, we are excited to see a vibrant and technically superior network that is good for Dapps to run on top of it.
https://preview.redd.it/yp28n1jj5er41.png?width=559&format=png&auto=webp&s=c470cdedd7f8923f29a3b1bd777476f22cc76521
Doris Guo Q1: As a Blockchain start-up, what difficulties have you overcome when starting Aelf project? What motivates you to solve difficulties and achieve success today?
Zhuling Chen First, just like launching any start-up, its community and investors are usually regional. There is always some bias on if Asian projects are solid. It is really rare to have an Asian project to be supported by western funds and community from day 1. We were lucky to have overcome that obstacle. Having a global investor line-up from day 1. Having a global team from day 1 and also working with a global community from day 1. This benefited us to have an international perspective which is crucial in the blockchain industry.
Secondly, as a hardcore technology company, it is really hard to put in plain words what is our ambition. Our ambition is huge, achieving key innovations in multiple fronts of blockchain technology and organically combined them to serve real users for the future. Our marketing team has been working really hard to elaborate on what Aelf is. Now we have come to a point that the product is ready. Therefore, it is much easier for all of us to understand how solid Aelf is by trying out the network ourselves! That's exactly what the following events will be about - Try out all the exciting features of Aelf network before mainnet launch.
Doris Guo Q2: What critical problems do you see occurring in the blockchain industry nowadays? How does Aelf solve these problems?
Haobo Ma First, we need to distinguish the difference between BTC and ETH. One is Digital Cash and the other is the Smart Contract Platform. Aelf addresses most of the latter's problems. In short, it can be summarized as performance, end-user friendly, developer-friendly, network economy, and self-governance and upgrading. Each of these areas will probably take up a lot of space, and as a whole are the issues described in our two white papers. In short, Aelf is faster, end-users do not need to know the rules of the blockchain, developers can set up the development environment in 10 minutes, have a good economic model and can carry out proposal governance on the chain.
Doris Guo Q3: What is your long-term vision about the industry which Aelf is working at? Are you afraid someday there will be another project with more innovative technology can replace Aelf?
Haobo Ma Let's talk about where Aelf stands in the traditional Internet. It is essentially a cloud service provider, Aelf provides resources and infrastructure for developers to deploy their services, known as smart contracts. We eventually want Aelf to grow like AAA (Amazon, Azure, AliCloud). Because Aelf is a network that can be dynamically scaled, we can accept any new technology, some of the more advanced technologies we can put on a side chain.
Doris Guo Q4: Why did Aelf choose for cross-chain interaction?
Haobo Ma As I mentioned earlier, Aelf solves the Smart Contract Platform problem. However, there are other digital cash problems as well which we would need to use existing infrastructure such as Bitcoin's chain in order to interact with Bitcoin. There are a lot of infrastructures on Ethereum that we want to interact with. Multi-chain on Aelf network mainly is to isolate resources to improve network performance and network stability.
Doris Guo Q5: What difficulties do the Aelf team have now (I talk about COVID-19)? How does the Aelf team solve it? Have you changed the roadmap?
Haobo Ma There is no great impact. The teams in Singapore and Beijing are communicating with each other remotely on a regular basis. The only change is that most of us are now working from home which has no impact and in fact, it seems conducive to the acceptance of more community developers in the future to come. From the internal working schedule and development timeline, there is no great impact. We do not publish specific timeline as we do not want short term holders (traders) to create too much negative pressure on product development.
Doris Guo Q6: Aelf is an open-source blockchain, and there's the common problem of taking a substantial amount of time for the different participants to agree on strategic decisions. What types of governance models do you use in Aelf to address this issue???
Haobo Ma The issue is about public blockchain network, and who can decide the direction of the network. Our answer is long-term holders. For the short-term holders (traders), we refuse to allow them to participate in any discussion of the direction of Aelf because the short-term holders are likely to make a profit and sell quickly, which is essentially the same example of a person who cheats the President and then runs away for his personal gain. We defined a number of proposal processes, including the logic of the two-party system in the United States, and the participation in the referendum to ensure that the final proposal represents the majority. At the same time, we are looking for some legal solutions to avoid bifurcation, such as prohibiting exchanges from intervening in bifurcated new tokens. While we cannot limit a community, we should be able to find ways to limit a centralized organization. This restriction is akin to a ban on national secession.
Doris Guo Q7: How will Aelf empower Investors, Companies, Developers, Platform Users to deliver impactful solutions and bring value to people all over the world?
Haobo Ma We will learn from the operational experience of successful foundations such as the LINUX foundation and license some commercial companies to use Aelf solutions to solve business problems. At the same time, Aelf is an open-source product under the MIT License, and we accept any use that does not violate this open-source principle.
Zhuling Chen Let me add on to Haobo’s statement: to incentivize and empower the community, we are also exploring ways to let the community decide how to use the funds for Aelf (allocate to where it matters to our community) once mainnet is launched. This means you guys can decide what are the projects to be funded on Aelf, etc
Doris Guo Q8:When will the node campaign start? How will Aelf attract users to participate in nodes election?
Haobo Ma According to our published roadmap, the timeline can be dynamic, but I don't think it will be too long. The main idea is to let everyone understand what we envision Aelf to be like, and what are the rights and benefits of being a node in the future. We hope to find nodes that fully recognize the efforts of Aelf at the present stage and are willing to participate in the future development of Aelf. We will run a simulation of the node campaign on the testnet and set up a temporary mainnet launch committee. Please follow our official Twitter for more upcoming details!
Doris Guo Q9: Token swap form 2 is some kind of cross-chain transfer? It will be handled by a smart contract?
Haobo Ma It is handled by the smart contract, we define an asset cross-chain transfer protocol, but it may be opened after a snapshot.
Doris Guo Q10: Which Exchanges will support token swap? Do you have any plan to list Aelf in some big exchange like Binance, Houbi, Kucoin, .......?
Haobo Ma We are already in talks with some exchanges, there is still competition between exchanges, and many are still hoping to attract more users by getting access to mainnet token swap early.
Doris Guo Q11: Aside conversion of the current tokens to mainnet tokens, what other main features will be accomplished with the mainnet launch?
Haobo Ma We have a documentation file that has been published, which has listed some features: https://Aelf.io/gridcn/Aelf_public_testnet_and_supporting_features_introduction_en_v1.0.pdf
Doris Guo Q12: Do you have any plan to burn or buyback your coin?
Haobo Ma We have plans for the community to govern through DAO, we have no interest in short-term price incentive adjustment as we would prefer to drive the project to higher adoption. After mainnet starts operation, there will be a part of network revenue get destroyed automatically.
Doris Guo Q13: Often, as a newbie developer, I face difficulties on most blockchains. How easy and convenient is it for me on Aelf, and what programming language and tools are needed??
Haobo Ma We set up staging for DAPP developers on GitHub and configured CI. Develop a smart contract using C# with React Native on the front end. So, in fact, developers can fork the source code without setting up the environment locally, and you can conduct unit testing with the help of CI. You can also release the smart contract and generate the installation package of iOS and android online. https://github.com/AElfProject/Aelf-boilerplate
Doris Guo Q14: What is the progress of business development and what are some of your commercial partnerships? How will Aelf rapidly develop the number & performance of DAPP?
Haobo Ma First of all, the blockchain industry is still fairly small and users with ETH and EOS wallets are considered a very small group and its not effective to even promote within these groups. What we need to consider is how to enable users who have never been exposed to blockchain to use DAPP. The competitiveness of Aelf is to make it easier for Aelf developers to promote their DAPP to ordinary users, rather than to teach ordinary users a lot on blockchain knowledge. The average user doesn't like to hear about private keys, mnemonic, Gas Price, RAM, CPU, etc. Only until we solve such problems, companies that need to solve problems through blockchain will be more inclined to use Aelf in technology selection. Therefore, our main work is to explain the competitive advantages of Aelf, ETH and EOS to everyone. We have some business cooperation’s, but we also believe that simply through case-by-case business cooperation will not be able to gain adoption so quickly, therefore we still need to put our products to stay ahead of the next generation.
Doris Guo Q15: What other activities can encourage more people to be confident about Aelf?
Haobo Ma We are only going to state the truth by having those that have faith in us to stay and those that don't to leave. The development of Aelf is not driven by a single foundation, but by a steady stream of contributions from the community. In the future, we will also place the activities in the DAO for on-chain governance, and let the community make decisions by itself.

https://preview.redd.it/e66vhqvl5er41.png?width=555&format=png&auto=webp&s=412a2dd831ba3817806e48855f158482bf671770
Kun Aguero As you know that in the present market situation many new coins or either dying or thriving for liquidity? How will you manage this liquidity problem?
Zhuling Chen Aelf started in 2017. we have gone through a few cycles in the market, still, remember the big down period in 2018-2019. Aelf is financially solid and the team has always been working hard. if you are referring to liquidity in exchanges, we are among the lucky ones that are listed in all major exchanges
Xinshu Dong Hello, great discussions! I would like to ask what are the criteria to join the committee for launching the mainnet? Would love to participate
Zhuling Chen Hi xinshu, great to see you here. The committee will be chosen among the nodes elected during the testnet dry run. Which means, it is really important to participate in the testnet dry run and also start to establish your reputation in the community so that people will elect you as a node. The detailed criteria will include what is your plan to help Aelf to grow, tech competency and reputation.
An Da What are Aelf’s achievements in 2019? Who had supported you to get those things?
Zhuling Chen To name a few, in 2019, Aelf is one of the most active projects on GitHub. This means Aelf is evolving and improving fast in this space and our team has the tech strength. In addition, we have also successfully listed on all major cloud service providers, such as AWS, Azure, Google. So large companies can easily launch Aelf side chains in their organization with minimum hassle.
John How does the voting for master nodes candidates occur? And why is the development of this system important for your project?
Zhuling Chen Voting is going to be pretty simple. All token holders can vote for the nodes they support on our block explorer.
Miha After mainnet lunch, how will you assure that transactional fees will stay low? We know what sometimes happens to fees on ETH blockchain.
Zhuling Chen First of all, due to the fact that is Aelf is scalability, this will reduce transaction fee. Secondly, all transaction fees will be voted by the nodes (which will be elected by you). So they will represent your interest
Bobbyfernandito Currently, as we see All projects are concerned with the speed and security. So, tell us here - what are the facilities Aelf provide to their user and investors?
Haobo Ma Security: we have an automated smart contract code audit. During contract deployment, production nodes and the community audit participation are required. On the other hand, we are also planning to provide a standardized model of centralized exchange access for 100% asset certification and emergency measures to deal with exchange attacks, which we will be released later. Speed: Aelf has been working on improving performance, which is transparent to users which they can also experience by themselves.
An Da What effect does Aelf token have on the Aelf ecosystem? Holding Aelf, what benefits will users receive?
Zhuling Chen Holding ELF enables you to use all the services on the Aelf network. ELF has a deflating system where the total amount will reduce as the network grows. token holders can also vote for the nodes to run the network and also vote for big decisions in the network. part of the fees in the system will also be distributed to token holders via a smart contract
ahihi132 Which companies do you view them as potential partners and that they are somewhat also beneficial for both the user base and Aelf itself?
Zhuling Chen Great question, if I could write a wish list, that will be: let medium-sized financial institutions to use Aelf to challenge the big boys. Let telecommunication companies use Aelf for micro-payment and other innovative business models. We also would like to try out a few public sector projects, which blockchain will is still more transparency and trust
Misun Q1: Which programming languages are you using in your project? And why? Q2-What are another big MILESTONES you have planned for 2020 roadmap and how are they supposed to benefit your costumers? Will it be an exciting year?
Haobo Ma For Q1: We mainly use C# for development, I personally like it. Performance is good, development environment IDEs are strong, and C# creators are influential in the industry. We believe in the right thing, though it may take a while to develop. The smart contract will then add support for multiple languages, such as WebAssembly, depending on the needs of the community. Now it seems that C# is enough.
Hambi crypto Which platforms are your competitors? How will you soar above them, and what better things do you offer than them? So, What’s your outlook on the future of cryptocurrencies in this year and next few years?
Haobo Ma As I have already mentioned this before, Eth and Eos. We provide better performance, cross-chain support (already implemented), end-users do not need to know the details of the blockchain, developer’s payment models and so on.
Floris-Jan What plans is Aelf making to prevent centralized exchange to take over the DPoS algorithm like what happened to Steem? Are we talking about blacklisting exchange wallets, or having the foundation say "No", or putting all trust in the community?
Zhuling Chen Great question, Floris. I’m not going to give away all the details of what Haobo has proposed to work on this, but in a nutshell, in Aelf system, exchange wallets will not be allowed to vote, but only the sub-wallets for each individual can vote. This will also help exchanges to prevent hacking and theft in the future
Alex What your plans in place for global expansion, are Aelf wallet focusing on the only market at this time? Or focus on building and developing or getting customers and users, or partnerships? Can you explain this?
Haobo Ma Our core focus will be through the developers to promote, developers will help Aelf to attract more users. So our product has to be attractive to developers. Just like AWS, they only focus on getting their service right, their developers will think about how to promote it. We don't want to burden them in their promotion process.
Ellkay What do you think are the major threats and barriers that could face the development and adoption of Aelf?
Haobo Ma If I'm a DAPP developer and I need to promote my APP to people who don't recognize blockchain, then I'd like to choose a platform that doesn't have to explain a lot of blockchain details to the end-user, so they can use it easily. We've provided some options in the Boilerplate that allow you to log-in simply via QR code + Password, and our recommended Dapp is an independent wallet and a separate iOS/Android application.
ahihi132 Give me some important reasons why we need to hold Aelf token where in fact hundreds of projects failed and it went to bankruptcy or even developers run when they collect millions/billions of funds?
Haobo Ma First of all, we will not give any suggestions as we only describe the fact that the long-term token holder will be able to govern the Aelf network, get Aelf mining reward and Aelf network profit. At the same time, Aelf network is a deflation model, Aelf network received transaction fees, profit dividends will immediately destroy 10% etc. All investments are risky, and we don't judge the behaviour of other developers. There are so many things in this world that cannot be understood and unfair. It is important to do our job well. I cannot explain these things.
见愁 I remember that boss Ma mentioned to only find those truly innovative applications and enterprises with blockchain, how to find and win partners in these aspects?
Haobo Ma When Linus was developing Linux, I did not think he would find a lot of collaboration when the code was not good. The response we can give is that we already have a lot of interest in cooperation, including what we have announced, what we have not announced, etc.
见愁 How interested are cloud computing providers in participating nodes?
Haobo Ma The vast majority of our nodes should be using cloud services, and as long as a large number of our 17 nodes and other candidate nodes are based on cloud services, our network robustness is determined by these cloud computing providers. Of course, in the expansion, we can also use cloud computing services.
submitted by Floris-Jan to aelfofficial [link] [comments]

Lately, there’s been a lot of debate around what Ethereum is or what it represents. Here’s my shot at it: Ethereum is a Global Trust Provider (or Global Trust Network).

Ethereum can mean different things to different people. Some say it’s money, some say it’s a world computer. These seem to be properties or applications, other than its true nature.
To understand what Ethereum is, we need to go back to what it’s really, really, really doing: settling smart contract transactions. What’s the service it’s really providing: a decentralized trust (with certain economic value at stake) that’s being endorsed on each piece of transaction and on-chain data. The product we are really is this decentralized trust. People pay for this product in terms of gas.
How do we measure this trust product? 1) its total economic value at stake. In the case of POW, it’s the total replacement value of total hashrate mining the chain. In the case of POS, it’s the token value being staked. 2) not just the total value at stake, but also the distribution of that value. For example, I would trust 100 people with $100 across the globe not cheating at the same time, more than trusting some individual with $10,000 not cheating. 3) it’s not just the value at stake, but the actual value at risk. For example, in the case of POW, it’s only the electricity that’s being lost for the cheaters, while in POS, potentially the whole stake is at risk. Also in a cloud computing setup, for example, AWS has the total value of amazon the company ($1T) at stake, but nothing was getting slashed when AWS was down for a few hours a couple weeks ago.
Is there demand for such trust: Yes, and it’s growing. Just look at Tether moving more and more USDT to Ethereum, and DiFi applications, running decentralized organizations, and look at real estate assets being tokenized and traded on chain. The most appropriate applications at this stage would be high value transactions or data processing that required high value and high quality of trust. And these kind of transactions actually don’t require 1 second confirmation, so speed is not really the important factor here (I used to think scalability is the most urgent thing for Ethereum, but under this framework, it’s becoming clear to me that POS and privacy is way more important to upgrade our core product – trust).
This framework can also help settle some of the other debates currently in this space: 1) store of value debate; 2) Ethereum killer debate:
1) Store of value: this is mainly a debate between Bitcoin and Ethereum. Let’s say total Bitcoin mining equipment is worth $2B (I could be off, but I think the order of magnitude is about right). Bitcoin miners burn about $4B of electricity per year, but to attack the network for a day, it’s only $10M electricity per day at risk. Right now, as in POW, Bitcoin is more secure than Ethereum. But when we move to POS, with 10% of token at stake, that’s explicitly $2B of value at stake and $2B of value at risk (implicitly transactions are backed by full faith and credit of the whole Ethereum community ($20B) since we can fork when attacks happen). Also look at the quality of this trust – POW mining has great amount of concentration, while distribution of staking is greatly mimicking the token distribution (not to mention, Ethereum researchers have gone through great pain to make sure the staking nodes are anti-correlated). Some people claim Bitcoin’s 21M hard cap makes it a store of value. I think they are completely missing the point. It doesn’t matter whether the hard cap is 15M, or 21M, or 30M, if someone can just take all your asset away. When Ethereum moves to POS, from the trust value at stake, trust value at risk, quality of the trust and lastly the issuance rate points of view, Ethereum will be a way better place to store value.
2) Ethereum killers: Most of the so called Ethereum killers focus on speed and scalability. They now seem to have all missed the point under this framework. The issue is that they can’t create high value and high quality trust based on their market caps and token distributions. And low value/quality trust just simply doesn’t need blockchain for it to be delivered. Your banks or most public traded companies can deliver high value/low quality trust.
3) What can really derail Ethereum from becoming the premier global trust provider network? A couple possible but not plausible scenarios: A) internationally coordinately distribute $20B of token X to 1M individuals across globe, and have them run a POS chain. B) fork Bitcoin blockchain (token distribution will be as good as BTC) and have the new chain run POS (this hypothetical fork chain is unlikely to have high value because it breaks Bitcoin’s enshrined monetary policy).
4) How do we value such network? I think market cap to annual transaction fee ratio will be the most important one. Token holders initially subsidized miners/validators to bring the blockchain to the point where transaction fee revenue is greater than security budget. The overage is burnt, effectively distributing back to token holders. Currently, Eth1.0 can easily generate $100M per year. When we move to Eth2.0, with better product (higher value/higher quality trust) and the capacity to deliver 1B of the such products (on-chain transactions), we can reasonably expect the chain to generate billions of dollars of transaction fee revenue (oh, and state rent revenue). You do the math how much ether will be worth at that point (although an even higher monetary premium will be derived from ether being the best store of value at that point).
5) Ethereum will enjoy this positive reinforcing feedback loop: higher trust generates higher revenue, in turn attracts more economic value to participate, in turn creates higher trust.
A couple more thoughts:
1) What’s ether? Ether (32 eth) is the ticket to participate this global trust network as a provider. You can also use it to redeem the trust you needed for your on-chain activities. It can also be money or store of value, which are derived properties of ether having utility (the ticket) and the backing of high value high quality trust. Without both, it’s just simply delusional to think a certain cryptocurrency has any value.
2) What’s the role of POW under this light? A long running of POW ensures token distributions are sufficiently decentralized. But by itself, it can’t generate high value and high quality of trust. POW can only be an embryonic stage of a blockchain, but it’s not suitable for delivering the final Core product.
submitted by mrnobodyman to ethfinance [link] [comments]

Bitcoin mining 2017 with AWS and Freebitcoin Blockchain Nodes - How to Make a Node on Raspberry Pi! React + Node.js on AWS - How to Deploy a MERN Stack App to ... How to mine bitcoin with amazon aws - YouTube Deploy Toshi Bitcoin Node with Docker on AWS in 30 minutes. Beginner Friendly!

Amazon.com: bitcoin miner. Skip to main content .us. All. Hello, Sign in. Account & Lists Account Returns & Orders. Try Prime. Cart Hello Select your address Holiday Deals Gift Cards Best Sellers Customer Service New Releases AmazonBasics Whole Foods Free Shipping Registry Sell Coupons #FoundItOnAmazon Shopper Toolkit Find a Gift Disability Customer Support. Shop today's epic deals now. 1-16 ... Running a full node on Amazon AWS? Would this be a reasonable thing to do, without stepping (too far) over something like $20/month? I am just curious to tinker around with setting up a full node and "participate" in the network, only to see how this all works on a practical level, but cannot do so from my place for various reasons. So while the hardware required to run a full node is widely available, most people struggle with 100% uptime required for the full node. Therefore, many people choose to run their full nodes on cloud services like Google Cloud or Amazon Web Services. In effect, both the individual and cloud-based nodes are identical. Bitcoin Node on Google Cloud This VM provides you full bitcoin node . It has out of box setup for bitcoin which includes bitcoind & bitcoin QT GUI & synced ledger (till 4th Oct, 2020) making it easier & faster for you to fully sync the ledger. Why you need a fullnode: 1. Gives you higher degree of privacy & keeps you safe Running any kind of Bitcoin wallet that does not require you to run a full node means that you have ... AWS Marketplace is hiring! Amazon Web Services (AWS) is a dynamic, growing business unit within Amazon.com. We are currently hiring Software Development Engineers, Product Managers, Account Managers, Solutions Architects, Support Engineers, System Engineers, Designers and more. Visit our Careers page or our Developer-specific Careers page to ...

[index] [24363] [40460] [14469] [44251] [24786] [20091] [47389] [39969] [50984] [13654]

Bitcoin mining 2017 with AWS and Freebitcoin

In this tutorial we're going to setup a production ready web server from scratch on the Amazon EC2 (Elastic Compute Cloud) service, then deploy a custom MERN... What are nodes? Why should you run a node, and how do you go about it? I'll explain. Node supplies: https://www.amazon.com/CanaKit-Raspberry-Premium-Clear-Su... Get our free Bitcoin course here - https://chrisdunn.com/free-bitcoin-course This Bitcoin basics video series will explain Bitcoin for beginners. You'll lear... AWS Dev Day Australia 2018 - Developing Smart Contracts with the Ethereum Blockchain on AWS - Duration: 25:28. Amazon Web Services 1,601 views Coinbase : https://www.coinbase.com/ FaucetHub : https://faucethub.io/login Swift Mining : https://swiftmining.win/ Amazon AWS : https://console.aws.amazon.c...

#